#include "RadiantTest.h"

#include "igame.h"
#include "ideclmanager.h"
#include "testutil/TemporaryFile.h"
#include "testutil/ThreadUtils.h"
#include "decl/EditableDeclaration.h"
#include "algorithm/FileUtils.h"
#include "os/path.h"
#include "parser/DefBlockSyntaxParser.h"
#include "string/case_conv.h"

namespace test
{

class DeclManagerTest :
    public RadiantTest
{
public:
    const char* const TEST_DECL_FILE = "numbers.decl";
    const char* const TEST_DECL_FOLDER = "testdecls/";

    void preStartup() override
    {
        // Remove the physical override_test.decl file
        fs::remove(_context.getTestProjectPath() + "testdecls/override_test.decl");

        // Create a backup of the numbers file
        fs::path testFile = _context.getTestProjectPath() + TEST_DECL_FOLDER + TEST_DECL_FILE;
        fs::path bakFile = testFile;
        bakFile.replace_extension(".bak");
        fs::remove(bakFile);
        fs::copy(testFile, bakFile);
    }

    void preShutdown() override
    {
        fs::path testFile = _context.getTestProjectPath() + TEST_DECL_FOLDER + TEST_DECL_FILE;
        fs::remove(testFile);
        fs::path bakFile = testFile;
        bakFile.replace_extension(".bak");
        fs::rename(bakFile, testFile);
    }
};

class ITestDeclaration :
    public decl::IDeclaration
{
public:
    using Ptr = std::shared_ptr<ITestDeclaration>;

    virtual ~ITestDeclaration() {}

    // Interface methods for testing purposes

    virtual std::string getKeyValue(const std::string& key) = 0;
    virtual void setKeyValue(const std::string& key, const std::string& value) = 0;
    virtual void foreachKeyValue(std::function<void(std::pair<std::string, std::string>)> functor) = 0;
};

class TestDeclaration :
    public decl::EditableDeclaration<ITestDeclaration>
{
private:
    std::map<std::string, std::string> _keyValues;

public:
    TestDeclaration(decl::Type type, const std::string& name) :
        EditableDeclaration<ITestDeclaration>(type, name)
    {}

    std::string getKeyValue(const std::string& key) override
    {
        ensureParsed();
        return _keyValues.count(key) > 0 ? _keyValues.at(key) : "";
    }

    // API method to simulate a change of the declaration contents
    void setKeyValue(const std::string& key, const std::string& value) override
    {
        _keyValues[key] = value;
        onParsedContentsChanged();
    }

    void foreachKeyValue(std::function<void(std::pair<std::string, std::string>)> functor) override
    {
        for (auto& pair : _keyValues)
        {
            functor(pair);
        }
    }

    int generateSyntaxInvocationCount = 0;

protected:
    std::string generateSyntax() override
    {
        ++generateSyntaxInvocationCount;

        std::stringstream stream;

        stream << "\n";

        for (const auto& [key, value] : _keyValues)
        {
            stream << "\"" << key << "\" \"" << value << "\"\n";
        }

        stream << "\n";

        return stream.str();
    }

    void parseFromTokens(parser::DefTokeniser& tokeniser) override
    {
        _keyValues.clear();

        while (tokeniser.hasMoreTokens())
        {
            // Read key/value pairs until end of decl
            auto key = tokeniser.nextToken();
            auto value = tokeniser.nextToken();

            _keyValues.emplace(key, value);
        }
    }
};

class TestDeclarationCreator :
    public decl::IDeclarationCreator
{
public:
    std::function<void()> creationCallback;

    decl::Type getDeclType() const override
    {
        return decl::Type::TestDecl;
    }

    decl::IDeclaration::Ptr createDeclaration(const std::string& name) override
    {
        if (creationCallback)
        {
            creationCallback();
        }

        return std::make_shared<TestDeclaration>(getDeclType(), name);
    }
};

class TestDeclaration2Creator :
    public decl::IDeclarationCreator
{
public:
    decl::Type getDeclType() const override
    {
        return decl::Type::TestDecl2;
    }

    decl::IDeclaration::Ptr createDeclaration(const std::string& name) override
    {
        return std::make_shared<TestDeclaration>(getDeclType(), name);
    }
};

TEST_F(DeclManagerTest, DeclTypeRegistration)
{
    auto creator = std::make_shared<TestDeclarationCreator>();
    EXPECT_NO_THROW(GlobalDeclarationManager().registerDeclType("testdecl", creator));

    // Registering the same type name twice should result in an exception
    EXPECT_THROW(GlobalDeclarationManager().registerDeclType("testdecl", creator), std::logic_error);

    // Passing a new creator instance doesn't help either
    auto creator2 = std::make_shared<TestDeclarationCreator>();
    EXPECT_THROW(GlobalDeclarationManager().registerDeclType("testdecl", creator2), std::logic_error);
}

TEST_F(DeclManagerTest, DeclTypeUnregistration)
{
    auto creator = std::make_shared<TestDeclarationCreator>();
    GlobalDeclarationManager().registerDeclType("testdecl", creator);

    // Unregistering the creator should succeed
    EXPECT_NO_THROW(GlobalDeclarationManager().unregisterDeclType("testdecl"));

    // Trying to unregister it twice should result in an exception
    EXPECT_THROW(GlobalDeclarationManager().unregisterDeclType("testdecl"), std::logic_error);
}

inline std::set<std::string> getAllDeclNames(decl::Type type)
{
    // Iterate over all decls and collect the names
    std::set<std::string> foundNames;

    GlobalDeclarationManager().foreachDeclaration(type, [&](const decl::IDeclaration::Ptr& declaration)
    {
        foundNames.insert(declaration->getDeclName());
    });

    return foundNames;
}

inline void checkKnownTestDeclNames()
{
    auto foundNames = getAllDeclNames(decl::Type::TestDecl);

    // Check a few known ones
    EXPECT_TRUE(foundNames.count("decl/exporttest/guisurf1") > 0);
    EXPECT_TRUE(foundNames.count("decl/numbers/0") > 0);
    EXPECT_TRUE(foundNames.count("decl/numbers/1") > 0);
    EXPECT_TRUE(foundNames.count("decl/numbers/2") > 0);

    // decltables should not be listed
    EXPECT_FALSE(foundNames.count("decltable1") > 0);
    EXPECT_FALSE(foundNames.count("decltable2") > 0);
    EXPECT_FALSE(foundNames.count("decltable3") > 0);
}

inline void checkKnownTestDecl2Names()
{
    auto foundNames = getAllDeclNames(decl::Type::TestDecl2);

    // Assume testdecls are not listed
    EXPECT_FALSE(foundNames.count("decl/exporttest/guisurf1") > 0);
    EXPECT_FALSE(foundNames.count("decl/numbers/0") > 0);
    EXPECT_FALSE(foundNames.count("decl/numbers/1") > 0);
    EXPECT_FALSE(foundNames.count("decl/numbers/2") > 0);

    // testdecl2 should be listed
    EXPECT_TRUE(foundNames.count("decltable1") > 0);
    EXPECT_TRUE(foundNames.count("decltable2") > 0);
    EXPECT_TRUE(foundNames.count("decltable3") > 0);
}

TEST_F(DeclManagerTest, DeclFolderRegistration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());

    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, "decl");

    checkKnownTestDeclNames();
}

TEST_F(DeclManagerTest, DeclFolderRegistrationWithoutSlash)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());

    // Omit the trailing slash, should work just fine
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, "testdecls", ".decl");

    checkKnownTestDeclNames();
}

TEST_F(DeclManagerTest, DeclFolderRegistrationWithoutExtensionDot)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());

    // Add no dot to the file extension, should work just fine
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, "decl");

    checkKnownTestDeclNames();
}

// Test a second decl creator
TEST_F(DeclManagerTest, DeclTypeCreatorRegistration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclType("testdecl2", std::make_shared<TestDeclaration2Creator>());

    // Parse this folder, it contains decls of type testdecl and testdecl2 in the .decl files
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    checkKnownTestDeclNames();
    checkKnownTestDecl2Names();
}

// Test that a creator coming late to the party is immediately fed with the buffered decl blocks
TEST_F(DeclManagerTest, LateCreatorRegistration)
{
    auto creator = std::make_shared<TestDeclarationCreator>();

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());

    // Parse this folder, it contains decls of type testdecl and testdecl2 in the .decl files
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Let the testdecl creator finish its work
    getAllDeclNames(decl::Type::TestDecl);

    auto foundTestDecl2Names = getAllDeclNames(decl::Type::TestDecl2);
    EXPECT_FALSE(foundTestDecl2Names.count("decltable1") > 0);
    EXPECT_FALSE(foundTestDecl2Names.count("decltable2") > 0);
    EXPECT_FALSE(foundTestDecl2Names.count("decltable3") > 0);

    // Register the testdecl2 creator now, it should be used by the decl manager to parse the missing pieces
    GlobalDeclarationManager().registerDeclType("testdecl2", std::make_shared<TestDeclaration2Creator>());

    // Everything should be registered now
    checkKnownTestDecl2Names();
}

TEST_F(DeclManagerTest, CreatorRegistrationDuringRunningThread)
{
    auto creator = std::make_shared<TestDeclarationCreator>();

    bool testDecl2Registered = false;

    // When the first testdecl is created, we register the decl2 type
    creator->creationCallback = [&]()
    {
        if (!testDecl2Registered)
        {
            // Register the testdecl2 creator now, it should be used by the decl manager
            // (after the running thread is done) to parse the missing pieces
            GlobalDeclarationManager().registerDeclType("testdecl2", std::make_shared<TestDeclaration2Creator>());
            testDecl2Registered = true;
        }
    };

    GlobalDeclarationManager().registerDeclType("testdecl", creator);

    // We assume we know nothing about the decl2 typed table yet
    auto foundTestDecl2Names = getAllDeclNames(decl::Type::TestDecl2);
    EXPECT_FALSE(foundTestDecl2Names.count("decltable1") > 0);

    // Parse this folder, it contains decls of type testdecl and testdecl2 in the .decl files
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    getAllDeclNames(decl::Type::TestDecl);

    EXPECT_TRUE(testDecl2Registered) << "Callback to register testdecl2 has never been invoked";

    // Everything should be registered now
    checkKnownTestDecl2Names();
}

TEST_F(DeclManagerTest, DeclsReloadedSignalAfterInitialParse)
{
    auto creator = std::make_shared<TestDeclarationCreator>();
    GlobalDeclarationManager().registerDeclType("testdecl", creator);

    bool testdeclSignalFired = false;
    bool testdecl2SignalFired = false;
    GlobalDeclarationManager().signal_DeclsReloaded(decl::Type::TestDecl).connect(
        [&]() { testdeclSignalFired = true; }
    );
    GlobalDeclarationManager().signal_DeclsReloaded(decl::Type::TestDecl2).connect(
        [&]() { testdecl2SignalFired = true; }
    );

    // Parse this folder, it contains decls of type testdecl and testdecl2 in the .decl files
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Force the threads to be finished
    GlobalDeclarationManager().foreachDeclaration(decl::Type::TestDecl, [](const decl::IDeclaration::Ptr&) {});

    EXPECT_TRUE(algorithm::waitUntil([&]() { return testdeclSignalFired; })) << "Time out waiting for the flag";

    EXPECT_TRUE(testdeclSignalFired) << "testdecl signal should have fired by the time parsing has finished";
    EXPECT_FALSE(testdecl2SignalFired) << "testdecl2-type Signal should not have been fired";
}

TEST_F(DeclManagerTest, DeclsReloadedSignals)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclType("testdecl2", std::make_shared<TestDeclaration2Creator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Force the threads to be finished
    GlobalDeclarationManager().foreachDeclaration(decl::Type::TestDecl, [](const decl::IDeclaration::Ptr&) {});
    GlobalDeclarationManager().foreachDeclaration(decl::Type::TestDecl2, [](const decl::IDeclaration::Ptr&) {});

    bool testdeclsReloadingFired = false;
    bool testdecl2sReloadingFired = false;
    GlobalDeclarationManager().signal_DeclsReloading(decl::Type::TestDecl).connect(
        [&]() { testdeclsReloadingFired = true; }
    );
    GlobalDeclarationManager().signal_DeclsReloading(decl::Type::TestDecl2).connect(
        [&]() { testdecl2sReloadingFired = true; }
    );

    auto callingThreadId = std::this_thread::get_id();
    std::thread::id signalThreadId;

    std::size_t testdeclsReloadedFireCount = 0;
    bool testdecl2sReloadedFired = false;
    GlobalDeclarationManager().signal_DeclsReloaded(decl::Type::TestDecl).connect(
        [&]()
        {
            ++testdeclsReloadedFireCount;
            signalThreadId = std::this_thread::get_id();
        }
    );
    GlobalDeclarationManager().signal_DeclsReloaded(decl::Type::TestDecl2).connect(
        [&]() { testdecl2sReloadedFired = true; }
    );

    GlobalDeclarationManager().reloadDeclarations();

    EXPECT_TRUE(testdeclsReloadingFired) << "testdecl signal should have fired before reloadDecls";
    EXPECT_TRUE(testdecl2sReloadingFired) << "testdecl2 signal should have fired before reloadDecls";
    EXPECT_EQ(testdeclsReloadedFireCount, 1) << "testdecl signal should have fired once after reloadDecls";
    EXPECT_TRUE(testdecl2sReloadedFired) << "testdecl2 signal should have fired after reloadDecls";

    // The signal has to be fire on the same thread as the calling code
    EXPECT_EQ(callingThreadId, signalThreadId) << "Reloaded Signal should have been fired on the calling thread.";
}

TEST_F(DeclManagerTest, FindDeclaration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    EXPECT_TRUE(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1"));
    EXPECT_FALSE(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/nonexistent"));

    // Find declaration is case-insensitive
    EXPECT_EQ(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1"),
              GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "Decl/eXporTTest/gUISURF1"));
}

TEST_F(DeclManagerTest, FindOrCreateDeclaration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    EXPECT_TRUE(GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1"));
    EXPECT_FALSE(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/nonexistent")) <<
        "decl/nonexistent should not be present in this test setup";

    auto defaultDecl = GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "decl/nonexistent");
    EXPECT_TRUE(defaultDecl) << "Declaration manager didn't create a defaulted declaration";

    EXPECT_EQ(defaultDecl->getDeclType(), decl::Type::TestDecl);
    EXPECT_EQ(defaultDecl->getDeclName(), "decl/nonexistent");
    EXPECT_EQ(defaultDecl->getBlockSyntax().contents, std::string());
    EXPECT_EQ(defaultDecl->getBlockSyntax().fileInfo.visibility, vfs::Visibility::HIDDEN);

    EXPECT_EQ(GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "decl/nonexistent"), defaultDecl)
        << "We expect the created declaration to be persistent";
    EXPECT_EQ(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/nonexistent"), defaultDecl)
        << "We expect the created declaration to be persistent";
}

TEST_F(DeclManagerTest, FindOrCreateUnknownDeclarationType)
{
    // Unknown types should yield an exception
    EXPECT_THROW(GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::None, "decl/nonexistent"), std::invalid_argument);
    EXPECT_THROW(GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::Undetermined, "decl/nonexistent"), std::invalid_argument);
}

TEST_F(DeclManagerTest, DeclarationMetadata)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1");

    EXPECT_TRUE(decl);
    EXPECT_EQ(decl->getDeclType(), decl::Type::TestDecl);
    EXPECT_EQ(decl->getDeclFilePath(), "testdecls/exporttest.decl");
    EXPECT_EQ(decl->getModName(), RadiantTest::DEFAULT_GAME_TYPE);
}

inline void expectDeclIsPresent(decl::Type type, const std::string& declName)
{
    EXPECT_TRUE(GlobalDeclarationManager().findDeclaration(type, declName))
        << declName << " should be present";
}

inline void expectDeclIsNotPresent(decl::Type type, const std::string& declName)
{
    EXPECT_FALSE(GlobalDeclarationManager().findDeclaration(type, declName))
        << declName << " should not be present";
}

inline void expectDeclContains(decl::Type type, const std::string& declName, const std::string& expectedContents)
{
    auto decl = GlobalDeclarationManager().findDeclaration(type, declName);
    EXPECT_TRUE(decl) << declName << " should be present";
    EXPECT_NE(decl->getBlockSyntax().contents.find(expectedContents), std::string::npos)
        << declName << " should contain the expected contents " << expectedContents;
}

// Decl must still be present, but not contain the given string
inline void expectDeclDoesNotContain(decl::Type type, const std::string& declName, const std::string& contents)
{
    auto decl = GlobalDeclarationManager().findDeclaration(type, declName);
    EXPECT_TRUE(decl) << declName << " should be present";
    EXPECT_EQ(decl->getBlockSyntax().contents.find(contents), std::string::npos)
        << declName << " should NOT contain " << contents;
}

// EntityDef is treated the same as EnTiTyDeF and entitydef
TEST_F(DeclManagerTest, DeclTypenamesAreCaseInsensitive)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/numbers/3");
    expectDeclContains(decl::Type::TestDecl, "decl/numbers/3", "diffusemap textures/numbers/3");
}

TEST_F(DeclManagerTest, ReloadDeclarationDetectsChangedFile)
{
    TemporaryFile tempFile(_context.getTestProjectPath() + "testdecls/temp_file.decl");
    tempFile.setContents(R"(

decl/temporary/11
{
    diffusemap textures/temporary/11
}

decl/temporary/12
{
    diffusemap textures/temporary/12
}

)");

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclContains(decl::Type::TestDecl, "decl/temporary/12", "diffusemap textures/temporary/12");
    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/temporary/13");

    // Change the file, change temp12, remove temp11 and add temp13 instead
    tempFile.setContents(R"(

decl/temporary/12
{
    diffusemap textures/changed_temporary/12
}

testdecl decl/temporary/13
{
    diffusemap textures/temporary/13
}

)");

    GlobalDeclarationManager().reloadDeclarations();

    // Check the changes in temp12
    expectDeclContains(decl::Type::TestDecl, "decl/temporary/12", "diffusemap textures/changed_temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/13");
    expectDeclDoesNotContain(decl::Type::TestDecl, "decl/temporary/11", "diffusemap textures/temporary/11");
}

TEST_F(DeclManagerTest, ReloadDeclarationDetectsNewFile)
{
    TemporaryFile tempFile(_context.getTestProjectPath() + "testdecls/temp_file.decl");

    tempFile.setContents(R"(
testdecl   decl/temporary/11 { diffusemap textures/temporary/11 }
testdecl    decl/temporary/12 { diffusemap textures/temporary/12 }
)");

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/temporary/13");

    // Create a new file and reload decls
    TemporaryFile tempFile2(_context.getTestProjectPath() + "testdecls/temp_file2.decl");
    tempFile2.setContents(R"(
testdecl   decl/temporary/13 { diffusemap textures/temporary/13 }
testdecl    decl/temporary/14 { diffusemap textures/temporary/14 }
)");

    GlobalDeclarationManager().reloadDeclarations();

    // All the decls should be present now
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/13");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/14");
}

TEST_F(DeclManagerTest, ReloadDeclarationDetectsRemovedFile)
{
    TemporaryFile tempFile(_context.getTestProjectPath() + "testdecls/temp_file.decl");
    tempFile.setContents(R"(
testdecl   decl/temporary/11 { diffusemap textures/temporary/11 }
testdecl    decl/temporary/12 { diffusemap textures/temporary/12 }
)");

    auto tempFile2 = std::make_shared<TemporaryFile>(_context.getTestProjectPath() + "testdecls/temp_file2.decl");
    tempFile2->setContents(R"(
testdecl   decl/temporary/13 { diffusemap textures/temporary/13 }
testdecl    decl/temporary/14 { diffusemap textures/temporary/14 }
)");

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/13");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/14");

    // Remove one file and reload decls
    tempFile2.reset();
    GlobalDeclarationManager().reloadDeclarations();

    // All decls should still be present
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/12");
    expectDeclDoesNotContain(decl::Type::TestDecl, "decl/temporary/13", "diffusemap textures/temporary/13");
    expectDeclDoesNotContain(decl::Type::TestDecl, "decl/temporary/14", "diffusemap textures/temporary/14");
}

// Have one declaration moved from one existing file to another
TEST_F(DeclManagerTest, ReloadDeclarationDetectsMovedDecl)
{
    TemporaryFile tempFile(_context.getTestProjectPath() + "testdecls/temp_file.decl");
    TemporaryFile tempFile2(_context.getTestProjectPath() + "testdecls/temp_file2.decl");

    tempFile.setContents(R"(
testdecl   decl/temporary/11 { diffusemap textures/temporary/11 }
testdecl    decl/temporary/12 { diffusemap textures/temporary/12 }
)");

    tempFile2.setContents(R"(
testdecl   decl/temporary/13 { diffusemap textures/temporary/13 }
)");

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/13");

    // Move a decl from the first file to the second
    tempFile.setContents(R"(
testdecl   decl/temporary/11 { diffusemap textures/temporary/11 }
)");
    tempFile2.setContents(R"(
testdecl   decl/temporary/13 { diffusemap textures/temporary/13 }
testdecl    decl/temporary/12 { diffusemap textures/changed_temporary/12 } // changed the decl
)");

    GlobalDeclarationManager().reloadDeclarations();

    // All decls should still be present, contents of 12 should have changed
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");
    expectDeclContains(decl::Type::TestDecl, "decl/temporary/12", "diffusemap textures/changed_temporary/12");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/13");
}

TEST_F(DeclManagerTest, ReloadDeclarationsIncreasesParseStamp)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1");
    EXPECT_TRUE(decl) << "Couldn't find the declaration decl/exporttest/guisurf1";

    auto firstParseStamp = decl->getParseStamp();

    GlobalDeclarationManager().reloadDeclarations();

    decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/exporttest/guisurf1");
    EXPECT_TRUE(decl) << "Couldn't find the declaration decl/exporttest/guisurf1";

    EXPECT_NE(decl->getParseStamp(), firstParseStamp) << "Parse stamp should have changed on reload";
}

// A declaration that is removed after reloadDecls should have its visibility set to hidden
TEST_F(DeclManagerTest, RemovedDeclarationIsHidden)
{
    TemporaryFile tempFile(_context.getTestProjectPath() + "testdecls/temp_file.decl");

    tempFile.setContents(R"(
testdecl   decl/temporary/11 { diffusemap textures/temporary/11 }
testdecl    decl/temporary/12 { diffusemap textures/temporary/12 }
)");

    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporary/11");

    // Remove decl/temporary/11
    tempFile.setContents(R"(
testdecl   decl/temporary/13 { diffusemap textures/temporary/13 }
testdecl    decl/temporary/12 { diffusemap textures/temporary/12 }
)");

    GlobalDeclarationManager().reloadDeclarations();

    // the decl decl/temporary/11 should be there, but hidden
    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/temporary/11");

    EXPECT_TRUE(decl) << "Declaration should still be registered after reloadDecls";
    EXPECT_TRUE(decl->getBlockSyntax().contents.empty()) << "Declaration should be empty after reloadDecls";
    EXPECT_EQ(decl->getBlockSyntax().fileInfo.visibility, vfs::Visibility::HIDDEN) << "Declaration should be hidden after reloadDecls";
}

TEST_F(DeclManagerTest, DeclarationPrecedence)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/precedence_test/1");

    // The first decl in the file precedence_test1.decl takes precedence over any decls
    // declared in the same file or other files sorted after precedence_test1.decl
    expectDeclContains(decl::Type::TestDecl, "decl/precedence_test/1", "diffusemap textures/numbers/1");
}

TEST_F(DeclManagerTest, RemoveDeclaration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/1");

    // Keep a local reference to the decl around to see what happens with its contents after removal
    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/removal/1");

    // Create a backup copy of the decl file we're going to manipulate
    BackupCopy backup(_context.getTestProjectPath() + decl->getDeclFilePath());

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/1");

    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/removal/1");

    // The held reference should be cleared
    EXPECT_TRUE(decl->getBlockSyntax().name.empty());
    EXPECT_TRUE(decl->getBlockSyntax().typeName.empty());
    EXPECT_TRUE(decl->getBlockSyntax().contents.empty());
    EXPECT_TRUE(decl->getBlockSyntax().fileInfo.name.empty());
    EXPECT_TRUE(decl->getBlockSyntax().fileInfo.topDir.empty());
    EXPECT_TRUE(decl->getBlockSyntax().fileInfo.fullPath().empty());
    EXPECT_EQ(decl->getBlockSyntax().fileInfo.visibility, vfs::Visibility::HIDDEN);
}

// Removing a decl defined in a PK4 file will throw
TEST_F(DeclManagerTest, RemoveDeclarationInPk4File)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/export/0");
    EXPECT_TRUE(decl) << "decl/export/0 must be present";
    EXPECT_FALSE(decl->getBlockSyntax().fileInfo.getIsPhysicalFile()) << "decl/export/0 should be in a PK4 file";

    // Attempting to remove the decl will throw
    EXPECT_THROW(GlobalDeclarationManager().removeDeclaration(decl->getDeclType(), decl->getDeclName()),
        std::logic_error) << "Removing a PK4 decl should throw";
}

// Removing a decl defined in a physical file will succeed
TEST_F(DeclManagerTest, RemoveDeclarationFromPhysicalFile)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/removal/1");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/1");

    auto originalSyntax = decl->getBlockSyntax();
    EXPECT_TRUE(originalSyntax.fileInfo.getIsPhysicalFile()) << "decl/removal/1 must be in a physical file";

    auto fileContents = algorithm::loadTextFromVfsFile(decl->getDeclFilePath());
    EXPECT_NE(fileContents.find(originalSyntax.contents), std::string::npos) << "Decl source not found";

    // Create a backup copy of the decl file we're going to manipulate
    BackupCopy backup(_context.getTestProjectPath() + decl->getDeclFilePath());

    // Remove the decl, it should remove the source from the file
    GlobalDeclarationManager().removeDeclaration(decl->getDeclType(), decl->getDeclName());

    auto contentsAfterRemoval = algorithm::loadTextFromVfsFile(decl->getDeclFilePath());
    EXPECT_NE(contentsAfterRemoval, fileContents) << "File contents should have been changed";
    EXPECT_EQ(contentsAfterRemoval.find(originalSyntax.contents), std::string::npos) << "Decl source should be gone";
}

// Removing a decl will keep leading comment lines that are separated with an empty line
TEST_F(DeclManagerTest, RemoveDeclarationPreservesSeparatedLeadingComments)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comments at the beginning of the file with an empty line in between"));

    // Remove decl/removal/0. This should remove the decl, but the comment at the beginning of the file should remain intact
    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/0");

    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comments at the beginning of the file with an empty line in between"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(decl/removal/0
{
    diffusemap textures/removal/0
})"));

    // Similar situation with decls/removal/5
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment with a line before the start of the decl decl/removal/5"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(testdecl decl/removal/5 { // a comment in the same line as the opening brace
    diffusemap textures/removal/5
})"));
    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/5");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(testdecl decl/removal/5 { // a comment in the same line as the opening brace
    diffusemap textures/removal/5
})"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment with a line before the start of the decl decl/removal/5"));
}

// Removing a decl will keep trailing comment lines and remove leading C-style comments
TEST_F(DeclManagerTest, RemoveDeclarationRemovesLeadingCStyleComment)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // decl/removal/1 has leading C-style comment, and a trailing single line comment
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "/* Without \"testdecl\" typename, C-style comment */"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Some comments after decl/removal/1"));

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/1");

    // Leading comment should be gone, trailing comment should stay
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(decl/removal/1
{
    diffusemap textures/removal/1
})"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "/* Without \"testdecl\" typename, C-style comment */"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Some comments after decl/removal/1"));
}

// Removing a decl will keep trailing comment lines and remove leading single-line comments
TEST_F(DeclManagerTest, RemoveDeclarationRemovesLeadingSingleLineComment)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // decl/removal/3 has leading single-line comment
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(// Comment before decl/removal/3)"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(TestDecl decl/removal/3
{
    diffusemap textures/removal/3
})"));

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/3");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(// Comment before decl/removal/3)"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(TestDecl decl/removal/3
{
    diffusemap textures/removal/3
})"));
    // This one is a trailing comment, and separated with an empty line too
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment with a line before the start of the decl decl/removal/5"));

    // decl/removal/6 has leading single-line comment, decl 7 is right afterwards
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(// Everything in the same line (before decl/removal/6))"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/6 { diffusemap textures/removal/6 }"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/7 { diffusemap textures/removal/7 }"));

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/6");

    // Leading comment should be gone, trailing decl should remain intact
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(// Everything in the same line (before decl/removal/6))"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/6 { diffusemap textures/removal/6 }"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/7 { diffusemap textures/removal/7 }"));
}

// Removing a decl will keep trailing comment lines and remove leading multi-line comments
TEST_F(DeclManagerTest, RemoveDeclarationRemovesLeadingMultilineComment)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // decl/removal/2 has leading multiline comment, and a trailing single line comment
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(/**
 A multiline comment before this decl
 */)"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Some comments after decl/removal/2"));

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/2");

    // Leading comment should be gone, trailing comment should stay
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(testdecl decl/removal/2
{
    diffusemap textures/removal/2
})"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(/**
 A multiline comment before this decl
 */)"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Some comments after decl/removal/2"));
}

// Multiple comments preceding the decl with minor whitespace in between
TEST_F(DeclManagerTest, RemoveDeclarationRemovesLeadingMixedComment)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // decl/removal/3a has leading multiline comment, and a trailing single line comment
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(// Multiple comment lines before decl/removal/a3
/* mixed style comments too */
	 // multiple comment with some whitespace at the start of each line
 // multiple comment with some whitespace at the start of each line)"));

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/3a");

    // Leading comment should be gone, trailing comment should stay
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(decl/removal/3a
{
    diffusemap textures/removal/a3
})"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, R"(// Multiple comment lines before decl/removal/a3
/* mixed style comments too */
	 // multiple comment with some whitespace at the start of each line
 // multiple comment with some whitespace at the start of each line)"));

    // Safety check that nothing else got removed (including whitespace)
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(

// Comment with a line before the start of the decl decl/removal/5)"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(TestDecl decl/removal/3
{
    diffusemap textures/removal/3
}

)"));
}

// There's an evil misleading commented out declaration decl/removal/9 in the file
// right before the actual, uncommented one
TEST_F(DeclManagerTest, RemoveDeclarationIgnoresCommentedContent)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // decl/removal/9 has a commented declaration above the actual one
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(/*
testdecl decl/removal/9
{
    diffusemap textures/old/5
}
*/)"));
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/9");

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/9");

    EXPECT_TRUE(algorithm::fileContainsText(fullPath, R"(/*
testdecl decl/removal/9
{
    diffusemap textures/old/5
}
*/)")) << "The decl manager removed the wrong declaration";
}

// Before overwriting the existing file it will be moved to .bak
TEST_F(DeclManagerTest, RemoveDeclarationCreatesBackupFile)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Create a backup copy of the decl file we're going to manipulate
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    auto expectedBackupPath = fullPath + ".bak";

    // Remove the bak file for this test
    fs::remove(expectedBackupPath);

    // We want to remove the .bak file at the end of the test
    TemporaryFile expectedBakFile(expectedBackupPath);

    // A backup copy to restore the decl file to its previous state
    BackupCopy backup(fullPath);

    // Check that both decls are there
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3a"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/2"));
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/3a");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/2");

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/3a");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3a"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/2"));

    // The backup file should be there and contain the old decl
    EXPECT_TRUE(os::fileOrDirExists(expectedBackupPath)) << "Cannot find the backup file " << expectedBackupPath;
    EXPECT_TRUE(algorithm::fileContainsText(expectedBackupPath, "testDecl decl/removal/3a"));
    EXPECT_TRUE(algorithm::fileContainsText(expectedBackupPath, "testdecl decl/removal/2"));

    // Now remove the second decl, it should overwrite the first .bak copy
    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/2");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3a"));
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testdecl decl/removal/2"));
    EXPECT_TRUE(os::fileOrDirExists(expectedBackupPath)) << "Cannot find the backup file " << expectedBackupPath;

    // The decl that got removed first should be missing in this second backup version too
    EXPECT_FALSE(algorithm::fileContainsText(expectedBackupPath, "testDecl decl/removal/3a"));
    EXPECT_TRUE(algorithm::fileContainsText(expectedBackupPath, "testdecl decl/removal/2"));
}

TEST_F(DeclManagerTest, RemoveRenamedDecl)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // A backup copy to restore the decl file to its previous state
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // Check that the decl and the lead-in comment are there
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment before decl/removal/3"));
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/3");

    GlobalDeclarationManager().renameDeclaration(decl::Type::TestDecl, "decl/removal/3", "decl/deleteMeIfYouCan/3");

    // Now remove the renamed decl, the file should be stripped from the old decl text
    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/deleteMeIfYouCan/3");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3\n")) << "The old decl is still there";
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "// Comment before decl/removal/3\n")) << "The comment has not been removed";
}

TEST_F(DeclManagerTest, RemoveRenamedDeclAfterSave)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // A backup copy to restore the decl file to its previous state
    auto fullPath = _context.getTestProjectPath() + "testdecls/removal_tests.decl";
    BackupCopy backup(fullPath);

    // Check that the decl and the lead-in comment are there
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3"));
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment before decl/removal/3"));
    expectDeclIsPresent(decl::Type::TestDecl, "decl/removal/3");

    GlobalDeclarationManager().renameDeclaration(decl::Type::TestDecl, "decl/removal/3", "decl/deleteMeIfYouCan/3");
    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/deleteMeIfYouCan/3");

    // Now save the declaration, this bakes the new name into the file
    GlobalDeclarationManager().saveDeclaration(decl);

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "testDecl decl/removal/3\n")) << "The old decl name should be gone";
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// Comment before decl/removal/3")) << "The comment should still be there";
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "decl/deleteMeIfYouCan/3")) << "The new decl name should be in the file now";

    // Now remove the renamed decl, the file should be stripped from the updated decl
    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/deleteMeIfYouCan/3");

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "decl/deleteMeIfYouCan/3")) << "The updated decl is still there";
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, "// Comment before decl/removal/3")) << "The comment has not been removed";
}

TEST_F(DeclManagerTest, RemoveUnsavedDeclaration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "decl/newlycreated/1");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/newlycreated/1");

    // Removing an in-memory decl should succeed
    EXPECT_NO_THROW(GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/newlycreated/1"));

    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/newlycreated/1");
}

TEST_F(DeclManagerTest, RenameDeclaration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/precedence_test/1");
    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/renamed/1");

    auto oldDecl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/precedence_test/1");
    auto oldSyntax = oldDecl->getBlockSyntax();

    auto result = GlobalDeclarationManager().renameDeclaration(
        decl::Type::TestDecl, "decl/precedence_test/1", "decl/renamed/1");

    EXPECT_TRUE(result) << "Rename operation should have succeeded";

    auto newName = "decl/renamed/1";
    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/precedence_test/1");
    expectDeclIsPresent(decl::Type::TestDecl, newName);

    auto newDecl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, newName);
    const auto& newSyntax = newDecl->getBlockSyntax();

    EXPECT_EQ(oldDecl->getDeclName(), newName) << "Existing Declaration reference has not been renamed";
    EXPECT_EQ(newDecl->getDeclName(), newName) << "Newly looked up declaration has not been renamed";

    // The syntax block should carry the new name too
    EXPECT_EQ(newSyntax.name, newName);

    // Check that the syntax of the renamed declaration is the same as before
    EXPECT_EQ(newSyntax.contents, oldSyntax.contents);
    EXPECT_EQ(newSyntax.getModName(), oldSyntax.getModName());
    EXPECT_EQ(newSyntax.typeName, oldSyntax.typeName);
    EXPECT_EQ(newSyntax.fileInfo.fullPath(), oldSyntax.fileInfo.fullPath());
}

TEST_F(DeclManagerTest, DeclRenamedSignal)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/precedence_test/1");
    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/renamed/1");

    auto oldDecl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/precedence_test/1");

    std::size_t signalCount = 0;
    decl::Type receivedType;
    std::string receivedOldName;
    std::string receivedNewName;
    GlobalDeclarationManager().signal_DeclRenamed().connect([&](decl::Type type, const std::string& oldName, const std::string& newName)
    {
        ++signalCount;
        receivedType = type;
        receivedOldName = oldName;
        receivedNewName = newName;
    });

    EXPECT_TRUE(GlobalDeclarationManager().renameDeclaration(
        decl::Type::TestDecl, "decl/precedence_test/1", "decl/renamed/1"));

    EXPECT_EQ(signalCount, 1) << "Signal should have been fired exactly once";
    EXPECT_EQ(receivedType, decl::Type::TestDecl) << "Wrong type delivered";
    EXPECT_EQ(receivedOldName, "decl/precedence_test/1") << "Wrong old name delivered";
    EXPECT_EQ(receivedNewName, "decl/renamed/1") << "Wrong new name delivered";
}

TEST_F(DeclManagerTest, DeclCreatedSignal)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    std::size_t signalCount = 0;
    decl::Type receivedType;
    std::string receivedDeclName;
    GlobalDeclarationManager().signal_DeclCreated().connect([&](decl::Type type, const std::string& name)
    {
        ++signalCount;
        receivedType = type;
        receivedDeclName = name;
    });

    EXPECT_FALSE(GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/newlycreated"));
    EXPECT_EQ(signalCount, 0) << "findDeclaration should not create anything";

    auto decl = GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "decl/newlycreated");
    EXPECT_TRUE(decl) << "No decl created";

    EXPECT_EQ(signalCount, 1) << "Signal should have been fired exactly once";
    EXPECT_EQ(receivedType, decl::Type::TestDecl) << "Wrong type delivered";
    EXPECT_EQ(receivedDeclName, "decl/newlycreated") << "Wrong name delivered";
}

TEST_F(DeclManagerTest, DeclRemovedSignal)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/removal/1");
    EXPECT_TRUE(decl);

    // Create a backup copy of the decl file we're going to manipulate
    BackupCopy backup(_context.getTestProjectPath() + decl->getDeclFilePath());

    std::size_t signalCount = 0;
    decl::Type receivedType;
    std::string receivedDeclName;
    GlobalDeclarationManager().signal_DeclRemoved().connect([&](decl::Type type, const std::string& name)
    {
        ++signalCount;
        receivedType = type;
        receivedDeclName = name;
    });

    GlobalDeclarationManager().removeDeclaration(decl::Type::TestDecl, "decl/removal/1");

    EXPECT_EQ(signalCount, 1) << "Signal should have been fired exactly once";
    EXPECT_EQ(receivedType, decl::Type::TestDecl) << "Wrong type delivered";
    EXPECT_EQ(receivedDeclName, "decl/removal/1") << "Wrong name delivered";
}

TEST_F(DeclManagerTest, RenameDeclarationFailsIfNotExisting)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/notexisting/1");

    auto result = GlobalDeclarationManager().renameDeclaration(
        decl::Type::TestDecl, "decl/notexisting/1", "decl/renamed/1");

    EXPECT_FALSE(result) << "Rename operation should have failed";
}

TEST_F(DeclManagerTest, RenameDeclarationFailsIfNameIsTheSame)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/precedence_test/1");

    auto result = GlobalDeclarationManager().renameDeclaration(
        decl::Type::TestDecl, "decl/precedence_test/1", "decl/precedence_test/1");

    EXPECT_FALSE(result) << "Rename operation should have failed";
}

TEST_F(DeclManagerTest, RenameDeclarationFailsIfNameIsInUse)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsPresent(decl::Type::TestDecl, "decl/numbers/1");
    expectDeclIsPresent(decl::Type::TestDecl, "decl/numbers/2");

    auto result = GlobalDeclarationManager().renameDeclaration(
        decl::Type::TestDecl, "decl/numbers/1", "decl/numbers/2");

    EXPECT_FALSE(result) << "Rename operation should have failed";
}

TEST_F(DeclManagerTest, SyntaxGeneration)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<TestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/0"));

    EXPECT_EQ(decl->getKeyValue("diffusemap"), "textures/numbers/0");

    // Expect the unchanged block to be present
    EXPECT_NE(decl->getBlockSyntax().contents.find("textures/numbers/0"), std::string::npos);
    decl->generateSyntaxInvocationCount = 0;

    // Change the declaration
    decl->setKeyValue("diffusemap", "some/other/texture");

    // The old material name should be gone now, the new one should be there
    EXPECT_EQ(decl->generateSyntaxInvocationCount, 0) << "No call to generateSyntax should have been recorded yet";
    EXPECT_EQ(decl->getBlockSyntax().contents.find("textures/numbers/0"), std::string::npos);
    EXPECT_EQ(decl->generateSyntaxInvocationCount, 1) << "A call to generateSyntax should have been recorded";
    EXPECT_NE(decl->getBlockSyntax().contents.find("some/other/texture"), std::string::npos);
    EXPECT_EQ(decl->generateSyntaxInvocationCount, 1) << "Only one call to generateSyntax should have been recorded";
}

inline void expectDeclIsPresentInFile(const ITestDeclaration::Ptr& decl, const std::string& path, bool expectPresent)
{
    auto contents = algorithm::loadTextFromVfsFile(path);

    parser::DefBlockSyntaxParser<const std::string> parser(contents);
    auto syntaxTree = parser.parse();

    std::vector<parser::DefBlockSyntax::Ptr> foundBlocks;
    auto declName = string::to_lower_copy(decl->getDeclName());

    // Run a check against our custom decl
    auto hasAllKeyValuePairs = true;

    syntaxTree->foreachBlock([&] (const parser::DefBlockSyntax::Ptr& block)
    {
        auto blockContents = block->getBlockContents();

        if (block->getName() && string::to_lower_copy(block->getName()->getString()) == declName)
        {
            foundBlocks.push_back(block);

            // Every key and every value must be present in the file
            decl->foreachKeyValue([&](std::pair<std::string, std::string> pair)
            {
                hasAllKeyValuePairs &= blockContents.find("\"" + pair.first + "\"") != std::string::npos;
                hasAllKeyValuePairs &= blockContents.find("\"" + pair.second + "\"") != std::string::npos;
            });
        }
    });

    if (expectPresent)
    {
        EXPECT_EQ(foundBlocks.size() && hasAllKeyValuePairs, 1) << "Expected exactly one decl " << declName << " in the contents in the file";
    }
    else
    {
        EXPECT_TRUE(foundBlocks.empty() || !hasAllKeyValuePairs) << "Expected no decl " << declName << " in the contents in the file";
    }
}

// Save a new declaration to a file on disk
TEST_F(DeclManagerTest, SaveNewDeclToNewFile)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "some_def"));

    decl->setKeyValue("tork", "some_value");

    // Set the decl to save its contents to a new file that doesn't exist yet
    auto syntax = decl->getBlockSyntax();
    auto fileInfo = vfs::FileInfo(TEST_DECL_FOLDER, "some_new_file.decl", vfs::Visibility::NORMAL);
    decl->setFileInfo(fileInfo);

    auto outputPath = _context.getTestProjectPath() + fileInfo.fullPath();
    EXPECT_FALSE(fs::exists(outputPath)) << "Output file shouldn't exist yet";

    // Auto-remove the file that is going to be written
    TemporaryFile outputFile(outputPath);

    GlobalDeclarationManager().saveDeclaration(decl);

    EXPECT_TRUE(fs::exists(outputPath)) << "Output file should exist now";

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);
}

// Save the decl to a file that already exists (but doesn't contain the def)
TEST_F(DeclManagerTest, SaveNewDeclToExistingFile)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "some_def346"));

    decl->setKeyValue("tork", "myvalue with spaces");

    // Set up the decl to save its contents to an existing file
    auto syntax = decl->getBlockSyntax();
    auto fileInfo = vfs::FileInfo(TEST_DECL_FOLDER, "numbers.decl", vfs::Visibility::NORMAL);
    decl->setFileInfo(fileInfo);

    auto outputPath = _context.getTestProjectPath() + syntax.fileInfo.fullPath();
    EXPECT_TRUE(fs::exists(outputPath)) << "Output file must already exist";

    // Def file should not have that decl yet
    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), false);

    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // the fixture will revert the changes to numbers.decl
}

// Save a decl to the same physical file that originally declared the decl
TEST_F(DeclManagerTest, SaveExistingDeclToExistingFile)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/1"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/1");
    decl->setKeyValue("tork", "new_value");

    // This modified decl should not be present
    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), false);

    // Save, it should be there now
    GlobalDeclarationManager().saveDeclaration(decl);
    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

// Save decl originally defined in a PK4 file to a new physical file that overrides the PK4
TEST_F(DeclManagerTest, SaveExistingDeclToNewFileOverridingPk4)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/export/1"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/1");
    decl->setKeyValue("tork", "new_value");

    // The overriding file should not be present
    auto outputPath = _context.getTestProjectPath() + decl->getBlockSyntax().fileInfo.fullPath();

    // Let the file be deleted when we're done here
    TemporaryFile outputFile(outputPath);
    EXPECT_FALSE(fs::exists(outputPath));

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), false);

    // Save, it should be there now
    GlobalDeclarationManager().saveDeclaration(decl);
    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // Check if the other decl declaration is still intact in the file (use the same path to check)
    auto export2Decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/export/2"));
    EXPECT_EQ(export2Decl->getDeclFilePath(), decl->getDeclFilePath()) << "The decls should be in the same .decl file";
    expectDeclIsPresentInFile(export2Decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    auto export0Decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/export/0"));
    EXPECT_EQ(export0Decl->getDeclFilePath(), decl->getDeclFilePath()) << "The decls should be in the same .decl file";
    expectDeclIsPresentInFile(export0Decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    auto contents = algorithm::loadTextFromVfsFile(decl->getBlockSyntax().fileInfo.fullPath());

    // Comments need to be left untouched
    EXPECT_NE(contents.find("Some comment before the declaration decl/export/0"), std::string::npos) << "Comments should be left intact";
    EXPECT_NE(contents.find("Some comment before the declaration decl/export/1"), std::string::npos) << "Comments should be left intact";
    EXPECT_NE(contents.find("Some comment before the declaration decl/export/2"), std::string::npos) << "Comments should be left intact";
}

TEST_F(DeclManagerTest, SaveDeclarationWithoutFileInfoThrows)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findOrCreateDeclaration(decl::Type::TestDecl, "newdecl/0"));

    // Sabotage the decl to ensure an empty file name
    decl->setFileInfo(vfs::FileInfo(TEST_DECL_FOLDER, "", vfs::Visibility::NORMAL));

    // Saving a decl without file info needs to throw
    EXPECT_THROW(GlobalDeclarationManager().saveDeclaration(decl), std::invalid_argument);
}

// In numbers.decl, decl/numbers/1 is declared without an explicit typename
TEST_F(DeclManagerTest, SaveExistingDeclLackingTypename)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/1"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/1");

    // Save, then it should be present in the file
    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

// In numbers.decl, testDecl decl/numbers/2 is declared using an explicit typename (case is matching)
TEST_F(DeclManagerTest, SaveExistingDeclWithMatchingTypename)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/2"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/2");

    // Save, then it should be present in the file
    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

// In numbers.decl, TestDecl decl/numbers/3 is declared using an explicit typename that has different casing
TEST_F(DeclManagerTest, SaveExistingDeclWithMixedCaseTypename)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/3");

    // Save, then it should be present in the file
    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

// Looks like this: testdecl decl/numbers/5 { // a comment in the same line as the opening brace
TEST_F(DeclManagerTest, SaveExistingDeclWithCommentInTheSameLine)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/5"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/5");

    // Save, then it should be present in the file
    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

// Decl looks like this: testdecl decl/numbers/6 { diffusemap textures/numbers/6 }
TEST_F(DeclManagerTest, SaveExistingDeclWithEverythingInASingleLine)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/6"));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/6");
    decl->setKeyValue("bumpmap", "textures/whatever/6");

    // Save, then it should be present in the file
    GlobalDeclarationManager().saveDeclaration(decl);

    expectDeclIsPresentInFile(decl, decl->getBlockSyntax().fileInfo.fullPath(), true);

    // The test fixture will restore the original file contents in TearDown
}

TEST_F(DeclManagerTest, SaveExistingDeclAfterRename)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<ITestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3"));

    // Remember the contents of this decl
    auto oldContent = decl->getBlockSyntax().contents;

    auto fullPath = GlobalFileSystem().findFile(decl->getDeclFilePath()) + decl->getDeclFilePath();
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, oldContent));

    // Swap some contents of this decl
    decl->setKeyValue("diffusemap", "textures/changed/3");

    auto newName = "decl/changed/3";
    GlobalDeclarationManager().renameDeclaration(decl->getDeclType(), decl->getDeclName(), newName);

    // Get the new block content
    auto newContent = decl->getBlockSyntax().contents;

    // Both the new name and the new content should not be present anywhere in the file
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, newName)) << "New name should not be present yet";
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, newContent)) << "New content should not be present yet";

    // Save the renamed declaration, this should remove the old decl and store the new one
    GlobalDeclarationManager().saveDeclaration(decl);

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, oldContent)) << "The old content should be gone";

    EXPECT_TRUE(algorithm::fileContainsText(fullPath, newName)) << "New name should be present now";
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, newContent)) << "New content should be present now";

    // Ensure that the comment has not been removed from the file after renaming
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, "// CamelCase typename shouldn't make a difference"))
        << "The comment has been removed, it should have remained intact";

    // Now rename the decl again, and save again, this should work too
    auto newName2 = "decl/changedAgain/3";
    GlobalDeclarationManager().renameDeclaration(decl::Type::TestDecl, newName, newName2);

    // The new name should not be present anywhere in the file yet
    EXPECT_FALSE(algorithm::fileContainsText(fullPath, newName2)) << "New name 2 should not be present yet";

    // Save the renamed declaration, this should remove the old decl and store the new one
    GlobalDeclarationManager().saveDeclaration(decl);

    EXPECT_FALSE(algorithm::fileContainsText(fullPath, newName)) << "The intermediate name should not be present anymore";
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, newName2)) << "New name 2 should be present now";
    EXPECT_TRUE(algorithm::fileContainsText(fullPath, newContent)) << "New content should still be present";

    // The test fixture will restore the original file contents in TearDown
}

TEST_F(DeclManagerTest, SetDeclFileInfo)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3");

    decl->setFileInfo(vfs::FileInfo("materials/", "testfile.mtr", vfs::Visibility::HIDDEN));

    EXPECT_EQ(decl->getBlockSyntax().fileInfo.name, "testfile.mtr");
    EXPECT_EQ(decl->getBlockSyntax().fileInfo.topDir, "materials/");
    EXPECT_EQ(decl->getBlockSyntax().fileInfo.visibility, vfs::Visibility::HIDDEN);
}

TEST_F(DeclManagerTest, SetDeclName)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3");

    auto newName = "decl/changed/3333";
    decl->setDeclName(newName);

    EXPECT_EQ(decl->getDeclName(), newName) << "New name not accepted by the decl";
    EXPECT_EQ(decl->getBlockSyntax().name, newName) << "New name not propagated to the decl block syntax";
}

// Changed signal should fire on assigning a new syntax block
TEST_F(DeclManagerTest, ChangedSignalOnSyntaxBlockChange)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3");

    std::size_t changedSignalReceiveCount = 0;
    decl->signal_DeclarationChanged().connect([&] { ++changedSignalReceiveCount; });

    // Assign a new syntax block, this should emit the signal
    auto syntax = decl->getBlockSyntax();
    syntax.contents += "\n";
    decl->setBlockSyntax(syntax);

    EXPECT_EQ(changedSignalReceiveCount, 1) << "Changed signal should have fired once after assigning the syntax block";
}

// Change signal should fire when an EditableDeclaration is modified
TEST_F(DeclManagerTest, ChangedSignalOnEdit)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    auto decl = std::static_pointer_cast<TestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3"));

    std::size_t changedSignalReceiveCount = 0;
    decl->signal_DeclarationChanged().connect([&] { ++changedSignalReceiveCount; });

    // Change the editable declaration
    decl->setKeyValue("nork", "tork");

    EXPECT_EQ(changedSignalReceiveCount, 1) << "Changed signal should have fired once after editing the decl";
}

TEST_F(DeclManagerTest, GameConfigChangeTriggerReload)
{
    auto temporaryFmPath = _context.getTestResourcePath() + "temporaryGameFolder/";

    auto declFolder = temporaryFmPath + "testdecls/";
    fs::create_directories(declFolder);
    auto tempDeclFile = declFolder + "test.decl";
    algorithm::replaceFileContents(tempDeclFile, R"(
decl/temporaryGame/1
{
    diffusemap something
}
)");

    // Register the custom decl type, it should not touch that temporary FM folder
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    expectDeclIsNotPresent(decl::Type::TestDecl, "decl/temporaryGame/1");
    
    // The numbers/3 decl is only present in the unchanged game config
    auto number3 = std::static_pointer_cast<TestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3"));

    std::size_t declarationsReloadingSignalCount = 0;
    std::size_t declarationsReloadedSignalCount = 0;

    GlobalDeclarationManager().signal_DeclsReloaded(decl::Type::TestDecl).connect([&]() { declarationsReloadedSignalCount++; });
    GlobalDeclarationManager().signal_DeclsReloading(decl::Type::TestDecl).connect([&]() { declarationsReloadingSignalCount++; });

    // Apply the new game config, this should reparse the decls in the new VFS search folders
    auto config = GlobalGameManager().getConfig();
    config.modPath = temporaryFmPath;
    GlobalGameManager().applyConfig(config);

    // This one should be present now
    expectDeclIsPresent(decl::Type::TestDecl, "decl/temporaryGame/1");

    // Clean up the temporary FM path
    fs::remove_all(temporaryFmPath);
}

// #6189: Assigning a new syntax block on a previously missing declaration didn't clear
// the internal _syntaxBlockInvalidated flag of EditableDeclarations, which caused
// the new syntax block contents to be immediately overwritten by generateSyntax()
TEST_F(DeclManagerTest, AssigningSyntaxBlockOverridesModification)
{
    GlobalDeclarationManager().registerDeclType("testdecl", std::make_shared<TestDeclarationCreator>());
    GlobalDeclarationManager().registerDeclFolder(decl::Type::TestDecl, TEST_DECL_FOLDER, ".decl");

    // Find an existing decl
    auto decl = std::static_pointer_cast<TestDeclaration>(
        GlobalDeclarationManager().findDeclaration(decl::Type::TestDecl, "decl/numbers/3"));

    // Retrieve a valid syntax block
    auto syntax = decl->getBlockSyntax();

    // This will internally mark the declaration as "modified after parsing"
    decl->setKeyValue("description", "This decl is missing and has been modified");
    decl->setFileInfo(vfs::FileInfo(TEST_DECL_FOLDER, "_autogenerated.decl", vfs::Visibility::NORMAL));

    syntax.contents = R"(
    "description" "assigned"
)";

    // Assigning a new syntax block after parsing should work even if the decl has been modified
    decl->setBlockSyntax(syntax);

    EXPECT_EQ(decl->getKeyValue("description"), "assigned") << "Assigned syntax block didn't take effect";
}

}