/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2020 - Raw Material Software Limited

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).

   End User License Agreement: www.juce.com/juce-6-licence
   Privacy Policy: www.juce.com/juce-privacy-policy

   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

#pragma once

#include "../Project/jucer_Project.h"
#include "../Utility/UI/PropertyComponents/jucer_PropertyComponentsWithEnablement.h"
#include "../Utility/Helpers/jucer_ValueWithDefaultWrapper.h"
#include "../Project/Modules/jucer_Modules.h"

class ProjectSaver;

//==============================================================================
class ProjectExporter  : private Value::Listener
{
public:
    ProjectExporter (Project&, const ValueTree& settings);
    virtual ~ProjectExporter() override = default;

    //==============================================================================
    struct ExporterTypeInfo
    {
        Identifier identifier;
        String displayName;
        String targetFolder;

        Image icon;
    };

    static std::vector<ExporterTypeInfo> getExporterTypeInfos();
    static ExporterTypeInfo getTypeInfoForExporter (const Identifier& exporterIdentifier);
    static ExporterTypeInfo getCurrentPlatformExporterTypeInfo();

    static std::unique_ptr<ProjectExporter> createNewExporter (Project&, const Identifier& exporterIdentifier);
    static std::unique_ptr<ProjectExporter> createExporterFromSettings (Project&, const ValueTree& settings);

    static bool canProjectBeLaunched (Project*);

    virtual Identifier getExporterIdentifier() const = 0;

    //==============================================================================
    // capabilities of exporter
    virtual bool usesMMFiles() const = 0;
    virtual void createExporterProperties (PropertyListBuilder&) = 0;
    virtual bool canLaunchProject() = 0;
    virtual bool launchProject() = 0;
    virtual void create (const OwnedArray<LibraryModule>&) const = 0; // may throw a SaveError
    virtual bool shouldFileBeCompiledByDefault (const File& path) const;
    virtual bool canCopeWithDuplicateFiles() = 0;
    virtual bool supportsUserDefinedConfigurations() const = 0; // false if exporter only supports two configs Debug and Release
    virtual void updateDeprecatedSettings()               {}
    virtual void updateDeprecatedSettingsInteractively()  {}
    virtual void initialiseDependencyPathValues()         {}

    // IDE targeted by exporter
    virtual bool isXcode() const         = 0;
    virtual bool isVisualStudio() const  = 0;
    virtual bool isCodeBlocks() const    = 0;
    virtual bool isMakefile() const      = 0;
    virtual bool isAndroidStudio() const = 0;
    virtual bool isCLion() const         = 0;

    // operating system targeted by exporter
    virtual bool isAndroid() const = 0;
    virtual bool isWindows() const = 0;
    virtual bool isLinux() const   = 0;
    virtual bool isOSX() const     = 0;
    virtual bool isiOS() const     = 0;

    virtual File getIDEProjectFile() const  { return {}; }

    virtual String getNewLineString() const = 0;
    virtual String getDescription()  { return {}; }

    virtual bool supportsPrecompiledHeaders() const  { return false; }

    //==============================================================================
    // cross-platform audio plug-ins supported by exporter
    virtual bool supportsTargetType (build_tools::ProjectType::Target::Type type) const = 0;

    inline bool shouldBuildTargetType (build_tools::ProjectType::Target::Type type) const
    {
        return project.shouldBuildTargetType (type) && supportsTargetType (type);
    }

    inline void callForAllSupportedTargets (std::function<void (build_tools::ProjectType::Target::Type)> callback)
    {
        for (int i = 0; i < build_tools::ProjectType::Target::unspecified; ++i)
            if (shouldBuildTargetType (static_cast<build_tools::ProjectType::Target::Type> (i)))
                callback (static_cast<build_tools::ProjectType::Target::Type> (i));
    }

    //==============================================================================
    bool mayCompileOnCurrentOS() const
    {
       #if JUCE_MAC
        return isOSX() || isAndroid() || isiOS();
       #elif JUCE_WINDOWS
        return isWindows() || isAndroid();
       #elif JUCE_LINUX
        return isLinux() || isAndroid();
       #elif JUCE_BSD
        return isLinux();
       #else
        #error
       #endif
    }

    //==============================================================================
    String getUniqueName() const;
    File getTargetFolder() const;

    Project& getProject() noexcept                        { return project; }
    const Project& getProject() const noexcept            { return project; }

    UndoManager* getUndoManager() const                   { return project.getUndoManagerFor (settings); }

    Value getSetting (const Identifier& nm)               { return settings.getPropertyAsValue (nm, project.getUndoManagerFor (settings)); }
    String getSettingString (const Identifier& nm) const  { return settings [nm]; }

    Value getTargetLocationValue()                        { return targetLocationValue.getPropertyAsValue(); }
    String getTargetLocationString() const                { return targetLocationValue.get(); }

    String getExtraCompilerFlagsString() const            { return extraCompilerFlagsValue.get().toString().replaceCharacters ("\r\n", "  "); }
    String getExtraLinkerFlagsString() const              { return extraLinkerFlagsValue.get().toString().replaceCharacters ("\r\n", "  "); }

    StringArray getExternalLibrariesStringArray() const   { return getSearchPathsFromString (externalLibrariesValue.get().toString()); }
    String getExternalLibrariesString() const             { return getExternalLibrariesStringArray().joinIntoString (";"); }

    bool shouldUseGNUExtensions() const                   { return gnuExtensionsValue.get(); }

    String getVSTLegacyPathString() const                 { return vstLegacyPathValueWrapper.getCurrentValue(); }
    String getAAXPathString() const                       { return aaxPathValueWrapper.getCurrentValue(); }
    String getRTASPathString() const                      { return rtasPathValueWrapper.getCurrentValue(); }

    // NB: this is the path to the parent "modules" folder that contains the named module, not the
    // module folder itself.
    ValueWithDefault getPathForModuleValue (const String& moduleID);
    String getPathForModuleString (const String& moduleID) const;
    void removePathForModule (const String& moduleID);

    TargetOS::OS getTargetOSForExporter() const;

    build_tools::RelativePath getLegacyModulePath (const String& moduleID) const;
    String getLegacyModulePath() const;

    // Returns a path to the actual module folder itself
    build_tools::RelativePath getModuleFolderRelativeToProject (const String& moduleID) const;
    void updateOldModulePaths();

    build_tools::RelativePath rebaseFromProjectFolderToBuildTarget (const build_tools::RelativePath& path) const;
    void addToExtraSearchPaths (const build_tools::RelativePath& pathFromProjectFolder, int index = -1);
    void addToModuleLibPaths   (const build_tools::RelativePath& pathFromProjectFolder);

    void addProjectPathToBuildPathList (StringArray&, const build_tools::RelativePath&, int index = -1) const;

    std::unique_ptr<Drawable> getBigIcon() const;
    std::unique_ptr<Drawable> getSmallIcon() const;
    build_tools::Icons getIcons() const { return { getSmallIcon(), getBigIcon() }; }

    String getExporterIdentifierMacro() const
    {
        return "JUCER_" + settings.getType().toString() + "_"
                + String::toHexString (getTargetLocationString().hashCode()).toUpperCase();
    }

    // An exception that can be thrown by the create() method.
    void createPropertyEditors (PropertyListBuilder&);
    void addSettingsForProjectType (const build_tools::ProjectType&);

    //==============================================================================
    void copyMainGroupFromProject();
    Array<Project::Item>& getAllGroups() noexcept               { jassert (itemGroups.size() > 0); return itemGroups; }
    const Array<Project::Item>& getAllGroups() const noexcept   { jassert (itemGroups.size() > 0); return itemGroups; }
    Project::Item& getModulesGroup();

    //==============================================================================
    StringArray linuxLibs, linuxPackages, makefileExtraLinkerFlags;

    enum class PackageDependencyType
    {
        compile,
        link
    };

    StringArray getLinuxPackages (PackageDependencyType type) const;

    //==============================================================================
    StringPairArray msvcExtraPreprocessorDefs;
    String msvcDelayLoadedDLLs;
    StringArray mingwLibs, windowsLibs;

    //==============================================================================
    StringArray androidLibs;

    //==============================================================================
    StringArray extraSearchPaths;
    StringArray moduleLibSearchPaths;

    //==============================================================================
    class BuildConfiguration  : public ReferenceCountedObject
    {
    public:
        BuildConfiguration (Project& project, const ValueTree& configNode, const ProjectExporter&);
        ~BuildConfiguration();

        using Ptr = ReferenceCountedObjectPtr<BuildConfiguration>;

        //==============================================================================
        virtual void createConfigProperties (PropertyListBuilder&) = 0;
        virtual String getModuleLibraryArchName() const = 0;

        //==============================================================================
        String getName() const                                 { return configNameValue.get(); }
        bool isDebug() const                                   { return isDebugValue.get(); }

        String getTargetBinaryRelativePathString() const       { return targetBinaryPathValue.get(); }
        String getTargetBinaryNameString (bool isUnityPlugin = false) const
        {
            return (isUnityPlugin ? Project::addUnityPluginPrefixIfNecessary (targetNameValue.get().toString())
                                  : targetNameValue.get().toString());
        }

        int getOptimisationLevelInt() const                    { return optimisationLevelValue.get(); }
        String getGCCOptimisationFlag() const;
        bool isLinkTimeOptimisationEnabled() const             { return linkTimeOptimisationValue.get(); }

        String getBuildConfigPreprocessorDefsString() const    { return ppDefinesValue.get(); }
        StringPairArray getAllPreprocessorDefs() const;        // includes inherited definitions
        StringPairArray getUniquePreprocessorDefs() const;     // returns pre-processor definitions that are not already in the project pre-processor defs

        String getHeaderSearchPathString() const               { return headerSearchPathValue.get(); }
        StringArray getHeaderSearchPaths() const;

        String getLibrarySearchPathString() const              { return librarySearchPathValue.get(); }
        StringArray getLibrarySearchPaths() const;

        String getPrecompiledHeaderFilename() const            { return "JucePrecompiledHeader_" + getName(); }
        static String getSkipPrecompiledHeaderDefine()         { return "JUCE_SKIP_PRECOMPILED_HEADER"; }

        bool shouldUsePrecompiledHeaderFile() const            { return usePrecompiledHeaderFileValue.get(); }
        String getPrecompiledHeaderFileContent() const;

        //==============================================================================
        Value getValue (const Identifier& nm)                  { return config.getPropertyAsValue (nm, getUndoManager()); }
        UndoManager* getUndoManager() const                    { return project.getUndoManagerFor (config); }

        //==============================================================================
        void createPropertyEditors (PropertyListBuilder&);
        void addRecommendedLinuxCompilerWarningsProperty (PropertyListBuilder&);
        void addRecommendedLLVMCompilerWarningsProperty (PropertyListBuilder&);

        struct CompilerNames
        {
            static constexpr const char* gcc = "GCC";
            static constexpr const char* llvm = "LLVM";
        };

        struct CompilerWarningFlags
        {
            static CompilerWarningFlags getRecommendedForGCCAndLLVM()
            {
                CompilerWarningFlags result;
                result.common = { "-Wall", "-Wstrict-aliasing", "-Wuninitialized", "-Wunused-parameter",
                                  "-Wswitch-enum", "-Wsign-conversion", "-Wsign-compare",
                                  "-Wunreachable-code", "-Wcast-align", "-Wno-ignored-qualifiers" };
                result.cpp = { "-Woverloaded-virtual", "-Wreorder", "-Wzero-as-null-pointer-constant" };

                return result;
            }

            StringArray common;
            StringArray cpp;
        };

        CompilerWarningFlags getRecommendedCompilerWarningFlags() const;

        void addGCCOptimisationProperty (PropertyListBuilder&);
        void removeFromExporter();

        //==============================================================================
        ValueTree config;
        Project& project;
        const ProjectExporter& exporter;

    protected:
        ValueWithDefault isDebugValue, configNameValue, targetNameValue, targetBinaryPathValue, recommendedWarningsValue, optimisationLevelValue,
                         linkTimeOptimisationValue, ppDefinesValue, headerSearchPathValue, librarySearchPathValue, userNotesValue,
                         usePrecompiledHeaderFileValue, precompiledHeaderFileValue;

    private:
        std::map<String, CompilerWarningFlags> recommendedCompilerWarningFlags;

        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BuildConfiguration)
    };

    void addNewConfigurationFromExisting (const BuildConfiguration& configToCopy);
    void addNewConfiguration (bool isDebugConfig);
    bool hasConfigurationNamed (const String& name) const;
    String getUniqueConfigName (String name) const;

    String getExternalLibraryFlags (const BuildConfiguration& config) const;

    //==============================================================================
    struct ConfigIterator
    {
        ConfigIterator (ProjectExporter& exporter);

        bool next();

        BuildConfiguration& operator*() const       { return *config; }
        BuildConfiguration* operator->() const      { return config.get(); }

        BuildConfiguration::Ptr config;
        int index;

    private:
        ProjectExporter& exporter;
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ConfigIterator)
    };

    struct ConstConfigIterator
    {
        ConstConfigIterator (const ProjectExporter& exporter);

        bool next();

        const BuildConfiguration& operator*() const       { return *config; }
        const BuildConfiguration* operator->() const      { return config.get(); }

        BuildConfiguration::Ptr config;
        int index;

    private:
        const ProjectExporter& exporter;
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ConstConfigIterator)
    };

    int getNumConfigurations() const;
    BuildConfiguration::Ptr getConfiguration (int index) const;

    ValueTree getConfigurations() const;
    virtual void createDefaultConfigs();
    void createDefaultModulePaths();

    //==============================================================================
    Value getExporterPreprocessorDefsValue()            { return extraPPDefsValue.getPropertyAsValue(); }
    String getExporterPreprocessorDefsString() const    { return extraPPDefsValue.get(); }

    // includes exporter, project + config defs
    StringPairArray getAllPreprocessorDefs (const BuildConfiguration& config, const build_tools::ProjectType::Target::Type targetType) const;
    // includes exporter + project defs
    StringPairArray getAllPreprocessorDefs() const;

    void addTargetSpecificPreprocessorDefs (StringPairArray& defs, const build_tools::ProjectType::Target::Type targetType) const;

    String replacePreprocessorTokens (const BuildConfiguration&, const String& sourceString) const;

    ValueTree settings;

    enum GCCOptimisationLevel
    {
        gccO0     = 1,
        gccO1     = 4,
        gccO2     = 5,
        gccO3     = 3,
        gccOs     = 2,
        gccOfast  = 6
    };

    bool isPCHEnabledForAnyConfigurations() const
    {
        if (supportsPrecompiledHeaders())
            for (ConstConfigIterator config (*this); config.next();)
                if (config->shouldUsePrecompiledHeaderFile())
                    return true;

        return false;
    }

protected:
    //==============================================================================
    String name;
    Project& project;
    const build_tools::ProjectType& projectType;
    const String projectName;
    const File projectFolder;

    //==============================================================================
    ValueWithDefaultWrapper vstLegacyPathValueWrapper, rtasPathValueWrapper, aaxPathValueWrapper;

    ValueWithDefault targetLocationValue, extraCompilerFlagsValue, extraLinkerFlagsValue, externalLibrariesValue,
                     userNotesValue, gnuExtensionsValue, bigIconValue, smallIconValue, extraPPDefsValue;

    Value projectCompilerFlagSchemesValue;
    HashMap<String, ValueWithDefault> compilerFlagSchemesMap;

    mutable Array<Project::Item> itemGroups;
    Project::Item* modulesGroup = nullptr;

    virtual BuildConfiguration::Ptr createBuildConfig (const ValueTree&) const = 0;

    void addDefaultPreprocessorDefs (StringPairArray&) const;

    static String getDefaultBuildsRootFolder()            { return "Builds/"; }

    static String getStaticLibbedFilename (String name)   { return addSuffix (addLibPrefix (name), ".a"); }
    static String getDynamicLibbedFilename (String name)  { return addSuffix (addLibPrefix (name), ".so"); }

    virtual void addPlatformSpecificSettingsForProjectType (const build_tools::ProjectType&) = 0;

    //==============================================================================
    static void createDirectoryOrThrow (const File& dirToCreate)
    {
        if (! dirToCreate.createDirectory())
            throw build_tools::SaveError ("Can't create folder: " + dirToCreate.getFullPathName());
    }

    static void writeXmlOrThrow (const XmlElement& xml, const File& file, const String& encoding,
                                 int maxCharsPerLine, bool useUnixNewLines = false)
    {
        XmlElement::TextFormat format;
        format.customEncoding = encoding;
        format.lineWrapLength = maxCharsPerLine;
        format.newLineChars = useUnixNewLines ? "\n" : "\r\n";

        MemoryOutputStream mo (8192);
        xml.writeTo (mo, format);
        build_tools::overwriteFileIfDifferentOrThrow (file, mo);
    }

private:
    //==============================================================================
    void valueChanged (Value&) override   { updateCompilerFlagValues(); }
    void updateCompilerFlagValues();

    //==============================================================================
    static String addLibPrefix (const String name)
    {
        return name.startsWith ("lib") ? name
                                       : "lib" + name;
    }

    static String addSuffix (const String name, const String suffix)
    {
        return name.endsWithIgnoreCase (suffix) ? name
                                                : name + suffix;
    }

    void createDependencyPathProperties (PropertyListBuilder&);
    void createIconProperties (PropertyListBuilder&);
    void addVSTPathsIfPluginOrHost();
    void addCommonAudioPluginSettings();
    void addLegacyVSTFolderToPathIfSpecified();
    build_tools::RelativePath getInternalVST3SDKPath();
    void addAAXFoldersToPath();

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProjectExporter)
};