require "helper"
require "thor/parser"

describe Thor::Options do
  def create(opts, defaults = {}, stop_on_unknown = false, exclusives = [], at_least_ones = [])
    relation = {
      exclusive_option_names: exclusives,
      at_least_one_option_names: at_least_ones
    }
    opts.each do |key, value|
      opts[key] = Thor::Option.parse(key, value) unless value.is_a?(Thor::Option)
    end
    @opt = Thor::Options.new(opts, defaults, stop_on_unknown, false, relation)
  end

  def parse(*args)
    @opt.parse(args.flatten)
  end

  def check_unknown!
    @opt.check_unknown!
  end

  def remaining
    @opt.remaining
  end

  describe "#to_switches" do
    it "turns true values into a flag" do
      expect(Thor::Options.to_switches(color: true)).to eq("--color")
    end

    it "ignores nil" do
      expect(Thor::Options.to_switches(color: nil)).to eq("")
    end

    it "ignores false" do
      expect(Thor::Options.to_switches(color: false)).to eq("")
    end

    it "avoids extra spaces" do
      expect(Thor::Options.to_switches(color: false, foo: nil)).to eq("")
    end

    it "writes --name value for anything else" do
      expect(Thor::Options.to_switches(format: "specdoc")).to eq('--format "specdoc"')
    end

    it "joins several values" do
      switches = Thor::Options.to_switches(color: true, foo: "bar").split(" ").sort
      expect(switches).to eq(%w("bar" --color --foo))
    end

    it "accepts arrays" do
      expect(Thor::Options.to_switches(count: [1, 2, 3])).to eq("--count 1 2 3")
    end

    it "accepts hashes" do
      expect(Thor::Options.to_switches(count: {a: :b})).to eq("--count a:b")
    end

    it "accepts underscored options" do
      expect(Thor::Options.to_switches(under_score_option: "foo bar")).to eq('--under_score_option "foo bar"')
    end
  end

  describe "#parse" do
    it "allows multiple aliases for a given switch" do
      create %w(--foo --bar --baz) => :string
      expect(parse("--foo", "12")["foo"]).to eq("12")
      expect(parse("--bar", "12")["foo"]).to eq("12")
      expect(parse("--baz", "12")["foo"]).to eq("12")
    end

    it "allows custom short names" do
      create "-f" => :string
      expect(parse("-f", "12")).to eq("f" => "12")
    end

    it "allows custom short-name aliases" do
      create %w(--bar -f) => :string
      expect(parse("-f", "12")).to eq("bar" => "12")
    end

    it "accepts conjoined short switches" do
      create %w(--foo -f) => true, %w(--bar -b) => true, %w(--app -a) => true
      opts = parse("-fba")
      expect(opts["foo"]).to be true
      expect(opts["bar"]).to be true
      expect(opts["app"]).to be true
    end

    it "accepts conjoined short switches with input" do
      create %w(--foo -f) => true, %w(--bar -b) => true, %w(--app -a) => :required
      opts = parse "-fba", "12"
      expect(opts["foo"]).to be true
      expect(opts["bar"]).to be true
      expect(opts["app"]).to eq("12")
    end

    it "returns the default value if none is provided" do
      create foo: "baz", bar: :required
      expect(parse("--bar", "boom")["foo"]).to eq("baz")
    end

    it "returns the default value from defaults hash to required arguments" do
      create Hash[bar: :required], Hash[bar: "baz"]
      expect(parse["bar"]).to eq("baz")
    end

    it "gives higher priority to defaults given in the hash" do
      create Hash[bar: true], Hash[bar: false]
      expect(parse["bar"]).to eq(false)
    end

    it "raises an error for unknown switches" do
      create foo: "baz", bar: :required
      parse("--bar", "baz", "--baz", "unknown")

      expected = "Unknown switches \"--baz\"".dup
      expected << "\nDid you mean?  \"--bar\"" if Thor::Correctable

      expect { check_unknown! }.to raise_error(Thor::UnknownArgumentError) do |error|
        expect(error.to_s).to eq(expected)
      end
    end

    it "skips leading non-switches" do
      create(foo: "baz")

      expect(parse("asdf", "--foo", "bar")).to eq("foo" => "bar")
    end

    it "correctly recognizes things that look kind of like options, but aren't, as not options" do
      create(foo: "baz")
      expect(parse("--asdf---asdf", "baz", "--foo", "--asdf---dsf--asdf")).to eq("foo" => "--asdf---dsf--asdf")
      check_unknown!
    end

    it "accepts underscores in commandline args hash for boolean" do
      create foo_bar: :boolean
      expect(parse("--foo_bar")["foo_bar"]).to eq(true)
      expect(parse("--no_foo_bar")["foo_bar"]).to eq(false)
    end

    it "accepts underscores in commandline args hash for strings" do
      create foo_bar: :string, baz_foo: :string
      expect(parse("--foo_bar", "baz")["foo_bar"]).to eq("baz")
      expect(parse("--baz_foo", "foo bar")["baz_foo"]).to eq("foo bar")
    end

    it "interprets everything after -- as args instead of options" do
      create(foo: :string, bar: :required)
      expect(parse(%w(--bar abc moo -- --foo def -a))).to eq("bar" => "abc")
      expect(remaining).to eq(%w(moo --foo def -a))
    end

    it "ignores -- when looking for single option values" do
      create(foo: :string, bar: :required)
      expect(parse(%w(--bar -- --foo def -a))).to eq("bar" => "--foo")
      expect(remaining).to eq(%w(def -a))
    end

    it "ignores -- when looking for array option values" do
      create(foo: :array)
      expect(parse(%w(--foo a b -- c d -e))).to eq("foo" => %w(a b c d -e))
      expect(remaining).to eq([])
    end

    it "ignores -- when looking for hash option values" do
      create(foo: :hash)
      expect(parse(%w(--foo a:b -- c:d -e))).to eq("foo" => {"a" => "b", "c" => "d"})
      expect(remaining).to eq(%w(-e))
    end

    it "ignores trailing --" do
      create(foo: :string)
      expect(parse(%w(--foo --))).to eq("foo" => nil)
      expect(remaining).to eq([])
    end

    describe "with no input" do
      it "and no switches returns an empty hash" do
        create({})
        expect(parse).to eq({})
      end

      it "and several switches returns an empty hash" do
        create "--foo" => :boolean, "--bar" => :string
        expect(parse).to eq({})
      end

      it "and a required switch raises an error" do
        create "--foo" => :required
        expect { parse }.to raise_error(Thor::RequiredArgumentMissingError, "No value provided for required options '--foo'")
      end
    end

    describe "with one required and one optional switch" do
      before do
        create "--foo" => :required, "--bar" => :boolean
      end

      it "raises an error if the required switch has no argument" do
        expect { parse("--foo") }.to raise_error(Thor::MalformattedArgumentError)
      end

      it "raises an error if the required switch isn't given" do
        expect { parse("--bar") }.to raise_error(Thor::RequiredArgumentMissingError)
      end

      it "raises an error if the required switch is set to nil" do
        expect { parse("--no-foo") }.to raise_error(Thor::RequiredArgumentMissingError)
      end

      it "does not raises an error if the required option has a default value" do
        options = {required: true, type: :string, default: "baz"}
        create foo: Thor::Option.new("foo", options), bar: :boolean
        expect { parse("--bar") }.not_to raise_error
      end
    end

    context "when stop_on_unknown is true" do
      before do
        create({foo: :string, verbose: :boolean}, {}, true)
      end

      it "stops parsing on first non-option" do
        expect(parse(%w(foo --verbose))).to eq({})
        expect(remaining).to eq(%w(foo --verbose))
      end

      it "stops parsing on unknown option" do
        expect(parse(%w(--bar --verbose))).to eq({})
        expect(remaining).to eq(%w(--bar --verbose))
      end

      it "retains -- after it has stopped parsing" do
        expect(parse(%w(--bar -- whatever))).to eq({})
        expect(remaining).to eq(%w(--bar -- whatever))
      end

      it "still accepts options that are given before non-options" do
        expect(parse(%w(--verbose foo))).to eq("verbose" => true)
        expect(remaining).to eq(%w(foo))
      end

      it "still accepts options that require a value" do
        expect(parse(%w(--foo bar baz))).to eq("foo" => "bar")
        expect(remaining).to eq(%w(baz))
      end

      it "still interprets everything after -- as args instead of options" do
        expect(parse(%w(-- --verbose))).to eq({})
        expect(remaining).to eq(%w(--verbose))
      end
    end

    context "when exclusives is given" do
      before do
        create({foo: :boolean, bar: :boolean, baz: :boolean, qux: :boolean}, {}, false,
               [["foo", "bar"], ["baz","qux"]])
      end

      it "raises an error if exclusive argumets are given" do
        expect{parse(%w[--foo --bar])}.to raise_error(Thor::ExclusiveArgumentError, "Found exclusive options '--foo', '--bar'")
      end

      it "does not raise an error if exclusive argumets are not given" do
        expect{parse(%w[--foo --baz])}.not_to raise_error
      end
    end

    context "when at_least_ones is given" do
      before do
        create({foo: :string, bar: :boolean, baz: :boolean, qux: :boolean}, {}, false,
               [], [["foo", "bar"], ["baz","qux"]])
      end

      it "raises an error if at least one of required argumet is not given" do
        expect{parse(%w[--baz])}.to raise_error(Thor::AtLeastOneRequiredArgumentError, "Not found at least one of required options '--foo', '--bar'")
      end

      it "does not raise an error if at least one of required argument is given" do
        expect{parse(%w[--foo --baz])}.not_to raise_error
      end
    end

    context "when exclusives is given" do
      before do
        create({foo: :boolean, bar: :boolean, baz: :boolean, qux: :boolean}, {}, false,
               [["foo", "bar"], ["baz","qux"]])
      end

      it "raises an error if exclusive argumets are given" do
        expect{parse(%w[--foo --bar])}.to raise_error(Thor::ExclusiveArgumentError, "Found exclusive options '--foo', '--bar'")
      end

      it "does not raise an error if exclusive argumets are not given" do
        expect{parse(%w[--foo --baz])}.not_to raise_error
      end
    end

    context "when at_least_ones is given" do
      before do
        create({foo: :string, bar: :boolean, baz: :boolean, qux: :boolean}, {}, false,
               [], [["foo", "bar"], ["baz","qux"]])
      end

      it "raises an error if at least one of required argumet is not given" do
        expect{parse(%w[--baz])}.to raise_error(Thor::AtLeastOneRequiredArgumentError, "Not found at least one of required options '--foo', '--bar'")
      end

      it "does not raise an error if at least one of required argument is given" do
        expect{parse(%w[--foo --baz])}.not_to raise_error
      end
    end

    describe "with :string type" do
      before do
        create %w(--foo -f) => :required
      end

      it "accepts a switch <value> assignment" do
        expect(parse("--foo", "12")["foo"]).to eq("12")
      end

      it "accepts a switch=<value> assignment" do
        expect(parse("-f=12")["foo"]).to eq("12")
        expect(parse("--foo=12")["foo"]).to eq("12")
        expect(parse("--foo=bar=baz")["foo"]).to eq("bar=baz")
        expect(parse("--foo=-bar")["foo"]).to eq("-bar")
        expect(parse("--foo=-bar -baz")["foo"]).to eq("-bar -baz")
      end

      it "must accept underscores switch=value assignment" do
        create foo_bar: :required
        expect(parse("--foo_bar=http://example.com/under_score/")["foo_bar"]).to eq("http://example.com/under_score/")
      end

      it "accepts a --no-switch format" do
        create "--foo" => "bar"
        expect(parse("--no-foo")["foo"]).to be nil
      end

      it "does not consume an argument for --no-switch format" do
        create "--cheese" => :string
        expect(parse("burger", "--no-cheese", "fries")["cheese"]).to be nil
      end

      it "accepts a --switch format on non required types" do
        create "--foo" => :string
        expect(parse("--foo")["foo"]).to eq("foo")
      end

      it "accepts a --switch format on non required types with default values" do
        create "--baz" => :string, "--foo" => "bar"
        expect(parse("--baz", "bang", "--foo")["foo"]).to eq("bar")
      end

      it "overwrites earlier values with later values" do
        expect(parse("--foo=bar", "--foo", "12")["foo"]).to eq("12")
        expect(parse("--foo", "12", "--foo", "13")["foo"]).to eq("13")
      end

      it "raises error when value isn't in enum" do
        enum = %w(apple banana)
        create fruit: Thor::Option.new("fruit", type: :string, enum: enum)
        expect { parse("--fruit", "orange") }.to raise_error(Thor::MalformattedArgumentError,
            "Expected '--fruit' to be one of #{enum.join(', ')}; got orange")
      end

      it "does not erroneously mutate defaults" do
        create foo: Thor::Option.new("foo", type: :string, repeatable: true, required: false, default: [])
        expect(parse("--foo=bar", "--foo", "12")["foo"]).to eq(["bar", "12"])
        expect(@opt.instance_variable_get(:@switches)["--foo"].default).to eq([])
      end
    end

    describe "with :boolean type" do
      before do
        create "--foo" => false
      end

      it "accepts --opt assignment" do
        expect(parse("--foo")["foo"]).to eq(true)
        expect(parse("--foo", "--bar")["foo"]).to eq(true)
      end

      it "uses the default value if no switch is given" do
        expect(parse("")["foo"]).to eq(false)
      end

      it "accepts --opt=value assignment" do
        expect(parse("--foo=true")["foo"]).to eq(true)
        expect(parse("--foo=false")["foo"]).to eq(false)
      end

      it "accepts --[no-]opt variant, setting false for value" do
        expect(parse("--no-foo")["foo"]).to eq(false)
      end

      it "accepts --[skip-]opt variant, setting false for value" do
        expect(parse("--skip-foo")["foo"]).to eq(false)
      end

      it "accepts --[skip-]opt variant, setting false for value, even if there's a trailing non-switch" do
        expect(parse("--skip-foo", "asdf")["foo"]).to eq(false)
      end

      it "will prefer 'no-opt' variant over inverting 'opt' if explicitly set" do
        create "--no-foo" => true
        expect(parse("--no-foo")["no-foo"]).to eq(true)
      end

      it "will prefer 'skip-opt' variant over inverting 'opt' if explicitly set" do
        create "--skip-foo" => true
        expect(parse("--skip-foo")["skip-foo"]).to eq(true)
      end

      it "will prefer 'skip-opt' variant over inverting 'opt' if explicitly set, even if there's a trailing non-switch" do
        create "--skip-foo" => true
        expect(parse("--skip-foo", "asdf")["skip-foo"]).to eq(true)
      end

      it "will prefer 'skip-opt' variant over inverting 'opt' if explicitly set, and given a value" do
        create "--skip-foo" => true
        expect(parse("--skip-foo=f")["skip-foo"]).to eq(false)
        expect(parse("--skip-foo=false")["skip-foo"]).to eq(false)
        expect(parse("--skip-foo=t")["skip-foo"]).to eq(true)
        expect(parse("--skip-foo=true")["skip-foo"]).to eq(true)
      end

      it "accepts inputs in the human name format" do
        create foo_bar: :boolean
        expect(parse("--foo-bar")["foo_bar"]).to eq(true)
        expect(parse("--no-foo-bar")["foo_bar"]).to eq(false)
        expect(parse("--skip-foo-bar")["foo_bar"]).to eq(false)
      end

      it "doesn't eat the next part of the param" do
        expect(parse("--foo", "bar")).to eq("foo" => true)
        expect(@opt.remaining).to eq(%w(bar))
      end

      it "doesn't eat the next part of the param with 'no-opt' variant" do
        expect(parse("--no-foo", "bar")).to eq("foo" => false)
        expect(@opt.remaining).to eq(%w(bar))
      end

      it "doesn't eat the next part of the param with 'skip-opt' variant" do
        expect(parse("--skip-foo", "bar")).to eq("foo" => false)
        expect(@opt.remaining).to eq(%w(bar))
      end

      it "allows multiple values if repeatable is specified" do
        create verbose: Thor::Option.new("verbose", type: :boolean, aliases: "-v", repeatable: true)
        expect(parse("-v", "-v", "-v")["verbose"].count).to eq(3)
      end
    end

    describe "with :hash type" do
      before do
        create "--attributes" => :hash
      end

      it "accepts a switch=<value> assignment" do
        expect(parse("--attributes=name:string", "age:integer")["attributes"]).to eq("name" => "string", "age" => "integer")
        expect(parse("--attributes=-name:string", "age:integer", "--gender:string")["attributes"]).to eq("-name" => "string", "age" => "integer")
      end

      it "accepts a switch <value> assignment" do
        expect(parse("--attributes", "name:string", "age:integer")["attributes"]).to eq("name" => "string", "age" => "integer")
      end

      it "must not mix values with other switches" do
        expect(parse("--attributes", "name:string", "age:integer", "--baz", "cool")["attributes"]).to eq("name" => "string", "age" => "integer")
      end

      it "must not allow the same hash key to be specified multiple times" do
        expect { parse("--attributes", "name:string", "name:integer") }.to raise_error(Thor::MalformattedArgumentError, "You can't specify 'name' more than once in option '--attributes'; got name:string and name:integer")
      end

      it "allows multiple values if repeatable is specified" do
        create attributes: Thor::Option.new("attributes", type: :hash, repeatable: true)
        expect(parse("--attributes", "name:one", "foo:1", "--attributes", "name:two", "bar:2")["attributes"]).to eq({"name"=>"two", "foo"=>"1", "bar" => "2"})
      end
    end

    describe "with :array type" do
      before do
        create "--attributes" => :array
      end

      it "accepts a switch=<value> assignment" do
        expect(parse("--attributes=a", "b", "c")["attributes"]).to eq(%w(a b c))
        expect(parse("--attributes=-a", "b", "-c")["attributes"]).to eq(%w(-a b))
      end

      it "accepts a switch <value> assignment" do
        expect(parse("--attributes", "a", "b", "c")["attributes"]).to eq(%w(a b c))
      end

      it "must not mix values with other switches" do
        expect(parse("--attributes", "a", "b", "c", "--baz", "cool")["attributes"]).to eq(%w(a b c))
      end

      it "allows multiple values if repeatable is specified" do
        create attributes: Thor::Option.new("attributes", type: :array, repeatable: true)
        expect(parse("--attributes", "1", "2", "--attributes", "3", "4")["attributes"]).to eq([["1", "2"], ["3", "4"]])
      end

      it "raises error when value isn't in enum" do
        enum = %w(apple banana)
        create fruit: Thor::Option.new("fruits", type: :array, enum: enum)
        expect { parse("--fruits=", "apple", "banana", "strawberry") }.to raise_error(Thor::MalformattedArgumentError,
            "Expected all values of '--fruits' to be one of #{enum.join(', ')}; got strawberry")
      end
    end

    describe "with :numeric type" do
      before do
        create "n" => :numeric, "m" => 5
      end

      it "accepts a -nXY assignment" do
        expect(parse("-n12")["n"]).to eq(12)
      end

      it "converts values to numeric types" do
        expect(parse("-n", "3", "-m", ".5")).to eq("n" => 3, "m" => 0.5)
      end

      it "raises error when value isn't numeric" do
        expect { parse("-n", "foo") }.to raise_error(Thor::MalformattedArgumentError,
                                                     "Expected numeric value for '-n'; got \"foo\"")
      end

      it "raises error when value isn't in Array enum" do
        enum = [1, 2]
        create limit: Thor::Option.new("limit", type: :numeric, enum: enum)
        expect { parse("--limit", "3") }.to raise_error(Thor::MalformattedArgumentError,
                                                        "Expected '--limit' to be one of 1, 2; got 3")
      end

      it "raises error when value isn't in Range enum" do
        enum = 1..2
        create limit: Thor::Option.new("limit", type: :numeric, enum: enum)
        expect { parse("--limit", "3") }.to raise_error(Thor::MalformattedArgumentError,
                                                        "Expected '--limit' to be one of 1..2; got 3")
      end

      it "allows multiple values if repeatable is specified" do
        create run: Thor::Option.new("run", type: :numeric, repeatable: true)
        expect(parse("--run", "1", "--run", "2")["run"]).to eq([1, 2])
      end
    end
  end
end