# frozen_string_literal: true

require "cli/named_args"

RSpec.describe Homebrew::CLI::NamedArgs do
  def setup_unredable_formula(name)
    error = FormulaUnreadableError.new(name, RuntimeError.new("testing"))
    allow(Formulary).to receive(:factory).with(name, any_args).and_raise(error)
  end

  def setup_unredable_cask(name)
    error = Cask::CaskUnreadableError.new(name, "testing")
    allow(Cask::CaskLoader).to receive(:load).with(name, any_args).and_raise(error)

    config = instance_double(Cask::Config)
    allow(Cask::Config).to receive(:from_args).and_return(config)
  end

  let(:foo) do
    formula "foo" do
      url "https://brew.sh"
      version "1.0"
    end
  end

  let(:bar) do
    formula "bar" do
      url "https://brew.sh"
      version "1.0"
    end
  end

  let(:baz) do
    Cask::CaskLoader::FromContentLoader.new(+<<~RUBY, tap: CoreCaskTap.instance).load(config: nil)
      cask "baz" do
        version "1.0"
      end
    RUBY
  end

  let(:foo_cask) do
    Cask::CaskLoader::FromContentLoader.new(+<<~RUBY, tap: CoreCaskTap.instance).load(config: nil)
      cask "foo" do
        version "1.0"
      end
    RUBY
  end

  describe "#to_formulae" do
    it "returns formulae" do
      stub_formula_loader foo, call_original: true
      stub_formula_loader bar

      expect(described_class.new("foo", "bar").to_formulae).to eq [foo, bar]
    end

    it "raises an error when a Formula is unavailable" do
      expect { described_class.new("mxcl").to_formulae }.to raise_error FormulaUnavailableError
    end

    it "returns an empty array when there are no Formulae" do
      expect(described_class.new.to_formulae).to be_empty
    end
  end

  describe "#to_formulae_and_casks" do
    it "returns formulae and casks", :needs_macos do
      stub_formula_loader foo, call_original: true
      stub_cask_loader baz, call_original: true

      expect(described_class.new("foo", "baz").to_formulae_and_casks).to eq [foo, baz]
    end

    context "when both formula and cask are present" do
      before do
        stub_formula_loader foo
        stub_cask_loader foo_cask
      end

      it "returns formula by default" do
        expect(described_class.new("foo").to_formulae_and_casks).to eq [foo]
      end

      it "returns formula if loading formula only" do
        expect(described_class.new("foo").to_formulae_and_casks(only: :formula)).to eq [foo]
      end

      it "returns cask if loading cask only" do
        expect(described_class.new("foo").to_formulae_and_casks(only: :cask)).to eq [foo_cask]
      end
    end

    context "when a non-core formula and a core cask are present" do
      let(:non_core_formula) do
        formula "foo", tap: Tap.fetch("some/tap") do
          url "https://brew.sh"
          version "1.0"
        end
      end

      before do
        stub_formula_loader non_core_formula, "foo"
        stub_cask_loader foo_cask
      end

      it "returns the cask by default" do
        expect(described_class.new("foo").to_formulae_and_casks).to eq [foo_cask]
      end

      it "returns formula if loading formula only" do
        expect(described_class.new("foo").to_formulae_and_casks(only: :formula)).to eq [non_core_formula]
      end

      it "returns cask if loading cask only" do
        expect(described_class.new("foo").to_formulae_and_casks(only: :cask)).to eq [foo_cask]
      end
    end

    context "when both formula and cask are unreadable" do
      before do
        setup_unredable_formula "foo"
        setup_unredable_cask "foo"
      end

      it "raises an error" do
        expect { described_class.new("foo").to_formulae_and_casks }.to raise_error(FormulaUnreadableError)
      end

      it "raises an error if loading formula only" do
        expect { described_class.new("foo").to_formulae_and_casks(only: :formula) }
          .to raise_error(FormulaUnreadableError)
      end

      it "raises an error if loading cask only" do
        expect { described_class.new("foo").to_formulae_and_casks(only: :cask) }
          .to raise_error(Cask::CaskUnreadableError)
      end
    end

    it "raises an error when neither formula nor cask is present" do
      expect { described_class.new("foo").to_formulae_and_casks }.to raise_error(FormulaOrCaskUnavailableError)
    end

    it "returns formula when formula is present and cask is unreadable", :needs_macos do
      stub_formula_loader foo
      setup_unredable_cask "foo"

      expect(described_class.new("foo").to_formulae_and_casks).to eq [foo]
      expect { described_class.new("foo").to_formulae_and_casks }.to output(/Failed to load cask: foo/).to_stderr
    end

    it "returns cask when formula is unreadable and cask is present", :needs_macos do
      setup_unredable_formula "foo"
      stub_cask_loader foo_cask

      expect(described_class.new("foo").to_formulae_and_casks).to eq [foo_cask]
      expect { described_class.new("foo").to_formulae_and_casks }.to output(/Failed to load formula: foo/).to_stderr
    end

    it "raises an error when formula is absent and cask is unreadable", :needs_macos do
      setup_unredable_cask "foo"

      expect { described_class.new("foo").to_formulae_and_casks }.to raise_error(Cask::CaskUnreadableError)
    end

    it "raises an error when formula is unreadable and cask is absent" do
      setup_unredable_formula "foo"

      expect { described_class.new("foo").to_formulae_and_casks }.to raise_error(FormulaUnreadableError)
    end
  end

  describe "#to_resolved_formulae" do
    it "returns resolved formulae" do
      allow(Formulary).to receive(:resolve).and_return(foo, bar)

      expect(described_class.new("foo", "bar").to_resolved_formulae).to eq [foo, bar]
    end
  end

  describe "#to_resolved_formulae_to_casks" do
    it "returns resolved formulae, as well as casks", :needs_macos do
      allow(Formulary).to receive(:resolve).and_call_original
      allow(Formulary).to receive(:resolve).with("foo", any_args).and_return foo
      stub_cask_loader baz, call_original: true

      resolved_formulae, casks = described_class.new("foo", "baz").to_resolved_formulae_to_casks

      expect(resolved_formulae).to eq [foo]
      expect(casks).to eq [baz]
    end
  end

  describe "#to_casks" do
    it "returns casks" do
      stub_cask_loader baz

      expect(described_class.new("baz").to_casks).to eq [baz]
    end
  end

  describe "#to_kegs" do
    before do
      (HOMEBREW_CELLAR/"foo/1.0").mkpath
      (HOMEBREW_CELLAR/"foo/2.0").mkpath
      (HOMEBREW_CELLAR/"bar/1.0").mkpath
    end

    it "resolves kegs with #resolve_kegs" do
      expect(described_class.new("foo", "bar").to_kegs.map(&:name)).to eq ["foo", "foo", "bar"]
    end

    it "resolves kegs with multiple versions with #resolve_keg" do
      expect(described_class.new("foo").to_kegs.map { |k| k.version.version.to_s }.sort).to eq ["1.0", "2.0"]
    end

    it "when there are no matching kegs returns an empty array" do
      expect(described_class.new.to_kegs).to be_empty
    end

    it "raises an error when a Keg is unavailable" do
      expect { described_class.new("baz").to_kegs }.to raise_error NoSuchKegError
    end

    context "when a keg specifies a tap" do
      let(:tab) { instance_double(Tab, tap: Tap.fetch("user", "repo")) }

      before do
        allow_any_instance_of(Keg).to receive(:tab).and_return(tab)
      end

      it "returns kegs if no tap is specified" do
        stub_formula_loader bar, "user/repo/bar"

        expect(described_class.new("bar").to_kegs.map(&:name)).to eq ["bar"]
      end

      it "returns kegs if the tap is specified" do
        stub_formula_loader bar, "user/repo/bar"

        expect(described_class.new("user/repo/bar").to_kegs.map(&:name)).to eq ["bar"]
      end

      it "raises an error if there is no tap match" do
        stub_formula_loader bar, "other/tap/bar"

        expect { described_class.new("other/tap/bar").to_kegs }.to raise_error(NoSuchKegError, %r{from tap other/tap})
      end
    end
  end

  describe "#to_default_kegs" do
    before do
      (HOMEBREW_CELLAR/"foo/1.0").mkpath
      (HOMEBREW_CELLAR/"bar/1.0").mkpath
      linked_path = (HOMEBREW_CELLAR/"foo/2.0")
      linked_path.mkpath
      Keg.new(linked_path).link
    end

    it "resolves kegs with #resolve_default_keg" do
      expect(described_class.new("foo", "bar").to_default_kegs.map(&:name)).to eq ["foo", "bar"]
    end

    it "resolves the default keg" do
      expect(described_class.new("foo").to_default_kegs.map { |k| k.version.version.to_s }).to eq ["2.0"]
    end

    it "when there are no matching kegs returns an empty array" do
      expect(described_class.new.to_default_kegs).to be_empty
    end
  end

  describe "#to_latest_kegs" do
    before do
      (HOMEBREW_CELLAR/"foo/1.0").mkpath
      (HOMEBREW_CELLAR/"foo/2.0").mkpath
      (HOMEBREW_CELLAR/"bar/1.0").mkpath
      (HOMEBREW_CELLAR/"baz/HEAD-1").mkpath
      head2 = HOMEBREW_CELLAR/"baz/HEAD-2"
      head2.mkpath
      (head2/"INSTALL_RECEIPT.json").write (TEST_FIXTURE_DIR/"receipt.json").read
    end

    it "resolves the latest kegs with #resolve_latest_keg" do
      latest_kegs = described_class.new("foo", "bar", "baz").to_latest_kegs
      expect(latest_kegs.map(&:name)).to eq ["foo", "bar", "baz"]
      expect(latest_kegs.map { |k| k.version.version.to_s }).to eq ["2.0", "1.0", "HEAD-2"]
    end

    it "when there are no matching kegs returns an empty array" do
      expect(described_class.new.to_latest_kegs).to be_empty
    end
  end

  describe "#to_kegs_to_casks" do
    before do
      (HOMEBREW_CELLAR/"foo/1.0").mkpath
    end

    it "returns kegs, as well as casks", :needs_macos do
      stub_cask_loader baz, call_original: true

      kegs, casks = described_class.new("foo", "baz").to_kegs_to_casks

      expect(kegs.map(&:name)).to eq ["foo"]
      expect(casks).to eq [baz]
    end
  end

  describe "#homebrew_tap_cask_names" do
    it "returns an array of casks from homebrew-cask" do
      expect(described_class.new("foo", "homebrew/cask/local-caffeine").homebrew_tap_cask_names)
        .to eq ["homebrew/cask/local-caffeine"]
    end

    it "returns an empty array when there are no matching casks" do
      expect(described_class.new("foo").homebrew_tap_cask_names).to be_empty
    end
  end

  describe "#to_paths" do
    let(:existing_path) { mktmpdir }
    let(:formula_path) { Pathname("/path/to/foo.rb") }
    let(:cask_path) { Pathname("/path/to/baz.rb") }

    before do
      allow(formula_path).to receive(:exist?).and_return(true)
      allow(cask_path).to receive(:exist?).and_return(true)

      allow(Formulary).to receive(:path).and_call_original
      allow(Cask::CaskLoader).to receive(:path).and_call_original
    end

    it "returns taps, cask formula and existing paths", :needs_macos do
      expect(Formulary).to receive(:path).with("foo").and_return(formula_path)
      expect(Cask::CaskLoader).to receive(:path).with("baz").and_return(cask_path)

      expect(described_class.new("homebrew/core", "foo", "baz", existing_path.to_s).to_paths)
        .to eq [Tap.fetch("homebrew/core").path, formula_path, cask_path, existing_path]
    end

    it "returns both cask and formula paths if they exist", :needs_macos do
      expect(Formulary).to receive(:path).with("foo").and_return(formula_path)
      expect(Cask::CaskLoader).to receive(:path).with("baz").and_return(cask_path)

      expect(described_class.new("foo", "baz").to_paths).to eq [formula_path, cask_path]
    end

    it "returns only formulae when `only: :formula` is specified" do
      expect(Formulary).to receive(:path).with("foo").and_return(formula_path)

      expect(described_class.new("foo", "baz").to_paths(only: :formula)).to eq [formula_path, Formulary.path("baz")]
    end

    it "returns only casks when `only: :cask` is specified" do
      expect(Cask::CaskLoader).to receive(:path).with("foo").and_return(cask_path)

      expect(described_class.new("foo", "baz").to_paths(only: :cask)).to eq [cask_path, Cask::CaskLoader.path("baz")]
    end
  end

  describe "#to_taps" do
    it "returns taps" do
      taps = described_class.new("homebrew/foo", "bar/baz")
      expect(taps.to_taps.map(&:name)).to eq %w[homebrew/foo bar/baz]
    end

    it "raises an error for invalid tap" do
      taps = described_class.new("homebrew/foo", "barbaz")
      expect { taps.to_taps }.to raise_error(Tap::InvalidNameError, /Invalid tap name/)
    end
  end

  describe "#to_installed_taps" do
    before do
      (HOMEBREW_REPOSITORY/"Library/Taps/homebrew/homebrew-foo").mkpath
    end

    it "returns installed taps" do
      taps = described_class.new("homebrew/foo")
      expect(taps.to_installed_taps.map(&:name)).to eq %w[homebrew/foo]
    end

    it "raises an error for uninstalled tap" do
      taps = described_class.new("homebrew/foo", "bar/baz")
      expect { taps.to_installed_taps }.to raise_error(TapUnavailableError)
    end

    it "raises an error for invalid tap" do
      taps = described_class.new("homebrew/foo", "barbaz")
      expect { taps.to_installed_taps }.to raise_error(Tap::InvalidNameError, /Invalid tap name/)
    end
  end
end