require "stringio"

module Omnibus
  describe Packager::Base do
    let(:project) do
      Project.new.tap do |project|
        project.name("project")
        project.install_dir(File.join(tmp_path, "opt/project"))
        project.homepage("https://example.com")
        project.build_version("1.2.3")
        project.build_iteration("2")
        project.maintainer("Chef Software")
      end
    end

    before do
      # Force the Dir.mktmpdir call on staging_dir
      allow(Dir).to receive(:mktmpdir).and_return(File.join(tmp_path, "tmp/dir"))

      Config.package_dir(tmp_path)
    end

    subject { described_class.new(project) }

    it "includes Cleanroom" do
      expect(subject).to be_a(Cleanroom)
    end

    it "includes Digestable" do
      expect(subject).to be_a(Digestable)
    end

    it "includes Logging" do
      expect(subject).to be_a(Logging)
    end

    it "includes NullArgumentable" do
      expect(subject).to be_a(NullArgumentable)
    end

    it "includes Templating" do
      expect(subject).to be_a(Templating)
    end

    it "includes Util" do
      expect(subject).to be_a(Util)
    end

    describe ".id" do
      it "defines the id method on the instance" do
        described_class.id(:base)
        expect(subject.id).to eq(:base)
      end
    end

    describe ".setup" do
      it "sets the value of the block" do
        block = proc {}
        described_class.setup(&block)

        expect(described_class.setup).to eq(block)
      end
    end

    describe ".build" do
      it "sets the value of the block" do
        block = proc {}
        described_class.build(&block)

        expect(described_class.build).to eq(block)
      end
    end

    describe "#install_dir" do
      it "is a DSL method" do
        expect(subject).to have_exposed_method(:install_dir)
      end

      it "returns the project instances install_dir" do
        expect(subject.install_dir).to eq(project.install_dir)
      end
    end

    describe "#windows_safe_path" do
      it "is a DSL method" do
        expect(subject).to have_exposed_method(:windows_safe_path)
      end
    end

    describe "#skip_packager" do
      it "is a DSL method" do
        expect(subject).to have_exposed_method(:skip_packager)
      end

      it "requires the value to be a TrueClass or a FalseClass" do
        expect do
          subject.skip_packager(Object.new)
        end.to raise_error(InvalidValue)
      end

      it "returns the given value" do
        subject.skip_packager(true)
        expect(subject.skip_packager).to be_truthy
      end
    end

    describe "#run!" do
      before do
        allow(subject).to receive(:remove_directory)
        allow(Metadata).to receive(:generate)

        allow(described_class).to receive(:setup).and_return(proc {})
        allow(described_class).to receive(:build).and_return(proc {})

        allow(subject).to receive(:package_name).and_return("foo")
      end

      it "calls the methods in order" do
        expect(described_class).to receive(:setup).ordered
        expect(described_class).to receive(:build).ordered
        subject.run!
      end
    end

    describe "#staging_dir" do
      it "creates a temporary directory" do
        expect(Dir).to receive(:mktmpdir)
        subject.send(:staging_dir)
      end
    end

    describe "#resource_path" do
      let(:id) { :base }
      before { allow(subject).to receive(:id).and_return(id) }

      context "when a local resource exists" do
        let(:resources_path) { File.join(tmp_path, "/resources/path") }

        before do
          project.resources_path(resources_path)

          allow(File).to receive(:exist?)
            .with(/#{resources_path}/)
            .and_return(true)
        end

        it "returns the local path" do
          expect(subject.resource_path("foo/bar.erb")).to eq("#{resources_path}/#{id}/foo/bar.erb")
        end

        it "returns the path with the id" do
          expect(subject.resources_path).to eq("#{resources_path}/#{id}")
        end
      end

      context "when a local resource does not exist" do
        it "returns the remote path" do
          expect(subject.resource_path("foo/bar.erb")).to eq("#{Omnibus.source_root.join("resources/#{id}/foo/bar.erb")}")
        end
      end
    end
  end
end