# frozen_string_literal: true

require_relative "test_helper"

module SassC
  class CustomImporterTest < MiniTest::Test
    include TempFileTest

    class CustomImporter < Importer
      def imports(path, parent_path)
        if path =~ /styles/
          [
            Import.new("#{path}1.scss", source: "$var1: #000;"),
            Import.new("#{path}2.scss")
          ]
        else
          Import.new(path)
        end
      end
    end

    class NoFilesImporter < Importer
      def imports(path, parent_path)
        []
      end
    end

    class OptionsImporter < Importer
      def imports(path, parent_path)
        Import.new("name.scss", source: options[:custom_option_source])
      end
    end

    class ParentImporter < Importer
      def imports(path, parent_path)
        Import.new("name.scss", source: ".#{parent_path} { color: red; }")
      end
    end

    def test_custom_importer_works
      temp_file("styles2.scss", ".hi { color: $var1; }")
      temp_file("fonts.scss", ".font { color: $var1; }")

      data = <<SCSS
@import "styles";
@import "fonts";
SCSS

      engine = Engine.new(data, {
        importer: CustomImporter
      })

      assert_equal <<CSS, engine.render
.hi {
  color: #000; }

.font {
  color: #000; }
CSS
    end

    def test_dependency_list
      base = temp_dir("").to_s

      temp_dir("fonts")
      temp_dir("fonts/sub")
      temp_file("fonts/sub/sub_fonts.scss", "$font: arial;")
      temp_file("styles2.scss", ".hi { color: $var1; }")
      temp_file "fonts/fonts.scss", <<SCSS
@import "sub/sub_fonts";
.font { font-familiy: $font; color: $var1; }
SCSS

      data = <<SCSS
@import "styles";
@import "fonts";
SCSS

      engine = Engine.new(data, {
        importer: CustomImporter,
        load_paths: ["fonts"]
      })
      engine.render

      dependencies = engine.dependencies.map(&:filename).map { |f| f.gsub(base, "") }

      assert_equal [
        "/fonts/sub/sub_fonts.scss",
        "/styles2.scss",
        "fonts/fonts.scss",
        "styles1.scss"
      ], dependencies
    end

    def test_custom_importer_works_with_no_files
      engine = Engine.new("@import 'fake.scss';", {
        importer: NoFilesImporter
      })

      assert_equal "", engine.render
    end

    def test_custom_importer_can_access_sassc_options
      engine = Engine.new("@import 'fake.scss';", {
        importer: OptionsImporter,
        custom_option_source: ".test { width: 30px; }"
      })

      assert_equal <<CSS, engine.render
.test {
  width: 30px; }
CSS
    end

    def test_parent_path_is_accessible
      engine = Engine.new("@import 'parent.scss';", {
        importer: ParentImporter,
        filename: "import-parent-filename.scss"
      })

      assert_equal <<CSS, engine.render
.import-parent-filename.scss {
  color: red; }
CSS
    end
  end
end