module Aigu
  class CLI
    COMMANDS = {
      'rails-import' => 'RailsImporter',
      'rails-export' => 'RailsExporter',
      'android-import' => 'AndroidImporter',
      'android-export' => 'AndroidExporter',
      'core-import' => 'CoreImporter',
      'core-export' => 'CoreExporter',
      'ios-import' => 'IOSImporter',
      'ios-export' => 'IOSExporter',
      'ember-import' => 'EmberImporter',
      'ember-export' => 'EmberExporter',
      'ember-pod-import' => 'EmberPodImporter',
      'ember-pod-export' => 'EmberPodExporter'
    }.freeze

    def initialize(env, argv)
      @env = env
      @command = argv.first =~ /^[^-]/ ? argv.shift : nil
      @command = @command.tr('_', '-') if @command
      @argv = argv
      @options = {}
      @options = parse_options_from_yaml(@options)
      @options = parse_options_from_arguments(@options)
    end

    def run
      if COMMANDS[@command]
        service_class = Aigu.const_get(COMMANDS[@command])
      else
        puts "The #{@command} command doesn’t exist. Nice try."
        exit 0
      end

      service_object = service_class.new(@options)
      service_object.process!
    end

  protected

    def parse_options_from_yaml(options)
      file = File.join(Dir.pwd, '.aigu.yml')

      if File.exist?(file)
        # Load YAML content
        content = YAML.load_file(file)

        # Symbolize keys and merge with existing options
        options = options.merge(content.symbolize_keys)
      end

      options
    end

    # rubocop:disable Metrics/MethodLength
    def parse_options_from_arguments(options)
      OptionParser.new do |opts|
        opts.banner = <<DOC
"Usage: aigu <command> [options]"

Commands:
#{COMMANDS.keys.map { |command| "        #{command}" }.join("\n")}

Options:
DOC

        opts.on('--input-directory=', 'The directory in which the Rails YAML localization files are stored') do |directory|
          options[:'input-directory'] = directory
        end

        opts.on('--output-directory=', 'The directory in which the Rails YAML localization files will be generated') do |directory|
          options[:'output-directory'] = directory
        end

        opts.on('--input-file=', 'The JSON file generated by Accent') do |file|
          options[:'input-file'] = file
        end

        opts.on('--output-file=', 'The JSON file that will be generated for Accent') do |file|
          options[:'output-file'] = file
        end

        opts.on('--locale=', 'The locale to use. Importers and exporters may need it to process files') do |locale|
          options[:locale] = locale
        end

        opts.on('--ignore=', 'Patterns to ignore, separated by commas') do |ignore|
          options[:ignore] = ignore.split(',')
        end

        opts.on_tail('-v', '--version', 'Output Aigu’s version') do
          puts "aigu-v#{Aigu::VERSION}"
          exit
        end

        opts.on_tail('-h', '--help', 'Show this message') do
          puts opts
          exit
        end
      end.parse! @argv

      options
    end
    # rubocop:enable Metrics/MethodLength
  end
end