module Deliver
  # upload description, rating, etc.
  class UploadMetadata
    # All the localised values attached to the version
    LOCALISED_VERSION_VALUES = [:description, :keywords, :release_notes, :support_url, :marketing_url]

    # Everything attached to the version but not being localised
    NON_LOCALISED_VERSION_VALUES = [:copyright]

    # Localised app details values
    LOCALISED_APP_VALUES = [:name, :privacy_url]

    # Non localized app details values
    NON_LOCALISED_APP_VALUES = [:primary_category, :secondary_category,
                                :primary_first_sub_category, :primary_second_sub_category,
                                :secondary_first_sub_category, :secondary_second_sub_category]

    # Localized app details values, that are editable in live state
    LOCALISED_LIVE_VALUES = [:description, :release_notes, :support_url, :marketing_url]

    # Non localized app details values, that are editable in live state
    NON_LOCALISED_LIVE_VALUES = [:privacy_url]

    # Make sure to call `load_from_filesystem` before calling upload
    def upload(options)
      return if options[:skip_metadata]
      # it is not possible to create new languages, because
      # :keywords is not write-able on published versions
      # therefore skip it.
      verify_available_languages!(options) unless options[:edit_live]

      app = options[:app]

      details = app.details
      if options[:edit_live]
        # not all values are editable when using live_version
        v = app.live_version(platform: options[:platform])
        localised_options = LOCALISED_LIVE_VALUES
        non_localised_options = NON_LOCALISED_LIVE_VALUES

        if v.nil?
          UI.message("Couldn't find live version, editing the current version on iTunes Connect instead")
          v = app.edit_version(platform: options[:platform])
          # we don't want to update the localised_options and non_localised_options
          # as we also check for `options[:edit_live]` at other areas in the code
          # by not touching those 2 variables, deliver is more consistent with what the option says
          # in the documentation
        end
      else
        v = app.edit_version(platform: options[:platform])
        localised_options = (LOCALISED_VERSION_VALUES + LOCALISED_APP_VALUES)
        non_localised_options = (NON_LOCALISED_VERSION_VALUES + NON_LOCALISED_APP_VALUES)
      end

      localised_options.each do |key|
        current = options[key]
        next unless current

        unless current.kind_of?(Hash)
          UI.error("Error with provided '#{key}'. Must be a hash, the key being the language.")
          next
        end

        current.each do |language, value|
          next unless value.to_s.length > 0
          strip_value = value.to_s.strip
          v.send(key)[language] = strip_value if LOCALISED_VERSION_VALUES.include?(key)
          details.send(key)[language] = strip_value if LOCALISED_APP_VALUES.include?(key)
        end
      end

      non_localised_options.each do |key|
        current = options[key].to_s.strip
        next unless current.to_s.length > 0
        v.send("#{key}=", current) if NON_LOCALISED_VERSION_VALUES.include?(key)
        details.send("#{key}=", current) if NON_LOCALISED_APP_VALUES.include?(key)
      end

      v.release_on_approval = options[:automatic_release]

      set_review_information(v, options)
      set_app_rating(v, options)

      UI.message("Uploading metadata to iTunes Connect")
      v.save!
      details.save!
      UI.success("Successfully uploaded set of metadata to iTunes Connect")
    end

    # If the user is using the 'default' language, then assign values where they are needed
    def assign_defaults(options)
      # Build a complete list of the required languages
      enabled_languages = []

      # Get all languages used in existing settings
      (LOCALISED_VERSION_VALUES + LOCALISED_APP_VALUES).each do |key|
        current = options[key]
        next unless current && current.kind_of?(Hash)
        current.each do |language, value|
          enabled_languages << language unless enabled_languages.include?(language)
        end
      end

      # Check folder list (an empty folder signifies a language is required)
      Dir.glob(File.join(options[:metadata_path], "*")).each do |lng_folder|
        next unless File.directory?(lng_folder) # We don't want to read txt as they are non localised

        language = File.basename(lng_folder)
        enabled_languages << language unless enabled_languages.include?(language)
      end

      return unless enabled_languages.include?("default")
      UI.message("Detected languages: " + enabled_languages.to_s)

      (LOCALISED_VERSION_VALUES + LOCALISED_APP_VALUES).each do |key|
        current = options[key]
        next unless current && current.kind_of?(Hash)

        default = current["default"]
        next if default.nil?

        enabled_languages.each do |language|
          value = current[language]
          next unless value.nil?

          current[language] = default
        end
        current.delete("default")
      end
    end

    # Makes sure all languages we need are actually created
    def verify_available_languages!(options)
      return if options[:skip_metadata]

      # Collect all languages we need
      # We only care about languages from user provided values
      # as the other languages are on iTC already anyway
      v = options[:app].edit_version
      UI.user_error!("Could not find a version to edit for app '#{options[:app].name}', the app metadata is read-only currently") unless v

      enabled_languages = []
      LOCALISED_VERSION_VALUES.each do |key|
        current = options[key]
        next unless current && current.kind_of?(Hash)
        current.each do |language, value|
          enabled_languages << language unless enabled_languages.include?(language)
        end
      end

      if enabled_languages.count > 0
        v.create_languages(enabled_languages)
        lng_text = "language"
        lng_text += "s" if enabled_languages.count != 1
        UI.message("Activating #{lng_text} #{enabled_languages.join(', ')}...")
        v.save!
      end
      true
    end

    # Loads the metadata files and stores them into the options object
    def load_from_filesystem(options)
      return if options[:skip_metadata]

      # Load localised data
      Loader.language_folders(options[:metadata_path]).each do |lng_folder|
        language = File.basename(lng_folder)
        (LOCALISED_VERSION_VALUES + LOCALISED_APP_VALUES).each do |key|
          path = File.join(lng_folder, "#{key}.txt")
          next unless File.exist?(path)

          UI.message("Loading '#{path}'...")
          options[key] ||= {}
          options[key][language] ||= File.read(path)
        end
      end

      # Load non localised data
      (NON_LOCALISED_VERSION_VALUES + NON_LOCALISED_APP_VALUES).each do |key|
        path = File.join(options[:metadata_path], "#{key}.txt")
        next unless File.exist?(path)

        UI.message("Loading '#{path}'...")
        options[key] ||= File.read(path)
      end
    end

    private

    def set_review_information(v, options)
      return unless options[:app_review_information]
      info = options[:app_review_information]
      UI.user_error!("`app_review_information` must be a hash", show_github_issues: true) unless info.kind_of?(Hash)

      v.review_first_name = info[:first_name] if info[:first_name]
      v.review_last_name = info[:last_name] if info[:last_name]
      v.review_phone_number = info[:phone_number] if info[:phone_number]
      v.review_email = info[:email_address] if info[:email_address]
      v.review_demo_user = info[:demo_user] if info[:demo_user]
      v.review_demo_password = info[:demo_password] if info[:demo_password]
      v.review_user_needed = (v.review_demo_user.to_s + v.review_demo_password.to_s).length > 0
      v.review_notes = info[:notes] if info[:notes]
    end

    def set_app_rating(v, options)
      return unless options[:app_rating_config_path]

      require 'json'
      begin
        json = JSON.parse(File.read(options[:app_rating_config_path]))
      rescue => ex
        UI.error(ex.to_s)
        UI.user_error!("Error parsing JSON file at path '#{options[:app_rating_config_path]}'")
      end
      v.update_rating(json)
    end
  end
end
