module Fastlane
  module Actions
    class UploadAppPrivacyDetailsToAppStoreAction < Action
      DEFAULT_PATH = Fastlane::Helper.fastlane_enabled_folder_path
      DEFAULT_FILE_NAME = "app_privacy_details.json"

      def self.run(params)
        require 'spaceship'

        # Prompts select team if multiple teams and none specified
        UI.message("Login to App Store Connect (#{params[:username]})")
        Spaceship::ConnectAPI.login(params[:username], use_portal: false, use_tunes: true, tunes_team_id: params[:team_id], team_name: params[:team_name])
        UI.message("Login successful")

        # Get App
        app = Spaceship::ConnectAPI::App.find(params[:app_identifier])
        unless app
          UI.user_error!("Could not find app with bundle identifier '#{params[:app_identifier]}' on account #{params[:username]}")
        end

        # Attempt to load JSON file
        usages_config = load_json_file(params)

        # Start interactive questions to generate and save JSON file
        unless usages_config
          usages_config = ask_interactive_questions_for_json

          if params[:skip_json_file_saving]
            UI.message("Skipping JSON file saving...")
          else
            json = JSON.pretty_generate(usages_config)
            path = output_path(params)

            UI.message("Writing file to #{path}")
            File.write(path, json)
          end
        end

        # Process JSON file to save app data usages to API
        if params[:skip_upload]
          UI.message("Skipping uploading of data... (so you can verify your JSON file)")
        else
          upload_app_data_usages(params, app, usages_config)
        end
      end

      def self.load_json_file(params)
        path = params[:json_path]
        return nil if path.nil?
        return JSON.parse(File.read(path))
      end

      def self.output_path(params)
        path = params[:output_json_path]
        return File.absolute_path(path)
      end

      def self.ask_interactive_questions_for_json(show_intro = true)
        if show_intro
          UI.important("You did not provide a JSON file for updating the app data usages")
          UI.important("fastlane will now run you through interactive question to generate the JSON file")
          UI.important("")
          UI.important("This JSON file can be saved in source control and used in this action with the :json_file option")

          unless UI.confirm("Ready to start?")
            UI.user_error!("Cancelled")
          end
        end

        # Fetch categories and purposes used for generating interactive questions
        categories = Spaceship::ConnectAPI::AppDataUsageCategory.all(includes: "grouping")
        purposes = Spaceship::ConnectAPI::AppDataUsagePurpose.all

        json = []

        unless UI.confirm("Are you collecting data?")
          json << {
            "data_protections" => [Spaceship::ConnectAPI::AppDataUsageDataProtection::ID::DATA_NOT_COLLECTED]
          }

          return json
        end

        categories.each do |category|
          # Ask if using category
          next unless UI.confirm("Collect data for #{category.id}?")

          purpose_names = purposes.map(&:id).join(', ')
          UI.message("How will this data be used? You'll be offered with #{purpose_names}")

          # Ask purposes
          selected_purposes = []
          loop do
            purposes.each do |purpose|
              selected_purposes << purpose if UI.confirm("Used for #{purpose.id}?")
            end

            break unless selected_purposes.empty?
            break unless UI.confirm("No purposes selected. Do you want to try again?")
          end

          # Skip asking protections if purposes were skipped
          next if selected_purposes.empty?

          # Ask protections
          is_linked_to_user = UI.confirm("Is #{category.id} linked to the user?")
          is_used_for_tracking = UI.confirm("Is #{category.id} used for tracking purposes?")

          # Map answers to values for API requests
          protection_id = is_linked_to_user ? Spaceship::ConnectAPI::AppDataUsageDataProtection::ID::DATA_LINKED_TO_YOU : Spaceship::ConnectAPI::AppDataUsageDataProtection::ID::DATA_NOT_LINKED_TO_YOU
          tracking_id = is_used_for_tracking ? Spaceship::ConnectAPI::AppDataUsageDataProtection::ID::DATA_USED_TO_TRACK_YOU : nil

          json << {
            "category" => category.id,
            "purposes" => selected_purposes.map(&:id).sort.uniq,
            "data_protections" => [
              protection_id, tracking_id
            ].compact.sort.uniq
          }
        end

        json.sort_by! { |c| c["category"] }

        # Recursively call this method if no categories were selected for data collection
        if json.empty?
          UI.error("No categories were selected for data collection.")
          json = ask_interactive_questions_for_json(false)
        end

        return json
      end

      def self.upload_app_data_usages(params, app, usages_config)
        UI.message("Preparing to upload App Data Usage")

        # Delete all existing usages for new ones
        all_usages = Spaceship::ConnectAPI::AppDataUsage.all(app_id: app.id, includes: "category,grouping,purpose,dataProtection", limit: 500)
        all_usages.each(&:delete!)

        usages_config.each do |usage_config|
          category = usage_config["category"]
          purposes = usage_config["purposes"] || []
          data_protections = usage_config["data_protections"] || []

          # There will not be any purposes if "not collecting data"
          # However, an AppDataUsage still needs to be created for not collecting data
          # Creating an array with nil so that purposes can be iterated over and
          # that AppDataUsage can be created
          purposes = [nil] if purposes.empty?

          purposes.each do |purpose|
            data_protections.each do |data_protection|
              if data_protection == Spaceship::ConnectAPI::AppDataUsageDataProtection::ID::DATA_NOT_COLLECTED
                UI.message("Setting #{data_protection}")
              else
                UI.message("Setting #{category} and #{purpose} to #{data_protection}")
              end

              Spaceship::ConnectAPI::AppDataUsage.create(
                app_id: app.id,
                app_data_usage_category_id: category,
                app_data_usage_protection_id: data_protection,
                app_data_usage_purpose_id: purpose
              )
            end
          end
        end

        # Publish
        if params[:skip_publish]
          UI.message("Skipping app data usage publishing... (so you can verify on App Store Connect)")
        else
          publish_state = Spaceship::ConnectAPI::AppDataUsagesPublishState.get(app_id: app.id)
          if publish_state.published
            UI.important("App data usage is already published")
          else
            UI.important("App data usage not published! Going to publish...")
            publish_state.publish!
            UI.important("App data usage is now published")
          end
        end
      end

      def self.description
        "Upload App Privacy Details for an app in App Store Connect"
      end

      def self.available_options
        user = CredentialsManager::AppfileConfig.try_fetch_value(:itunes_connect_id)
        user ||= CredentialsManager::AppfileConfig.try_fetch_value(:apple_id)

        [
          FastlaneCore::ConfigItem.new(key: :username,
                                       env_name: "FASTLANE_USER",
                                       description: "Your Apple ID Username for App Store Connect",
                                       default_value: user,
                                       default_value_dynamic: true),
          FastlaneCore::ConfigItem.new(key: :app_identifier,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_APP_IDENTIFIER",
                                       description: "The bundle identifier of your app",
                                       code_gen_sensitive: true,
                                       default_value: CredentialsManager::AppfileConfig.try_fetch_value(:app_identifier),
                                       default_value_dynamic: true),
          FastlaneCore::ConfigItem.new(key: :team_id,
                                       env_name: "FASTLANE_ITC_TEAM_ID",
                                       description: "The ID of your App Store Connect team if you're in multiple teams",
                                       optional: true,
                                       is_string: false, # as we also allow integers, which we convert to strings anyway
                                       code_gen_sensitive: true,
                                       default_value: CredentialsManager::AppfileConfig.try_fetch_value(:itc_team_id),
                                       default_value_dynamic: true),
          FastlaneCore::ConfigItem.new(key: :team_name,
                                       env_name: "FASTLANE_ITC_TEAM_NAME",
                                       description: "The name of your App Store Connect team if you're in multiple teams",
                                       optional: true,
                                       code_gen_sensitive: true,
                                       default_value: CredentialsManager::AppfileConfig.try_fetch_value(:itc_team_name),
                                       default_value_dynamic: true),

          # JSON paths
          FastlaneCore::ConfigItem.new(key: :json_path,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_JSON_PATH",
                                       description: "Path to the app usage data JSON",
                                       is_string: true,
                                       optional: true,
                                       verify_block: proc do |value|
                                         UI.user_error!("Could not find JSON file at path '#{File.expand_path(value)}'") unless File.exist?(value)
                                         UI.user_error!("'#{value}' doesn't seem to be a JSON file") unless FastlaneCore::Helper.json_file?(File.expand_path(value))
                                       end),
          FastlaneCore::ConfigItem.new(key: :output_json_path,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_OUTPUT_JSON_PATH",
                                       description: "Path to the app usage data JSON file generated by interactive questions",
                                       conflicting_options: [:skip_json_file_saving],
                                       default_value: File.join(DEFAULT_PATH, DEFAULT_FILE_NAME)),

          # Skipping options
          FastlaneCore::ConfigItem.new(key: :skip_json_file_saving,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_OUTPUT_SKIP_JSON_FILE_SAVING",
                                       description: "Whether to skip the saving of the JSON file",
                                       conflicting_options: [:skip_output_json_path],
                                       type: Boolean,
                                       default_value: false),
          FastlaneCore::ConfigItem.new(key: :skip_upload,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_OUTPUT_SKIP_UPLOAD",
                                       description: "Whether to skip the upload and only create the JSON file with interactive questions",
                                       conflicting_options: [:skip_publish],
                                       type: Boolean,
                                       default_value: false),
          FastlaneCore::ConfigItem.new(key: :skip_publish,
                                       env_name: "UPLOAD_APP_PRIVACY_DETAILS_TO_APP_STORE_OUTPUT_SKIP_PUBLISH",
                                       description: "Whether to skip the publishing",
                                       conflicting_options: [:skip_upload],
                                       type: Boolean,
                                       default_value: false)
        ]
      end

      def self.author
        "joshdholtz"
      end

      def self.is_supported?(platform)
        [:ios, :mac, :tvos].include?(platform)
      end

      def self.details
        "Upload App Privacy Details for an app in App Store Connect. For more detail information, view https://docs.fastlane.tools/uploading-app-privacy-details"
      end

      def self.example_code
        [
          'upload_app_privacy_details_to_app_store(
            username: "your@email.com",
            team_name: "Your Team",
            app_identifier: "com.your.bundle"
          )',
          'upload_app_privacy_details_to_app_store(
            username: "your@email.com",
            team_name: "Your Team",
            app_identifier: "com.your.bundle",
            json_path: "fastlane/app_data_usages.json"
          )'
        ]
      end

      def self.category
        :production
      end
    end
  end
end