module Nixenvironment
  class BuildEnvVarsLoader
    def self.save_last_build_vars(config_settings)
      executable_name               = config_settings[EXECUTABLE_NAME_KEY]
      watchkit_app_executable       = executable_name + WATCHKIT_APP_SUFFIX_WITH_EXT
      watchkit_extension_executable = executable_name + WATCHKIT_EXTENSION_SUFFIX_WITH_EXT
      widget_executable             = executable_name + WIDGET_SUFFIX_WITH_EXT

      app_product                         = File.join(config_settings[BUILT_PRODUCTS_DIR_KEY], executable_name) + APP_EXT
      watchkit_extension_relative_product = config_settings[RESIGNED_WATCHKIT_EXTENSION_BUNDLE_ID_KEY].nil? ? nil : File.join(IOS_PLUGINS_FOLDER_NAME, watchkit_extension_executable)
      watchkit_app_relative_product       = config_settings[RESIGNED_WATCHKIT_APP_BUNDLE_ID_KEY].nil? ? nil : File.join(watchkit_extension_relative_product, watchkit_app_executable)
      widget_relative_product             = config_settings[RESIGNED_WIDGET_BUNDLE_ID_KEY].nil? ? nil : File.join(IOS_PLUGINS_FOLDER_NAME, widget_executable)

      resigned_watchkit_extension_entitlements_path = config_settings[RESIGNED_WATCHKIT_EXTENSION_ENTITLEMENTS_PATH_KEY].nil? ? nil : @config_settings[RESIGNED_WATCHKIT_EXTENSION_ENTITLEMENTS_PATH_KEY]
      resigned_widget_entitlements_path             = config_settings[RESIGNED_WIDGET_ENTITLEMENTS_PATH_KEY].nil? ? nil : @config_settings[RESIGNED_WIDGET_ENTITLEMENTS_PATH_KEY]

      embedded_profile = File.join(app_product, config_settings[EMBEDDED_PROFILE_NAME_KEY])

      system("
echo \"#!/bin/sh\
#{AUTOGENERATED_FILES_HEADER}
            PROJECT='#{config_settings[PROJECT_KEY]}'
BUILT_PRODUCTS_DIR='#{config_settings[BUILT_PRODUCTS_DIR_KEY]}'
OBJECTS_NORMAL_DIR='#{config_settings[OBJECT_FILE_DIR_NORMAL_KEY]}'
    EXECUTABLE_NAME='#{config_settings[EXECUTABLE_NAME_KEY]}'
        APP_PRODUCT='#{app_product}'
WATCHKIT_APP_RELATIVE_PRODUCT='#{watchkit_app_relative_product}'
WATCHKIT_EXTENSION_RELATIVE_PRODUCT='#{watchkit_extension_relative_product}'
WIDGET_RELATIVE_PRODUCT='#{widget_relative_product}'
           APP_DSYM='#{app_product + DSYM_EXT}'
   EMBEDDED_PROFILE='#{embedded_profile}'
        TARGET_NAME='#{config_settings[TARGET_NAME_KEY]}'
      CONFIGURATION='#{config_settings[CONFIGURATION_KEY]}'
           SDK_NAME='#{config_settings[SDK_NAME_KEY]}'
RESIGNED_BUNDLE_ID='#{config_settings[RESIGNED_BUNDLE_ID_KEY]}'
RESIGNED_WATCHKIT_APP_BUNDLE_ID='#{config_settings[RESIGNED_WATCHKIT_APP_BUNDLE_ID_KEY]}'
RESIGNED_WATCHKIT_EXTENSION_BUNDLE_ID='#{config_settings[RESIGNED_WATCHKIT_EXTENSION_BUNDLE_ID_KEY]}'
RESIGNED_WIDGET_BUNDLE_ID='#{config_settings[RESIGNED_WIDGET_BUNDLE_ID_KEY]}'
RESIGNED_BUNDLE_NAME='#{config_settings[RESIGNED_BUNDLE_NAME_KEY]}'
RESIGNED_ENTITLEMENTS_PATH='#{config_settings[RESIGNED_ENTITLEMENTS_PATH_KEY]}'
RESIGNED_WATCHKIT_EXTENSION_ENTITLEMENTS_PATH='#{resigned_watchkit_extension_entitlements_path}'
RESIGNED_WIDGET_ENTITLEMENTS_PATH='#{resigned_widget_entitlements_path}'\" > #{AUTOGENERATED_LAST_BUILD_VARS}
             ")
    end

    def self.save_last_revision(revision, monotonic_revision, working_copy_is_clean)
      system("
echo \"#!/bin/sh\
#{AUTOGENERATED_FILES_HEADER}
REVISION='#{revision}'
MONOTONIC_REVISION='#{monotonic_revision}'
WORKING_COPY_IS_CLEAN='#{working_copy_is_clean}'\" > #{AUTOGENERATED_LAST_REVISION}
             ")
    end

    def self.load
      build_env_vars = load_last_revision.merge(load_last_build_vars)
      app_product_path   = build_env_vars[APP_PRODUCT_KEY]
      embedded_profile   = build_env_vars['EMBEDDED_PROFILE']
      monotonic_revision = build_env_vars['MONOTONIC_REVISION']
      sdk                = build_env_vars[SDK_NAME_KEY]

      info_plist_relative_path = nil

      if sdk.include?('iphoneos')
        embedded_profile_exist   = embedded_profile.present? && File.exist?(embedded_profile)
        embedded_profile_name    = embedded_profile_exist ? %x[ /usr/libexec/PlistBuddy -c 'Print :Name' /dev/stdin <<< $(security cms -D -i '#{embedded_profile}') ].strip : 'SIMULATOR'
        info_plist_relative_path = 'Info.plist'
      elsif sdk.include?('macos')
        info_plist_relative_path = 'Contents/Info.plist'
      end

      info_plist_path = File.join(app_product_path, info_plist_relative_path)
      info_plist = Plist.from_file(info_plist_path)
      current_app_version = info_plist['CFBundleShortVersionString']

      build_env_vars[EMBEDDED_PROFILE_NAME_KEY] = embedded_profile_name
      build_env_vars[CURRENT_APP_VERSION_KEY]   = current_app_version
      build_env_vars[CURRENT_BUILD_VERSION_KEY] = monotonic_revision

      puts
      puts "#{EMBEDDED_PROFILE_NAME_KEY} = #{embedded_profile_name}" # TODO: find out why it's blank!!!
      puts "#{CURRENT_APP_VERSION_KEY} = #{current_app_version}"
      puts "#{CURRENT_BUILD_VERSION_KEY} = #{monotonic_revision}"
      puts

      build_env_vars
    end

    def self.load_last_revision
      load_internal(AUTOGENERATED_LAST_REVISION, false)
    end

    def self.load_last_build_vars
      load_internal(AUTOGENERATED_LAST_BUILD_VARS, false)
    end

    def self.working_copy_is_clean?
      working_copy_is_clean = load_last_revision['WORKING_COPY_IS_CLEAN'] == '1'

      if working_copy_is_clean
        puts 'Working copy is clean. Continuing ...'
      else
        puts 'error: working copy must not have local modifications.'
        puts 'You must add following files and folders to .gitignore:'
        Git.status(:porcelain => true)
      end

      working_copy_is_clean
    end

    def self.load_internal(file, print_log = true)
      raise "error: file '#{file}' must exist!" unless File.exist?(file)

      build_env_vars = {}

      vars_list = File.read(file).lines.reject(&:empty?)
      if vars_list.present?
        puts if print_log

        vars_to_strip = Hash[vars_list.map { |it| it.split('=', 2) }]
        vars_to_strip.each do |key, value|
          if key.present? && !key.include?(AUTOGENERATED_FILES_HEADER)
            stripped_key   = key.strip
            stripped_value = value ? value.tr("'", '').strip : 'unknown'
            puts "#{stripped_key} = #{stripped_value}" if print_log
            build_env_vars[stripped_key] = stripped_value
          end
        end

        puts if print_log
      end

      build_env_vars
    end

    private_class_method :load_internal
  end
end