# frozen_string_literal: true

require 'xcodeproj'
require 'active_support/core_ext/string/inflections'

module GoNative
  module Plugins
    module IOS
      class Create
        autoload :FileUtils, 'fileutils'
        
        extend DSL::Serviceable

        TEMPLATE_DIRECTORY_PATH = File.expand_path(File.join(__dir__, '../../../..', 'templates', 'plugins', 'ios'))
        COMMON_TEMPLATES_PATH = File.join(TEMPLATE_DIRECTORY_PATH, 'common')
        
        LANGUAGES = %w[objc swift].freeze
        
        attr_reader :plugin_name, :language
        
        def initialize(plugin_name, language)
          @plugin_name = plugin_name
          @language = language
        end
        
        def call
          assert_not_exists!
          set_working_dir!
          cp_template_files!
          inflate_templates!
          chmod_frameworks_script!
          create_framework_proj!
          run_pod_install!
        end

        def assert_not_exists!
          return unless File.directory?(plugin_name)
          
          raise Error, "Directory #{plugin_name} already exists"
        end
        
        def set_working_dir!
          FileUtils.mkdir(plugin_name)
          FileUtils.cd(plugin_name)
        end
        
        def cp_template_files!
          FileUtils.cp_r("#{COMMON_TEMPLATES_PATH}/.", '.')
          system('ditto', File.join(TEMPLATE_DIRECTORY_PATH, 'language-specific', language), '.')
        end
        
        def inflate_templates!
          Dir.glob('*/').each do |dir|
            FileUtils.cd(dir)
            inflate_templates!
            FileUtils.cd('..')
            dir_name = dir.delete_suffix('/')
            normalized_name = normalized_name(dir_name)
            FileUtils.mv(dir_name, normalized_name) if dir_name != normalized_name
          end
          inflate_files
        end
        
        def chmod_frameworks_script!
          FileUtils.chmod 0755, 'create-framework.sh'
        end
        
        def create_framework_proj!
          proj = Xcodeproj::Project.new(FileUtils.pwd)
          target = proj.new_target(:framework, "#{plugin_name}Framework", :ios, '10.0')
          main_group = proj.new_group(plugin_name, plugin_name)
          classes_group = main_group.new_group('Classes', 'Classes')
          references = Dir.glob("#{plugin_name}/Classes/**").map{ |file| classes_group.new_file(file.split('/').last) }
          main_group.new_file('Info.plist')
          target.add_file_references(references)
          target.build_configurations.each do |config|
            config.build_settings['INFOPLIST_FILE'] = "$(SRCROOT)/#{plugin_name}/Info.plist"
          end
          proj.save("#{plugin_name}.xcodeproj")
        end
        
        def run_pod_install!
          system 'pod install'
        end
        
        def inflate_files
          Dir.glob("*#{TEMPLATE_FILES_EXTENSION}").each do |file|
            File.write(normalized_name(file), contents(file))
            FileUtils.rm(file)
          end
        end
        
        def normalized_name(file)
          file.gsub('PLUGIN_NAME', plugin_name).delete_suffix(TEMPLATE_FILES_EXTENSION)
        end
        
        def contents(file)
          Utils::TemplateInflator.new(File.read(file)).call(PLUGIN_NAME: plugin_name, REPO_NAME: repo_name)
        end
        
        def repo_name
          plugin_name.underscore.dasherize.prepend 'ios-'
        end
      end
    end
  end
end