require 'shopify_cli'
require 'rbconfig'

module ShopifyCli
  module Commands
    class System < ShopifyCli::Command
      hidden_command

      def call(args, _name)
        show_all_details = false
        flag = args.shift
        if flag && flag != 'all'
          @ctx.puts(@ctx.message('core.system.error.unknown_option', flag))
          @ctx.puts("\n" + self.class.help)
          return
        end

        show_all_details = true if flag == 'all'

        display_environment if show_all_details

        display_cli_constants(show_all_details)
        display_cli_ruby(show_all_details)
        display_utility_commands(show_all_details)
        display_project_commands(show_all_details)
      end

      def self.help
        ShopifyCli::Context.message('core.system.help', ShopifyCli::TOOL_NAME)
      end

      private

      def display_cli_constants(show_all_details)
        cli_constants = %w(ROOT)
        cli_constants_extra = %w(
          PROJECT_TYPES_DIR
          TEMP_DIR
          CACHE_DIR
          TOOL_CONFIG_PATH
          LOG_FILE
          DEBUG_LOG_FILE
        )

        cli_constants += cli_constants_extra if show_all_details

        @ctx.puts(@ctx.message('core.system.header'))
        cli_constants.each do |s|
          @ctx.puts("  " + @ctx.message('core.system.const', s, ShopifyCli.const_get(s.to_sym)) + "\n")
        end
      end

      def display_cli_ruby(_show_all_details)
        rbconfig_constants = %w(host RUBY_VERSION_NAME)

        @ctx.puts("\n" + @ctx.message('core.system.ruby_header', RbConfig.ruby))
        rbconfig_constants.each do |s|
          @ctx.puts("  " + @ctx.message('core.system.rb_config', RbConfig::CONFIG[s], s))
        end
      end

      def display_utility_commands(_show_all_details)
        commands = %w(git curl tar unzip)

        @ctx.puts("\n" + @ctx.message('core.system.command_header'))
        commands.each do |s|
          output, status = @ctx.capture2e('which', s)
          if status.success?
            @ctx.puts("  " + @ctx.message('core.system.command_with_path', s, output))
          else
            @ctx.puts("  " + @ctx.message('core.system.command_not_found', s))
          end
        end
      end

      def display_ngrok
        ngrok_location = File.join(ShopifyCli::CACHE_DIR, 'ngrok')
        if File.exist?(ngrok_location)
          @ctx.puts("  " + @ctx.message('core.system.ngrok_available', ngrok_location))
        else
          @ctx.puts("  " + @ctx.message('core.system.ngrok_not_available'))
        end
      end

      def display_project_commands(_show_all_details)
        case Project.current_project_type
        when :node
          display_project('Node.js', %w(npm node yarn))
        when :rails
          display_project('Rails', %w(gem rails rake ruby))
        end
      end

      def display_project(project_type, commands)
        @ctx.puts("\n" + @ctx.message('core.system.project.header', project_type))
        commands.each do |s|
          output, status = @ctx.capture2e('which', s)
          if status.success?
            version_output, _ = @ctx.capture2e(s, '--version')
            version = version_output.match(/(\d+\.[^\s]+)/)[0]
            @ctx.puts("  " + @ctx.message('core.system.project.command_with_path', s, output.strip, version.strip))
          else
            @ctx.puts("  " + @ctx.message('core.system.project.command_not_found', s))
          end
        end
        display_ngrok
        display_project_environment
      end

      def display_project_environment
        @ctx.puts("\n  " + @ctx.message('core.system.project.env_header'))
        if File.exist?('./.env')
          Project.current.env.to_h.each do |k, v|
            display_value = if v.nil? || v.strip == ''
              @ctx.message('core.system.project.env_not_set')
            else
              k.match(/^SHOPIFY_API/) ? "********" : v
            end
            @ctx.puts("  " + @ctx.message('core.system.project.env', k, display_value))
          end
        else
          @ctx.puts("  " + @ctx.message('core.system.project.no_env'))
        end
      end

      def display_environment
        @ctx.puts(@ctx.message('core.system.environment_header'))
        %w(TERM SHELL PATH USING_SHOPIFY_CLI LANG).each do |k|
          @ctx.puts("  " + @ctx.message('core.system.env', k, ENV[k])) unless ENV[k].nil?
        end
        @ctx.puts("")
      end
    end
  end
end