# frozen_string_literal: true

require "fileutils"
require_relative "../syncer"
require_relative "../development_theme"
require "shopify_cli/git"
require "shopify_cli/theme/extension/ui/host_theme_progress_bar"
require "tmpdir"

require "shopify_cli/git"
require "shopify_cli/theme/development_theme"
require "shopify_cli/theme/syncer"

module ShopifyCLI
  module Theme
    module Extension
      class HostTheme < DevelopmentTheme
        def id
          ShopifyCLI::DB.get(:host_theme_id)
        end

        def name
          existing_name = ShopifyCLI::DB.get(:host_theme_name)
          if existing_name.nil? || existing_name.length > API_NAME_LIMIT
            generate_host_theme_name
          else
            existing_name
          end
        end

        def ensure_exists!
          if exists?
            @ctx.debug("Using temporary host theme: ##{id} #{name}")
          else
            create
            @ctx.debug("Created temporary host theme: #{@id}")
          end

          self
        end

        def self.delete(ctx)
          new(ctx, root: nil).delete
        end

        def delete
          delete_theme if exists? # Avoid deleting any existing development theme logic

          ShopifyCLI::DB.del(:host_theme_id) if ShopifyCLI::DB.exists?(:host_theme_id)
          ShopifyCLI::DB.del(:host_theme_name) if ShopifyCLI::DB.exists?(:host_theme_name)
        end

        def create
          super
          ShopifyCLI::DB.set(host_theme_id: @id)

          generate_tmp_theme
        end

        def self.find_or_create!(ctx)
          new(ctx, root: nil).ensure_exists!
        end

        private

        def generate_host_theme_name
          hostname = Socket.gethostname.split(".").shift
          hash = SecureRandom.hex(3)

          theme_name = "App Ext. Host ()"
          hostname_character_limit = API_NAME_LIMIT - theme_name.length - hash.length - 1
          identifier = encode_identifier("#{hash}-#{hostname[0, hostname_character_limit]}")
          theme_name = "App Ext. Host (#{identifier})"

          ShopifyCLI::DB.set(host_theme_name: theme_name)

          theme_name
        end

        def generate_tmp_theme
          ctx = @ctx.dup

          Dir.mktmpdir do |dir|
            @root = Pathname.new(dir)
            ctx.root = dir

            syncer = ShopifyCLI::Theme::Syncer.new(ctx, theme: self)

            begin
              syncer.start_threads
              ::CLI::UI::Frame.open(ctx.message("theme.push.info.pushing", name, id, shop)) do
                UI::HostThemeProgressBar.new(syncer, dir).progress(:upload_theme!, delete: false)
              end
            rescue Errno::ENOENT => e
              ctx.debug(e.message)
            ensure
              syncer.shutdown
            end
          end
        end
      end
    end
  end
end