Add upgrade task for 7.0

Supports removing webpacker and adding jsbundling-rails

lib/alchemy/upgrader.rb

@@ -26,9 +26,14 @@ def copy_new_config_file
       end
 
       def update_npm_package
-        desc "Install new npm package."
-        `yarn add @alchemy_cms/admin@~#{Alchemy.version}`
-        log "Installed new npm package."
+        desc "Update npm package."
+        if File.exist? Rails.root.join("config/importmap.rb")
+          `bin/importmap pin @alchemy_cms/admin@~#{Alchemy.version}`
+        elsif File.exist? Rails.root.join("package.json")
+          `yarn add @alchemy_cms/admin@~#{Alchemy.version}`
+        else
+          log("Could not update alchemy admin package! Make sure you have a JS bundler installed", :warning)
+        end
       end
     end
   end

lib/alchemy/upgrader/seven_point_zero.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require "thor"
+
+module Alchemy
+  class Upgrader::SevenPointZero < Upgrader
+    include Thor::Base
+    include Thor::Actions
+
+    class << self
+      def update_admin_entrypoint
+        if File.exist? "app/javascript/packs/alchemy/admin.js"
+          FileUtils.mv "app/javascript/packs/alchemy/admin.js", "app/javascript/alchemy_admin.js"
+        else
+          log "Skipping. No alchemy/admin entrypoint found. Maybe already migrated from Webpacker?", :info
+        end
+        if Dir.exist? "app/javascript/packs/alchemy"
+          if Dir.empty? "app/javascript/packs/alchemy"
+            FileUtils.rm_r "app/javascript/packs/alchemy"
+          end
+        end
+        if File.exist? "config/importmap.rb"
+          # We want the bundled package if using importmaps
+          task.gsub_file "app/javascript/alchemy_admin.js", 'import "@alchemy_cms/admin"', 'import "@alchemy_cms/dist/admin"'
+        end
+        if task.ask("Do you want to remove webpacker now? (y/N)", default: "N") == "y"
+          task.run "yarn remove @rails/webpacker webpack webpack-cli webpack-dev-server"
+          FileUtils.rm_r "app/javascript/packs"
+          FileUtils.rm_r "config/webpack"
+          FileUtils.rm "config/webpacker.yml"
+          FileUtils.rm "bin/webpack"
+          FileUtils.rm "bin/webpack-dev-server"
+        end
+        if task.ask("Do you want to add jsbundling-rails now? (Y/n)", default: "Y") == "Y"
+          task.run "bundle add jsbundling-rails"
+          task.run "bin/rails javascript:install:esbuild"
+        end
+      end
+
+      private
+
+      def task
+        @_task || new
+      end
+    end
+  end
+end

lib/tasks/alchemy/upgrade.rake

@@ -44,8 +44,14 @@ namespace :alchemy do
     end
 
     namespace "7.0" do
-      task "run" do
-        # no-op
+      task "run" => [
+        "alchemy:upgrade:7.0:update_admin_entrypoint",
+      ]
+
+      desc "Update alchemy admin entrypoint"
+      task update_admin_entrypoint: [:environment] do
+        puts "adding npm_package..."
+        Alchemy::Upgrader::SevenPointZero.update_admin_entrypoint
       end
     end
   end