feat: advanced prompt (#1330)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: Gillian97 <jinling.sunshine@gmail.com>

web/app/components/base/prompt-editor/plugins/variable-block/index.tsx

@@ -0,0 +1,45 @@
+import { useEffect } from 'react'
+import {
+  $insertNodes,
+  COMMAND_PRIORITY_EDITOR,
+  createCommand,
+} from 'lexical'
+import { mergeRegister } from '@lexical/utils'
+import { useLexicalComposerContext } from '@lexical/react/LexicalComposerContext'
+import { CustomTextNode } from '../custom-text/node'
+
+export const INSERT_VARIABLE_BLOCK_COMMAND = createCommand('INSERT_VARIABLE_BLOCK_COMMAND')
+export const INSERT_VARIABLE_VALUE_BLOCK_COMMAND = createCommand('INSERT_VARIABLE_VALUE_BLOCK_COMMAND')
+
+const VariableBlock = () => {
+  const [editor] = useLexicalComposerContext()
+
+  useEffect(() => {
+    return mergeRegister(
+      editor.registerCommand(
+        INSERT_VARIABLE_BLOCK_COMMAND,
+        () => {
+          const textNode = new CustomTextNode('{')
+          $insertNodes([textNode])
+
+          return true
+        },
+        COMMAND_PRIORITY_EDITOR,
+      ),
+      editor.registerCommand(
+        INSERT_VARIABLE_VALUE_BLOCK_COMMAND,
+        (value: string) => {
+          const textNode = new CustomTextNode(value)
+          $insertNodes([textNode])
+
+          return true
+        },
+        COMMAND_PRIORITY_EDITOR,
+      ),
+    )
+  }, [editor])
+
+  return null
+}
+
+export default VariableBlock