✨ Introducing The Forge (#1072)

The Forge allows anyone to easily create their own Typebot Block.

Closes #380

packages/forge/blocks/openai/helpers/parseChatCompletionMessages.ts

@@ -0,0 +1,54 @@
+import type { OpenAI } from 'openai'
+import { options as createChatCompletionOption } from '../actions/createChatCompletion'
+import { ReadOnlyVariableStore } from '@typebot.io/forge'
+import { isNotEmpty } from '@typebot.io/lib'
+import { z } from '@typebot.io/forge/zod'
+
+export const parseChatCompletionMessages = ({
+  options: { messages },
+  variables,
+}: {
+  options: Pick<z.infer<typeof createChatCompletionOption>, 'messages'>
+  variables: ReadOnlyVariableStore
+}): OpenAI.Chat.ChatCompletionMessageParam[] => {
+  const parsedMessages = messages
+    ?.flatMap((message) => {
+      if (!message.role) return
+
+      if (message.role === 'Dialogue') {
+        if (!message.dialogueVariableId) return
+        const dialogue = variables.get(message.dialogueVariableId) ?? []
+        const dialogueArr = Array.isArray(dialogue) ? dialogue : [dialogue]
+
+        return dialogueArr.map<OpenAI.Chat.ChatCompletionMessageParam>(
+          (dialogueItem, index) => {
+            if (index === 0 && message.startsBy === 'assistant')
+              return {
+                role: 'assistant',
+                content: dialogueItem,
+              }
+            return {
+              role:
+                index % (message.startsBy === 'assistant' ? 1 : 2) === 0
+                  ? 'user'
+                  : 'assistant',
+              content: dialogueItem,
+            }
+          }
+        )
+      }
+
+      if (!message.content) return
+
+      return {
+        role: message.role,
+        content: variables.parse(message.content),
+      } satisfies OpenAI.Chat.ChatCompletionMessageParam
+    })
+    .filter(
+      (message) =>
+        isNotEmpty(message?.role) && isNotEmpty(message?.content?.toString())
+    ) as OpenAI.Chat.ChatCompletionMessageParam[]
+
+  return parsedMessages
+}