Translate all properties of a post using ChatGPT

This query fetches the properties from a single post, and translates those strings to any language using ChatGPT.
To connect to the OpenAI API, you must provide variable $openAIAPIKey with the API key.
You can override the $model variable ("gpt-4o-mini" by default) with the OpenAI model you desire to use.
query GetPostProperties($postId: ID!) {
  post(by: { id: $postId }) {
    title
    content
    excerpt
      @export(
        as: "postProperties",
        affectAdditionalFieldsUnderPos: [1, 2]
      )
  }
}
 
query TranslatePostPropertiesWithChatGPT(
  $fromLang: String!
  $toLang: String!
  $openAIAPIKey: String!
  $systemMessage: String! = "You are a language translator"
  $promptTemplate: String! = """
I'm working on internationalizing my application.
 
I've created a JSON with sentences in {$fromLang}. Please translate the sentences to {$toLang}.
 
Keep the object properties identical, translate the values only.
 
If a sentence contains HTML, do not translate inside the HTML tags.
 
This is the JSON:
 
{$encodedPostProperties}
"""
  $model: String! = "gpt-4o-mini"
)
  @depends(on: "GetPostProperties")
{
  postProperties: _echo(value: $postProperties)
  encodedPostProperties: _objectEncodeAsJSONString(object: $postProperties)
  prompt: _strReplaceMultiple(
    search: ["{$fromLang}", "{$toLang}", "{$encodedPostProperties}"],
    replaceWith: [$fromLang, $toLang, $__encodedPostProperties],
    in: $promptTemplate
  )
  openAIResponse: _sendJSONObjectItemHTTPRequest(input: {
    url: "https://api.openai.com/v1/chat/completions",
    method: POST,
    options: {
      auth: {
        password: $openAIAPIKey
      },
      json: {
        model: $model,
        messages: [
          {
            role: "system",
            content: $systemMessage
          },
          {
            role: "user",
            content: $__prompt
          },
        ],
        response_format: {
          type: "json_schema",
          json_schema: {
            name: "translation_response",
            strict: true,
            schema: {
              type: "object",
              properties: {
                translations: {
                  type: "array",
                  items: {
                    type: "object",
                    properties: {
                      property: {
                        type: "string"
                      },
                      translation: {
                        type: "string"
                      }
                    },
                    required: ["property", "translation"],
                    additionalProperties: false
                  }
                }
              },
              required: ["translations"],
              additionalProperties: false
            }
          }
        }
      }
    }
  })
    @underJSONObjectProperty(by: { key: "choices" })
      @underArrayItem(index: 0)
        @underJSONObjectProperty(by: { path: "message.content" })
          @export(as: "jsonEncodedTranslatedPostProperties")
}
 
query ExtractTranslatedPostProperties
  @depends(on: "TranslatePostPropertiesWithChatGPT")
{
  jsonEncodedTranslatedPostProperties: _echo(value: $jsonEncodedTranslatedPostProperties)
    @remove
  decodedTranslatedPostProperties: _strDecodeJSONObject(string: $jsonEncodedTranslatedPostProperties)
    @remove
  translatedPostProperties: _objectProperty(
    object: $__decodedTranslatedPostProperties,
    by: { key: "translations" }
  )
  translatedPostPropertiesAsJSON: _arrayOfJSONObjectsExtractPropertiesAndConvertToObject(
    array: $__translatedPostProperties,
    key: "property",
    value: "translation"
  )
}