How to create serverless telegram chatbot to generate image using google app script and OpenAI Dall.E API from OpenAI.

• Google Gmail account ( where your android playstore account is )
• OpenAI account , see https://beta.openai.com/account/api-keys
• Telegram chatbot token, see https://t.me/BotFather

[1] Goto https://script.google.com/home , click "New Project"

[2] Write the scripts, copy paste from below template url :

https://raw.githubusercontent.com/WingsMaker/chatgptbot/main/imagebot_gas.txt

[3] Rename the project

Click on the "Untitled project" to rename the project as something else. Example, "My ChatGPT bot".

[4] Deploy as google web app

In the Google App Script project, go to "Publish" in the top navigation bar. Under "Deploy as web app", select "Deploy". This will open a pop-up window. Your web app URL will be listed in the "Current web app URL" field.

Click on the "Deploy - New Deployment"

Click "Select type - Web App"

Fill in the form and click "Deploy". ( for more see https://www.youtube.com/watch?v=-AlstV1PAaA )

Copy the web app url to the clipboard for later use.

[5] Update the values of weburi in the script.

Remove the substrings "https://script.google.com/macros/s/" and "/exec" of url. Copy the result to clipboard. Change the value of statement, paste the weburi address into here.

var weburi = "paste_here";

[6] Update the values of token in the script.

Find your Telegram chatbot token by logging into the BotFather in Telegram, selecting your bot, and clicking the "API Token" button. ( see https://www.youtube.com/watch?v=aNmRNjME6mE ) Change the value of statement, paste the bot token into here.

var token = "replace_here";

[7] Update the values of apiKey in the script.

The api secret key for Chat GPT is located in the My Apps page of your Chat GPT dashboard. ( for more see https://www.youtube.com/watch?v=DFmmiYlbgX0 ) Change the value of statement, paste the api secret key into here.

var apiKey = "replace_here";

[8] Save the script and REDO the deployment process in step 4

since the code has been changed, need to update the value of webappUrl in [7].

[9] Run the "start_bot" function for only once to make sure actual telegram bot able to callback this google web app.

Your telegram bot is ready !

Reference https://platform.openai.com/docs/guides/images/