text.py

from flask import Flask, request, abort

from linebot.v3 import (
    WebhookHandler
)
from linebot.v3.exceptions import (
    InvalidSignatureError
)
from linebot.v3.messaging import (
    Configuration,
    ApiClient,
    MessagingApi,
    ReplyMessageRequest,
    TextMessage
)
from linebot.v3.webhooks import (
    MessageEvent,
    TextMessageContent
)
import google.generativeai as palm
import config

palm.configure(api_key=config.google_generativeai_token)

app = Flask(__name__)

configuration = Configuration(access_token=config.access_token)
handler = WebhookHandler(config.channel_secret)

models = [m for m in palm.list_models() if 'generateText' in m.supported_generation_methods]
model = models[0].name

@app.route("/text", methods=['POST'])
def callback():
    # get X-Line-Signature header value
    signature = request.headers['X-Line-Signature']

    # get request body as text
    body = request.get_data(as_text=True)
    app.logger.info("Request body: " + body)

    # handle webhook body
    try:
        handler.handle(body, signature)
    except InvalidSignatureError:
        app.logger.info("Invalid signature. Please check your channel access token/channel secret.")
        abort(400)

    return 'OK'


@handler.add(MessageEvent, message=TextMessageContent)
def handle_message(event):
    with ApiClient(configuration) as api_client:
        prompt = event.message.text
        completion = palm.generate_text(
            model=model,
            prompt=prompt,
            temperature=0,
            # The maximum length of the response
            max_output_tokens=800,
        )
        line_bot_api = MessagingApi(api_client)
        line_bot_api.reply_message_with_http_info(
            ReplyMessageRequest(
                reply_token=event.reply_token,
                messages=[TextMessage(text=str(completion.result))]
            )
        )

if __name__ == "__main__":
    app.run(port=config.port, debug=True)