A multi-function LINE-based smart assistant integrating restaurant recommendations, weather forecasting, calendar scheduling, translation, and daily fortune insights.
This project was developed as part of an AIoT coursework project and aims to simplify daily life by reducing app-switching and providing instant information through one single chat interface.
Modern smart assistants like Siri or Google Assistant often require manual activation and switching between multiple apps.
Digua Digua solves this by integrating all daily-use functions into a single LINE chatbot interface.
Using APIs such as Google Maps, Google Calendar, Taiwan CWB Weather API, and Gemini AI, the bot provides:
- 🍽️ Restaurant recommendations based on real-time location
- 📅 Calendar event search & creation
- 🌤️ Weather forecasting
- 🌍 Multilingual translation
- 🔮 Daily fortune drawing
- 📘 Answer Book / knowledge question responses
LINE App → LINE Webhook → Flask Server (Ngrok Tunnel)
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External APIs (Google Maps / Calendar / Weather / Gemini)
- Flask Server
Handles webhook events, message parsing, API calls, and replies. - Ngrok
Converts localhost server into public HTTPS endpoint for LINE webhook validation. - External APIs
- Google Maps API – restaurant search
- Google Calendar API – event listing & creation
- Taiwan CWB Weather API – daily weather data
- Gemini API – translation & Q&A generation
Uses Google Maps Places API to find nearby high-rated restaurants based on user location. Supports keyword filters (e.g., “ramen”, “dinner”).
“查行程” → Retrieves today’s events
“新增行程 + 內容” → Generates Google Calendar event creation link
Helps users avoid forgetting tasks or schedules
Uses Taiwan’s CWB API to provide:
Temperature
Rain probability
UV index
Weather suggestion (e.g., bring umbrella!)
Powered by Gemini AI API:
Detects natural language
Translates into Chinese, English, Japanese, etc. Example: 「翻譯：我今天很開心，英文」 → “I’m happy today.”
Randomly selects a fortune with visual presentation. Example results: 吉 / 小吉 / 平
Uses Gemini AI + custom dataset to provide:
Knowledge answers
Simple explanations
Random advice
Input examples:
“解答之書”
“為什麼會下雨？”
- User sends message in LINE
- LINE Webhook forwards event to Flask server
- Flask parses intent and calls appropriate API
- Flask returns results to LINE
- User receives formatted reply
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Low entry barrier – no extra app needed
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High interactivity – instant responses
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Multi-feature integration – food, weather, schedules, translations
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Expandable – supports new AI models & features
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Cross-platform (LINE) – usable on mobile, tablet, desktop
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LINE push messages require paid quota
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External API limits (Google, Gemini)
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OAuth2 integration complexity
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Desktop vs mobile UI inconsistency
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Ngrok dependency (until deployed to cloud)
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Add user database to support personalized experience
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Link ordering systems (food delivery, hotel booking)
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Cloud deployment (already partially improved)
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Improve cross-device rendering consistency
The Digua Digua Smart Assistant successfully integrates six core life functions into one LINE bot:
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Restaurant recommendations
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Calendar integration
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Weather forecast
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Translation
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Daily fortune
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Q&A knowledge features
Users can access all these via a single LINE window, making daily information retrieval faster and more intuitive.
- Hsu Ya-Chuan
- Hsu Hsuan-Kuang
- Lin Wen-Chen