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JolandaVerhoef merged 1 commit into from
Jul 24, 2026
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Add AppFunctions info to README #183

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12 changes: 11 additions & 1 deletion jetpacker/README.md
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Expand Up @@ -14,7 +14,7 @@
</table>

## Overview
JetPacker provides users with powerful tools to manage their upcoming trips, build out rich itineraries, record voice notes, manage travel expenses, generate on-device "Trip Summaries and Tips", generate AI reviews, chat with hotel staff via automatic translation, and get real-time museum assistant guidance.
JetPacker provides users with powerful tools to manage their upcoming trips, build out rich itineraries, record voice notes, manage travel expenses, generate on-device "Trip Summaries and Tips", generate AI reviews, chat with hotel staff via automatic translation, get real-time museum assistant guidance, and contribute to Android's intelligence system with trip management functions through [AppFunctions](https://d.android.com/ai/appfunctions).

## Architecture
This project is built using modern Android architecture components:
Expand All @@ -25,6 +25,7 @@ This project is built using modern Android architecture components:
- **On-Device AI**: ML Kit GenAI (Prompt, Speech Recognition, Translation)
- **Cloud & Hybrid AI**: Firebase AI Logic (Gemini grounded with URL/Maps/Search, and hybrid models with on-device fallback)
- **App Security**: Firebase App Check (with Play Integrity and Debug Provider)
- **Assistant Integration**: Android [AppFunctions](https://d.android.com/ai/appfunctions) (`androidx.appfunctions`)

## Module Overview
JetPacker follows a clean, multi-module Android structure organized by responsibility and domain:
Expand All @@ -43,6 +44,7 @@ JetPacker follows a clean, multi-module Android structure organized by responsib
- **`:feature:home`**: Dashboard screen displaying the user's upcoming trips list.
- **`:feature:create_trip`**: Unified trip form module handling both new trip creation and existing trip editing (`EditTripScreen`).
- **`:feature:detail`**: Detailed view screens for specific itinerary events (Flights, Hotels, Restaurants, Museums, Tours).
- **`:feature:appfunctions`**: Android AppFunctions framework integration (`JetPackerAppFunctionService`) contributing structured functions to Android's intelligence system for trips, expenses, itineraries, and voice notes.
- **`:feature:trip`**: Top-level trip container shell (`TripScreen`) holding bottom navigation and orchestrating trip sub-tabs.
- **`:feature:trip:itinerary`**: Pure itinerary timeline screen displaying daily scheduled events.
- **`:feature:trip:itinerary:enrichment`**: On-device AI summaries and tips (`TripSummaryAndTipsCard`) and dynamic daily theme generators.
Expand Down Expand Up @@ -103,6 +105,14 @@ JetPacker also integrates online hybrid features using Firebase AI Logic (Gemini
- **ENABLE_REVIEW_GENERATION**: Topic-selected review generator (uses Gemini 2.5 flash-lite on-device with cloud fallback).
- **Hotel Support Chat**: Receives hotel receptionist assistance with real-time ML Kit + Gemini translation.

## AppFunctions Integration
JetPacker uses Android's [**AppFunctions**](https://d.android.com/ai/appfunctions) library (`androidx.appfunctions`) in `:feature:appfunctions` to contribute to Android's intelligence system with structured travel actions and data queries via `JetPackerAppFunctionService`:
- **Trip Management**: `searchTrip` (filter by ID, name, location, and dates) and `createTrip`.
- **Itinerary Events**: `getItinerary` and `addItineraryEvent` (activity, dining, accommodation, etc.).
- **Expense Tracking**: `getExpenses` and `addExpense` (amount, currency, category).
- **Voice Notes**: `getVoiceNotes` and `addVoiceNote` (recorded transcriptions linked to trips).
- **Day Themes**: `getDayThemes` and `setDayTheme` for daily trip customization.


## IDE Setup & Development

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