TravelPool ✈️🏨💬

TravelPool is a collaborative trip planning and expense-splitting Android app built with Jetpack Compose, Firebase (Auth + Firestore), and a Cloudflare Worker backend for travel search.

---

Core Features

Trips

• Create a trip with destination + date range + optional starting airport
• Invite others via Join Code
• Join trips using Join Code

Itinerary

• Add itinerary items (flight/hotel/activity/etc.)
• Edit and delete items

Pool (Shared Expenses)

• Add expenses and contributions
• Compute group costs and track who paid / who owes
• Settlements support

Chat

• In-trip messaging so members can coordinate travel planning

Notifications

• Per-user notifications

Travel Search (Backend)

• A Cloudflare Worker powers endpoints for flight + hotel search
• API secrets are stored in Cloudflare environment variables (not committed)

---

Tech Stack

Android

• Kotlin, Jetpack Compose (Material 3)
• Coroutines + Flow
• MVVM architecture (ViewModel + Repository pattern)

Firebase

• Firebase Authentication
• Cloud Firestore
• Firestore Security Rules (firestore.rules)
• Firestore Indexes (firestore.indexes.json)

Backend

• Cloudflare Workers (TypeScript) in search-worker/
• External travel APIs (Amadeus)
• Credentials stored as Cloudflare secrets/env vars