Car Renting
Reservation App
A premium mobile booking application engineered with Flutter and Dart, supporting real-time database lookups, secure verification steps, and automated reservation management.
Project Overview
The Car Renting mobile application enables users to select premium vehicles, calculate multi-day rental reservations, and manage their reservations within an all-in-one Flutter mobile workspace.
The Problem Statement
Ensuring smooth operations when multiple clients attempt to reserve the same vehicle on overlapping schedules. Without solid locking boundaries, mobile databases easily accept duplicate transactions.
The Solution Engineered
Structured Firestore rules verifying listing availability conditions before writes. Configured real-time query listeners updating mobile state values dynamically, informing other users of bookings instantly.
System Architecture & Orchestration
Click a Layer to Trace Data Flow
Details Panel
Multiplatform compilation for iOS and Android. Reusable component layouts utilizing strict pixel layouts and native widgets.
Key Features Demonstrated
- Custom responsive theme files maintaining accessibility guidelines
- Provider state boundaries updating listing items instantly
- Native calendar picker packages handling booking date matrices
- Smooth micro-interactions rendering asset loading sequences
Mobile Booking Emulator
Select a vehicle and adjust reservation days to test the mobile app calculations.
Engineering Solutions
Scheduler Overlapping Resolution
Problem: Standard date counters allow two bookings to occupy the same slots. Firestore's async nature can lead to race conditions where overlapping listings are written simultaneously.
Solution: Executed reservation inserts under strict Firebase security rule gates. The database validates transaction documents against a sub-collection of reserved dates, rejecting writes if overlap metrics are identified.
Cross-Platform Compilation Optimization
Problem: Complex widgets caused frame drops on older Android displays, violating smooth scroll experiences.
Solution: Refactored widget trees to avoid nested layout builders. Leveraged const widget declarations, allowing Flutter to skip redundant redraw steps. Standardized state caches, resulting in smooth 60fps renders on target devices.