Namma MedGate

Namma MedGate is a Flutter prototype for contactless patient intake and protected transmission workflows. The app is designed to demonstrate a realistic clinical handoff experience from intake to specialist review prioritising reliability and recovery behavior.

Current Features

Feature	Description
GZIP Compression	Payload shrinks before leaving the device.
Pipeline	Raw data → binary encoding → gzip → encryption → redundancy chunks → network transmission.
Delta Encoding	Only changed fields are sent, compared against the last successfully transmitted record in local storage — not just the last edit.
Recovery (XOR/Reed-Solomon)	RAID 5-style parity reconstructs lost chunks. Fails honestly past its correction limit — same as QR codes failing when damage is too severe.
Recovery Confidence Score	Reflects real math, not inflated. Severe loss can mean partial or failed recovery — that's intentional, not a bug.
Priority Ordering	Vitals always transmit before images.
Progressive Specialist View	Sections unlock as data rebuilds; shows rebuilt data, changed fields, checksums, and transmission proof.
Store-and-Forward	Failed sends retry automatically.
Urgent Case Mode	Speeds up fallback trigger; lets a tiny thumbnail through even in fallback.
Network Simulator	Adjustable loss/bandwidth profiles with live feedback on packet loss, recovery, delivery time, and compression size.
Image Recovery	Same erasure-coding pipeline applied to image tiles — specialist console shows corrupted-vs-recovered images side by side, with real stats.
Clinical Alerts	Glass-style banners/toasts tied to real events — rebuild failure, degraded channel, fallback activation, NFC issues, implausible vitals.

Tech Stack

Layer	Tools Used
App Framework	Flutter, Dart
State Management	Riverpod
Navigation	Go Router
NFC	NFC Manager
Local Storage	sqflite
Animation	Flutter Animate
Chunking Acceleration	Optional Rust (native FFI)

Why Open-Source Building Blocks

Package	Purpose
archive	GZIP/DEFLATE compression
crypto	Field-level hashing
encrypt	Payload encryption
flutter_image_compress	Image compression

Real, proven algorithms — not reinvented ones.

Rust

Aspect	Reason
Workload	Chunking is CPU-bound, byte-heavy work
Benefit	Faster processing, no GC overhead
Fallback	Automatically uses pure Dart if Rust isn't installed