HTTP API with health, greeting, auth, device CRUD, sensor creation, MQTT ping, and stored message retrieval
JWT-based auth middleware with demo login (admin/password)
MQTT client with startup publish and best-effort subscription to persist state: topics into SQLite
SQLite sidecar (file) for recent MQTT state messages
Multi-stage Dockerfile (CGO-enabled for sqlite3) and Makefile for common tasks
test/docker-compose.yml spins up MySQL, Mosquitto, phpMyAdmin, and the server for local integration

Quickstart 🔧

Build and run locally:

make build
./bin/server

Run tests:

make test

Build Docker image:

make docker-build

Then run it:

docker run -p 8080:8080 lambdaiot-core:latest

Integration stack (MySQL + Mosquitto + server):

cd test
docker compose up -d --build

The compose file seeds the database from ai-improved.sql and exposes:

GET /health — returns { "status": "ok" }
GET /hello — greeting JSON
POST /login — demo login, body { "username": "admin", "password": "password" }, returns { "token": "..." }
GET /protected — JWT required
GET /devices — list devices (public) / POST /devices, GET/PUT/DELETE /devices/:id (JWT)
Sensors (JWT): GET /sensors, GET /sensors/:id, POST /sensors, PUT /sensors/:id, DELETE /sensors/:id
Actors (JWT): GET /actors, GET /actors/:id, POST /actors, PUT /actors/:id, DELETE /actors/:id
Sensor readings (JWT): GET /sensor-readings, GET /sensor-readings/:id, POST /sensor-readings, PUT /sensor-readings/:id, DELETE /sensor-readings/:id (optional sensor_id filter and pagination via limit, page)
GET /mqttping — publish timestamp to MQTT default topic (JWT)
GET /messages — last stored MQTT state messages from SQLite (JWT)

JWT_SECRET — (optional) secret used to sign tokens; defaults to secret for local/dev use
MQTT_* — configure broker, client ID, topic, username/password
DB_* — MySQL connection overrides; see config.toml defaults in internal/config

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