feat: implement device management endpoints and database connection

cmd/server/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 	"log"
 	"net/http"
@@ -11,6 +12,7 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
+	_ "github.com/go-sql-driver/mysql"
 
 	"git.piskot.si/SeminarM2/lambdaiot-core/internal/config"
 	"git.piskot.si/SeminarM2/lambdaiot-core/internal/handler"
@@ -25,6 +27,20 @@ func main() {
 		log.Fatalf("failed to load config: %v", err)
 	}
 
+	// connect to database
+	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?parseTime=true", cfg.Database.User, cfg.Database.Password, cfg.Database.Host, cfg.Database.Port, cfg.Database.Name)
+	db, err := sql.Open("mysql", dsn)
+	if err != nil {
+		log.Fatalf("failed to connect to database: %v", err)
+	}
+	defer db.Close()
+
+	// test connection
+	if err := db.Ping(); err != nil {
+		log.Fatalf("failed to ping database: %v", err)
+	}
+	log.Println("connected to database")
+
 	// determine address
 	addr := cfg.Server.Address
 	if addr == "" {
@@ -69,18 +85,27 @@ func main() {
 	r.Use(gin.Recovery())
 	r.Use(middleware.GinLogger())
 
+	h := &handler.Handler{DB: db, JWTSecret: cfg.Server.JWTSecret}
+
 	// Public routes
-	r.GET("/health", handler.Health)
-	r.GET("/hello", handler.Hello)
-	r.POST("/login", handler.Login)
+	r.GET("/health", h.Health)
+	r.GET("/hello", h.Hello)
+	r.POST("/login", h.Login)
+	r.GET("/devices", h.GetDevices)
 
 	// mqttping endpoint handled by internal/handler
-	r.POST("/mqttping", handler.MQTTPing)
+	r.POST("/mqttping", h.MQTTPing)
 
 	// Protected routes
 	auth := r.Group("/")
 	auth.Use(middleware.AuthMiddleware(cfg.Server.JWTSecret))
-	auth.GET("/protected", handler.Protected)
+	auth.GET("/protected", h.Protected)
+
+	// Device CRUD routes
+	auth.POST("/devices", h.CreateDevice)
+	auth.GET("/devices/:id", h.GetDevice)
+	auth.PUT("/devices/:id", h.UpdateDevice)
+	auth.DELETE("/devices/:id", h.DeleteDevice)
 
 	srv := &http.Server{
 		Addr:    addr,