feat: enhance Dockerfile for SQLite support and update main.go for MySQL connection; add sensor creation endpoint and improve wait-for-mqtt script

internal/handler/handlers.go

@@ -68,10 +68,10 @@ func (h *Handler) Login(c *gin.Context) {
 
 func (h *Handler) CreateSensor(c *gin.Context) {
 	var req struct {
-		DeviceID  string `json:"device_id" binding:"required,uuid"`
-		Name      string `json:"name" binding:"required"`
-		Type      string `json:"type" binding:"required"`
-		Data_Type string `json:"data_type" binding:"required"`
+		DeviceID   string `json:"device_id" binding:"required,uuid"`
+		Name       string `json:"name" binding:"required"`
+		Type       string `json:"type" binding:"required"`
+		DataTypeID int    `json:"data_type_id" binding:"required,min=1"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -84,9 +84,9 @@ func (h *Handler) CreateSensor(c *gin.Context) {
 		return
 	}
 
-	// Create sensor in database
+	// Create sensor in database (schema uses data_type_id)
 	sensorID := uuid.New()
-	_, err = h.DB.Exec("INSERT INTO sensors (id, device_id, name, type, data_type) VALUES (UUID_TO_BIN(?), UUID_TO_BIN(?), ?, ?, ?)", sensorID.String(), deviceUUID.String(), req.Name, req.Type, req.Data_Type)
+	_, err = h.DB.Exec("INSERT INTO sensors (id, device_id, name, type, data_type_id) VALUES (UUID_TO_BIN(?), UUID_TO_BIN(?), ?, ?, ?)", sensorID.String(), deviceUUID.String(), req.Name, req.Type, req.DataTypeID)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create sensor"})
 		return
@@ -246,6 +246,23 @@ func (h *Handler) Protected(c *gin.Context) {
 	c.JSON(http.StatusUnauthorized, gin.H{"error": "no claims"})
 }
 
+// Package-level handlers used by tests
+func Health(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{"status": "ok"})
+}
+
+func Hello(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{"message": "hello from lambdaiot"})
+}
+
+func Protected(c *gin.Context) {
+	if v, ok := c.Get("claims"); ok {
+		c.JSON(http.StatusOK, gin.H{"claims": v})
+		return
+	}
+	c.JSON(http.StatusUnauthorized, gin.H{"error": "no claims"})
+}
+
 // GetMessages returns the last 100 state messages with optional pagination
 // query parameter: ?page=N (0-based)
 func GetMessages(c *gin.Context) {