start implementing auth

handlers/user.go

@@ -0,0 +1,62 @@
+package handlers
+
+import (
+	"encoding/json"
+	"go-weather/models"
+	"go-weather/services"
+	"net/http"
+	"strings"
+)
+
+type UserHandler struct {
+	userService *services.UserService
+}
+
+func NewUserHandler(us *services.UserService) *UserHandler {
+	return &UserHandler{userService: us}
+}
+
+func (h *UserHandler) Register(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req models.RegisterRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, "invalid request body", http.StatusBadRequest)
+		return
+	}
+
+	req.Email = strings.TrimSpace(strings.ToLower(req.Email))
+	if req.Email == "" || req.Password == "" {
+		http.Error(w, "email and password are required", http.StatusBadRequest)
+		return
+	}
+
+	if len(req.Password) < 8 {
+		http.Error(w, "password must be at least 8 characters", http.StatusBadRequest)
+		return
+	}
+
+	exists, err := h.userService.EmailExists(req.Email)
+	if err != nil {
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	if exists {
+		http.Error(w, "email already registered", http.StatusConflict)
+		return
+	}
+
+	user, err := h.userService.CreateUser(req.Email, req.Password)
+	if err != nil {
+		http.Error(w, "Failed to create user", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	json.NewEncoder(w).Encode(user)
+}