feat: PATCH /admin/customers/:id — customer update endpoint

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

controllers/adminController.go

@@ -516,6 +516,72 @@ func GetAdminCustomers(c *fiber.Ctx) error {
 	})
 }
 
+func UpdateAdminCustomer(c *fiber.Ctx) error {
+	id, err := strconv.Atoi(c.Params("id"))
+	if err != nil {
+		return utils.BadRequest(c, "invalid customer id")
+	}
+
+	var customer models.AppCustomer
+	if err := db.DB.First(&customer, id).Error; err != nil {
+		return utils.NotFound(c, "customer not found")
+	}
+
+	req := new(struct {
+		Name  string `json:"name"`
+		Phone string `json:"phone"`
+		Email string `json:"email"`
+	})
+	if err := c.BodyParser(req); err != nil {
+		return utils.BadRequest(c, "invalid request body")
+	}
+
+	if req.Phone != "" {
+		if len(req.Phone) != 10 || strings.IndexFunc(req.Phone, func(r rune) bool { return r < '0' || r > '9' }) != -1 {
+			return utils.BadRequest(c, "phone must be 10 digits")
+		}
+		customer.Phone = req.Phone
+	}
+
+	if req.Name != "" {
+		name := strings.TrimSpace(req.Name)
+		parts := strings.SplitN(name, " ", 2)
+		customer.Firstname = parts[0]
+		if len(parts) > 1 {
+			customer.Lastname = parts[1]
+		} else {
+			customer.Lastname = ""
+		}
+	}
+
+	if req.Email != "" {
+		customer.Email = req.Email
+	}
+
+	customer.Updatedat = time.Now()
+
+	if err := db.DB.Model(&models.AppCustomer{}).Where("appcustomerid = ?", customer.Appcustomerid).
+		Updates(map[string]interface{}{
+			"firstname": customer.Firstname,
+			"lastname":  customer.Lastname,
+			"phone":     customer.Phone,
+			"email":     customer.Email,
+			"updatedat": customer.Updatedat,
+		}).Error; err != nil {
+		return utils.Internal(c, "failed to update customer")
+	}
+
+	return c.JSON(fiber.Map{
+		"success": true,
+		"data": fiber.Map{
+			"appcustomerid": customer.Appcustomerid,
+			"name":          strings.TrimSpace(customer.Firstname + " " + customer.Lastname),
+			"phone":         customer.Phone,
+			"email":         customer.Email,
+		},
+	})
+}
+
 func CreateTenantCustomer(c *fiber.Ctx) error {
 	req := new(dto.TenantCustomerCreateRequest)
 	if err := c.BodyParser(req); err != nil {