implement graphQL and init postgres

local/controller/membership.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"omega-server/local/middleware"
+	"omega-server/local/model"
 	"omega-server/local/service"
 	"omega-server/local/utl/common"
 	"omega-server/local/utl/error_handler"
@@ -52,7 +53,7 @@ func NewMembershipController(service *service.MembershipService, auth *middlewar
 // Login handles user login.
 func (c *MembershipController) Login(ctx *fiber.Ctx) error {
 	type request struct {
-		Username string `json:"username"`
+		Email    string `json:"email"`
 		Password string `json:"password"`
 	}
 
@@ -62,7 +63,7 @@ func (c *MembershipController) Login(ctx *fiber.Ctx) error {
 	}
 
 	logging.Debug("Login request received")
-	token, err := c.service.Login(ctx.UserContext(), req.Username, req.Password)
+	token, err := c.service.Login(ctx.UserContext(), req.Email, req.Password)
 	if err != nil {
 		return c.errorHandler.HandleAuthError(ctx, err)
 	}
@@ -72,23 +73,35 @@ func (c *MembershipController) Login(ctx *fiber.Ctx) error {
 
 // CreateUser creates a new user.
 func (mc *MembershipController) CreateUser(c *fiber.Ctx) error {
-	type request struct {
-		Username string `json:"username"`
-		Password string `json:"password"`
-		Role     string `json:"role"`
-	}
-
-	var req request
+	var req model.UserCreateRequest
 	if err := c.BodyParser(&req); err != nil {
 		return mc.errorHandler.HandleParsingError(c, err)
 	}
 
-	user, err := mc.service.CreateUser(c.UserContext(), req.Username, req.Password, req.Role)
+	// Validate request
+	if err := req.Validate(); err != nil {
+		return mc.errorHandler.HandleValidationError(c, err, "user_create_request")
+	}
+
+	// Map to domain model
+	user, err := req.ToUser()
+	if err != nil {
+		return mc.errorHandler.HandleValidationError(c, err, "user_mapping")
+	}
+
+	// Extract role names from request
+	roleIDs := req.RoleIDs
+	if len(roleIDs) == 0 {
+		roleIDs = []string{"user"} // default role
+	}
+
+	// Call service with domain model
+	createdUser, err := mc.service.CreateUser(c.UserContext(), user, roleIDs)
 	if err != nil {
 		return mc.errorHandler.HandleServiceError(c, err)
 	}
 
-	return c.JSON(user)
+	return c.JSON(createdUser.ToResponse())
 }
 
 // ListUsers lists all users.
@@ -98,7 +111,13 @@ func (mc *MembershipController) ListUsers(c *fiber.Ctx) error {
 		return mc.errorHandler.HandleServiceError(c, err)
 	}
 
-	return c.JSON(users)
+	// Convert to response format
+	userResponses := make([]*model.UserResponse, len(users))
+	for i, user := range users {
+		userResponses[i] = user.ToResponse()
+	}
+
+	return c.JSON(userResponses)
 }
 
 // GetUser gets a single user by ID.
@@ -113,7 +132,7 @@ func (mc *MembershipController) GetUser(c *fiber.Ctx) error {
 		return mc.errorHandler.HandleNotFoundError(c, "User")
 	}
 
-	return c.JSON(user)
+	return c.JSON(user.ToResponse())
 }
 
 // GetMe returns the currently authenticated user's details.
@@ -128,10 +147,7 @@ func (mc *MembershipController) GetMe(c *fiber.Ctx) error {
 		return mc.errorHandler.HandleNotFoundError(c, "User")
 	}
 
-	// Sanitize the user object to not expose password
-	user.PasswordHash = ""
-
-	return c.JSON(user)
+	return c.JSON(user.ToResponse())
 }
 
 // DeleteUser deletes a user.
@@ -156,17 +172,22 @@ func (mc *MembershipController) UpdateUser(c *fiber.Ctx) error {
 		return mc.errorHandler.HandleUUIDError(c, "user ID")
 	}
 
-	var req service.UpdateUserRequest
+	var req model.UserUpdateRequest
 	if err := c.BodyParser(&req); err != nil {
 		return mc.errorHandler.HandleParsingError(c, err)
 	}
 
-	user, err := mc.service.UpdateUser(c.UserContext(), id, req)
+	// Validate request
+	if err := req.Validate(); err != nil {
+		return mc.errorHandler.HandleValidationError(c, err, "user_update_request")
+	}
+
+	user, err := mc.service.UpdateUser(c.UserContext(), id, &req)
 	if err != nil {
 		return mc.errorHandler.HandleServiceError(c, err)
 	}
 
-	return c.JSON(user)
+	return c.JSON(user.ToResponse())
 }
 
 // GetRoles returns all available roles.