Integrate Notification Service into Tender Management System

- Added a new notification service to handle various notification types (email, SMS, push, OTP).
- Implemented configuration for the notification service, allowing customization via environment variables.
- Updated user and customer services to utilize the notification service for sending welcome emails and status updates.
- Introduced a builder pattern for constructing notification requests, enhancing usability and flexibility.
- Enhanced error handling and logging for notification operations, ensuring robust service integration.
- Updated documentation to include usage examples and configuration details for the new notification SDK.

internal/user/service.go

@@ -3,10 +3,12 @@ package user
 import (
 	"context"
 	"errors"
+	"fmt"
 	"strings"
 	"time"
 	"tm/pkg/authorization"
 	"tm/pkg/logger"
+	"tm/pkg/notification"
 	"tm/pkg/response"
 
 	"go.mongodb.org/mongo-driver/v2/bson"
@@ -34,19 +36,21 @@ type Service interface {
 
 // userService implements the Service interface
 type userService struct {
-	repository  Repository
-	logger      logger.Logger
-	authService authorization.AuthorizationService
-	validator   ValidationService
+	repository   Repository
+	logger       logger.Logger
+	authService  authorization.AuthorizationService
+	validator    ValidationService
+	notification notification.SDK
 }
 
 // NewUserService creates a new user service
-func NewUserService(repository Repository, logger logger.Logger, authService authorization.AuthorizationService, validator ValidationService) Service {
+func NewUserService(repository Repository, logger logger.Logger, authService authorization.AuthorizationService, validator ValidationService, notificationSDK notification.SDK) Service {
 	return &userService{
-		repository:  repository,
-		logger:      logger,
-		authService: authService,
-		validator:   validator,
+		repository:   repository,
+		logger:       logger,
+		authService:  authService,
+		validator:    validator,
+		notification: notificationSDK,
 	}
 }
 
@@ -112,6 +116,8 @@ func (s *userService) Register(ctx context.Context, form *CreateUserForm) (*User
 		"role":     user.Role,
 	})
 
+	go s.notification.SendEmail(ctx, form.Email, fmt.Sprintf("Welcome to Tender Management\nUsername: %s\nPassword: %s", form.Username, form.Password), user.ID.Hex())
+
 	return user.ToResponse(), nil
 }
 
@@ -214,6 +220,8 @@ func (s *userService) UpdateStatus(ctx context.Context, id string, form *UpdateU
 		"status":  form.Status,
 	})
 
+	go s.notification.SendEmail(ctx, user.Email, fmt.Sprintf("Your account has been %s", strings.ToUpper(form.Status)), user.ID.Hex())
+
 	return nil
 }
 
@@ -442,6 +450,8 @@ func (s *userService) ChangePassword(ctx context.Context, userID string, form *C
 		"user_id": userID,
 	})
 
+	go s.notification.SendEmail(ctx, user.Email, "Your password has been reset successfully", user.ID.Hex())
+
 	return nil
 }