feat: send in-app and push learner notifications for key milestones

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/main.go

@@ -22,6 +22,7 @@ import (
 	"Yimaru-Backend/internal/services/faqs"
 	issuereporting "Yimaru-Backend/internal/services/issue_reporting"
 	lessonsservice "Yimaru-Backend/internal/services/lessons"
+	learnernotificationsservice "Yimaru-Backend/internal/services/learnernotifications"
 	"Yimaru-Backend/internal/services/lmsprogress"
 	"Yimaru-Backend/internal/services/messenger"
 	minioservice "Yimaru-Backend/internal/services/minio"
@@ -316,6 +317,8 @@ func main() {
 		store, // implements SubscriptionStore
 	)
 
+	learnerNotifSvc := learnernotificationsservice.New(notificationSvc)
+
 	// Chapa service for subscription checkout payments
 	chapaSvc := chapa.NewService(
 		cfg,
@@ -324,6 +327,8 @@ func main() {
 		store,
 		store,
 	)
+	chapaSvc.SetLearnerNotifier(learnerNotifSvc)
+	arifpaySvc.SetLearnerNotifier(learnerNotifSvc)
 
 	// Team management service
 	teamSvc := team.NewService(
@@ -398,6 +403,7 @@ func main() {
 		analyticsDB,
 		rbacSvc,
 		videoEngagementSvc,
+		learnerNotifSvc,
 	)
 
 	logger.Info("Starting server", "port", cfg.Port)

db/query/lms_progress.sql

@@ -131,6 +131,30 @@ INSERT INTO lms_user_lesson_progress (user_id, lesson_id)
 ON CONFLICT (user_id, lesson_id)
     DO NOTHING;
 
+-- name: HasUserCompletedModule :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_module_progress
+    WHERE user_id = $1
+      AND module_id = $2
+) AS completed;
+
+-- name: HasUserCompletedCourse :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_course_progress
+    WHERE user_id = $1
+      AND course_id = $2
+) AS completed;
+
+-- name: HasUserCompletedProgram :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_program_progress
+    WHERE user_id = $1
+      AND program_id = $2
+) AS completed;
+
 -- name: InsertUserModuleProgress :exec
 INSERT INTO lms_user_module_progress (user_id, module_id)
     VALUES ($1, $2)

db/query/subscriptions.sql

@@ -166,6 +166,21 @@ JOIN subscription_plans sp ON sp.id = us.plan_id
 WHERE us.status = 'ACTIVE'
   AND us.expires_at <= CURRENT_TIMESTAMP;
 
+-- name: ListLearnEnglishSubscriptionsExpiringInSevenDays :many
+SELECT
+    us.id,
+    us.user_id,
+    us.plan_id,
+    us.expires_at,
+    sp.name AS plan_name,
+    sp.category AS plan_category
+FROM user_subscriptions us
+JOIN subscription_plans sp ON sp.id = us.plan_id
+WHERE us.status = 'ACTIVE'
+  AND us.expires_at > CURRENT_TIMESTAMP
+  AND sp.category = 'LEARN_ENGLISH'
+  AND us.expires_at::date = (CURRENT_DATE + INTERVAL '7 days')::date;
+
 -- name: GetExpiringSubscriptions :many
 SELECT 
     us.*,

gen/db/lms_progress.sql.go

@@ -795,6 +795,69 @@ func (q *Queries) GetPreviousProgram(ctx context.Context, id int64) (Program, er
 	return i, err
 }
 
+const HasUserCompletedCourse = `-- name: HasUserCompletedCourse :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_course_progress
+    WHERE user_id = $1
+      AND course_id = $2
+) AS completed
+`
+
+type HasUserCompletedCourseParams struct {
+	UserID   int64 `json:"user_id"`
+	CourseID int64 `json:"course_id"`
+}
+
+func (q *Queries) HasUserCompletedCourse(ctx context.Context, arg HasUserCompletedCourseParams) (bool, error) {
+	row := q.db.QueryRow(ctx, HasUserCompletedCourse, arg.UserID, arg.CourseID)
+	var completed bool
+	err := row.Scan(&completed)
+	return completed, err
+}
+
+const HasUserCompletedModule = `-- name: HasUserCompletedModule :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_module_progress
+    WHERE user_id = $1
+      AND module_id = $2
+) AS completed
+`
+
+type HasUserCompletedModuleParams struct {
+	UserID   int64 `json:"user_id"`
+	ModuleID int64 `json:"module_id"`
+}
+
+func (q *Queries) HasUserCompletedModule(ctx context.Context, arg HasUserCompletedModuleParams) (bool, error) {
+	row := q.db.QueryRow(ctx, HasUserCompletedModule, arg.UserID, arg.ModuleID)
+	var completed bool
+	err := row.Scan(&completed)
+	return completed, err
+}
+
+const HasUserCompletedProgram = `-- name: HasUserCompletedProgram :one
+SELECT EXISTS(
+    SELECT 1
+    FROM lms_user_program_progress
+    WHERE user_id = $1
+      AND program_id = $2
+) AS completed
+`
+
+type HasUserCompletedProgramParams struct {
+	UserID    int64 `json:"user_id"`
+	ProgramID int64 `json:"program_id"`
+}
+
+func (q *Queries) HasUserCompletedProgram(ctx context.Context, arg HasUserCompletedProgramParams) (bool, error) {
+	row := q.db.QueryRow(ctx, HasUserCompletedProgram, arg.UserID, arg.ProgramID)
+	var completed bool
+	err := row.Scan(&completed)
+	return completed, err
+}
+
 const InsertUserCourseProgress = `-- name: InsertUserCourseProgress :exec
 INSERT INTO lms_user_course_progress (user_id, course_id)
     VALUES ($1, $2)

gen/db/subscriptions.sql.go

@@ -628,6 +628,58 @@ func (q *Queries) ListActiveSubscriptionPlans(ctx context.Context) ([]Subscripti
 	return items, nil
 }
 
+const ListLearnEnglishSubscriptionsExpiringInSevenDays = `-- name: ListLearnEnglishSubscriptionsExpiringInSevenDays :many
+SELECT
+    us.id,
+    us.user_id,
+    us.plan_id,
+    us.expires_at,
+    sp.name AS plan_name,
+    sp.category AS plan_category
+FROM user_subscriptions us
+JOIN subscription_plans sp ON sp.id = us.plan_id
+WHERE us.status = 'ACTIVE'
+  AND us.expires_at > CURRENT_TIMESTAMP
+  AND sp.category = 'LEARN_ENGLISH'
+  AND us.expires_at::date = (CURRENT_DATE + INTERVAL '7 days')::date
+`
+
+type ListLearnEnglishSubscriptionsExpiringInSevenDaysRow struct {
+	ID           int64              `json:"id"`
+	UserID       int64              `json:"user_id"`
+	PlanID       int64              `json:"plan_id"`
+	ExpiresAt    pgtype.Timestamptz `json:"expires_at"`
+	PlanName     string             `json:"plan_name"`
+	PlanCategory string             `json:"plan_category"`
+}
+
+func (q *Queries) ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx context.Context) ([]ListLearnEnglishSubscriptionsExpiringInSevenDaysRow, error) {
+	rows, err := q.db.Query(ctx, ListLearnEnglishSubscriptionsExpiringInSevenDays)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []ListLearnEnglishSubscriptionsExpiringInSevenDaysRow
+	for rows.Next() {
+		var i ListLearnEnglishSubscriptionsExpiringInSevenDaysRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.UserID,
+			&i.PlanID,
+			&i.ExpiresAt,
+			&i.PlanName,
+			&i.PlanCategory,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const ListSubscriptionDisplayStatusesByUserIDs = `-- name: ListSubscriptionDisplayStatusesByUserIDs :many
 WITH input AS (
     SELECT unnest($1::bigint[])::bigint AS user_id

internal/config/config.go

@@ -147,6 +147,8 @@ type Config struct {
 	AccountDeletionPurgeBatchSize  int32
 	PaymentExpiryWorkerEnabled              bool
 	PaymentExpiryWorkerInterval             time.Duration
+	SubscriptionExpiryReminderWorkerEnabled bool
+	SubscriptionExpiryReminderWorkerInterval time.Duration
 	InactiveSubModuleContentPurgeEnabled   bool
 	InactiveSubModuleContentPurgeInterval  time.Duration
 	InactiveSubModuleContentRetentionDays  int
@@ -611,6 +613,25 @@ func (c *Config) loadEnv() error {
 		}
 	}
 
+	subscriptionExpiryReminderEnabled := strings.TrimSpace(os.Getenv("SUBSCRIPTION_EXPIRY_REMINDER_WORKER_ENABLED"))
+	if subscriptionExpiryReminderEnabled == "" {
+		c.SubscriptionExpiryReminderWorkerEnabled = true
+	} else {
+		c.SubscriptionExpiryReminderWorkerEnabled = subscriptionExpiryReminderEnabled == "true" || subscriptionExpiryReminderEnabled == "1"
+	}
+
+	subscriptionExpiryReminderInterval := strings.TrimSpace(os.Getenv("SUBSCRIPTION_EXPIRY_REMINDER_WORKER_INTERVAL"))
+	if subscriptionExpiryReminderInterval == "" {
+		c.SubscriptionExpiryReminderWorkerInterval = 24 * time.Hour
+	} else {
+		interval, err := time.ParseDuration(subscriptionExpiryReminderInterval)
+		if err != nil || interval <= 0 {
+			c.SubscriptionExpiryReminderWorkerInterval = 24 * time.Hour
+		} else {
+			c.SubscriptionExpiryReminderWorkerInterval = interval
+		}
+	}
+
 	// Hard-delete inactive submodule lessons / practices / capstones after a retention period
 	inactiveContentPurge := strings.TrimSpace(os.Getenv("INACTIVE_SUBMODULE_CONTENT_PURGE_ENABLED"))
 	if inactiveContentPurge == "" {

internal/domain/auth.go

@@ -26,6 +26,7 @@ type LoginSuccess struct {
 	UserId       int64
 	Role         Role
 	RfToken      string
+	IsNewAccount bool
 }
 
 type LoginRequest struct {

internal/domain/lms_progress_events.go

@@ -0,0 +1,14 @@
+package domain
+
+// LMSCompletionMilestone is a newly completed LMS entity for learner notifications.
+type LMSCompletionMilestone struct {
+	ID   int64
+	Name string
+}
+
+// LMSPracticeCompletionResult reports rollup milestones reached after a practice completion.
+type LMSPracticeCompletionResult struct {
+	ModuleCompleted  *LMSCompletionMilestone
+	CourseCompleted  *LMSCompletionMilestone
+	ProgramCompleted *LMSCompletionMilestone
+}

internal/domain/notification.go

@@ -32,6 +32,11 @@ const (
 	NOTIFICATION_TYPE_TEAM_MEMBER_CREATED    NotificationType = "team_member_created"
 	NOTIFICATION_TYPE_USER_DELETED           NotificationType = "user_deleted"
 	NOTIFICATION_TYPE_SYSTEM_ALERT           NotificationType = "system_alert"
+	NOTIFICATION_TYPE_USER_WELCOME           NotificationType = "user_welcome"
+	NOTIFICATION_TYPE_MODULE_COMPLETED       NotificationType = "module_completed"
+	NOTIFICATION_TYPE_COURSE_COMPLETED       NotificationType = "course_completed"
+	NOTIFICATION_TYPE_PROGRAM_COMPLETED      NotificationType = "program_completed"
+	NOTIFICATION_TYPE_SUBSCRIPTION_EXPIRING  NotificationType = "subscription_expiring"
 
 	NotificationRecieverSideAdmin         NotificationRecieverSide = "admin"
 	NotificationRecieverSideCustomer      NotificationRecieverSide = "customer"

internal/domain/subscriptions.go

@@ -12,6 +12,13 @@ const (
 	SubscriptionCategoryDuolingo     SubscriptionCategory = "DUOLINGO"
 )
 
+// SubscriptionExpiryReminder is a Learn English subscription expiring in seven days.
+type SubscriptionExpiryReminder struct {
+	UserID    int64
+	PlanName  string
+	ExpiresAt time.Time
+}
+
 // CategorySubscriptionGateDisabled skips subscription enforcement on learner-facing routes (temporary).
 var CategorySubscriptionGateDisabled = true
 

internal/ports/subscriptions.go

@@ -27,4 +27,5 @@ type SubscriptionStore interface {
 	UpdateSubscriptionStatus(ctx context.Context, id int64, status string) error
 	UpdateAutoRenew(ctx context.Context, id int64, autoRenew bool) error
 	ExtendSubscription(ctx context.Context, id int64, newExpiresAt time.Time) error
+	ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx context.Context) ([]domain.SubscriptionExpiryReminder, error)
 }

internal/repository/lms_progress_tx.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 
 	dbgen "Yimaru-Backend/gen/db"
+	"Yimaru-Backend/internal/domain"
 	"github.com/jackc/pgx/v5"
 )
 
@@ -34,7 +35,7 @@ func (s *Store) CompleteLessonForUser(ctx context.Context, userID, lessonID int6
 		return err
 	}
 
-	if err := s.cascadeLMSCompletion(ctx, q, userID, &mod.ID, crs.ID, crs.ProgramID); err != nil {
+	if _, err := s.cascadeLMSCompletion(ctx, q, userID, &mod.ID, crs.ID, crs.ProgramID); err != nil {
 		return err
 	}
 
@@ -46,10 +47,11 @@ func (s *Store) CompleteLessonForUser(ctx context.Context, userID, lessonID int6
 
 // CompletePracticeForUser records practice completion and cascades practice-based
 // completion upward when all published practices in scope are complete.
-func (s *Store) CompletePracticeForUser(ctx context.Context, userID, questionSetID int64) error {
+func (s *Store) CompletePracticeForUser(ctx context.Context, userID, questionSetID int64) (domain.LMSPracticeCompletionResult, error) {
+	var empty domain.LMSPracticeCompletionResult
 	q, tx, err := s.BeginTx(ctx)
 	if err != nil {
-		return fmt.Errorf("begin tx: %w", err)
+		return empty, fmt.Errorf("begin tx: %w", err)
 	}
 	defer func() { _ = tx.Rollback(ctx) }()
 
@@ -57,7 +59,7 @@ func (s *Store) CompletePracticeForUser(ctx context.Context, userID, questionSet
 		UserID:        userID,
 		QuestionSetID: questionSetID,
 	}); err != nil {
-		return err
+		return empty, err
 	}
 
 	scope, err := q.GetPracticeScopeByQuestionSetID(ctx, questionSetID)
@@ -65,11 +67,11 @@ func (s *Store) CompletePracticeForUser(ctx context.Context, userID, questionSet
 		if errors.Is(err, pgx.ErrNoRows) {
 			// Exam-prep practices are not in lms_practices; completion is tracked in user_practice_progress only.
 			if err := tx.Commit(ctx); err != nil {
-				return fmt.Errorf("commit: %w", err)
+				return empty, fmt.Errorf("commit: %w", err)
 			}
-			return nil
+			return empty, nil
 		}
-		return err
+		return empty, err
 	}
 	var (
 		moduleID *int64
@@ -81,133 +83,177 @@ func (s *Store) CompletePracticeForUser(ctx context.Context, userID, questionSet
 		moduleID = &mid
 		mod, err := q.GetModuleByID(ctx, mid)
 		if err != nil {
-			return err
+			return empty, err
 		}
 		courseID = mod.CourseID
 	case scope.LessonID.Valid:
 		lesson, err := q.GetLessonByID(ctx, scope.LessonID.Int64)
 		if err != nil {
-			return err
+			return empty, err
 		}
 		mid := lesson.ModuleID
 		moduleID = &mid
 		mod, err := q.GetModuleByID(ctx, mid)
 		if err != nil {
-			return err
+			return empty, err
 		}
 		courseID = mod.CourseID
 	case scope.CourseID.Valid:
 		courseID = scope.CourseID.Int64
 	default:
-		return fmt.Errorf("practice %d is not linked to lesson/module/course", questionSetID)
+		return empty, fmt.Errorf("practice %d is not linked to lesson/module/course", questionSetID)
 	}
 
 	crs, err := q.GetCourseByID(ctx, courseID)
 	if err != nil {
-		return err
+		return empty, err
 	}
 
-	if err := s.cascadeLMSCompletion(ctx, q, userID, moduleID, crs.ID, crs.ProgramID); err != nil {
+	result, err := s.cascadeLMSCompletion(ctx, q, userID, moduleID, crs.ID, crs.ProgramID)
-		return err
+	if err != nil {
+		return empty, err
 	}
 
 	if err := tx.Commit(ctx); err != nil {
-		return fmt.Errorf("commit: %w", err)
+		return empty, fmt.Errorf("commit: %w", err)
 	}
-	return nil
+	return result, nil
 }
 
-func (s *Store) cascadeLMSCompletion(ctx context.Context, q *dbgen.Queries, userID int64, moduleID *int64, courseID, programID int64) error {
+func (s *Store) cascadeLMSCompletion(ctx context.Context, q *dbgen.Queries, userID int64, moduleID *int64, courseID, programID int64) (domain.LMSPracticeCompletionResult, error) {
+	var result domain.LMSPracticeCompletionResult
 	if moduleID != nil {
 		modulePracticesTotal, err := q.CountPublishedPracticesInModule(ctx, toPgInt8(moduleID))
 		if err != nil {
-			return err
+			return result, err
 		}
 		modulePracticesDone, err := q.CountUserCompletedPublishedPracticesInModule(ctx, dbgen.CountUserCompletedPublishedPracticesInModuleParams{
 			ModuleID: toPgInt8(moduleID),
 			UserID:   userID,
 		})
 		if err != nil {
-			return err
+			return result, err
 		}
 
 		modulePracticesComplete := modulePracticesTotal > 0 && modulePracticesDone >= modulePracticesTotal
 		if !modulePracticesComplete {
-			return nil
+			return result, nil
 		}
 
+		alreadyDone, err := q.HasUserCompletedModule(ctx, dbgen.HasUserCompletedModuleParams{
+			UserID:   userID,
+			ModuleID: *moduleID,
+		})
+		if err != nil {
+			return result, err
+		}
+		if !alreadyDone {
 			if err := q.InsertUserModuleProgress(ctx, dbgen.InsertUserModuleProgressParams{UserID: userID, ModuleID: *moduleID}); err != nil {
-			return err
+				return result, err
+			}
+			mod, err := q.GetModuleByID(ctx, *moduleID)
+			if err != nil {
+				return result, err
+			}
+			result.ModuleCompleted = &domain.LMSCompletionMilestone{ID: mod.ID, Name: mod.Name}
 		}
 	}
 
 	nMods, err := q.CountModulesInCourse(ctx, courseID)
 	if err != nil {
-		return err
+		return result, err
 	}
 	nDoneMods, err := q.CountUserCompletedModulesInCourse(ctx, dbgen.CountUserCompletedModulesInCourseParams{
 		CourseID: courseID,
 		UserID:   userID,
 	})
 	if err != nil {
-		return err
+		return result, err
 	}
 
 	coursePracticesTotal, err := q.CountPublishedPracticesInCourse(ctx, toPgInt8(&courseID))
 	if err != nil {
-		return err
+		return result, err
 	}
 	coursePracticesDone, err := q.CountUserCompletedPublishedPracticesInCourse(ctx, dbgen.CountUserCompletedPublishedPracticesInCourseParams{
 		CourseID: toPgInt8(&courseID),
 		UserID:   userID,
 	})
 	if err != nil {
-		return err
+		return result, err
 	}
 
 	courseModulesComplete := nMods > 0 && nDoneMods >= nMods
 	coursePracticesComplete := coursePracticesTotal > 0 && coursePracticesDone >= coursePracticesTotal
 	if !courseModulesComplete || !coursePracticesComplete {
-		return nil
+		return result, nil
 	}
 
+	alreadyDone, err := q.HasUserCompletedCourse(ctx, dbgen.HasUserCompletedCourseParams{
+		UserID:   userID,
+		CourseID: courseID,
+	})
+	if err != nil {
+		return result, err
+	}
+	if !alreadyDone {
 		if err := q.InsertUserCourseProgress(ctx, dbgen.InsertUserCourseProgressParams{UserID: userID, CourseID: courseID}); err != nil {
-		return err
+			return result, err
+		}
+		crs, err := q.GetCourseByID(ctx, courseID)
+		if err != nil {
+			return result, err
+		}
+		result.CourseCompleted = &domain.LMSCompletionMilestone{ID: crs.ID, Name: crs.Name}
 	}
 
 	nCr, err := q.CountCoursesInProgram(ctx, programID)
 	if err != nil {
-		return err
+		return result, err
 	}
 	nCrDone, err := q.CountUserCompletedCoursesInProgram(ctx, dbgen.CountUserCompletedCoursesInProgramParams{
 		ProgramID: programID,
 		UserID:    userID,
 	})
 	if err != nil {
-		return err
+		return result, err
 	}
 
 	programPracticesTotal, err := q.CountPublishedPracticesInProgram(ctx, programID)
 	if err != nil {
-		return err
+		return result, err
 	}
 	programPracticesDone, err := q.CountUserCompletedPublishedPracticesInProgram(ctx, dbgen.CountUserCompletedPublishedPracticesInProgramParams{
 		ProgramID: programID,
 		UserID:    userID,
 	})
 	if err != nil {
-		return err
+		return result, err
 	}
 
 	programCoursesComplete := nCr > 0 && nCrDone >= nCr
 	programPracticesComplete := programPracticesTotal > 0 && programPracticesDone >= programPracticesTotal
 	if !programCoursesComplete || !programPracticesComplete {
-		return nil
+		return result, nil
 	}
 
+	alreadyDone, err = q.HasUserCompletedProgram(ctx, dbgen.HasUserCompletedProgramParams{
+		UserID:    userID,
+		ProgramID: programID,
+	})
+	if err != nil {
+		return result, err
+	}
+	if !alreadyDone {
 		if err := q.InsertUserProgramProgress(ctx, dbgen.InsertUserProgramProgressParams{UserID: userID, ProgramID: programID}); err != nil {
-		return err
+			return result, err
+		}
+		prog, err := q.GetProgramByID(ctx, programID)
+		if err != nil {
+			return result, err
+		}
+		result.ProgramCompleted = &domain.LMSCompletionMilestone{ID: prog.ID, Name: prog.Name}
 	}
 
-	return nil
+	return result, nil
 }

internal/repository/subscriptions.go

@@ -330,3 +330,19 @@ func optionalBool(b *bool) pgtype.Bool {
 func float64Ptr(f float64) *float64 {
 	return &f
 }
+
+func (s *Store) ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx context.Context) ([]domain.SubscriptionExpiryReminder, error) {
+	rows, err := s.queries.ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx)
+	if err != nil {
+		return nil, err
+	}
+	out := make([]domain.SubscriptionExpiryReminder, 0, len(rows))
+	for _, row := range rows {
+		out = append(out, domain.SubscriptionExpiryReminder{
+			UserID:    row.UserID,
+			PlanName:  row.PlanName,
+			ExpiresAt: row.ExpiresAt.Time,
+		})
+	}
+	return out, nil
+}

internal/services/arifpay/service.go

@@ -16,6 +16,7 @@ import (
 	"Yimaru-Backend/internal/config"
 	"Yimaru-Backend/internal/domain"
 	"Yimaru-Backend/internal/ports"
+	learnernotifications "Yimaru-Backend/internal/services/learnernotifications"
 
 	"github.com/google/uuid"
 )
@@ -32,6 +33,7 @@ type ArifpayService struct {
 	httpClient        *http.Client
 	paymentStore      ports.PaymentStore
 	subscriptionStore ports.SubscriptionStore
+	learnerNotifier   *learnernotifications.Service
 }
 
 func NewArifpayService(
@@ -48,6 +50,16 @@ func NewArifpayService(
 	}
 }
 
+func (s *ArifpayService) SetLearnerNotifier(notifier *learnernotifications.Service) {
+	s.learnerNotifier = notifier
+}
+
+func (s *ArifpayService) notifyLearnPackageSubscribed(userID int64, plan *domain.SubscriptionPlan) {
+	if s.learnerNotifier != nil && plan != nil {
+		s.learnerNotifier.MaybeNotifyLearnPackageSubscribed(userID, plan.Category, plan.Name)
+	}
+}
+
 // InitiateSubscriptionPayment creates a payment session for a subscription plan
 func (s *ArifpayService) InitiateSubscriptionPayment(ctx context.Context, userID int64, req domain.InitiateSubscriptionPaymentRequest) (*domain.InitiateSubscriptionPaymentResponse, error) {
 	// Get the subscription plan
@@ -280,6 +292,7 @@ func (s *ArifpayService) ProcessPaymentWebhook(ctx context.Context, req domain.W
 		if err := s.paymentStore.LinkPaymentToSubscription(ctx, payment.ID, subscription.ID); err != nil {
 			return fmt.Errorf("failed to link payment to subscription: %w", err)
 		}
+		s.notifyLearnPackageSubscribed(payment.UserID, plan)
 	}
 
 	return nil
@@ -1035,6 +1048,7 @@ func (s *ArifpayService) VerifyDirectPaymentOTP(ctx context.Context, userID int6
 			})
 			if err == nil {
 				s.paymentStore.LinkPaymentToSubscription(ctx, payment.ID, subscription.ID)
+				s.notifyLearnPackageSubscribed(payment.UserID, plan)
 			}
 		}
 	}

internal/services/authentication/apple.go

@@ -162,6 +162,7 @@ func (s *Service) LoginWithApple(
 
 	var user domain.User
 	var err error
+	isNewAccount := false
 
 	user, err = s.userStore.GetUserByAppleID(ctx, aUser.ID)
 	if err != nil {
@@ -183,6 +184,7 @@ func (s *Service) LoginWithApple(
 			if err != nil {
 				return domain.LoginSuccess{}, err
 			}
+			isNewAccount = true
 		} else {
 			if err := s.userStore.LinkAppleAccount(ctx, user.ID, aUser.ID, aUser.VerifiedEmail); err != nil {
 				return domain.LoginSuccess{}, err
@@ -227,5 +229,6 @@ func (s *Service) LoginWithApple(
 		UserId:       user.ID,
 		Role:         user.Role,
 		RfToken:      refreshToken,
+		IsNewAccount: isNewAccount,
 	}, nil
 }

internal/services/authentication/google.go

@@ -145,6 +145,7 @@ func (s *Service) LoginWithGoogle(
 
 	var user domain.User
 	var err error
+	isNewAccount := false
 
 	user, err = s.userStore.GetUserByGoogleID(ctx, gUser.ID)
 	if err != nil {
@@ -162,6 +163,7 @@ func (s *Service) LoginWithGoogle(
 			if err != nil {
 				return domain.LoginSuccess{}, err
 			}
+			isNewAccount = true
 		} else {
 			if err := s.userStore.LinkGoogleAccount(ctx, user.ID, gUser.ID); err != nil {
 				return domain.LoginSuccess{}, err
@@ -206,6 +208,7 @@ func (s *Service) LoginWithGoogle(
 		UserId:       user.ID,
 		Role:         user.Role,
 		RfToken:      refreshToken,
+		IsNewAccount: isNewAccount,
 	}, nil
 }
 

internal/services/chapa/service.go

@@ -19,6 +19,7 @@ import (
 	"Yimaru-Backend/internal/config"
 	"Yimaru-Backend/internal/domain"
 	"Yimaru-Backend/internal/ports"
+	learnernotifications "Yimaru-Backend/internal/services/learnernotifications"
 
 	"github.com/google/uuid"
 )
@@ -37,6 +38,7 @@ type Service struct {
 	paymentStore      ports.PaymentStore
 	subscriptionStore ports.SubscriptionStore
 	userStore         ports.UserStore
+	learnerNotifier   *learnernotifications.Service
 }
 
 func NewService(
@@ -55,6 +57,10 @@ func NewService(
 	}
 }
 
+func (s *Service) SetLearnerNotifier(notifier *learnernotifications.Service) {
+	s.learnerNotifier = notifier
+}
+
 func (s *Service) configured() error {
 	if s.cfg.CHAPA_SECRET_KEY == "" {
 		return ErrChapaNotConfigured
@@ -388,6 +394,10 @@ func (s *Service) activateSubscription(ctx context.Context, payment *domain.Paym
 		return fmt.Errorf("failed to link payment to subscription: %w", err)
 	}
 
+	if s.learnerNotifier != nil {
+		s.learnerNotifier.MaybeNotifyLearnPackageSubscribed(payment.UserID, plan.Category, plan.Name)
+	}
+
 	return nil
 }
 

internal/services/learnernotifications/service.go

@@ -0,0 +1,108 @@
+package learnernotifications
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"Yimaru-Backend/internal/domain"
+	notificationservice "Yimaru-Backend/internal/services/notification"
+)
+
+// Service sends learner-facing in-app and push notifications.
+type Service struct {
+	notifications *notificationservice.Service
+}
+
+func New(notifications *notificationservice.Service) *Service {
+	return &Service{notifications: notifications}
+}
+
+func (s *Service) NotifyWelcome(userID int64) {
+	s.send(userID, domain.NOTIFICATION_TYPE_USER_WELCOME, domain.NotificationLevelSuccess,
+		"Welcome to Yimaru Academy",
+		"Your account is ready. Start learning and track your progress across programs and courses.")
+}
+
+func (s *Service) NotifyModuleCompleted(userID int64, moduleName string) {
+	s.send(userID, domain.NOTIFICATION_TYPE_MODULE_COMPLETED, domain.NotificationLevelSuccess,
+		"Module completed",
+		fmt.Sprintf("Great work! You completed the module \"%s\".", moduleName))
+}
+
+func (s *Service) NotifyCourseCompleted(userID int64, courseName string) {
+	s.send(userID, domain.NOTIFICATION_TYPE_COURSE_COMPLETED, domain.NotificationLevelSuccess,
+		"Course completed",
+		fmt.Sprintf("Congratulations! You completed the course \"%s\".", courseName))
+}
+
+func (s *Service) NotifyProgramCompleted(userID int64, programName string) {
+	s.send(userID, domain.NOTIFICATION_TYPE_PROGRAM_COMPLETED, domain.NotificationLevelSuccess,
+		"Program completed",
+		fmt.Sprintf("Amazing achievement! You completed the program \"%s\".", programName))
+}
+
+func (s *Service) NotifyLearnPackageSubscribed(userID int64, planName string) {
+	s.send(userID, domain.NOTIFICATION_TYPE_SUBSCRIPTION_ACTIVATED, domain.NotificationLevelSuccess,
+		"Subscription active",
+		fmt.Sprintf("Your \"%s\" Learn English package is now active. Enjoy your learning journey!", planName))
+}
+
+func (s *Service) NotifyLearnPackageExpiringSoon(userID int64, planName string, expiresAt time.Time) {
+	s.send(userID, domain.NOTIFICATION_TYPE_SUBSCRIPTION_EXPIRING, domain.NotificationLevelWarning,
+		"Subscription expiring soon",
+		fmt.Sprintf("Your \"%s\" package expires on %s. Renew to keep uninterrupted access.", planName, expiresAt.Format("Jan 2, 2006")))
+}
+
+func (s *Service) MaybeNotifyLearnPackageSubscribed(userID int64, planCategory, planName string) {
+	if planCategory == string(domain.SubscriptionCategoryLearnEnglish) {
+		s.NotifyLearnPackageSubscribed(userID, planName)
+	}
+}
+
+func (s *Service) NotifyLMSPracticeMilestones(userID int64, result domain.LMSPracticeCompletionResult) {
+	if result.ModuleCompleted != nil {
+		s.NotifyModuleCompleted(userID, result.ModuleCompleted.Name)
+	}
+	if result.CourseCompleted != nil {
+		s.NotifyCourseCompleted(userID, result.CourseCompleted.Name)
+	}
+	if result.ProgramCompleted != nil {
+		s.NotifyProgramCompleted(userID, result.ProgramCompleted.Name)
+	}
+}
+
+func (s *Service) SendLearnPackageExpiryReminders(reminders []domain.SubscriptionExpiryReminder) {
+	for _, r := range reminders {
+		s.NotifyLearnPackageExpiringSoon(r.UserID, r.PlanName, r.ExpiresAt)
+	}
+}
+
+func (s *Service) send(userID int64, notifType domain.NotificationType, level domain.NotificationLevel, headline, message string) {
+	if s == nil || s.notifications == nil || userID == 0 {
+		return
+	}
+	go func() {
+		ctx := context.Background()
+		for _, channel := range []domain.DeliveryChannel{
+			domain.DeliveryChannelInApp,
+			domain.DeliveryChannelPush,
+		} {
+			notification := &domain.Notification{
+				RecipientID:     userID,
+				ReceiverType:    domain.ReceiverTypeUser,
+				Type:            notifType,
+				Level:           level,
+				Reciever:        domain.NotificationRecieverSideCustomer,
+				DeliveryChannel: channel,
+				DeliveryStatus:  domain.DeliveryStatusPending,
+				IsRead:          false,
+				Payload: domain.NotificationPayload{
+					Headline: headline,
+					Message:  message,
+				},
+			}
+			_ = s.notifications.SendNotification(ctx, notification)
+		}
+	}()
+}

internal/services/lmsprogress/service.go

@@ -33,7 +33,7 @@ func (s *Service) CompleteLessonForUser(ctx context.Context, userID, lessonID in
 }
 
 // CompletePracticeForUser records practice completion and rolls up to module, course, and program when applicable.
-func (s *Service) CompletePracticeForUser(ctx context.Context, userID, questionSetID int64) error {
+func (s *Service) CompletePracticeForUser(ctx context.Context, userID, questionSetID int64) (domain.LMSPracticeCompletionResult, error) {
 	return s.store.CompletePracticeForUser(ctx, userID, questionSetID)
 }
 

internal/services/subscriptions/service.go

@@ -194,6 +194,10 @@ func (s *Service) RenewSubscription(ctx context.Context, subscriptionID int64) (
 	return s.GetSubscriptionByID(ctx, subscriptionID)
 }
 
+func (s *Service) ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx context.Context) ([]domain.SubscriptionExpiryReminder, error) {
+	return s.store.ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx)
+}
+
 // Helper functions
 func strPtr(s string) *string {
 	return &s

internal/web_server/app.go

@@ -15,6 +15,7 @@ import (
 	"Yimaru-Backend/internal/services/examprep"
 	"Yimaru-Backend/internal/services/faqs"
 	issuereporting "Yimaru-Backend/internal/services/issue_reporting"
+	"Yimaru-Backend/internal/services/learnernotifications"
 	"Yimaru-Backend/internal/services/lessons"
 	"Yimaru-Backend/internal/services/lmsprogress"
 	minioservice "Yimaru-Backend/internal/services/minio"
@@ -96,6 +97,8 @@ type App struct {
 	videoEngagementSvc *videoengagement.Service
 	stopPurgeWorker                    context.CancelFunc
 	stopPaymentExpiryWorker            context.CancelFunc
+	stopSubscriptionExpiryReminderWorker context.CancelFunc
+	learnerNotifSvc                    *learnernotifications.Service
 }
 
 func NewApp(
@@ -138,6 +141,7 @@ func NewApp(
 	analyticsDB *dbgen.Queries,
 	rbacSvc *rbacservice.Service,
 	videoEngagementSvc *videoengagement.Service,
+	learnerNotifSvc *learnernotifications.Service,
 ) *App {
 	app := fiber.New(fiber.Config{
 		CaseSensitive:            true,
@@ -199,6 +203,7 @@ func NewApp(
 		analyticsDB:        analyticsDB,
 		rbacSvc:            rbacSvc,
 		videoEngagementSvc: videoEngagementSvc,
+		learnerNotifSvc:    learnerNotifSvc,
 	}
 
 	s.initAppRoutes()
@@ -211,6 +216,8 @@ func (a *App) Run() error {
 	defer a.stopAccountDeletionPurgeWorker()
 	a.startPaymentExpiryWorker()
 	defer a.stopPaymentExpiryWorkerFunc()
+	a.startSubscriptionExpiryReminderWorker()
+	defer a.stopSubscriptionExpiryReminderWorkerFunc()
 	return a.fiber.Listen(fmt.Sprintf(":%d", a.port))
 }
 
@@ -327,3 +334,61 @@ func (a *App) runPaymentExpiryOnce(ctx context.Context) {
 		a.logger.Info("payment expiry run completed", "expired_count", expiredCount)
 	}
 }
+
+func (a *App) startSubscriptionExpiryReminderWorker() {
+	if a.cfg == nil || !a.cfg.SubscriptionExpiryReminderWorkerEnabled {
+		a.logger.Info("subscription expiry reminder worker disabled")
+		return
+	}
+	if a.learnerNotifSvc == nil || a.subscriptionsSvc == nil {
+		a.logger.Info("subscription expiry reminder worker skipped (missing services)")
+		return
+	}
+
+	interval := a.cfg.SubscriptionExpiryReminderWorkerInterval
+	if interval <= 0 {
+		interval = 24 * time.Hour
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	a.stopSubscriptionExpiryReminderWorker = cancel
+
+	a.logger.Info("starting subscription expiry reminder worker", "interval", interval.String())
+
+	go func() {
+		a.runSubscriptionExpiryReminderOnce(ctx)
+
+		ticker := time.NewTicker(interval)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-ctx.Done():
+				a.logger.Info("subscription expiry reminder worker stopped")
+				return
+			case <-ticker.C:
+				a.runSubscriptionExpiryReminderOnce(ctx)
+			}
+		}
+	}()
+}
+
+func (a *App) stopSubscriptionExpiryReminderWorkerFunc() {
+	if a.stopSubscriptionExpiryReminderWorker != nil {
+		a.stopSubscriptionExpiryReminderWorker()
+	}
+}
+
+func (a *App) runSubscriptionExpiryReminderOnce(ctx context.Context) {
+	reminders, err := a.subscriptionsSvc.ListLearnEnglishSubscriptionsExpiringInSevenDays(ctx)
+	if err != nil {
+		a.logger.Error("subscription expiry reminder run failed", "error", err)
+		return
+	}
+	if len(reminders) == 0 {
+		return
+	}
+
+	a.learnerNotifSvc.SendLearnPackageExpiryReminders(reminders)
+	a.logger.Info("subscription expiry reminder run completed", "notified_count", len(reminders))
+}

internal/web_server/handlers/auth_handler.go

@@ -61,6 +61,7 @@ func (h *Handler) GoogleAndroidLogin(c *fiber.Ctx) error {
 			Error:   err.Error(),
 		})
 	}
+	h.notifyWelcomeIfNewAccount(loginRes)
 
 	// Issue backend JWT
 	accessToken, err := jwtutil.CreateJwt(
@@ -132,6 +133,7 @@ func (h *Handler) AppleLogin(c *fiber.Ctx) error {
 			Error:   err.Error(),
 		})
 	}
+	h.notifyWelcomeIfNewAccount(loginRes)
 
 	accessToken, err := jwtutil.CreateJwt(
 		loginRes.UserId,
@@ -204,6 +206,7 @@ func (h *Handler) GoogleCallback(c *fiber.Ctx) error {
 			Error:   err.Error(),
 		})
 	}
+	h.notifyWelcomeIfNewAccount(loginRes)
 
 	accessToken, err := jwtutil.CreateJwt(
 		loginRes.UserId,

internal/web_server/handlers/handlers.go

@@ -18,6 +18,7 @@ import (
 	"Yimaru-Backend/internal/services/examprep"
 	"Yimaru-Backend/internal/services/faqs"
 	issuereporting "Yimaru-Backend/internal/services/issue_reporting"
+	"Yimaru-Backend/internal/services/learnernotifications"
 	"Yimaru-Backend/internal/services/lessons"
 	"Yimaru-Backend/internal/services/lmsprogress"
 	minioservice "Yimaru-Backend/internal/services/minio"
@@ -72,6 +73,7 @@ type Handler struct {
 	logger            *slog.Logger
 	settingSvc        *settings.Service
 	notificationSvc   *notificationservice.Service
+	learnerNotifSvc   *learnernotifications.Service
 	userSvc           *user.Service
 	transactionSvc    *transaction.Service
 	recommendationSvc recommendation.RecommendationService
@@ -114,6 +116,7 @@ func New(
 	logger *slog.Logger,
 	settingSvc *settings.Service,
 	notificationSvc *notificationservice.Service,
+	learnerNotifSvc *learnernotifications.Service,
 	validator *customvalidator.CustomValidator,
 	recommendationSvc recommendation.RecommendationService,
 	userSvc *user.Service,
@@ -155,6 +158,7 @@ func New(
 		logger:            logger,
 		settingSvc:        settingSvc,
 		notificationSvc:   notificationSvc,
+		learnerNotifSvc:   learnerNotifSvc,
 		validator:         validator,
 		userSvc:           userSvc,
 		transactionSvc:    transactionSvc,
@@ -176,6 +180,12 @@ func New(
 	}
 }
 
+func (h *Handler) notifyWelcomeIfNewAccount(loginRes domain.LoginSuccess) {
+	if loginRes.IsNewAccount && h.learnerNotifSvc != nil {
+		h.learnerNotifSvc.NotifyWelcome(loginRes.UserId)
+	}
+}
+
 func (h *Handler) sendInAppNotification(recipientID int64, notifType domain.NotificationType, headline, message string) {
 	go func() {
 		notification := &domain.Notification{

internal/web_server/handlers/questions.go

@@ -1714,12 +1714,16 @@ func (h *Handler) CompletePractice(c *fiber.Ctx) error {
 		}
 	}
 
-	if err := h.lmsProgressSvc.CompletePracticeForUser(c.Context(), userID, set.ID); err != nil {
+	result, err := h.lmsProgressSvc.CompletePracticeForUser(c.Context(), userID, set.ID)
+	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
 			Message: "Failed to complete practice",
 			Error:   err.Error(),
 		})
 	}
+	if h.learnerNotifSvc != nil {
+		h.learnerNotifSvc.NotifyLMSPracticeMilestones(userID, result)
+	}
 	return c.JSON(domain.Response{
 		Message: "Practice completed",
 	})

internal/web_server/handlers/subscriptions.go

@@ -352,6 +352,14 @@ func (h *Handler) Subscribe(c *fiber.Ctx) error {
 		})
 	}
 
+	plan, err := h.subscriptionsSvc.GetPlanByID(c.Context(), req.PlanID)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{
+			Message: "Invalid subscription plan",
+			Error:   err.Error(),
+		})
+	}
+
 	sub, err := h.subscriptionsSvc.Subscribe(c.Context(), userID, req.PlanID, req.PaymentReference, req.PaymentMethod)
 	if err != nil {
 		status := fiber.StatusInternalServerError
@@ -363,6 +371,9 @@ func (h *Handler) Subscribe(c *fiber.Ctx) error {
 			Error:   err.Error(),
 		})
 	}
+	if h.learnerNotifSvc != nil {
+		h.learnerNotifSvc.MaybeNotifyLearnPackageSubscribed(userID, plan.Category, plan.Name)
+	}
 
 	return c.Status(fiber.StatusCreated).JSON(domain.Response{
 		Message: "Subscription created successfully",

internal/web_server/handlers/user.go

@@ -1135,7 +1135,7 @@ func (h *Handler) RegisterUser(c *fiber.Ctx) error {
 	}
 	user.OtpMedium = medium
 
-	_, err = h.userSvc.RegisterUser(c.Context(), user)
+	created, err := h.userSvc.RegisterUser(c.Context(), user)
 	if err != nil {
 		h.mongoLoggerSvc.Error("Failed to register user",
 			zap.String("email", req.Email),
@@ -1150,6 +1150,9 @@ func (h *Handler) RegisterUser(c *fiber.Ctx) error {
 			Error:   err.Error(),
 		})
 	}
+	if h.learnerNotifSvc != nil {
+		h.learnerNotifSvc.NotifyWelcome(created.ID)
+	}
 
 	return c.Status(fiber.StatusOK).JSON(domain.Response{
 		Message: "Registration successful",

internal/web_server/routes.go

@@ -34,6 +34,7 @@ func (a *App) initAppRoutes() {
 		a.logger,
 		a.settingSvc,
 		a.NotidicationStore,
+		a.learnerNotifSvc,
 		a.validator,
 		a.recommendationSvc,
 		a.userSvc,