Merge pull request 'Refactor AI summarizer client initialization to include MongoDB manager and add statistics endpoint' (#36) from TM-602 into develop

Reviewed-on: https://repo.ravanertebat.com/TM/tm_back/pulls/36

cmd/web/bootstrap/bootstrap.go

@@ -290,23 +290,25 @@ func InitFileStore(mongoManager *mongo.ConnectionManager, log logger.Logger) (*f
 }
 
 // InitAISummarizerClient initializes the AI summarizer HTTP client for on-demand summarization
-func InitAISummarizerClient(conf AISummarizerConfig, log logger.Logger) *ai_summarizer.Client {
+func InitAISummarizerClient(conf AISummarizerConfig, mongoManager *mongo.ConnectionManager, log logger.Logger) *ai_summarizer.Client {
 	if conf.APIBaseURL == "" {
 		log.Warn("AI Summarizer API base URL not configured, on-demand summarization will be unavailable", map[string]interface{}{})
 		return nil
 	}
 
+	translationCounter := mongo.NewCounter(mongoManager)
 	cfg := &ai_summarizer.Config{
-		APIBaseURL:     conf.APIBaseURL,
-		APITimeout:     conf.APITimeout,
-		APIRetryCount:  conf.APIRetryCount,
-		APIRetryDelay:  conf.APIRetryDelay,
-		MinioEndpoint:  conf.MinioEndpoint,
-		MinioAccessKey: conf.MinioAccessKey,
-		MinioSecretKey: conf.MinioSecretKey,
-		MinioUseSSL:    conf.MinioUseSSL,
-		MinioRegion:    conf.MinioRegion,
-		MinioBucket:    conf.MinioBucket,
+		APIBaseURL:              conf.APIBaseURL,
+		APITimeout:              conf.APITimeout,
+		APIRetryCount:           conf.APIRetryCount,
+		APIRetryDelay:           conf.APIRetryDelay,
+		MinioEndpoint:           conf.MinioEndpoint,
+		MinioAccessKey:          conf.MinioAccessKey,
+		MinioSecretKey:          conf.MinioSecretKey,
+		MinioUseSSL:             conf.MinioUseSSL,
+		MinioRegion:             conf.MinioRegion,
+		MinioBucket:             conf.MinioBucket,
+		OnSuccessfulTranslation: mongo.AITranslationSuccessCallback(translationCounter),
 	}
 
 	client, err := ai_summarizer.NewClient(cfg, log)

cmd/web/main.go

@@ -168,7 +168,7 @@ func main() {
 	var aiSummarizerClient tender.AISummarizerClient
 	var aiSummarizerStorage tender.AISummarizerStorage
 
-	if c := bootstrap.InitAISummarizerClient(conf.AISummarizer, logger); c != nil {
+	if c := bootstrap.InitAISummarizerClient(conf.AISummarizer, mongoManager, logger); c != nil {
 		aiSummarizerClient = c
 	}
 	if s := bootstrap.InitAISummarizerStorage(conf.AISummarizer, logger); s != nil {

cmd/web/router/routes.go

@@ -222,6 +222,7 @@ func RegisterAdminRoutes(e *echo.Echo, userHandler *user.Handler, companyHandler
 		dashboardGP.GET("/notice-types", dashboardHandler.NoticeTypes)
 		dashboardGP.GET("/closing-soon", dashboardHandler.ClosingSoon)
 		dashboardGP.GET("/recent", dashboardHandler.Recent)
+		dashboardGP.GET("/statistics", dashboardHandler.Statistics)
 	}
 }
 

cmd/worker/bootstrap/bootstrap.go

@@ -196,6 +196,7 @@ func InitWorker(config Config, mongoManager *mongo.ConnectionManager, appLogger
 	// Initialize translation backfill worker for configured languages
 	if aiClient != nil {
 		targetLanguages := parseTranslationLanguages(config.AISummarizer)
+		translationSuccessCounter := mongo.NewCounter(mongoManager)
 		scheduler.AddJob(schedule.Job{
 			Name: "Tender Translation Worker Job",
 			Func: func() {
@@ -205,6 +206,7 @@ func InitWorker(config Config, mongoManager *mongo.ConnectionManager, appLogger
 					tenderRepo,
 					aiClient,
 					aiStorage,
+					translationSuccessCounter,
 					targetLanguages,
 					config.Worker.TranslationBatchSize,
 				)
@@ -247,17 +249,19 @@ func InitWorker(config Config, mongoManager *mongo.ConnectionManager, appLogger
 }
 
 // InitAISummarizerClient initializes the AI summarizer HTTP client used by worker jobs.
-func InitAISummarizerClient(conf AISummarizerConfig, log logger.Logger) *ai_summarizer.Client {
+func InitAISummarizerClient(conf AISummarizerConfig, mongoManager *mongo.ConnectionManager, log logger.Logger) *ai_summarizer.Client {
 	if conf.APIBaseURL == "" {
 		log.Warn("AI Summarizer API base URL not configured, translation worker will be unavailable", map[string]interface{}{})
 		return nil
 	}
 
+	translationCounter := mongo.NewCounter(mongoManager)
 	cfg := &ai_summarizer.Config{
-		APIBaseURL:    conf.APIBaseURL,
-		APITimeout:    conf.APITimeout,
-		APIRetryCount: conf.APIRetryCount,
-		APIRetryDelay: conf.APIRetryDelay,
+		APIBaseURL:              conf.APIBaseURL,
+		APITimeout:              conf.APITimeout,
+		APIRetryCount:           conf.APIRetryCount,
+		APIRetryDelay:           conf.APIRetryDelay,
+		OnSuccessfulTranslation: mongo.AITranslationSuccessCallback(translationCounter),
 	}
 
 	client, err := ai_summarizer.NewClient(cfg, log)

cmd/worker/main.go

@@ -44,7 +44,7 @@ func main() {
 	}
 
 	// Initialize AI summarizer client (translation + document summarization workers)
-	aiSummarizerClient := bootstrap.InitAISummarizerClient(config.AISummarizer, appLogger)
+	aiSummarizerClient := bootstrap.InitAISummarizerClient(config.AISummarizer, mongoManager, appLogger)
 	aiSummarizerStorage := bootstrap.InitAISummarizerStorage(config.AISummarizer, appLogger)
 
 	// Initialize Worker

cmd/worker/workers/translation.go

@@ -13,13 +13,14 @@ import (
 // TranslationWorker backfills missing tender translations using the AI pipeline
 // and on-demand translate API. Results are persisted by the AI service in MinIO only.
 type TranslationWorker struct {
-	Mongo            *mongo.ConnectionManager
-	Logger           logger.Logger
-	TenderRepo       tender.TenderRepository
-	AIClient         *ai_summarizer.Client
-	AIStorage        *ai_summarizer.StorageClient
-	TargetLanguages  []string
-	BatchSize        int
+	Mongo                    *mongo.ConnectionManager
+	Logger                   logger.Logger
+	TenderRepo               tender.TenderRepository
+	AIClient                 *ai_summarizer.Client
+	AIStorage                *ai_summarizer.StorageClient
+	TranslationSuccessCounter *mongo.Counter
+	TargetLanguages          []string
+	BatchSize                int
 }
 
 // NewTranslationWorker creates a translation worker for the given target languages.
@@ -29,6 +30,7 @@ func NewTranslationWorker(
 	tenderRepo tender.TenderRepository,
 	aiClient *ai_summarizer.Client,
 	aiStorage *ai_summarizer.StorageClient,
+	translationSuccessCounter *mongo.Counter,
 	targetLanguages []string,
 	batchSize int,
 ) *TranslationWorker {
@@ -53,13 +55,14 @@ func NewTranslationWorker(
 	}
 
 	return &TranslationWorker{
-		Mongo:           mongo,
-		Logger:          logger,
-		TenderRepo:      tenderRepo,
-		AIClient:        aiClient,
-		AIStorage:       aiStorage,
-		TargetLanguages: langs,
-		BatchSize:       batchSize,
+		Mongo:                     mongo,
+		Logger:                    logger,
+		TenderRepo:                tenderRepo,
+		AIClient:                  aiClient,
+		AIStorage:                 aiStorage,
+		TranslationSuccessCounter: translationSuccessCounter,
+		TargetLanguages:           langs,
+		BatchSize:                 batchSize,
 	}
 }
 
@@ -77,6 +80,8 @@ func (w *TranslationWorker) Run() {
 		"batch_size":       w.BatchSize,
 	})
 
+	startCount := w.getSuccessfulTranslationCount(mongo.AITranslationSuccessCounterKeyDailyJob)
+
 	if _, err := w.AIClient.TriggerPipelineTranslate(context.Background(), w.TargetLanguages); err != nil {
 		w.Logger.Warn("Failed to trigger AI pipeline translate (continuing with per-tender sync)", map[string]interface{}{
 			"target_languages": w.TargetLanguages,
@@ -88,11 +93,36 @@ func (w *TranslationWorker) Run() {
 		w.runForLanguage(language)
 	}
 
+	endCount := w.getSuccessfulTranslationCount(mongo.AITranslationSuccessCounterKeyDailyJob)
+	totalCount := w.getSuccessfulTranslationCount(mongo.AITranslationSuccessCounterKey)
+	runCount := endCount - startCount
+	if runCount < 0 {
+		runCount = 0
+	}
+
 	w.Logger.Info("Translation worker completed", map[string]interface{}{
-		"target_languages": w.TargetLanguages,
+		"target_languages":                               w.TargetLanguages,
+		"successful_ai_translation_requests_run":         runCount,
+		"successful_ai_translation_requests_daily_job":   endCount,
+		"successful_ai_translation_requests_total":       totalCount,
 	})
 }
 
+func (w *TranslationWorker) getSuccessfulTranslationCount(key string) int64 {
+	if w.TranslationSuccessCounter == nil {
+		return 0
+	}
+	count, err := w.TranslationSuccessCounter.Get(context.Background(), key)
+	if err != nil {
+		w.Logger.Warn("Failed to read AI translation success counter", map[string]interface{}{
+			"counter_key": key,
+			"error":       err.Error(),
+		})
+		return 0
+	}
+	return count
+}
+
 func (w *TranslationWorker) runForLanguage(language string) {
 	skip := 0
 	for {
@@ -210,6 +240,7 @@ func (w *TranslationWorker) resolveTranslation(t *tender.Tender, language string
 		Title:               t.Title,
 		Description:         t.Description,
 		Language:            language,
+		RequestSource:       ai_summarizer.TranslationRequestSourceDailyJob,
 	})
 	if apiErr != nil {
 		return "", "", "api", apiErr

internal/dashboard/entity.go

@@ -85,3 +85,24 @@ type RecentItem struct {
 	CreatedAt       int64  `json:"created_at"`
 	PublicationDate int64  `json:"publication_date"`
 }
+
+// StatisticsReportResponse powers the statistics and charts report.
+type StatisticsReportResponse struct {
+	Days        int                      `json:"days"`
+	GeneratedAt int64                    `json:"generated_at"`
+	Daily       StatisticsDailySeries    `json:"daily"`
+	Totals      StatisticsLifetimeTotals `json:"totals"`
+}
+
+// StatisticsDailySeries contains per-day chart series.
+type StatisticsDailySeries struct {
+	ScrapedTED       []TrendPoint `json:"scraped_ted"`
+	ScrapedDocuments []TrendPoint `json:"scraped_documents"`
+	TranslatedNotices []TrendPoint `json:"translated_notices"`
+}
+
+// StatisticsLifetimeTotals contains all-time totals.
+type StatisticsLifetimeTotals struct {
+	ScrapedDocuments  int64 `json:"scraped_documents"`
+	TranslatedTenders int64 `json:"translated_tenders"`
+}

internal/dashboard/form.go

@@ -27,3 +27,8 @@ type RecentQuery struct {
 	Limit  int    `query:"limit"`
 	Cursor string `query:"cursor"`
 }
+
+// StatisticsQuery binds query params for GET /dashboard/statistics.
+type StatisticsQuery struct {
+	Days int `query:"days"`
+}

internal/dashboard/handler.go

@@ -161,6 +161,30 @@ func (h *Handler) Recent(c echo.Context) error {
 	return response.Success(c, out, "Recent tenders retrieved successfully")
 }
 
+// Statistics returns scraping and translation statistics for charts.
+// @Summary Dashboard statistics report
+// @Description Daily and lifetime statistics for TED scraping, document scraping, and AI translation
+// @Tags Admin-Dashboard
+// @Produce json
+// @Param days query int false "Days back for daily series (default 14, max 90)"
+// @Success 200 {object} response.APIResponse{data=StatisticsReportResponse}
+// @Failure 500 {object} response.APIResponse
+// @Router /admin/v1/dashboard/statistics [get]
+// @Security BearerAuth
+func (h *Handler) Statistics(c echo.Context) error {
+	query := StatisticsQuery{
+		Days: parseIntQuery(c, "days", 0),
+	}
+
+	out, err := h.service.Statistics(c.Request().Context(), query)
+	if err != nil {
+		return response.InternalServerError(c, "Failed to load dashboard statistics")
+	}
+
+	setPrivateCache(c, 60)
+	return response.Success(c, out, "Dashboard statistics retrieved successfully")
+}
+
 func parseIntQuery(c echo.Context, name string, fallback int) int {
 	raw := c.QueryParam(name)
 	if raw == "" {

internal/dashboard/repository.go

@@ -23,18 +23,23 @@ type Repository interface {
 	NoticeTypes(ctx context.Context) (*NoticeTypesResponse, error)
 	ClosingSoon(ctx context.Context, limit int, windowSec int64) ([]ClosingSoonItem, error)
 	Recent(ctx context.Context, limit int, cursor string) ([]RecentItem, *string, error)
+	Statistics(ctx context.Context, days int, startUnix int64) (*StatisticsReportResponse, error)
 }
 
 type repository struct {
-	ormRepo orm.Repository[tender.Tender]
-	logger  logger.Logger
+	ormRepo        orm.Repository[tender.Tender]
+	mongoManager   *orm.ConnectionManager
+	metricsCounter *orm.Counter
+	logger         logger.Logger
 }
 
 // NewRepository creates a dashboard repository backed by the tenders collection.
 func NewRepository(mongoManager *orm.ConnectionManager, log logger.Logger) Repository {
 	return &repository{
-		ormRepo: orm.NewRepository[tender.Tender](mongoManager.GetCollection(tenderCollectionName()), log),
-		logger:  log,
+		ormRepo:        orm.NewRepository[tender.Tender](mongoManager.GetCollection(tenderCollectionName()), log),
+		mongoManager:   mongoManager,
+		metricsCounter: orm.NewCounter(mongoManager),
+		logger:         log,
 	}
 }
 

internal/dashboard/service.go

@@ -25,6 +25,7 @@ type Service interface {
 	NoticeTypes(ctx context.Context) (*NoticeTypesResponse, error)
 	ClosingSoon(ctx context.Context, query ClosingSoonQuery) (*ClosingSoonResponse, error)
 	Recent(ctx context.Context, query RecentQuery) (*RecentResponse, error)
+	Statistics(ctx context.Context, query StatisticsQuery) (*StatisticsReportResponse, error)
 }
 
 type service struct {
@@ -157,6 +158,25 @@ func (s *service) Recent(ctx context.Context, query RecentQuery) (*RecentRespons
 	}, nil
 }
 
+func (s *service) Statistics(ctx context.Context, query StatisticsQuery) (*StatisticsReportResponse, error) {
+	days := trendDays(query.Days)
+	startUnix := trendStartUnix(days)
+
+	s.logger.Info("Fetching dashboard statistics report", map[string]interface{}{
+		"days": days,
+	})
+
+	out, err := s.repo.Statistics(ctx, days, startUnix)
+	if err != nil {
+		s.logger.Error("Failed to fetch dashboard statistics report", map[string]interface{}{
+			"error": err.Error(),
+		})
+		return nil, fmt.Errorf("dashboard statistics: %w", err)
+	}
+
+	return out, nil
+}
+
 func closingWindowHours(hours int) int {
 	if hours <= 0 {
 		return defaultClosingWindowHours

internal/dashboard/statistics_repository.go

@@ -0,0 +1,189 @@
+package dashboard
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"tm/internal/notice"
+	orm "tm/pkg/mongo"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	mongodriver "go.mongodb.org/mongo-driver/v2/mongo"
+)
+
+const noticesCollectionName = "notices"
+
+func (r *repository) Statistics(ctx context.Context, days int, startUnix int64) (*StatisticsReportResponse, error) {
+	now := time.Now().UTC()
+	endDay := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
+	startDay := endDay.AddDate(0, 0, -(days - 1))
+
+	scrapedTED, err := r.dailyCountByTimestamp(ctx, noticesCollectionName, bson.M{
+		"source": notice.TenderSourceTEDScraper,
+		"processing_metadata.scraped_at": bson.M{"$gte": startUnix, "$gt": 0},
+	}, "processing_metadata.scraped_at")
+	if err != nil {
+		return nil, fmt.Errorf("scraped ted per day: %w", err)
+	}
+
+	scrapedDocuments, err := r.scrapedDocumentsPerDay(ctx, startUnix)
+	if err != nil {
+		return nil, fmt.Errorf("scraped documents per day: %w", err)
+	}
+
+	translatedNotices, err := r.translatedNoticesPerDay(ctx, startDay, endDay)
+	if err != nil {
+		return nil, fmt.Errorf("translated notices per day: %w", err)
+	}
+
+	totalDocuments, err := r.totalScrapedDocuments(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("total scraped documents: %w", err)
+	}
+
+	totalTranslated, err := r.metricsCounter.Get(ctx, orm.AITranslationSuccessCounterKey)
+	if err != nil {
+		return nil, fmt.Errorf("total translated tenders: %w", err)
+	}
+
+	return &StatisticsReportResponse{
+		Days:        days,
+		GeneratedAt: now.Unix(),
+		Daily: StatisticsDailySeries{
+			ScrapedTED:        fillTrendSeries(days, scrapedTED),
+			ScrapedDocuments:  fillTrendSeries(days, scrapedDocuments),
+			TranslatedNotices: fillTrendSeries(days, translatedNotices),
+		},
+		Totals: StatisticsLifetimeTotals{
+			ScrapedDocuments:  totalDocuments,
+			TranslatedTenders: totalTranslated,
+		},
+	}, nil
+}
+
+func (r *repository) dailyCountByTimestamp(ctx context.Context, collection string, match bson.M, timestampField string) (map[string]int64, error) {
+	pipeline := mongodriver.Pipeline{
+		{{Key: "$match", Value: match}},
+		{{Key: "$addFields", Value: bson.M{
+			"metric_ts": normalizeTimestampExpr(timestampField),
+		}}},
+		{{Key: "$group", Value: bson.M{
+			"_id": bson.M{
+				"$dateToString": bson.M{
+					"format":   "%Y-%m-%d",
+					"date":     bson.M{"$toDate": bson.M{"$multiply": bson.A{"$metric_ts", 1000}}},
+					"timezone": "UTC",
+				},
+			},
+			"count": bson.M{"$sum": 1},
+		}}},
+	}
+
+	cursor, err := r.mongoManager.GetCollection(collection).Aggregate(ctx, pipeline)
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	return decodeDailyCounts(ctx, cursor)
+}
+
+func (r *repository) scrapedDocumentsPerDay(ctx context.Context, startUnix int64) (map[string]int64, error) {
+	pipeline := mongodriver.Pipeline{
+		{{Key: "$match", Value: bson.M{
+			"processing_metadata.documents_scraped": true,
+			"scraped_documents":                   bson.M{"$exists": true, "$ne": bson.A{}},
+		}}},
+		{{Key: "$unwind", Value: "$scraped_documents"}},
+		{{Key: "$addFields", Value: bson.M{
+			"metric_ts": bson.M{
+				"$cond": bson.A{
+					bson.M{"$gt": bson.A{"$scraped_documents.scraped_at", 0}},
+					"$scraped_documents.scraped_at",
+					"$processing_metadata.documents_scraped_at",
+				},
+			},
+		}}},
+		{{Key: "$match", Value: bson.M{
+			"metric_ts": bson.M{"$gte": startUnix, "$gt": 0},
+		}}},
+		{{Key: "$addFields", Value: bson.M{
+			"metric_ts": normalizeTimestampExpr("metric_ts"),
+		}}},
+		{{Key: "$group", Value: bson.M{
+			"_id": bson.M{
+				"$dateToString": bson.M{
+					"format":   "%Y-%m-%d",
+					"date":     bson.M{"$toDate": bson.M{"$multiply": bson.A{"$metric_ts", 1000}}},
+					"timezone": "UTC",
+				},
+			},
+			"count": bson.M{"$sum": 1},
+		}}},
+	}
+
+	cursor, err := r.mongoManager.GetCollection(tenderCollectionName()).Aggregate(ctx, pipeline)
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	return decodeDailyCounts(ctx, cursor)
+}
+
+func (r *repository) translatedNoticesPerDay(ctx context.Context, startDay, endDay time.Time) (map[string]int64, error) {
+	return r.metricsCounter.GetDailyCounts(ctx, startDay, endDay)
+}
+
+func (r *repository) totalScrapedDocuments(ctx context.Context) (int64, error) {
+	pipeline := mongodriver.Pipeline{
+		{{Key: "$match", Value: bson.M{
+			"processing_metadata.documents_scraped": true,
+			"scraped_documents":                   bson.M{"$exists": true, "$ne": bson.A{}},
+		}}},
+		{{Key: "$project", Value: bson.M{
+			"doc_count": bson.M{"$size": "$scraped_documents"},
+		}}},
+		{{Key: "$group", Value: bson.M{
+			"_id":   nil,
+			"total": bson.M{"$sum": "$doc_count"},
+		}}},
+	}
+
+	cursor, err := r.mongoManager.GetCollection(tenderCollectionName()).Aggregate(ctx, pipeline)
+	if err != nil {
+		return 0, err
+	}
+	defer cursor.Close(ctx)
+
+	if !cursor.Next(ctx) {
+		return 0, nil
+	}
+
+	var row bson.M
+	if err := cursor.Decode(&row); err != nil {
+		return 0, err
+	}
+
+	return aggregateCount(row, "total"), nil
+}
+
+func decodeDailyCounts(ctx context.Context, cursor *mongodriver.Cursor) (map[string]int64, error) {
+	counts := make(map[string]int64)
+	for cursor.Next(ctx) {
+		var row bson.M
+		if err := cursor.Decode(&row); err != nil {
+			return nil, err
+		}
+		date, ok := row["_id"].(string)
+		if !ok || date == "" {
+			continue
+		}
+		counts[date] = aggregateCount(row, "count")
+	}
+	if err := cursor.Err(); err != nil {
+		return nil, err
+	}
+	return counts, nil
+}

internal/tender/service.go

@@ -1476,7 +1476,7 @@ func (s *tenderService) TriggerAITranslate(ctx context.Context, id, language str
 		return nil, fmt.Errorf("tender has no contract folder ID")
 	}
 
-	title, description, err := s.resolveTranslation(ctx, t, targetLanguage)
+	title, description, fromAPI, err := s.resolveTranslation(ctx, t, targetLanguage, ai_summarizer.TranslationRequestSourceManualTrigger)
 	if err != nil {
 		s.logger.Error("AI translation failed", map[string]interface{}{
 			"tender_id": id,
@@ -1487,6 +1487,14 @@ func (s *tenderService) TriggerAITranslate(ctx context.Context, id, language str
 		return nil, fmt.Errorf("AI translation request failed: %w", err)
 	}
 
+	if fromAPI {
+		s.logger.Info("Manual AI translation request succeeded", map[string]interface{}{
+			"tender_id": id,
+			"notice_id": t.NoticePublicationID,
+			"language":  targetLanguage,
+		})
+	}
+
 	return s.buildAITranslateResponse(t, targetLanguage, title, description), nil
 }
 
@@ -1500,11 +1508,11 @@ func (s *tenderService) buildAITranslateResponse(t *Tender, language, title, des
 	}
 }
 
-func (s *tenderService) resolveTranslation(ctx context.Context, t *Tender, language string) (string, string, error) {
+func (s *tenderService) resolveTranslation(ctx context.Context, t *Tender, language, requestSource string) (string, string, bool, error) {
 	if s.aiSummarizerStorage != nil {
 		stored, err := s.aiSummarizerStorage.GetTranslationFromStorage(ctx, t.ContractFolderID, t.NoticePublicationID, language)
 		if err == nil {
-			return stored.Title, stored.Description, nil
+			return stored.Title, stored.Description, false, nil
 		}
 		if !errors.Is(err, ai_summarizer.ErrTranslationNotReady) &&
 			!errors.Is(err, ai_summarizer.ErrObjectNotFound) &&
@@ -1523,11 +1531,12 @@ func (s *tenderService) resolveTranslation(ctx context.Context, t *Tender, langu
 		Title:               t.Title,
 		Description:         t.Description,
 		Language:            language,
+		RequestSource:       requestSource,
 	})
 	if err != nil {
-		return "", "", err
+		return "", "", false, err
 	}
-	return resp.TranslatedTitle, resp.TranslatedDescription, nil
+	return resp.TranslatedTitle, resp.TranslatedDescription, true, nil
 }
 
 func (s *tenderService) pickResponseLanguage(language *string) string {

pkg/ai_summarizer/client.go

@@ -107,7 +107,7 @@ func (c *Client) FetchTranslationOnDemand(ctx context.Context, reqBody Translate
 			}
 		}
 
-		resp, err := c.doTranslatePost(ctx, url, jsonBody)
+		resp, err := c.doTranslatePost(ctx, url, jsonBody, reqBody.RequestSource)
 		if err != nil {
 			lastErr = err
 			c.logger.Error("AI translate request failed", map[string]interface{}{
@@ -216,7 +216,7 @@ func (c *Client) doPost(ctx context.Context, url string, jsonBody []byte) (*Summ
 }
 
 // doTranslatePost performs a single translation POST request and parses the response.
-func (c *Client) doTranslatePost(ctx context.Context, url string, jsonBody []byte) (*TranslateResponse, error) {
+func (c *Client) doTranslatePost(ctx context.Context, url string, jsonBody []byte, requestSource string) (*TranslateResponse, error) {
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(jsonBody))
 	if err != nil {
 		return nil, fmt.Errorf("ai_summarizer: failed to create translation request: %w", err)
@@ -253,6 +253,17 @@ func (c *Client) doTranslatePost(ctx context.Context, url string, jsonBody []byt
 		"language":              result.Language,
 	})
 
+	if c.config.OnSuccessfulTranslation != nil {
+		if err := c.config.OnSuccessfulTranslation(ctx, requestSource); err != nil {
+			c.logger.Warn("Failed to increment AI translation success counter", map[string]interface{}{
+				"notice_publication_id": result.NoticePublicationID,
+				"language":              result.Language,
+				"request_source":        requestSource,
+				"error":                 err.Error(),
+			})
+		}
+	}
+
 	return result, nil
 }
 

pkg/ai_summarizer/config.go

@@ -1,6 +1,7 @@
 package ai_summarizer
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"time"
@@ -15,6 +16,10 @@ type Config struct {
 	APIRetryCount int           // Number of retry attempts for failed API requests
 	APIRetryDelay time.Duration // Delay between retry attempts
 
+	// OnSuccessfulTranslation is called after a successful POST /ai/translate request.
+	// source identifies the caller (daily_job or manual_trigger).
+	OnSuccessfulTranslation func(ctx context.Context, source string) error
+
 	// MinIO storage settings
 	MinioEndpoint  string        // MinIO endpoint, e.g. "ai-host:9000"
 	MinioAccessKey string        // MinIO access key ID

pkg/ai_summarizer/entities.go

@@ -109,8 +109,14 @@ type TranslateRequest struct {
 	Title               string `json:"title"`
 	Description         string `json:"description"`
 	Language            string `json:"language"`
+	RequestSource       string `json:"-"` // internal: daily_job | manual_trigger
 }
 
+const (
+	TranslationRequestSourceDailyJob      = "daily_job"
+	TranslationRequestSourceManualTrigger = "manual_trigger"
+)
+
 // TranslateResponse represents the translation payload from POST /ai/translate.
 type TranslateResponse struct {
 	ContractFolderID      string `json:"contract_folder_id"`

pkg/mongo/counter.go

@@ -0,0 +1,130 @@
+package mongo
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	mongodriver "go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+)
+
+const (
+	metricsCountersCollection                   = "metrics_counters"
+	AITranslationSuccessCounterKey              = "ai_translation_successful_requests"
+	AITranslationSuccessCounterKeyDailyJob      = "ai_translation_successful_requests_daily_job"
+	AITranslationSuccessCounterKeyManualTrigger = "ai_translation_successful_requests_manual_trigger"
+)
+
+// Counter provides atomic increment/read operations for named metrics stored in MongoDB.
+type Counter struct {
+	mongo *ConnectionManager
+}
+
+// NewCounter creates a counter backed by the metrics_counters collection.
+func NewCounter(mongo *ConnectionManager) *Counter {
+	return &Counter{mongo: mongo}
+}
+
+// Increment atomically increments the counter identified by key and returns the new value.
+func (c *Counter) Increment(ctx context.Context, key string) (int64, error) {
+	if key == "" {
+		return 0, fmt.Errorf("mongo counter: key is required")
+	}
+
+	var res struct {
+		Count int64 `bson:"count"`
+	}
+	err := c.mongo.GetCollection(metricsCountersCollection).FindOneAndUpdate(
+		ctx,
+		bson.M{"_id": key},
+		bson.M{
+			"$inc":         bson.M{"count": 1},
+			"$set":         bson.M{"updated_at": time.Now().Unix()},
+			"$setOnInsert": bson.M{"_id": key},
+		},
+		options.FindOneAndUpdate().SetUpsert(true).SetReturnDocument(options.After),
+	).Decode(&res)
+	if err != nil {
+		return 0, fmt.Errorf("mongo counter increment %q: %w", key, err)
+	}
+
+	return res.Count, nil
+}
+
+// Get returns the current value of the counter identified by key (0 when missing).
+func (c *Counter) Get(ctx context.Context, key string) (int64, error) {
+	if key == "" {
+		return 0, fmt.Errorf("mongo counter: key is required")
+	}
+
+	var doc struct {
+		Count int64 `bson:"count"`
+	}
+	err := c.mongo.GetCollection(metricsCountersCollection).FindOne(ctx, bson.M{"_id": key}).Decode(&doc)
+	if err != nil {
+		if errors.Is(err, mongodriver.ErrNoDocuments) {
+			return 0, nil
+		}
+		return 0, fmt.Errorf("mongo counter get %q: %w", key, err)
+	}
+
+	return doc.Count, nil
+}
+
+// AITranslationSuccessCallback returns a callback that increments successful AI translation counters.
+func AITranslationSuccessCallback(counter *Counter) func(ctx context.Context, source string) error {
+	return func(ctx context.Context, source string) error {
+		if _, err := counter.Increment(ctx, AITranslationSuccessCounterKey); err != nil {
+			return err
+		}
+		if _, err := counter.Increment(ctx, AITranslationSuccessDailyCounterKey(time.Now().UTC())); err != nil {
+			return err
+		}
+		if key := AITranslationSuccessCounterKeyForSource(source); key != "" {
+			_, err := counter.Increment(ctx, key)
+			return err
+		}
+		return nil
+	}
+}
+
+// AITranslationSuccessDailyCounterKey returns the metrics key for successful translations on a given UTC day.
+func AITranslationSuccessDailyCounterKey(day time.Time) string {
+	return AITranslationSuccessCounterKey + "_day:" + day.UTC().Format("2006-01-02")
+}
+
+// GetDailyCounts returns counter values for each UTC day from start through end inclusive.
+func (c *Counter) GetDailyCounts(ctx context.Context, startDay, endDay time.Time) (map[string]int64, error) {
+	startDay = time.Date(startDay.Year(), startDay.Month(), startDay.Day(), 0, 0, 0, 0, time.UTC)
+	endDay = time.Date(endDay.Year(), endDay.Month(), endDay.Day(), 0, 0, 0, 0, time.UTC)
+	if endDay.Before(startDay) {
+		return map[string]int64{}, nil
+	}
+
+	counts := make(map[string]int64)
+	for day := startDay; !day.After(endDay); day = day.AddDate(0, 0, 1) {
+		date := day.Format("2006-01-02")
+		value, err := c.Get(ctx, AITranslationSuccessDailyCounterKey(day))
+		if err != nil {
+			return nil, err
+		}
+		counts[date] = value
+	}
+
+	return counts, nil
+}
+
+// AITranslationSuccessCounterKeyForSource maps a request source to its metrics counter key.
+func AITranslationSuccessCounterKeyForSource(source string) string {
+	switch source {
+	case "daily_job":
+		return AITranslationSuccessCounterKeyDailyJob
+	case "manual_trigger":
+		return AITranslationSuccessCounterKeyManualTrigger
+	default:
+		return ""
+	}
+}