internal/postgres/user.go

@@ -272,3 +272,47 @@ func GetUserFavoriteNodeWithPagination(ctx context.Context, db *gorm.DB, anthrov
 
 	return &graphModels.FavoriteList{Posts: favoritePosts}, nil
 }
+
+func GetUserTagNodeWitRelationToFavedPosts(ctx context.Context, db *gorm.DB, anthroveUserID models.AnthroveUserID) ([]graphModels.TagsWithFrequency, error) {
+	var userFavorites []pgModels.UserFavorite
+	err := db.WithContext(ctx).Where("user_id = ?", string(anthroveUserID)).Find(&userFavorites).Error
+	if err != nil {
+		log.WithFields(log.Fields{
+			"anthrove_user_id": anthroveUserID,
+		}).Error("database: failed to get user favorites")
+		return nil, err
+	}
+
+	tagFrequency := make(map[string]int)
+	for _, userFavorite := range userFavorites {
+		var postTags []pgModels.Tag
+		err = db.WithContext(ctx).Model(&pgModels.Post{}).Where("id = ?", userFavorite.PostID).Association("Tags").Find(&postTags)
+		if err != nil {
+			log.WithFields(log.Fields{
+				"post_id": userFavorite.PostID,
+			}).Error("database: failed to get post tags")
+			return nil, err
+		}
+
+		for _, tag := range postTags {
+			tagFrequency[tag.Name]++
+		}
+	}
+
+	var tagsWithFrequency []graphModels.TagsWithFrequency
+	for tagName, frequency := range tagFrequency {
+		tagsWithFrequency = append(tagsWithFrequency, graphModels.TagsWithFrequency{
+			Frequency: int64(frequency),
+			Tags: graphModels.AnthroveTag{
+				Name: tagName,
+			},
+		})
+	}
+
+	log.WithFields(log.Fields{
+		"anthrove_user_id": anthroveUserID,
+		"tag_amount":       len(tagsWithFrequency),
+	}).Trace("database: got user tag node with relation to faved posts")
+
+	return tagsWithFrequency, nil
+}

pkg/database/postgres.go

@@ -126,8 +126,7 @@ func (p *postgresqlConnection) GetUserFavoritePostsWithPagination(ctx context.Co
 }
 
 func (p *postgresqlConnection) GetUserTagsTroughFavedPosts(ctx context.Context, anthroveUserID models.AnthroveUserID) ([]graphModels.TagsWithFrequency, error) {
-	//TODO implement me
-	panic("implement me")
+	return postgres.GetUserTagNodeWitRelationToFavedPosts(ctx, p.db, anthroveUserID)
 }
 
 func (p *postgresqlConnection) GetAllTags(ctx context.Context) ([]graphModels.TagsWithFrequency, error) {