package sql

import (
	"context"
	"errors"
	"tercul/internal/domain"
	"tercul/internal/platform/config"
	"time"

	"go.opentelemetry.io/otel"
	"go.opentelemetry.io/otel/trace"
	"gorm.io/gorm"
)

type userSessionRepository struct {
	*BaseRepositoryImpl[domain.UserSession]
	db     *gorm.DB
	tracer trace.Tracer
}

// NewUserSessionRepository creates a new UserSessionRepository.
func NewUserSessionRepository(db *gorm.DB, cfg *config.Config) domain.UserSessionRepository {
	return &userSessionRepository{
		BaseRepositoryImpl: NewBaseRepositoryImpl[domain.UserSession](db, cfg),
		db:                 db,
		tracer:             otel.Tracer("user_session.repository"),
	}
}

// GetByToken finds a session by token
func (r *userSessionRepository) GetByToken(ctx context.Context, token string) (*domain.UserSession, error) {
	ctx, span := r.tracer.Start(ctx, "GetByToken")
	defer span.End()
	var session domain.UserSession
	if err := r.db.WithContext(ctx).Where("token = ?", token).First(&session).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, domain.ErrEntityNotFound
		}
		return nil, err
	}
	return &session, nil
}

// GetByUserID finds sessions by user ID
func (r *userSessionRepository) GetByUserID(ctx context.Context, userID uint) ([]domain.UserSession, error) {
	ctx, span := r.tracer.Start(ctx, "GetByUserID")
	defer span.End()
	var sessions []domain.UserSession
	if err := r.db.WithContext(ctx).Where("user_id = ?", userID).Find(&sessions).Error; err != nil {
		return nil, err
	}
	return sessions, nil
}

// DeleteExpired deletes expired sessions
func (r *userSessionRepository) DeleteExpired(ctx context.Context) error {
	ctx, span := r.tracer.Start(ctx, "DeleteExpired")
	defer span.End()
	if err := r.db.WithContext(ctx).Where("expires_at < ?", time.Now()).Delete(&domain.UserSession{}).Error; err != nil {
		return err
	}
	return nil
}