package sql

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

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

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

// NewUserRepository creates a new UserRepository.
func NewUserRepository(db *gorm.DB, cfg *config.Config) domain.UserRepository {
	return &userRepository{
		BaseRepositoryImpl: NewBaseRepositoryImpl[domain.User](db, cfg),
		db:                 db,
		tracer:             otel.Tracer("user.repository"),
	}
}

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

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

// ListByRole lists users by role
func (r *userRepository) ListByRole(ctx context.Context, role domain.UserRole) ([]domain.User, error) {
	ctx, span := r.tracer.Start(ctx, "ListByRole")
	defer span.End()
	var users []domain.User
	if err := r.db.WithContext(ctx).Where("role = ?", role).Find(&users).Error; err != nil {
		return nil, err
	}
	return users, nil
}