package redisx

import (
	"context"
	"fmt"
	"time"
)

// 工具方法（Del、Expire、TTL、Exists、Scan 等）

func Del(ctx context.Context, keys ...string) error {
	if len(keys) == 0 {
		return fmt.Errorf("no key provided")
	}

	return getClient().Del(ctx, keys...).Err()
}

func Expire(ctx context.Context, key string, ttl time.Duration) (bool, error) {
	return getClient().Expire(ctx, key, ttl).Result()
}

func ExpireAt(ctx context.Context, key string, tm time.Time) (bool, error) {
	return getClient().ExpireAt(ctx, key, tm).Result()
}

func TTL(ctx context.Context, key string) (time.Duration, error) {
	return getClient().TTL(ctx, key).Result()
}

func Exists(ctx context.Context, key string) (bool, error) {
	n, err := getClient().Exists(ctx, key).Result()
	return n > 0, err
}