package utils

import (
	"context"
	"fmt"
	"time"

	"gitea.zjmud.xyz/phyer/rbac/config"
	"github.com/go-redis/redis/v8"
)

var (
	RedisClient *redis.Client
	ctx         = context.Background()
)

// InitRedis 初始化 Redis 连接
func InitRedis() error {
	RedisClient = redis.NewClient(&redis.Options{
		Addr:     fmt.Sprintf("%s:%d", config.AppConfig.RedisHost, config.AppConfig.RedisPort),
		Password: config.AppConfig.RedisPassword,
		DB:       config.AppConfig.RedisDB, // 使用默认数据库
	})

	// 测试连接
	_, err := RedisClient.Ping(ctx).Result()
	if err != nil {
		return fmt.Errorf("failed to connect to Redis: %v", err)
	}

	return nil
}

// Set 设置键值对，带过期时间
func Set(key string, value interface{}, expiration time.Duration) error {
	return RedisClient.Set(ctx, key, value, expiration).Err()
}

// Get 获取键值
func Get(key string) (string, error) {
	return RedisClient.Get(ctx, key).Result()
}

// Delete 删除键
func Delete(key string) error {
	return RedisClient.Del(ctx, key).Err()
}

// Exists 检查键是否存在
func Exists(key string) (bool, error) {
	result, err := RedisClient.Exists(ctx, key).Result()
	return result == 1, err
}

// Incr 自增键值
func Incr(key string) (int64, error) {
	return RedisClient.Incr(ctx, key).Result()
}

// Decr 自减键值
func Decr(key string) (int64, error) {
	return RedisClient.Decr(ctx, key).Result()
}

// HSet 设置哈希字段值
func HSet(key string, field string, value interface{}) error {
	return RedisClient.HSet(ctx, key, field, value).Err()
}

// HGet 获取哈希字段值
func HGet(key string, field string) (string, error) {
	return RedisClient.HGet(ctx, key, field).Result()
}

// HGetAll 获取哈希所有字段值
func HGetAll(key string) (map[string]string, error) {
	return RedisClient.HGetAll(ctx, key).Result()
}

// Expire 设置键的过期时间
func Expire(key string, expiration time.Duration) error {
	return RedisClient.Expire(ctx, key, expiration).Err()
}