package cache

import (
	"context"
	"errors"
	"fmt"
	"time"

	"fwh-toolbox-server/cache/redisx"

	"github.com/redis/go-redis/v9"
)

func Init(addr string) {
	opt := redisx.Config{
		Addrs: []string{addr},
		DB:    12,
	}
	redisx.Init(&opt)
}

// ErrNotFound 用于表示缓存未命中
var ErrNotFound = errors.New("cachex: not found")

// helper: compute full key with prefix
func fullKey(prefix, key string) string {
	if prefix == "" {
		return key
	}
	return fmt.Sprintf("%s:%s", prefix, key)
}

// RegisterHitHook / RegisterMissHook: 简单 hook，用户可利用来统计
var (
	hitHook  func(key string)
	missHook func(key string)
)

func RegisterHitHook(fn func(key string)) {
	hitHook = fn
}
func RegisterMissHook(fn func(key string)) {
	missHook = fn
}

// internal helpers to call hooks safely
func onHit(key string) {
	if hitHook != nil {
		go func() { defer func() { recover() }(); hitHook(key) }()
	}
}
func onMiss(key string) {
	if missHook != nil {
		go func() { defer func() { recover() }(); missHook(key) }()
	}
}

/********* 字符串操作 *********/
// Set string value
func Set(ctx context.Context, key string, value interface{}, ttl time.Duration) error {
	return redisx.Set(ctx, key, value, ttl)
}

// Get string value
func Get(ctx context.Context, key string) (string, error) {
	val, err := redisx.Get(ctx, key)
	if err != nil {
		return "", err
	}
	return val, nil
}

func MSet(ctx context.Context, pairs ...interface{}) error {
	return redisx.MSet(ctx, pairs...)
}

func MGet(ctx context.Context, keys ...string) ([]interface{}, error) {
	return redisx.MGet(ctx, keys...)
}

func Incr(ctx context.Context, key string) (int64, error) {
	return redisx.Incr(ctx, key)
}

/********* 哈希操作 *********/

func HSet(ctx context.Context, key string, values ...interface{}) error {
	return redisx.HSet(ctx, key, values...)
}

func HGet(ctx context.Context, key, field string) (string, error) {
	return redisx.HGet(ctx, key, field)
}

func HGetAll(ctx context.Context, key string) (map[string]string, error) {
	return redisx.HGetAll(ctx, key)
}

/********* 列表操作 *********/

func LPush(ctx context.Context, key string, values ...interface{}) error {
	return redisx.LPush(ctx, key, values...)
}

func RPush(ctx context.Context, key string, values ...interface{}) error {
	return redisx.RPush(ctx, key, values...)
}

func LPop(ctx context.Context, key string) (string, error) {
	return redisx.LPop(ctx, key)
}

/********* 集合操作 *********/

func SAdd(ctx context.Context, key string, members ...interface{}) error {
	return redisx.SAdd(ctx, key, members...)
}

func SRem(ctx context.Context, key string, members ...interface{}) error {
	return redisx.SRem(ctx, key, members...)
}

func SMembers(ctx context.Context, key string) ([]string, error) {
	return redisx.SMembers(ctx, key)
}

func SIsMember(ctx context.Context, key string, member interface{}) (bool, error) {
	return redisx.SIsMember(ctx, key, member)
}

/********* 有序集合操作 *********/

func ZAdd(ctx context.Context, key string, members ...redis.Z) error {
	return redisx.ZAdd(ctx, key, members...)
}

func ZRange(ctx context.Context, key string, start, stop int64) ([]string, error) {
	return redisx.ZRange(ctx, key, start, stop)
}

/********* Stream（流）操作 *********/

// 添加消息
func XAdd(ctx context.Context, stream string, values map[string]interface{}) (string, error) {
	return redisx.XAdd(ctx, stream, values)
}

// 读取消息
func XRead(ctx context.Context, streams map[string]string, count int64) ([]redis.XStream, error) {
	return redisx.XRead(ctx, streams, count)
}

// 创建消费者组
func XGroupCreate(ctx context.Context, stream, group, start string) error {
	return redisx.XGroupCreate(ctx, stream, group, start)
}

// 从消费者组读取
func XReadGroup(ctx context.Context, group, consumer string, streams map[string]string, count int64) ([]redis.XStream, error) {
	return redisx.XReadGroup(ctx, group, consumer, streams, count)
}

// 从消费者组读取滞留消息
func XAutoClaim(ctx context.Context, stream string, group string, consumer string, idle time.Duration, count int64) (messages []redis.XMessage, start string, err error) {
	return redisx.XAutoClaim(ctx, stream, group, consumer, idle, count)
}

// 从消费者组读取指定ID的Pending状态信息
func XPendingExtOne(ctx context.Context, stream string, group string, consumer string, id string) (*redis.XPendingExt, error) {
	return redisx.XPendingExtOne(ctx, stream, group, consumer, id)
}

// 确认消息
func XAck(ctx context.Context, stream, group string, ids ...string) error {
	return redisx.XAck(ctx, stream, group, ids...)
}

// 确认同时删除消息
func XAckDel(ctx context.Context, stream, group string, ids ...string) error {
	return redisx.XAckDel(ctx, stream, group, ids...)
}

// 查询范围内指定的消息信息
func XRangeN(ctx context.Context, stream, start, stop string, count int64) ([]redis.XMessage, error) {
	return redisx.XRangeN(ctx, stream, start, stop, count)
}

// 获取完整的Stream信息
func XInfoStreamFull(ctx context.Context, key string, count int) (*redis.XInfoStreamFull, error) {
	return redisx.XInfoStreamFull(ctx, key, count)
}

/********* 分布式锁操作 *********/

type RedisLock = redisx.RedisLock

func TryLock(ctx context.Context, key string, ttl time.Duration) (*RedisLock, bool, error) {
	return redisx.TryLock(ctx, key, ttl)
}

func Lock(ctx context.Context, key string, ttl, retryInterval, timeout time.Duration) (*RedisLock, error) {
	return redisx.Lock(ctx, key, ttl, retryInterval, timeout)
}

/********* JSON操作 *********/

// SetJSON 将任意结构体序列化为 JSON 存入 Redis
func SetJSON(ctx context.Context, key string, value interface{}, ttl time.Duration) error {
	return redisx.SetJSON(ctx, key, value, ttl)
}

// GetJSON 从 Redis 获取并反序列化为指定结构体
func GetJSON[T any](ctx context.Context, key string, dest *T) error {
	return redisx.GetJSON[T](ctx, key, dest)
}

// MustGetJSON 返回默认值版本（未命中时返回 nil）
func MustGetJSON[T any](ctx context.Context, key string) *T {
	return redisx.MustGetJSON[T](ctx, key)
}

// HSetJSON 在 Hash 中存储 JSON
func HSetJSON(ctx context.Context, key, field string, value interface{}) error {
	return redisx.HSetJSON(ctx, key, field, value)
}

// HGetJSON 从 Hash 中读取 JSON
func HGetJSON[T any](ctx context.Context, key, field string, dest *T) error {
	return redisx.HGetJSON[T](ctx, key, field, dest)
}

// MGetJSON 支持批量获取多个 JSON 对象
func MGetJSON[T any](ctx context.Context, keys ...string) (map[string]*T, []string, error) {
	return redisx.MGetJSON[T](ctx, keys...)
}

/********* Lua脚本操作 *********/

func RunScript(ctx context.Context, script string, keys []string, args ...interface{}) (interface{}, error) {
	return redisx.RunScript(ctx, script, keys, args...)
}

/********* 发布订阅操作 *********/

func Publish(ctx context.Context, channel string, msg interface{}) error {
	return redisx.Publish(ctx, channel, msg)
}

func Subscribe(ctx context.Context, channel string) *redis.PubSub {
	return redisx.Subscribe(ctx, channel)
}

/********* 管道与事务 *********/

func Pipeline(ctx context.Context, fn func(redis.Pipeliner) error) ([]redis.Cmder, error) {
	return redisx.Pipeline(ctx, fn)
}

/********* 工具方法 *********/

// Delete
func Delete(ctx context.Context, keys ...string) error {
	return redisx.Del(ctx, keys...)
}

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

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

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

// Exists
func Exists(ctx context.Context, key string) (bool, error) {
	return redisx.Exists(ctx, key)
}