package redis

import (
	"context"
	"finclip-app-manager/infrastructure/config"
	"strings"
	"time"

	"github.com/SkyAPM/go2sky"
	"github.com/garyburd/redigo/redis"
	goRedis "github.com/go-redis/redis/v8"
	fcredis "gitlab.finogeeks.club/finclip-backend-v2/finclip-redis"
	"gitlab.finogeeks.club/finclip-backend/apm"
)

const (
	MODE_SINGLE      = "single"
	MODE_SENTINEL    = "sentinel"
	MODE_SENTINEL_V2 = "sentinel_v2"
	MODE_CLUSTER     = "cluster"
	MODE_CLUSTER_V2  = "cluster_v2"
)

func init() {
	RedisStart()
}

func RedisStart() {
	cfg := config.GetConfig()
	switch cfg.RedisMode {
	case "single":
		opt, err := goRedis.ParseURL(cfg.RedisAddr)
		if err != nil {
			panic(err)
		}
		opt.Password = cfg.RedisPassword
		err = fcredis.Init("single", opt)
		if err != nil {
			panic(err)
		}
	case "sentinel", "sentinel_v2":
		opt := &goRedis.FailoverOptions{
			SentinelAddrs:    strings.Split(cfg.RedisSentinelAddr, ","),
			SentinelPassword: cfg.RedisSentinelPassword,
			MasterName:       cfg.RedisMasterName,
			DB:               cfg.RedisDatabase,
		}
		if err := fcredis.Init("sentinel", opt); err != nil {
			panic(err)
		}
	case "cluster", "cluster_v2":
		opt := &goRedis.ClusterOptions{
			Addrs:    strings.Split(cfg.RedisAddr, ","),
			Password: cfg.RedisPassword,
		}
		if err := fcredis.Init("cluster", opt); err != nil {
			panic(err)
		}
	}
	return
}

func createRedisSpan(ctx context.Context, action string) go2sky.Span {
	switch config.GetConfig().RedisMode {
	case MODE_SENTINEL_V2:
		span := apm.ApmClient().CreateRedisExitSpan(ctx, action,
			config.GetConfig().RedisSentinelAddr, "")
		span.Log(time.Now(), "Mode", config.GetConfig().RedisMode)
		span.Log(time.Now(), "MasterName", config.GetConfig().RedisMasterName)
		return span
	case MODE_CLUSTER:
		span := apm.ApmClient().CreateRedisExitSpan(ctx, action,
			config.GetConfig().RedisAddr, "")
		span.Log(time.Now(), "Mode", config.GetConfig().RedisMode)
		return span
	case MODE_CLUSTER_V2:
		span := apm.ApmClient().CreateRedisExitSpan(ctx, action,
			config.GetConfig().RedisAddr, "")
		span.Log(time.Now(), "Mode", config.GetConfig().RedisMode)
		return span
	default:
		if config.GetConfig().RedisMode == MODE_SENTINEL {
			span := apm.ApmClient().CreateRedisExitSpan(ctx, action,
				config.GetConfig().RedisSentinelAddr, "")
			span.Log(time.Now(), "Mode", config.GetConfig().RedisMode)
			span.Log(time.Now(), "MasterName", config.GetConfig().RedisMasterName)
			return span
		} else {
			span := apm.ApmClient().CreateRedisExitSpan(ctx, action,
				config.GetConfig().RedisAddr, "")
			span.Log(time.Now(), "Mode", config.GetConfig().RedisMode)
			return span
		}
	}
}

func RedisSet(ctx context.Context, key string, value string, expireTime int) (err error) {
	span := createRedisSpan(ctx, "RedisSet")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Set(ctx, "finclip_"+key, value, time.Duration(expireTime)*time.Second).Err()
}

func RedisGet(ctx context.Context, key string) (s string, err error) {
	span := createRedisSpan(ctx, "RedisGet")
	span.Log(time.Now(), "key", key)
	return fcredis.Client().Get(ctx, "finclip_"+key).Result()
}

func RedisGetNum(ctx context.Context, key string) (s int, err error) {
	span := createRedisSpan(ctx, "RedisGet")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Get(ctx, "finclip_"+key).Int()
}

func RedisDel(ctx context.Context, key string) (err error) {
	span := createRedisSpan(ctx, "RedisDel")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Del(ctx, "finclip_"+key).Err()
}

func Setnx(ctx context.Context, key string, value string, expireTime int) (exi bool, err error) {
	span := createRedisSpan(ctx, "Setnx")
	span.Log(time.Now(), "key", key)
	defer span.End()
	notExi, err := fcredis.Client().SetNX(ctx, "finclip_"+key, value, time.Duration(expireTime)*time.Second).Result()
	return !notExi, err
}

func RedisSetByte(ctx context.Context, key string, value []byte, expireTime int) (err error) {
	span := createRedisSpan(ctx, "RedisSetByte")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Set(ctx, "finclip_"+key, value, time.Duration(expireTime)*time.Second).Err()
}

func RedisGetByte(ctx context.Context, key string) (bytes []byte, err error) {
	span := createRedisSpan(ctx, "RedisGetByte")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Get(ctx, "finclip_"+key).Bytes()
}

func RedisSetExpire(ctx context.Context, key string, sec int) (err error) {
	span := createRedisSpan(ctx, "RedisSetExpire")
	span.Log(time.Now(), "key", key)
	defer span.End()
	return fcredis.Client().Expire(ctx, "finclip_"+key, time.Duration(sec)*time.Second).Err()
}

func RedisIncrValue(ctx context.Context, key string) (value int, err error) {
	span := createRedisSpan(ctx, "RedisIncrValue")
	span.Log(time.Now(), "key", key)
	result, err := fcredis.Client().Incr(ctx, "finclip_"+key).Result()
	return int(result), err

}

func RedisGetIntValue(ctx context.Context, key string) (val int, err error) {
	return fcredis.Client().Get(ctx, "finclip_"+key).Int()
}

func TryLock(ctx context.Context, key string, lockTime time.Duration) (ok bool, err error) {
	return fcredis.Lock(ctx, "finclip_"+key, lockTime*time.Second)
}

func Unlock(ctx context.Context, key string) error {
	return fcredis.Client().Del(ctx, "finclip_"+key).Err()
}

func RedisNotFound(err error) bool {
	return err == goRedis.Nil || err == redis.ErrNil
}