package conf

import (
	"errors"
	"flag"

	"go-common/library/cache/redis"
	"go-common/library/conf"
	"go-common/library/database/sql"
	ecode "go-common/library/ecode/tip"
	"go-common/library/log"
	bm "go-common/library/net/http/blademaster"
	"go-common/library/net/http/blademaster/middleware/verify"
	"go-common/library/net/rpc"
	"go-common/library/net/rpc/warden"
	"go-common/library/net/trace"
	"go-common/library/queue/databus"

	"github.com/BurntSushi/toml"
)

var (
	// Conf .
	Conf = &Config{}

	confPath string
	client   *conf.Client
)

// Config struct
type Config struct {
	Xlog           *log.Config
	Tracer         *trace.Config
	BM             *bm.ServerConfig
	DB             *sql.Config
	Ecode          *ecode.Config
	Verify         *verify.Config
	Redis          *redis.Config
	AllowType      []int
	RedisExpire    int64
	Databus        *databus.Config
	ArchiveDatabus *databus.Config
	WardenServer   *warden.ServerConfig
	ArcRPC         *rpc.ClientConfig
	Target         int64
	Sources        []int64
	Worker         int
}

func init() {
	flag.StringVar(&confPath, "conf", "", "default config path")
}

// Init init config.
func Init() (err error) {
	if confPath != "" {
		_, err = toml.DecodeFile(confPath, &Conf)
		return
	}
	err = remote()
	return
}

func remote() (err error) {
	if client, err = conf.New(); err != nil {
		return
	}
	if err = load(); err != nil {
		return
	}
	go func() {
		for range client.Event() {
			log.Info("config reload")
			if load() != nil {
				log.Error("config reload error (%v)", err)
			}
		}
	}()
	return
}

func load() (err error) {
	var (
		s       string
		ok      bool
		tmpConf = &Config{}
	)
	if s, ok = client.Toml2(); !ok {
		return errors.New("load config center error")
	}
	if _, err = toml.Decode(s, tmpConf); err != nil {
		return errors.New("could not decode config")
	}
	*Conf = *tmpConf
	return
}