package manchong

import (
	"github.com/go-sql-driver/mysql"
	"github.com/json-iterator/go"
	"io"
	"os"
	"sync"
	"time"
)

type Config struct {
	Addr    string            `json:"addr"`
	LogLeve string            `json:"log_leve"`
	LogFile string            `json:"log_file"`
	Users   map[string]string `json:"users"`
	MySQL   *mysql.Config     `json:"mysql"`
}

var CFG = Config{
	Addr:    ":8080",
	LogLeve: "info",
	LogFile: "",
	Users:   nil,
	MySQL:   mysql.NewConfig(),
}
var fnsL = &sync.Mutex{}
var fns = make([]func(), 0, 10)

func RegisterReloadConfigCall(fn func()) {
	fnsL.Lock()
	defer fnsL.Unlock()
	fns = append(fns, fn)
	fn()
}

func readCFG() {
	file, err := os.Open("config.json")
	if err != nil {
		panic(err)
	}
	bs, err := io.ReadAll(file)
	if err != nil {
		panic(err)
	}
	err = jsoniter.Unmarshal(bs, &CFG)
	CFG.MySQL.Loc = time.Local
	if err != nil {
		panic(err)
	}
	fnsL.Lock()
	defer fnsL.Unlock()
	for _, fn := range fns {
		fn()
	}
}

func init() {
	readCFG()
}