package util

import (
	"context"
	"ims/util/cache"
	"ims/util/db"
	"ims/util/jwt"
	"ims/util/rdb"
	"os"
	"time"

	"github.com/shopspring/decimal"
	"zestack.dev/env"
)

func Init(_ context.Context) error {
	// 设置 decimal 的序列化结果为不带引号的字符串，
	// 也就是 json 数字为非字符串。
	decimal.MarshalJSONWithoutQuotes = true

	var err error
	call := func(fn func() error) {
		if err == nil {
			err = fn()
		}
	}
	call(initTimeZone)
	call(db.Init)
	call(rdb.Init)
	call(cache.Init)
	call(jwt.Init)
	return err
}

// 初始化时区
func initTimeZone() error {
	timeZone := env.String("TIME_ZONE", "Asia/Shanghai")
	if tzdata := env.String("TZDATA_PATH"); tzdata != "" {
		if data, err := os.ReadFile(tzdata); err != nil {
			return err
		} else if local, err := time.LoadLocationFromTZData(timeZone, data); err != nil {
			return err
		} else {
			time.Local = local
		}
	} else if local, err := time.LoadLocation(timeZone); err != nil {
		return err
	} else {
		time.Local = local
	}
	return nil
}