package configloaders

import (
	"encoding/json"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	"github.com/TeaOSLab/EdgeCommon/pkg/systemconfigs"
	"github.com/TeaOSLab/EdgeUser/internal/rpc"
	"github.com/iwind/TeaGo/logs"
	"reflect"
	"time"
)

var sharedUIConfig *systemconfigs.UserUIConfig = nil

func init() {
	// 更新任务
	// TODO 改成实时更新
	var ticker = time.NewTicker(1 * time.Minute)
	go func() {
		for range ticker.C {
			err := reloadUIConfig()
			if err != nil {
				logs.Println("[CONFIG_LOADERS]load ui config failed: " + err.Error())
			}
		}
	}()
}

func LoadUIConfig() (*systemconfigs.UserUIConfig, error) {
	locker.Lock()
	defer locker.Unlock()

	config, err := loadUIConfig()
	if err != nil {
		return nil, err
	}

	v := reflect.Indirect(reflect.ValueOf(config)).Interface().(systemconfigs.UserUIConfig)
	return &v, nil
}

func loadUIConfig() (*systemconfigs.UserUIConfig, error) {
	if sharedUIConfig != nil {
		return sharedUIConfig, nil
	}
	var rpcClient, err = rpc.SharedRPC()
	if err != nil {
		return nil, err
	}
	resp, err := rpcClient.SysSettingRPC().ReadSysSetting(rpcClient.Context(0), &pb.ReadSysSettingRequest{
		Code: systemconfigs.SettingCodeUserUIConfig,
	})
	if err != nil {
		return nil, err
	}
	if len(resp.ValueJSON) == 0 {
		sharedUIConfig = systemconfigs.NewUserUIConfig()
		return sharedUIConfig, nil
	}

	var config = systemconfigs.NewUserUIConfig()
	err = json.Unmarshal(resp.ValueJSON, config)
	if err != nil {
		logs.Println("[UI_MANAGER]" + err.Error())
		sharedUIConfig = systemconfigs.NewUserUIConfig()
		return sharedUIConfig, nil
	}
	sharedUIConfig = config

	// 时区
	updateTimeZone(config)

	return sharedUIConfig, nil
}

func reloadUIConfig() error {
	var rpcClient, err = rpc.SharedRPC()
	if err != nil {
		return err
	}
	resp, err := rpcClient.SysSettingRPC().ReadSysSetting(rpcClient.Context(0), &pb.ReadSysSettingRequest{
		Code: systemconfigs.SettingCodeUserUIConfig,
	})
	if err != nil {
		return err
	}
	if len(resp.ValueJSON) == 0 {
		return nil
	}

	var config = systemconfigs.NewUserUIConfig()
	err = json.Unmarshal(resp.ValueJSON, config)
	if err != nil {
		return err
	}
	var oldConfig = sharedUIConfig
	sharedUIConfig = config

	// 时区
	if oldConfig == nil || oldConfig.TimeZone != config.TimeZone {
		updateTimeZone(config)
	}

	return nil
}

// 修改时区
func updateTimeZone(config *systemconfigs.UserUIConfig) {
	if len(config.TimeZone) > 0 {
		location, err := time.LoadLocation(config.TimeZone)
		if err == nil && time.Local != location {
			time.Local = location
		}
	}
}