// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
//go:build plus

package tasks

import (
	"github.com/TeaOSLab/EdgeAdmin/internal/configs"
	teaconst "github.com/TeaOSLab/EdgeAdmin/internal/const"
	"github.com/TeaOSLab/EdgeAdmin/internal/events"
	"github.com/TeaOSLab/EdgeAdmin/internal/goman"
	"github.com/TeaOSLab/EdgeAdmin/internal/plus"
	"github.com/TeaOSLab/EdgeAdmin/internal/rpc"
	"github.com/TeaOSLab/EdgeAdmin/internal/setup"
	"github.com/TeaOSLab/EdgeCommon/pkg/iplibrary"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	plusutils "github.com/TeaOSLab/EdgePlus/pkg/utils"
	"github.com/iwind/TeaGo/Tea"
	"github.com/iwind/TeaGo/logs"
	timeutil "github.com/iwind/TeaGo/utils/time"
	"time"
)

func init() {
	events.On(events.EventStart, func() {
		var task = NewAuthorityTask()
		goman.New(func() {
			task.Start()
		})
	})
}

var authorityTaskNotifyChange = make(chan bool, 1)

func NotifyAuthorityTask() {
	select {
	case authorityTaskNotifyChange <- true:
	default:
	}
}

type AuthorityTask struct {
	oldIsPlus bool
}

func NewAuthorityTask() *AuthorityTask {
	return &AuthorityTask{}
}

func (this *AuthorityTask) Start() {
	// 从缓存中读取
	var config = configs.ReadPlusConfig()
	if config != nil {
		teaconst.IsPlus = config.IsPlus
		this.notifyChange()
		plus.UpdateComponents(config.Edition, config.Components)
	}

	// 开始计时器
	var ticker = time.NewTicker(10 * time.Minute)
	if Tea.IsTesting() {
		// 快速测试
		ticker = time.NewTicker(1 * time.Minute)
	}

	// 初始化的时候先获取一次
	var timeout = time.NewTimer(3 * time.Second)
	<-timeout.C
	err := this.Loop()
	if err != nil {
		logs.Println("[TASK][AuthorityTask]" + err.Error())
	}

	// 定时获取
	for {
		select {
		case <-ticker.C:
		case <-authorityTaskNotifyChange:
		}
		err := this.Loop()
		if err != nil {
			logs.Println("[TASK][AuthorityTask]" + err.Error())
		}
	}
}

func (this *AuthorityTask) Loop() error {
	// 如果还没有安装直接返回
	if !setup.IsConfigured() {
		return nil
	}

	rpcClient, err := rpc.SharedRPC()
	if err != nil {
		return err
	}
	resp, err := rpcClient.AuthorityKeyRPC().ReadAuthorityKey(rpcClient.Context(0), &pb.ReadAuthorityKeyRequest{})
	if err != nil {
		teaconst.IsPlus = false

		if !rpc.IsConnError(err) {
			this.notifyChange()
		}

		return err
	}

	defer this.notifyChange()

	if resp.AuthorityKey == nil {
		teaconst.IsPlus = false
		return nil
	}

	plus.ErrString = ""
	var plusEdition = ""
	if resp.AuthorityKey != nil && len(resp.AuthorityKey.Value) > 0 && resp.AuthorityKey.DayTo >= timeutil.Format("Y-m-d") {
		nativeKey, err := plusutils.DecodeKey([]byte(resp.AuthorityKey.Value))
		if err != nil {
			teaconst.IsPlus = false
			return nil
		}
		var isOk = true

		if len(nativeKey.RequestCode) > 0 {
			isOk, _ = plusutils.ValidateRequestCode(nativeKey.RequestCode)
		} else if len(nativeKey.MacAddresses) > 0 {
			var macAddresses = resp.AuthorityKey.MacAddresses
			for _, addr := range macAddresses {
				if !plus.ValidateMac(addr) {
					isOk = false
					break
				}
			}
		}

		if isOk {
			plusEdition = resp.AuthorityKey.Edition
			teaconst.IsPlus = true
			plus.UpdateComponents(resp.AuthorityKey.Edition, resp.AuthorityKey.Components)
		} else {
			plus.ErrString = "当前管理平台所在服务器环境与商业版认证分发时发生了变化，因此无法使用商业版功能。如果你正在迁移管理平台，请联系开发者重新申请新的注册码。"
			teaconst.IsPlus = false
		}
	} else {
		teaconst.IsPlus = false
	}

	_ = configs.WritePlusConfig(&configs.PlusConfig{
		Edition:    plusEdition,
		IsPlus:     teaconst.IsPlus,
		Components: resp.AuthorityKey.Components,
		DayTo:      resp.AuthorityKey.DayTo,
	})

	return nil
}

func (this *AuthorityTask) notifyChange() {
	if this.oldIsPlus == teaconst.IsPlus {
		return
	}
	this.oldIsPlus = teaconst.IsPlus

	go func() {
		time.Sleep(1 * time.Second) // 等待默认的加载程序完成

		var err error
		if teaconst.IsPlus {
			err = iplibrary.InitPlus()
		} else {
			err = iplibrary.InitDefault()
		}
		if err != nil {
			logs.Println("[NODE]initialize ip library failed: " + err.Error())
		}
	}()
}