// Copyright 2023 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .

package actionutils

import (
	"encoding/json"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/dao"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	"github.com/TeaOSLab/EdgeUser/internal/oplogs"
	"github.com/TeaOSLab/EdgeUser/internal/rpc"
	"github.com/TeaOSLab/EdgeUser/internal/utils"
	"github.com/TeaOSLab/EdgeUser/internal/web/actions/default/login/loginutils"
	"github.com/TeaOSLab/EdgeUser/internal/web/helpers"
	"github.com/iwind/TeaGo/actions"
	"github.com/iwind/TeaGo/maps"
	"github.com/iwind/TeaGo/types"
	stringutil "github.com/iwind/TeaGo/utils/string"
	"github.com/xlzd/gotp"
	"time"
)

var TokenSalt = stringutil.Rand(32)

// LoginAction 登录动作
type LoginAction struct {
	ParentAction
}

// RunPost 提交
func (this *LoginAction) RunPost(params struct {
	Token    string
	Username string
	Password string
	OtpCode  string
	Remember bool

	Must *actions.Must
	Auth *helpers.UserShouldAuth
	CSRF *CSRF
}) {
	params.Must.
		Field("username", params.Username).
		Require("请输入用户名").
		Field("password", params.Password).
		Require("请输入密码")

	if params.Password == stringutil.Md5("") {
		this.FailField("password", "请输入密码")
	}

	// 检查token
	if len(params.Token) <= 32 {
		this.Fail("请通过登录页面登录")
	}
	timestampString := params.Token[32:]
	if stringutil.Md5(TokenSalt+timestampString) != params.Token[:32] {
		this.FailField("refresh", "登录页面已过期，请刷新后重试")
	}
	timestamp := types.Int64(timestampString)
	if timestamp < time.Now().Unix()-1800 {
		this.FailField("refresh", "登录页面已过期，请刷新后重试")
	}

	rpcClient, err := rpc.SharedRPC()
	if err != nil {
		this.Fail("服务器出了点小问题：" + err.Error())
		return
	}
	resp, err := rpcClient.UserRPC().LoginUser(rpcClient.Context(0), &pb.LoginUserRequest{
		Username: params.Username,
		Password: params.Password,
	})
	if err != nil {
		err = dao.SharedLogDAO.CreateUserLog(rpcClient.Context(0), oplogs.LevelError, this.Request.URL.Path, "登录时发生系统错误："+err.Error(), loginutils.RemoteIP(&this.ActionObject))
		if err != nil {
			utils.PrintError(err)
		}

		Fail(this, err)
	}

	if !resp.IsOk {
		err = dao.SharedLogDAO.CreateUserLog(rpcClient.Context(0), oplogs.LevelWarn, this.Request.URL.Path, "登录失败，用户名："+params.Username, loginutils.RemoteIP(&this.ActionObject))
		if err != nil {
			utils.PrintError(err)
		}

		this.Fail(resp.Message)
	}

	// 检查OTP
	otpLoginResp, err := this.RPC().LoginRPC().FindEnabledLogin(this.UserContext(), &pb.FindEnabledLoginRequest{
		UserId: resp.UserId,
		Type:   "otp",
	})
	if err != nil {
		this.ErrorPage(err)
		return
	}
	if otpLoginResp.Login != nil && otpLoginResp.Login.IsOn {
		loginParams := maps.Map{}
		err = json.Unmarshal(otpLoginResp.Login.ParamsJSON, &loginParams)
		if err != nil {
			this.ErrorPage(err)
			return
		}
		secret := loginParams.GetString("secret")
		if gotp.NewDefaultTOTP(secret).Now() != params.OtpCode {
			this.Fail("请输入正确的OTP动态密码")
		}
	}

	var userId = resp.UserId
	params.Auth.StoreUser(userId, params.Remember)

	// 清理老的SESSION
	var currentIP = loginutils.RemoteIP(&this.ActionObject)
	_, err = this.RPC().LoginSessionRPC().ClearOldLoginSessions(this.UserContext(), &pb.ClearOldLoginSessionsRequest{
		Sid: this.Session().Sid,
		Ip:  currentIP,
	})
	if err != nil {
		this.ErrorPage(err)
		return
	}

	// 记录日志
	err = dao.SharedLogDAO.CreateUserLog(rpcClient.Context(userId), oplogs.LevelInfo, this.Request.URL.Path, "成功登录系统，用户名："+params.Username, currentIP)
	if err != nil {
		this.ErrorPage(err)
		return
	}

	this.Success()
}