package account

import (
	model2 "SciencesServer/app/common/model"
	"SciencesServer/app/enterprise/model"
	"SciencesServer/app/handle"
	"SciencesServer/serve/orm"
	"SciencesServer/utils"
	"errors"
	"gorm.io/gorm"
)

type Login struct{}

type (
	LoginHandle func() *Login
)

type (
	LoginParams struct {
		Captcha struct {
			Mobile, Captcha string
		}
		Password struct {
			Mobile, Password string
		}
		Platform struct {
			OpenID string
		}
	}
)

// LoginMode 登陆模式
type LoginMode int

const (
	LoginModeForSmsCaptcha LoginMode = iota + 1e2 + 1 // 短信验证码登陆
	LoginModeForPassword                              // 密码登陆
	LoginModeForWechat                                // 微信登陆
	LoginModeForQQ                                    // QQ登陆
)

var loginHandle = map[LoginMode]func(*LoginParams) (*InstanceLoginParams, error){
	LoginModeForSmsCaptcha: loginForSmsCaptcha, LoginModeForPassword: loginForPassword,
}

// loginForSmsCaptcha 短信验证码登陆
func loginForSmsCaptcha(params *LoginParams) (*InstanceLoginParams, error) {
	if !utils.ValidateMobile(params.Captcha.Mobile) {
		return nil, errors.New("手机号码格式异常")
	}
	pass, err := handle.NewCaptcha().Validate(&handle.CaptchaSms{
		Mobile: params.Captcha.Mobile, Captcha: params.Captcha.Captcha,
	})
	if err != nil {
		return nil, err
	} else if !pass {
		return nil, errors.New("验证码错误或已过期")
	}
	var isExist bool

	mUserInstance := model.NewUserInstance()

	mUserTenant := model.NewUserTenant()

	if isExist, err = model2.FirstField(mUserInstance.UserInstance, []string{"id", "uuid", "name", "mobile", "status"},
		model2.NewWhere("mobile", params.Captcha.Mobile)); err != nil {
		return nil, err
	}
	if isExist {
		// 最后一次选中的身份信息
		if _, err = model2.FirstField(mUserTenant.UserTenant, []string{"id", "uid", "uuid", "name", "identity"},
			model2.NewWhere("uid", mUserInstance.UUID),
			model2.NewWhere("selected", model2.UserTenantSelectedForYes)); err != nil {
			return nil, err
		}
	} else {
		mUserInstance.Password = utils.GetRandomString(12)

		if err = orm.GetDB().Transaction(func(tx *gorm.DB) error {
			if err = model2.Create(mUserInstance.UserInstance, tx); err != nil {
				return err
			}
			mUserTenant.UID = mUserInstance.UUID
			mUserTenant.Name = params.Captcha.Mobile
			mUserTenant.Selected = model2.UserTenantSelectedForYes
			return model2.Create(mUserTenant.UserTenant, tx)
		}); err != nil {
			return nil, err
		}
	}
	return &InstanceLoginParams{
		UID: mUserTenant.UUID, Name: mUserTenant.Name, Mobile: mUserInstance.Mobile,
		Identity: mUserInstance.Identity, SelectIdentity: mUserTenant.Identity,
		Status: mUserInstance.Status,
	}, nil
}

// loginForPassword 密码登陆
func loginForPassword(params *LoginParams) (*InstanceLoginParams, error) {
	if !utils.ValidateMobile(params.Password.Mobile) {
		return nil, errors.New("手机号码格式异常")
	}
	mUserInstance := model.NewUserInstance()

	isExist, err := model2.FirstField(mUserInstance.UserInstance, []string{"id", "uuid", "mobile", "password", "salt", "status"},
		model2.NewWhere("mobile", params.Password.Mobile))

	if err != nil {
		return nil, err
	} else if isExist {
		return nil, errors.New("当前手机号码未注册")
	}
	if !mUserInstance.ValidatePassword(params.Password.Password) {
		return nil, errors.New("账户或密码错误")
	}
	mUserTenant := model.NewUserTenant()
	// 最后一次选中的身份信息
	if _, err = model2.FirstField(mUserTenant.UserTenant, []string{"id", "uid", "uuid", "name", "identity"},
		model2.NewWhere("uid", mUserInstance.UUID),
		model2.NewWhere("selected", model2.UserTenantSelectedForYes)); err != nil {
		return nil, err
	}
	return &InstanceLoginParams{
		UID: mUserTenant.UUID, Name: mUserTenant.Name, Mobile: mUserInstance.Mobile,
		Identity: mUserInstance.Identity, SelectIdentity: mUserTenant.Identity,
		Status: mUserInstance.Status,
	}, nil
}

func loginForPlatform(params *LoginParams) error {
	return nil
}

func (c *Login) Launch(mode LoginMode, params *LoginParams) (*InstanceLoginReturn, error) {
	handle, has := loginHandle[mode]

	if !has {
		return nil, errors.New("未知的登陆模式")
	}
	ret, err := handle(params)

	if err != nil {
		return nil, err
	}
	if ret.Status != model2.AccountStatusForEnable {
		return nil, errors.New("该账号已禁止登陆，请联系管理员")
	}
	return NewInstance()().Login()(ret), err
}

func (c *Login) BindName(token, name string) {
	// 解析token
	tokenInfo := utils.JWTDecrypt(token)

	if tokenInfo == nil {
		//return errors.New("")
	}
}

func (c *Login) BindMobile(token, mobile, captcha string) (*InstanceLoginReturn, error) {
	pass, err := handle.NewCaptcha().Validate(&handle.CaptchaSms{
		Mobile: mobile, Captcha: captcha,
	})
	if err != nil {
		return nil, err
	} else if !pass {
		return nil, errors.New("验证码错误或已过期")
	}
	return nil, err
}

func NewLogin() LoginHandle {
	return func() *Login {
		return &Login{}
	}
}