// Copyright 2019 Yunion
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package oauth2

import (
	"context"

	"yunion.io/x/jsonutils"
	"yunion.io/x/pkg/errors"

	api "yunion.io/x/onecloud/pkg/apis/identity"
	"yunion.io/x/onecloud/pkg/httperrors"
	"yunion.io/x/onecloud/pkg/keystone/driver"
	"yunion.io/x/onecloud/pkg/keystone/models"
	"yunion.io/x/onecloud/pkg/mcclient"
)

type SOAuth2DriverClass struct{}

func (self *SOAuth2DriverClass) IsSso() bool {
	return true
}

func (self *SOAuth2DriverClass) ForceSyncUser() bool {
	return false
}

func (self *SOAuth2DriverClass) GetDefaultIconUri(tmpName string) string {
	switch tmpName {
	case api.IdpTemplateDingtalk:
		return "https://img.alicdn.com/tfs/TB13Bxnd3oQMeJjy0FoXXcShVXa-80-80.png"
	case api.IdpTemplateFeishu:
		return "https://sf1-ttcdn-tos.pstatp.com/obj/suite-public-file-cn/feishu-share-icon.png"
	case api.IdpTemplateAlipay:
		return "https://gw.alipayobjects.com/mdn/member_frontWeb/afts/img/A*h7o9Q4g2KiUAAAAAAAAAAABkARQnAQ"
	case api.IdpTemplateWechat:
		return "https://open.weixin.qq.com/zh_CN/htmledition/res/assets/res-design-download/icon64_appwx_logo.png"
	case api.IdpTemplateQywechat:
		return "http://yunioniso.oss-cn-beijing.aliyuncs.com/icons/qywechat_logo.png"
	}
	return "https://st.fbk.eu/sites/st.fbk.eu/files/styles/threshold-1382/public/oauth2-logo.jpg"
}

func (self *SOAuth2DriverClass) SingletonInstance() bool {
	return false
}

func (self *SOAuth2DriverClass) SyncMethod() string {
	return api.IdentityProviderSyncOnAuth
}

func (self *SOAuth2DriverClass) NewDriver(idpId, idpName, template, targetDomainId string, conf api.TConfigs) (driver.IIdentityBackend, error) {
	return NewOAuth2Driver(idpId, idpName, template, targetDomainId, conf)
}

func (self *SOAuth2DriverClass) Name() string {
	return api.IdentityDriverOAuth2
}

func (self *SOAuth2DriverClass) ValidateConfig(ctx context.Context, userCred mcclient.TokenCredential, template string, tconf api.TConfigs, idpId, domainId string) (api.TConfigs, error) {
	conf := api.SOAuth2IdpConfigOptions{}
	confJson := jsonutils.Marshal(tconf[api.IdentityDriverOAuth2])
	err := confJson.Unmarshal(&conf)
	if err != nil {
		return tconf, errors.Wrap(err, "unmarshal config")
	}
	if len(conf.AppId) == 0 {
		return tconf, errors.Wrap(httperrors.ErrInputParameter, "empty app_id")
	}
	if len(conf.Secret) == 0 {
		return tconf, errors.Wrap(httperrors.ErrInputParameter, "empty secret")
	}
	// validate uniqueness
	unique, err := models.IdentityProviderManager.CheckUniqueness(idpId, domainId, api.IdentityDriverOAuth2, template, api.IdentityDriverOAuth2, "app_id", jsonutils.NewString(conf.AppId))
	if err != nil {
		return tconf, errors.Wrap(err, "IdentityProviderManager.CheckUniqueness")
	}
	if !unique {
		return tconf, errors.Wrapf(httperrors.ErrDuplicateResource, "app_id %s has been registered", conf.AppId)
	}
	factory := findDriverFactory(template)
	if factory == nil {
		return nil, errors.Wrapf(httperrors.ErrNotSupported, "template %s not supported", template)
	}
	err = factory.ValidateConfig(conf)
	if err != nil {
		return nil, errors.Wrap(err, "factory.ValidateConfig")
	}
	nconf := make(map[string]jsonutils.JSONObject)
	err = confJson.Unmarshal(&nconf)
	if err != nil {
		return tconf, errors.Wrap(err, "Unmarshal old config")
	}
	err = jsonutils.Marshal(conf).Unmarshal(&nconf)
	if err != nil {
		return tconf, errors.Wrap(err, "Unmarshal new config")
	}
	tconf[api.IdentityDriverOAuth2] = nconf
	return tconf, nil
}

func init() {
	driver.RegisterDriverClass(&SOAuth2DriverClass{})
}