// 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 sender

import (
	"context"
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"net/http"
	"strings"

	"yunion.io/x/cloudmux/pkg/cloudprovider"
	"yunion.io/x/jsonutils"
	"yunion.io/x/pkg/errors"
	"yunion.io/x/pkg/util/httputils"

	api "yunion.io/x/onecloud/pkg/apis/notify"
	"yunion.io/x/onecloud/pkg/notify/models"
)

type SWebhookSender struct {
	config map[string]api.SNotifyConfigContent
}

func (self *SWebhookSender) GetSenderType() string {
	return api.WEBHOOK_ROBOT
}

func GenerateHMACSignature(payload []byte, secret string) string {
	// 创建HMAC哈希器
	h := hmac.New(sha256.New, []byte(secret))
	// 写入要签名的数据
	h.Write(payload)
	// 计算哈希值并转为16进制字符串
	return hex.EncodeToString(h.Sum(nil))
}

func (self *SWebhookSender) Send(ctx context.Context, args api.SendParams) error {
	dict := jsonutils.NewDict()
	header := http.Header{}
	if len(args.Event) == 0 {
		if len(args.MsgKey) == 0 {
			dict.Set("Msg", jsonutils.NewString(args.Message))
		} else {
			dict.Set(args.MsgKey, jsonutils.NewString(args.Message))
		}
		if args.Body != nil {
			jsonutils.Update(dict, args.Body)
		}
	} else {
		body, err := jsonutils.ParseString(args.Message)
		if err != nil {
			return errors.Wrapf(err, "unable to parse %q", args.Message)
		}
		jsonutils.Update(dict, body)
		if len(args.MsgKey) == 0 {
			dict.Set("Msg", jsonutils.NewString(args.Message))
		} else {
			dict.Set(args.MsgKey, jsonutils.NewString(args.Message))
		}
		if args.Body != nil {
			jsonutils.Update(dict, args.Body)
		}
		event := strings.ToUpper(args.Event)
		header.Set(EVENT_HEADER, event)
	}
	if args.Header != nil {
		resmap, _ := args.Header.GetMap()
		for k, v := range resmap {
			vStr, err := v.GetString()
			if err != nil {
				continue
			}
			header.Set(k, vStr)
		}
	}

	if len(args.SecretKey) > 0 {
		signature := GenerateHMACSignature([]byte(jsonutils.Marshal(dict).String()), args.SecretKey)
		header.Set(api.WEBHOOK_SIGNATURE_HEADER, signature)
	}

	_, _, err := httputils.JSONRequest(cli, ctx, httputils.POST, args.Receivers.Contact, header, dict, false)
	return errors.Wrap(err, "webhook send")
}

func (websender *SWebhookSender) ValidateConfig(ctx context.Context, config api.NotifyConfig) (string, error) {
	return "", cloudprovider.ErrNotImplemented
}

func (websender *SWebhookSender) UpdateConfig(config api.NotifyConfig) error {
	return cloudprovider.ErrNotImplemented
}

func (websender *SWebhookSender) AddConfig(config api.NotifyConfig) error {
	return cloudprovider.ErrNotImplemented
}

func (websender *SWebhookSender) DeleteConfig(config api.NotifyConfig) error {
	return cloudprovider.ErrNotImplemented
}

func (websender *SWebhookSender) ContactByMobile(ctx context.Context, mobile, domainId string) (string, error) {
	return "", cloudprovider.ErrNotImplemented
}

func (websender *SWebhookSender) IsPersonal() bool {
	return true
}

func (websender *SWebhookSender) IsRobot() bool {
	return true
}

func (websender *SWebhookSender) IsValid() bool {
	return len(websender.config) > 0
}

func (websender *SWebhookSender) IsPullType() bool {
	return true
}

func (websender *SWebhookSender) IsSystemConfigContactType() bool {
	return true
}

func (websender *SWebhookSender) GetAccessToken(ctx context.Context, key string) error {
	return nil
}

func (websender *SWebhookSender) RegisterConfig(config models.SConfig) {
}

func init() {
	models.Register(&SWebhookSender{
		config: map[string]api.SNotifyConfigContent{},
	})
}