// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.

package exector

import (
	"context"
	"fmt"
	"runtime/debug"

	"github.com/ghodss/yaml"

	"github.com/goodrain/rainbond/builder/parser"
	"github.com/goodrain/rainbond/event"
	"github.com/goodrain/rainbond/mq/api/grpc/pb"
	"github.com/pquerna/ffjson/ffjson"
	"github.com/sirupsen/logrus"
)

//ServiceCheckInput 任务输入数据
type ServiceCheckInput struct {
	CheckUUID string `json:"uuid"`
	//检测来源类型
	SourceType string `json:"source_type"`

	// 检测来源定义，
	// 代码： https://github.com/shurcooL/githubql.git master
	// docker-run: docker run --name xxx nginx:latest nginx
	// docker-compose: compose全文
	SourceBody string `json:"source_body"`
	Username   string `json:"username"`
	Password   string `json:"password"`
	TenantID   string
	EventID    string `json:"event_id"`
}

//ServiceCheckResult 应用检测结果
type ServiceCheckResult struct {
	//检测状态 Success Failure
	CheckStatus string                `json:"check_status"`
	ErrorInfos  parser.ParseErrorList `json:"error_infos"`
	ServiceInfo []parser.ServiceInfo  `json:"service_info"`
}

//CreateResult 创建检测结果
func CreateResult(ErrorInfos parser.ParseErrorList, ServiceInfo []parser.ServiceInfo) (ServiceCheckResult, error) {
	var sr ServiceCheckResult
	if ErrorInfos != nil && ErrorInfos.IsFatalError() {
		sr = ServiceCheckResult{
			CheckStatus: "Failure",
			ErrorInfos:  ErrorInfos,
			ServiceInfo: ServiceInfo,
		}
	} else {
		sr = ServiceCheckResult{
			CheckStatus: "Success",
			ErrorInfos:  ErrorInfos,
			ServiceInfo: ServiceInfo,
		}
	}
	//save result
	return sr, nil
}

//serviceCheck 应用创建源检测
func (e *exectorManager) serviceCheck(task *pb.TaskMessage) {
	//step1 判断应用源类型
	//step2 获取应用源介质，镜像Or源码
	//step3 解析判断应用源规范
	//完成
	var input ServiceCheckInput
	if err := ffjson.Unmarshal(task.TaskBody, &input); err != nil {
		logrus.Error("Unmarshal service check input data error.", err.Error())
		return
	}
	logger := event.GetManager().GetLogger(input.EventID)
	defer event.GetManager().ReleaseLogger(logger)
	defer func() {
		if r := recover(); r != nil {
			logrus.Errorf("service check error: %v", r)
			debug.PrintStack()
			logger.Error("The back-end service has deserted, please try again.", map[string]string{"step": "callback", "status": "failure"})
		}
	}()
	logger.Info("Start component deploy source check.", map[string]string{"step": "starting"})
	logrus.Infof("start check service by type: %s ", input.SourceType)
	var pr parser.Parser
	switch input.SourceType {
	case "docker-run":
		pr = parser.CreateDockerRunOrImageParse(input.Username, input.Password, input.SourceBody, e.DockerClient, logger)
	case "docker-compose":
		var yamlbody = input.SourceBody
		if input.SourceBody[0] == '{' {
			yamlbyte, err := yaml.JSONToYAML([]byte(input.SourceBody))
			if err != nil {
				logrus.Errorf("json bytes format is error, %s", input.SourceBody)
				logger.Error("The dockercompose file is not in the correct format", map[string]string{"step": "callback", "status": "failure"})
				return
			}
			yamlbody = string(yamlbyte)
		}
		pr = parser.CreateDockerComposeParse(yamlbody, e.DockerClient, input.Username, input.Password, logger)
	case "sourcecode":
		pr = parser.CreateSourceCodeParse(input.SourceBody, logger)
	case "third-party-service":
		pr = parser.CreateThirdPartyServiceParse(input.SourceBody, logger)
	}
	if pr == nil {
		logger.Error("Creating component source types is not supported", map[string]string{"step": "callback", "status": "failure"})
		return
	}
	errList := pr.Parse()
	for i, err := range errList {
		if err.SolveAdvice == "" && input.SourceType != "sourcecode" {
			errList[i].SolveAdvice = fmt.Sprintf("解析器认为镜像名为:%s,请确认是否正确或镜像是否存在", pr.GetImage())
		}
		if err.SolveAdvice == "" && input.SourceType == "sourcecode" {
			errList[i].SolveAdvice = "源码智能解析失败"
		}
	}
	serviceInfos := pr.GetServiceInfo()
	sr, err := CreateResult(errList, serviceInfos)
	if err != nil {
		logrus.Errorf("create check result error,%s", err.Error())
		logger.Error("创建检测结果失败。", map[string]string{"step": "callback", "status": "failure"})
	}
	k := fmt.Sprintf("/servicecheck/%s", input.CheckUUID)
	v := sr
	vj, err := ffjson.Marshal(&v)
	if err != nil {
		logrus.Errorf("mashal servicecheck value error, %v", err)
		logger.Error("格式化检测结果失败。", map[string]string{"step": "callback", "status": "failure"})
	}
	ctx, cancel := context.WithCancel(context.Background())
	_, err = e.EtcdCli.Put(ctx, k, string(vj))
	cancel()
	if err != nil {
		logrus.Errorf("put servicecheck k %s into etcd error, %v", k, err)
		logger.Error("存储检测结果失败。", map[string]string{"step": "callback", "status": "failure"})
	}
	logrus.Infof("check service by type: %s  success", input.SourceType)
	logger.Info("创建检测结果成功。", map[string]string{"step": "last", "status": "success"})
}