package services

import (
	"bytes"
	"encoding/json"
	"eta/eta_report/models"
	"eta/eta_report/services/alarm_msg"
	"eta/eta_report/utils"
	"fmt"
	"io/ioutil"
	"net/http"
	"sync"
	"time"
)

const (
	PythonReportHtml2ImgApi           = "/api/report/html2img"         // 图片生成接口
	PythonReportHtml2ImgClearLocalApi = "/api/report/clear_local_file" // 清除本地图片文件接口
)

// CreateReportImgAndPdf 报告详情生成长图及PDF
func CreateReportImgAndPdf(req Report2ImgQueueReq) {
	// 研报以后大概率也需要, 暂只处理智能研报的
	if req.ReportType != 2 {
		return
	}
	if req.ReportCode == "" {
		return
	}
	var err error
	defer func() {
		if err != nil {
			tips := fmt.Sprintf("报告详情转长图, ErrMsg: %s", err.Error())
			fmt.Println(tips)
			utils.FileLog.Info(tips)
			go alarm_msg.SendAlarmMsg(tips, 3)
		}
	}()

	// 先取报告转长图的host配置, 如果没有再取原有的报告分享配置(兼容只配了其中一个的客户)
	conf, e := models.GetBusinessConf()
	if e != nil {
		err = fmt.Errorf("获取商家配置失败, Err: %s", e.Error())
		return
	}
	reportViewHost := conf[models.BusinessConfReport2ImgUrl]
	if reportViewHost == "" {
		reportViewHost = conf[models.BusinessConfReportViewUrl]
	}
	if reportViewHost == "" {
		err = fmt.Errorf("报告分享域名未配置")
		return
	}

	// 校验报告是否被删
	reportOb := new(models.SmartReport)
	cond := ` AND report_code = ?`
	pars := make([]interface{}, 0)
	pars = append(pars, req.ReportCode)
	item, e := reportOb.GetItemByCondition(cond, pars)
	if e != nil {
		if e.Error() == utils.ErrNoRow() {
			return
		}
		err = fmt.Errorf("获取报告失败, Err: %s", e.Error())
		return
	}

	// 报告平均生成时间基本在3min以下, 设定一个6min的超时以免后续阻塞
	apiDone := make(chan bool, 1)
	apiError := make(chan error, 1)

	fileName := utils.GetRandStringNoSpecialChar(28)
	apiResult := make([]string, 0)
	go func() {
		var apiReq ReportHtml2ImgApiReq
		apiReq.ReportUrl = fmt.Sprintf("%s/%s?code=%s", reportViewHost, "smart_report_getImg", req.ReportCode)
		//if utils.RunMode == "debug" {
		//	apiReq.ReportUrl = "https://ficc.hzinsights.com/reportshare_crm_report?code=4e38d30e656da5ae9d3a425109ce9e04"
		//}
		//fmt.Println(apiReq.ReportUrl)
		apiReq.FileName = fileName
		//fmt.Println("curl start")
		res, e := CurlReportHtml2ImgApi(apiReq)
		if e != nil {
			apiError <- fmt.Errorf("CurlReportHtml2ImgApi err: %s", e.Error())
			return
		}
		//fmt.Println("curl end")
		apiResult = res
		apiDone <- true
	}()

	select {
	case <-time.After(6 * time.Minute):
		err = fmt.Errorf("报告生成长图超时")
		return
	case e = <-apiError:
		err = e
		return
	case <-apiDone:
		fmt.Println("api done")
	}
	if len(apiResult) != 2 {
		err = fmt.Errorf("文件生成有误")
		return
	}

	// 上传IMG, PDF
	var imgUrl, pdfUrl string
	var errImg, errPdf error
	//uploadDir := "static/report_images/"
	//fileDir := ""

	wg := sync.WaitGroup{}
	wg.Add(2)
	go func() {
		defer func() {
			wg.Done()
		}()

		imgFileName := fileName + ".png"
		ossClient := NewOssClient()
		if ossClient == nil {
			errImg = fmt.Errorf("初始化OSS服务失败")
			return
		}
		fmt.Println("start UploadFile")
		si, e := ossClient.UploadFile(imgFileName, apiResult[0], "")
		if e != nil {
			fmt.Println("UploadFile,Err:" + e.Error())
			errImg = fmt.Errorf("文件上传失败, Err: %s", e.Error())
			return
		}
		fmt.Println("end UploadFile:" + imgFileName)
		//if utils.ObjectStorageClient == "minio" {
		//	si, e := UploadMinIoToDir(imgFileName, apiResult[0], uploadDir, fileDir)
		//	if e != nil {
		//		errImg = e
		//		return
		//	}
		//	imgUrl = si
		//	return
		//}
		//// 默认OSS
		//si, e := UploadAliyunToDir(imgFileName, apiResult[0], uploadDir, fileDir)
		//if e != nil {
		//	errImg = e
		//	return
		//}
		imgUrl = si

		var clearReq ReportHtml2ImgApiClearLocalReq
		clearReq.FileName = imgFileName
		e = CurlReportHtml2ImgApiClearLocal(clearReq)
		if e != nil {
			errImg = e
			return
		}
	}()

	go func() {
		defer func() {
			wg.Done()
		}()

		pdfFileName := fileName + ".pdf"
		ossClient := NewOssClient()
		if ossClient == nil {
			errImg = fmt.Errorf("初始化OSS服务失败")
			return
		}
		sp, e := ossClient.UploadFile(pdfFileName, apiResult[1], "")
		if e != nil {
			errImg = fmt.Errorf("文件上传失败, Err: %s", e.Error())
			return
		}

		//if utils.ObjectStorageClient == "minio" {
		//	sp, e := UploadMinIoToDir(pdfFileName, apiResult[1], uploadDir, fileDir)
		//	if e != nil {
		//		errPdf = e
		//		return
		//	}
		//	pdfUrl = sp
		//	return
		//}
		//sp, e := UploadAliyunToDir(pdfFileName, apiResult[1], uploadDir, fileDir)
		//if e != nil {
		//	errPdf = e
		//	return
		//}
		pdfUrl = sp

		var clearReq ReportHtml2ImgApiClearLocalReq
		clearReq.FileName = pdfFileName
		e = CurlReportHtml2ImgApiClearLocal(clearReq)
		if e != nil {
			errImg = e
			return
		}
	}()
	wg.Wait()

	if errImg != nil {
		err = fmt.Errorf("upload img err: %s", e.Error())
		return
	}
	if errPdf != nil {
		err = fmt.Errorf("upload pdf err: %s", e.Error())
		return
	}

	fmt.Println("imgUrl:" + imgUrl + ";pdfUrl:" + pdfUrl)

	// 更新报告链接
	item.DetailImgUrl = imgUrl
	item.DetailPdfUrl = pdfUrl
	item.ModifyTime = time.Now().Local()
	updateCols := []string{"DetailImgUrl", "DetailPdfUrl", "ModifyTime"}
	if e = item.Update(updateCols); e != nil {
		err = fmt.Errorf("更新报告链接失败, Err: %s", e.Error())
		return
	}
	return
}

// ReportHtml2ImgApiReq 报告生成图片接口请求体
type ReportHtml2ImgApiReq struct {
	ReportUrl  string `json:"report_url" description:"报告详情分享地址"`
	FileName   string `json:"file_name" description:"生成的文件名"`
	OutputType string `json:"output_type" description:"生成类型: img/pdf, 为空则两种均生成"`
}

// ReportHtml2ImgApiResp 报告生成图片接口响应体
type ReportHtml2ImgApiResp struct {
	Code int      `json:"code" description:"状态码"`
	Msg  string   `json:"error" description:"提示信息"`
	Data []string `json:"data" description:"返回数据"`
}

// CurlReportHtml2ImgApi 请求报告生成图片接口
func CurlReportHtml2ImgApi(params ReportHtml2ImgApiReq) (apiResp []string, err error) {
	if utils.Report2ImgServerUrl == "" {
		err = fmt.Errorf("服务地址为空")
		return
	}
	url := fmt.Sprint(utils.Report2ImgServerUrl, PythonReportHtml2ImgApi)
	//fmt.Println("url: ", url)

	jsonData, e := json.Marshal(params)
	if e != nil {
		err = fmt.Errorf("data json marshal err: %s", e.Error())
		return
	}
	//fmt.Println(string(jsonData))
	//fmt.Println("http post start")
	resp, e := http.Post(url, "application/json", bytes.NewBuffer(jsonData))
	if e != nil {
		err = fmt.Errorf("http post err: %s", e.Error())
		return
	}
	defer resp.Body.Close()
	//fmt.Println("http post end")

	b, e := ioutil.ReadAll(resp.Body)
	if e != nil {
		err = fmt.Errorf("resp body read err: %s", e.Error())
		return
	}
	if len(b) == 0 {
		err = fmt.Errorf("resp body is empty")
		return
	}

	result := new(ReportHtml2ImgApiResp)
	if e = json.Unmarshal(b, &result); e != nil {
		err = fmt.Errorf("result unmarshal err: %s\nresult: %s", e.Error(), string(b))
		return
	}
	if result.Code != 200 {
		err = fmt.Errorf("result: %s", string(b))
		return
	}
	apiResp = result.Data
	return
}

// ReportHtml2ImgApiClearLocalReq 清除本地文件接口请求体
type ReportHtml2ImgApiClearLocalReq struct {
	FileName string `json:"file_name" description:"生成的文件名"`
}

// ReportHtml2ImgApiClearLocalResp 清除本地文件接口响应体
type ReportHtml2ImgApiClearLocalResp struct {
	Code int    `json:"code" description:"状态码"`
	Msg  string `json:"error" description:"提示信息"`
	Data string `json:"data" description:"返回数据"`
}

// CurlReportHtml2ImgApiClearLocal 请求清除本地文件
func CurlReportHtml2ImgApiClearLocal(params ReportHtml2ImgApiClearLocalReq) (err error) {
	if utils.Report2ImgServerUrl == "" {
		err = fmt.Errorf("服务地址为空")
		return
	}
	url := fmt.Sprint(utils.Report2ImgServerUrl, PythonReportHtml2ImgClearLocalApi)

	jsonData, e := json.Marshal(params)
	if e != nil {
		err = fmt.Errorf("data json marshal err: %s", e.Error())
		return
	}
	//fmt.Println(string(jsonData))
	resp, e := http.Post(url, "application/json", bytes.NewBuffer(jsonData))
	if e != nil {
		err = fmt.Errorf("http post err: %s", e.Error())
		return
	}
	defer resp.Body.Close()

	b, e := ioutil.ReadAll(resp.Body)
	if e != nil {
		err = fmt.Errorf("resp body read err: %s", e.Error())
		return
	}
	if len(b) == 0 {
		err = fmt.Errorf("resp body is empty")
		return
	}

	result := new(ReportHtml2ImgApiClearLocalResp)
	if e = json.Unmarshal(b, &result); e != nil {
		err = fmt.Errorf("result unmarshal err: %s\nresult: %s", e.Error(), string(b))
		return
	}
	if result.Code != 200 {
		err = fmt.Errorf("result: %s", string(b))
		return
	}
	return
}