hongze_yb/services/share_poster.go

package services

import (
	"encoding/json"
	"errors"
	"fmt"
	"github.com/PuerkitoBio/goquery"
	"hongze/hongze_yb/global"
	"hongze/hongze_yb/models/tables/yb_poster_resource"
	"hongze/hongze_yb/models/tables/yb_suncode_pars"
	"hongze/hongze_yb/services/alarm_msg"
	"hongze/hongze_yb/services/wx_app"
	"hongze/hongze_yb/utils"
	"io/ioutil"
	"net/http"
	"os"
	"strings"
	"time"
)

var ServerUrl = "http://127.0.0.1:5008/"

// SharePosterReq 分享海报请求体
type SharePosterReq struct {
	CodePage  string `json:"code_page" description:"太阳码page"`
	CodeScene string `json:"code_scene" description:"太阳码scene"`
	Source    string `json:"source" description:"来源"`
	Version   string `json:"version" description:"海报版本号" `
	Pars      string `json:"pars" description:"海报动态信息"`
}

// CreatePosterFromSource 生成分享海报
func CreatePosterFromSource(codePage, codeScene, source, version, pars string) (imgUrl string, err error) {
	var errMsg string
	defer func() {
		if err != nil {
			global.LOG.Critical(fmt.Sprintf("CreatePosterFromSource: source=%s, pars:%s, errMsg:%s", source, pars, errMsg))
			go alarm_msg.SendAlarmMsg("CreatePosterFromSource生成分享海报失败, Msg:"+errMsg+";Err:"+err.Error(), 2)
		}
	}()
	if codePage == "" || source == "" || pars == "" {
		errMsg = "参数有误"
		err = errors.New(errMsg)
		return
	}
	path := fmt.Sprint(codePage, "?", codeScene)
	// 非列表来源获取历史图片,无则生成
	if !strings.Contains(source, "list") {
		poster, tmpErr := yb_poster_resource.GetPosterByCondition(path, "poster", version)
		if tmpErr != nil && tmpErr != utils.ErrNoRow {
			err = tmpErr
			return
		}
		if poster != nil && poster.ImgURL != "" {
			imgUrl = poster.ImgURL
			return
		}
	}
	// 图片长宽
	heightMap := map[string]int{
		"activity_detail":       1210,
		"activity_list":         1948,
		"special_column_detail": 1480,
		"special_column_list":   1548,
		"chart_detail":          1536,
		"chart_list":            1352,
		"report_detail":         1420,
		"report_list":           1344,
	}
	widthMap := map[string]int{
		"activity_detail":       1280,
		"activity_list":         1280,
		"special_column_detail": 1176,
		"special_column_list":   1176,
		"chart_detail":          1176,
		"chart_list":            1176,
		"report_detail":         1176,
		"report_list":           1176,
	}
	width := widthMap[source]
	height := heightMap[source]
	if width == 0 || height == 0 {
		errMsg = "图片长度有误"
		err = errors.New(errMsg)
		return "", err
	}
	// 生成太阳码
	sunCodeUrl, err := CreateAndUploadSunCode(codePage, codeScene, version)
	if err != nil {
		return
	}
	// 填充html内容
	contentStr, newHeight, err := fillContent2Html(source, pars, sunCodeUrl, height)
	if err != nil {
		errMsg = "html内容有误"
		return
	}
	// 请求python服务htm2img
	htm2ImgReq := make(map[string]interface{})
	htm2ImgReq["html_content"] = contentStr
	htm2ImgReq["width"] = width
	htm2ImgReq["height"] = newHeight
	res, err := postHtml2Img(htm2ImgReq)
	if err != nil || res == nil {
		errMsg = "html转图片请求失败"
		return
	}
	if res.Code != 200 {
		errMsg = "html转图片请求失败"
		err = errors.New("html转图片失败: " + res.Msg)
		return
	}
	imgUrl = res.Data
	// 记录海报信息
	newPoster := &yb_poster_resource.YbPosterResource{
		Path:       path,
		ImgURL:     imgUrl,
		Type:       "poster",
		Version:    version,
		CreateTime: time.Now(),
	}
	err = newPoster.Create()
	return
}

type Html2ImgResp struct {
	Code int    `json:"code"`
	Msg  string `json:"msg"`
	Data string `json:"data"`
}

// postHtml2Img 请求htm2img接口
func postHtml2Img(param map[string]interface{}) (resp *Html2ImgResp, err error) {
	// 目前仅此处调用该接口，暂不加授权、校验等
	postUrl := ServerUrl + "htm2img"
	postData, err := json.Marshal(param)
	if err != nil {
		return
	}
	result, err := Html2ImgHttpPost(postUrl, string(postData), "application/json")
	if err != nil {
		return
	}
	if err = json.Unmarshal(result, &resp); err != nil {
		return
	}
	return resp, nil
}

// Html2ImgHttpPost post请求
func Html2ImgHttpPost(url, postData string, params ...string) ([]byte, error) {
	body := ioutil.NopCloser(strings.NewReader(postData))
	client := &http.Client{}
	req, err := http.NewRequest("POST", url, body)
	if err != nil {
		return nil, err
	}
	contentType := "application/x-www-form-urlencoded;charset=utf-8"
	if len(params) > 0 && params[0] != "" {
		contentType = params[0]
	}
	req.Header.Set("Content-Type", contentType)
	resp, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	b, err := ioutil.ReadAll(resp.Body)
	fmt.Println("HttpPost:" + string(b))
	return b, err
}

// CreateAndUploadSunCode 生成太阳码并上传OSS
func CreateAndUploadSunCode(page, scene, version string) (imgUrl string, err error) {
	if page == "" {
		err = errors.New("page不能为空")
		return
	}
	path := fmt.Sprint(page, "?", scene)
	exist, err := yb_poster_resource.GetPosterByCondition(path, "qrcode", version)
	if err != nil && err != utils.ErrNoRow {
		return
	}
	if exist != nil && exist.ImgURL != "" {
		return exist.ImgURL, nil
	}
	// scene超过32位会生成失败，md5处理至32位
	sceneMD5 := "a=1"
	if scene != "" {
		sceneMD5 = utils.MD5(scene)
	}
	picByte, err := wx_app.GetSunCode(page, sceneMD5)
	if err != nil {
		return
	}
	// 生成图片
	localPath := "./static/img"
	fileName := utils.GetRandStringNoSpecialChar(28) + ".png"
	fpath := fmt.Sprint(localPath, "/", fileName)
	f, err := os.Create(fpath)
	if err != nil {
		return
	}
	if _, err = f.Write(picByte); err != nil {
		return
	}
	defer func() {
		f.Close()
		os.Remove(fpath)
	}()
	// 上传OSS
	fileDir := "yb/suncode/"
	imgUrl, err = UploadAliyunToDir(fileName, fpath, fileDir)
	if err != nil {
		return
	}
	// 记录二维码信息
	newPoster := &yb_poster_resource.YbPosterResource{
		Path:       path,
		ImgURL:     imgUrl,
		Type:       "qrcode",
		Version:    version,
		CreateTime: time.Now(),
	}
	err = newPoster.Create()
	if err != nil {
		return
	}
	// 记录参数md5
	if scene != "" {
		newPars := &yb_suncode_pars.YbSuncodePars{
			Scene:      scene,
			SceneKey:   sceneMD5,
			CreateTime: time.Now(),
		}
		err = newPars.Create()
	}
	return
}

type PosterParsReq struct {
	ActivityTitle   string `json:"activity_title"`
	ActivityAvatar  string `json:"activity_avatar"`
	ActivitySpeaker string `json:"activity_speaker"`
	ActivityTime    string `json:"activity_time"`
	ChartName       string `json:"chart_name"`
	ChartImage      string `json:"chart_image"`
	ReportType      string `json:"report_type"`
	ReportAvatar    string `json:"report_avatar"`
	ReportTitle     string `json:"report_title"`
	ReportAbstract  string `json:"report_abstract"`
	Stage1          string `json:"stage_1"`
	Avatar1         string `json:"avatar_1"`
	Title1          string `json:"title_1"`
	Author1         string `json:"author_1"`
	Tag1            string `json:"tag_1"`
	Img1            string `json:"img_1"`
	Time1           string `json:"time_1"`
	Abstract1       string `json:"abstract_1"`
	Status1         string `json:"status_1"`
	Speaker1        string `json:"speaker_1"`
	Stage2          string `json:"stage_2"`
	Avatar2         string `json:"avatar_2"`
	Title2          string `json:"title_2"`
	Author2         string `json:"author_2"`
	Tag2            string `json:"tag_2"`
	Img2            string `json:"img_2"`
	Abstract2       string `json:"abstract_2"`
	Time2           string `json:"time_2"`
	Status2         string `json:"status_2"`
	Speaker2        string `json:"speaker_2"`
	ListTitle       string `json:"list_title"`
}

// fillContent2Html 填充HTML动态内容
func fillContent2Html(source, pars, sunCodeUrl string, height int) (contentStr string, newHeight int, err error) {
	params := new(PosterParsReq)
	if err = json.Unmarshal([]byte(pars), &params); err != nil {
		return
	}
	template := fmt.Sprint("static/htm2img/", source, ".html")
	contentByte, err := ioutil.ReadFile(template)
	if err != nil {
		return
	}
	newHeight = height
	contentStr = string(contentByte)
	// 列表的动态内容不完整的用默认内容的填充
	var emptyTime1, emptyTime2 bool
	if strings.Contains(source, "list") {
		if params.Title1 == "" || params.Title2 == "" {
			defaultAvatar := "https://hzstatic.hzinsights.com/static/images/202112/20211210/wn6c3oYKTfT4NbTZgRGflRuIBZaa.png"
			switch source {
			case "activity_list":
				if params.Title1 == "" {
					params.ListTitle = "线下沙龙"
					params.Status1 = "未开始"
					params.Avatar1 = defaultAvatar
					params.Title1 = "周度报告"
					params.Speaker1 = "FICC研究员"
					params.Time1 = "2022-5-10"
					emptyTime1 = true
				}
				params.Status2 = params.Status1
				params.Avatar2 = defaultAvatar
				params.Title2 = "周度报告"
				params.Speaker2 = "FICC研究员"
				params.Time2 = "2022-5-10"
				emptyTime2 = true
			case "special_column_list":
				if params.Title1 == "" {
					params.Stage1 = "第1期"
					params.Avatar1 = defaultAvatar
					params.Title1 = "弘则FICC专栏"
					params.Author1 = "弘则研究"
					params.Tag1 = "FICC研究员"
				}
				params.Stage2 = "第2期"
				params.Avatar2 = defaultAvatar
				params.Title2 = "弘则FICC专栏"
				params.Author2 = "弘则研究"
				params.Tag2 = "FICC研究员"
			case "chart_list":
				if params.Title1 == "" {
					params.Title1 = "螺纹仓单-热卷仓单季节性"
					params.Img1 = "https://hzstatic.hzinsights.com/static/images/202112/20211227/8VBIH1l6VraYpLCoBS6qOIXA5Zoq.png"
				}
				params.Title2 = "卷螺期货现货价差"
				params.Img2 = "https://hzstatic.hzinsights.com/static/images/202204/20220427/d8GRfdR3Xfrvk397SnYudcwVs9pV.png"
			case "report_list":
				if params.Title1 == "" {
					params.Img1 = defaultAvatar
					params.Title1 = "弘则FICC研报"
					params.Time1 = "1期"
				}
				params.Img2 = defaultAvatar
				params.Title2 = "弘则FICC研报"
				params.Time2 = "2期"
			}
		}
	}
	// 填充指定内容
	switch source {
	case "activity_detail":
		contentStr = strings.Replace(contentStr, "{{ACTIVITY_TITLE}}", params.ActivityTitle, 1)
		contentStr = strings.Replace(contentStr, "{{ACTIVITY_AVATAR}}", params.ActivityAvatar, 1)
		contentStr = strings.Replace(contentStr, "{{ACTIVITY_SPEAKER}}", params.ActivitySpeaker, 1)
		contentStr = strings.Replace(contentStr, "{{ACTIVITY_TIME}}", params.ActivityTime, 1)
	case "special_column_detail":
		contentStr = strings.Replace(contentStr, "{{REPORT_AVATAR}}", params.ReportAvatar, 1)
		contentStr = strings.Replace(contentStr, "{{REPORT_TITLE}}", params.ReportTitle, 1)
		contentStr = strings.Replace(contentStr, "{{REPORT_ABSTRACT}}", params.ReportAbstract, 1)
	case "chart_detail":
		contentStr = strings.Replace(contentStr, "{{CHART_NAME}}", params.ChartName, 1)
		contentStr = strings.Replace(contentStr, "{{CHART_IMAGE}}", params.ChartImage, 1)
	case "report_detail":
		doc, tmpErr := goquery.NewDocumentFromReader(strings.NewReader(params.ReportAbstract))
		if tmpErr != nil {
			err = tmpErr
			return
		}
		abstract := ""
		doc.Find("p").Each(func(i int, s *goquery.Selection) {
			phtml, tmpErr := s.Html()
			if tmpErr != nil {
				err = tmpErr
				return
			}
			st := s.Text()
			if st != "" && st != "<br>" && st != "<br style=\"max-width: 100%;\">" && !strings.Contains(phtml, "iframe") {
				abstract = abstract + "<p>" + phtml + "</p>"
			}
		})
		contentStr = strings.Replace(contentStr, "{{REPORT_TYPE}}", params.ReportType, 1)
		contentStr = strings.Replace(contentStr, "{{REPORT_TITLE}}", params.ReportTitle, 1)
		contentStr = strings.Replace(contentStr, "{{REPORT_ABSTRACT}}", abstract, 1)
	case "special_column_list":
		contentStr = strings.Replace(contentStr, "{{LIST_TITLE}}", params.ListTitle, 1)
		contentStr = strings.Replace(contentStr, "{{STAGE_1}}", "第" + params.Stage1 + "期", 1)
		contentStr = strings.Replace(contentStr, "{{AVATAR_1}}", params.Avatar1, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_1}}", params.Title1, 1)
		contentStr = strings.Replace(contentStr, "{{AUTHOR_1}}", params.Author1, 1)
		contentStr = strings.Replace(contentStr, "{{TAG_1}}", params.Tag1, 1)
		contentStr = strings.Replace(contentStr, "{{STAGE_2}}", "第" + params.Stage2 + "期", 1)
		contentStr = strings.Replace(contentStr, "{{AVATAR_2}}", params.Avatar2, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_2}}", params.Title2, 1)
		contentStr = strings.Replace(contentStr, "{{AUTHOR_2}}", params.Author2, 1)
		contentStr = strings.Replace(contentStr, "{{TAG_2}}", params.Tag2, 1)
	case "chart_list":
		contentStr = strings.Replace(contentStr, "{{LIST_TITLE}}", params.ListTitle, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_1}}", params.Title1, 1)
		contentStr = strings.Replace(contentStr, "{{IMG_1}}", params.Img1, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_2}}", params.Title2, 1)
		contentStr = strings.Replace(contentStr, "{{IMG_2}}", params.Img2, 1)
	case "report_list":
		contentStr = strings.Replace(contentStr, "{{LIST_TITLE}}", params.ListTitle, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_1}}", params.Title1, 1)
		contentStr = strings.Replace(contentStr, "{{ABSTRACT_1}}", params.Abstract1, 1)
		contentStr = strings.Replace(contentStr, "{{IMG_1}}", params.Img1, 1)
		contentStr = strings.Replace(contentStr, "{{TIME_1}}", params.Time1, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_2}}", params.Title2, 1)
		contentStr = strings.Replace(contentStr, "{{ABSTRACT_2}}", params.Abstract2, 1)
		contentStr = strings.Replace(contentStr, "{{IMG_2}}", params.Img2, 1)
		contentStr = strings.Replace(contentStr, "{{TIME_2}}", params.Time2, 1)
	case "activity_list":
		bgColorMap := map[string]string{
			"未开始": "#E3B377",
			"进行中": "#3385FF",
			"已结束": "#A2A2A2",
		}
		statusItemMap := map[string]string{
			"未开始": "block",
			"进行中": "none",
			"已结束": "none",
		}
		offlineMap := map[string]string{
			"线上会议": "none",
			"线下沙龙": "block",
		}
		onlineMap := map[string]string{
			"线上会议": "block",
			"线下沙龙": "none",
		}
		if params.Status1 != "未开始" {
			newHeight = 1715
		}
		contentStr = strings.Replace(contentStr, "{{LIST_TITLE}}", "弘则FICC周度电话会安排", 1)
		contentStr = strings.Replace(contentStr, "{{BG_COLORE_1}}", bgColorMap[params.Status1], 1)
		contentStr = strings.Replace(contentStr, "{{STATUS_1}}", params.Status1, 1)
		contentStr = strings.Replace(contentStr, "{{AVATAR_1}}", params.Avatar1, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_1}}", params.Title1, 1)
		contentStr = strings.Replace(contentStr, "{{SPEAKER_1}}", params.Speaker1, 1)
		contentStr = strings.Replace(contentStr, "{{TIME_1}}", params.Time1, 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_ITEM_1}}", statusItemMap[params.Status1], 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_OFFLINE_1}}", offlineMap[params.ListTitle], 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_ONLINE_1}}", onlineMap[params.ListTitle], 1)
		contentStr = strings.Replace(contentStr, "{{BG_COLORE_2}}", bgColorMap[params.Status2], 1)
		contentStr = strings.Replace(contentStr, "{{STATUS_2}}", params.Status2, 1)
		contentStr = strings.Replace(contentStr, "{{AVATAR_2}}", params.Avatar2, 1)
		contentStr = strings.Replace(contentStr, "{{TITLE_2}}", params.Title2, 1)
		contentStr = strings.Replace(contentStr, "{{SPEAKER_2}}", params.Speaker2, 1)
		contentStr = strings.Replace(contentStr, "{{TIME_2}}", params.Time2, 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_ITEM_2}}", statusItemMap[params.Status2], 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_OFFLINE_2}}", offlineMap[params.ListTitle], 1)
		contentStr = strings.Replace(contentStr, "{{SHOW_ONLINE_2}}", onlineMap[params.ListTitle], 1)
		// 用默认内容填充的活动时间字体颜色调至看不见
		color1 := "#999"
		color2 := "#999"
		if emptyTime1 {
			color1 = "#fff"
		}
		if emptyTime2 {
			color2 = "#fff"
		}
		contentStr = strings.Replace(contentStr, "{{TIME_COLOR_1}}", color1, 1)
		contentStr = strings.Replace(contentStr, "{{TIME_COLOR_2}}", color2, 1)
	}
	contentStr = strings.Replace(contentStr, "{{SUN_CODE}}", sunCodeUrl, 1)
	return
}