296 lines
7.8 KiB
Go
296 lines
7.8 KiB
Go
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package service
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import (
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"context"
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"html"
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"regexp"
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"strconv"
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"strings"
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"unicode"
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"unicode/utf16"
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"unicode/utf8"
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"go-common/app/interface/openplatform/article/dao"
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"go-common/app/interface/openplatform/article/model"
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"go-common/library/ecode"
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"go-common/library/log"
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strip "github.com/grokify/html-strip-tags-go"
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)
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var (
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_zeroWidthReg = regexp.MustCompile(`[\x{200b}]+`)
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_nocharReg = []*regexp.Regexp{
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// regexp.MustCompile(`[\p{Hangul}]+`), // kr
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regexp.MustCompile(`[\p{Tibetan}]+`), // tibe
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regexp.MustCompile(`[\p{Arabic}]+`), // arabic
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}
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_chineseReg = regexp.MustCompile(`[\p{Han}]+`) // chinese
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)
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func (s *Service) allowRepeat(c context.Context, mid int64, title string) (ok bool) {
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log.Info("allowRepeat check start | mid(%d) title(%s).", mid, title)
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exist, _ := s.dao.SubmitCache(c, mid, title)
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log.Info("allowRepeat from cache | mid(%d) title(%s) exist(%d).", mid, title, exist)
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if !exist {
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log.Info("allowRepeat not exist | mid(%d) title(%s)", mid, title)
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s.dao.AddSubmitCache(c, mid, title)
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log.Info("allowRepeat add cache | mid(%d) title(%s).", mid, title)
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ok = true
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return
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}
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dao.PromInfo("creation:禁止重复标题")
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return
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}
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func (s *Service) preMust(c context.Context, art *model.Article) (err error) {
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var ok bool
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if art.Title, ok = s.checkTitle(art.Title); !ok || art.Title == "" {
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log.Error("s.checkTitle mid(%d) art.Title(%s) title contains illegal char or is empty", art.Author.Mid, art.Title)
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err = ecode.CreativeArticleTitleErr
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return
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}
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if art.Content, ok = s.checkContent(art.Content); !ok {
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log.Error("s.checkContent mid(%d) content too long", art.Author.Mid)
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err = ecode.CreativeArticleContentErr
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return
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}
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if !s.allowCategory(art.Category.ID) {
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log.Error("s.allowCategory mid(%d) art.Category(%d) not exists", art.Author.Mid, art.Category)
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err = ecode.CreativeArticleCategoryErr
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return
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}
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if !s.allowReprints(int8(art.Reprint)) {
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log.Error("s.allowReprints mid(%d) art.Reprint(%d) illegal reprint", art.Author.Mid, art.Reprint)
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err = ecode.CreativeArticleReprintErr
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return
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}
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if !s.allowTID(int8(art.TemplateID)) {
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log.Error("s.allowTID mid(%d) art.TemplateID(%d) illegal reprint", art.Author.Mid, art.TemplateID)
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err = ecode.CreativeArticleTIDErr
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return
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}
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if !model.ValidTemplate(art.TemplateID, art.ImageURLs) {
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err = ecode.ArtCreationTplErr
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return
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}
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if !s.allowTag(art.Tags) {
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log.Error("s.allowTag mid(%d) art.Tags(%s) tag name or number too large", art.Author.Mid, art.Tags)
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err = ecode.CreativeArticleTagErr
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}
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if art.Dynamic, ok = s.allowDynamicIntro(art.Dynamic); !ok {
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log.Error("s.checkDynamicIntro mid(%d) art.DynamicIntro(%s) title contains illegal char", art.Author.Mid, art.Dynamic)
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err = ecode.CreativeDynamicIntroErr
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return
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}
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return
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}
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func (s *Service) checkTitle(title string) (ct string, ok bool) {
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title = strings.TrimSpace(title)
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allCount := utf8.RuneCountInString(title)
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enCount := utf8.RuneCountInString(_chineseReg.ReplaceAllString(title, ""))
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chineseCount := allCount - enCount
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if chineseCount*2+enCount > 80 {
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return
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}
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for _, reg := range _nocharReg {
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if reg.MatchString(title) {
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return
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}
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}
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ct = _zeroWidthReg.ReplaceAllString(title, "")
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if utf8.RuneCountInString(ct) <= 0 {
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return
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}
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ok = true
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return
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}
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func (s *Service) contentStripSize(content string) (count int) {
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stripped := strip.StripTags(content)
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stripped = html.UnescapeString(stripped)
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stripped = strings.Map(func(r rune) rune {
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if unicode.IsSpace(r) {
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return -1
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}
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return r
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}, stripped)
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stripped = strings.Replace(stripped, "\u200B", "", -1)
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stripped = strings.Replace(stripped, "\u00a0", "", -1)
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// utf16 size
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for _, r := range stripped {
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count += len(utf16.Encode([]rune{rune(r)}))
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}
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// 图片计算为一个字
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offset := strings.Count(content, "<img") - strings.Count(stripped, "<img")
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count += offset
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return
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}
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func (s *Service) checkContent(content string) (ct string, ok bool) {
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ct = strings.TrimSpace(content)
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ct = _zeroWidthReg.ReplaceAllString(ct, "")
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if len(ct) > s.c.Article.MaxContentSize {
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return
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}
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size := s.contentStripSize(ct)
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if size < s.c.Article.MinContentLength || size > s.c.Article.MaxContentLength {
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return
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}
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ok = true
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return
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}
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func (s *Service) preArticleCheck(c context.Context, art *model.Article) (err error) {
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if !s.allowRepeat(c, art.Author.Mid, art.Title) {
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err = ecode.CreativeArticleCanNotRepeat
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return
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}
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if err = s.preMust(c, art); err != nil {
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return
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}
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return
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}
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func (s *Service) allowCategory(cid int64) (ok bool) {
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_, ok = s.categoriesMap[cid]
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return
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}
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func (s *Service) allowReprints(cp int8) (ok bool) {
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ok = model.InReprints(cp)
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return
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}
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func (s *Service) allowTID(tid int8) (ok bool) {
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ok = model.InTemplateID(tid)
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return
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}
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func (s *Service) allowTag(tags []*model.Tag) (ok bool) {
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if (len(tags) > 12) || (len(tags) == 0) {
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return
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}
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for _, tag := range tags {
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if _zeroWidthReg.MatchString(tag.Name) {
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return
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}
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if (utf8.RuneCountInString(tag.Name) > 20) || (tag.Name == "") {
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return
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}
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}
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return true
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}
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//allowDynamicIntro 移动端动态推荐语，选填，不能超过233字.
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func (s *Service) allowDynamicIntro(dynamicIntro string) (ct string, ok bool) {
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ct = strings.TrimSpace(dynamicIntro)
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if utf8.RuneCountInString(ct) > 233 {
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return
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}
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ok = true
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return
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}
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func (s *Service) preDraftCheck(c context.Context, art *model.Draft) (err error) {
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if art.Title == "" {
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art.Title = "无标题"
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}
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var ok bool
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if art.Title, ok = s.checkTitle(art.Title); !ok {
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log.Error("s.checkTitle mid(%d) art.Title(%s) title contains illegal char or is empty", art.Author.Mid, art.Title)
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err = ecode.CreativeArticleTitleErr
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}
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return
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}
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// ParseParam parse article param which type is int.
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func (s *Service) ParseParam(c context.Context, categoryStr, reprintStr, tidStr, imageURLs, originImageURLs string) (art *model.ArtParam, err error) {
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var (
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category int64
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tid, reprint int
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)
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category, err = strconv.ParseInt(categoryStr, 10, 64)
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if err != nil || category <= 0 { //文章要求必须传大于0的分类
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err = ecode.CreativeArticleCategoryErr
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return
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}
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tid, err = strconv.Atoi(tidStr)
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if err != nil || tid < 0 {
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err = ecode.CreativeArticleTIDErr
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return
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}
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reprint, err = strconv.Atoi(reprintStr)
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if err != nil || reprint < 0 {
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err = ecode.CreativeArticleReprintErr
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return
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}
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imgs, oimgs, err := ParseImageURLs(imageURLs, originImageURLs)
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if err != nil {
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return
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}
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art = &model.ArtParam{
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Category: category,
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TemplateID: int32(tid),
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Reprint: int32(reprint),
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ImageURLs: imgs,
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OriginImageURLs: oimgs,
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}
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return
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}
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// ParseDraftParam parse draft param which type is int.
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func (s *Service) ParseDraftParam(c context.Context, categoryStr, reprintStr, tidStr, imageURLs, originImageURLs string) (art *model.ArtParam, err error) {
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var (
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category int64
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tid, reprint int
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)
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if categoryStr != "" {
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category, err = strconv.ParseInt(categoryStr, 10, 64)
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if err != nil || category < 0 {
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err = ecode.CreativeArticleCategoryErr
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return
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}
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}
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if tidStr != "" {
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tid, err = strconv.Atoi(tidStr)
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if err != nil || tid < 0 {
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err = ecode.CreativeArticleTIDErr
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return
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}
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}
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if reprintStr != "" {
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reprint, err = strconv.Atoi(reprintStr)
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if err != nil || reprint < 0 {
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err = ecode.CreativeArticleReprintErr
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return
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}
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}
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imgs, oimgs, err := ParseImageURLs(imageURLs, originImageURLs)
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if err != nil {
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return
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}
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art = &model.ArtParam{
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Category: category,
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TemplateID: int32(tid),
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Reprint: int32(reprint),
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ImageURLs: imgs,
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OriginImageURLs: oimgs,
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}
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return
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}
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//ParseImageURLs parse img urls to []string.
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func ParseImageURLs(imageURLs, originImageURLs string) (imgs, oimgs []string, err error) {
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if originImageURLs == "" {
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originImageURLs = imageURLs
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}
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imgs = strings.Split(imageURLs, ",")
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oimgs = strings.Split(originImageURLs, ",")
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if len(imgs) != len(oimgs) {
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err = ecode.CreativeArticleImageURLsErr
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}
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return
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}
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