267 lines
7.8 KiB
Go
267 lines
7.8 KiB
Go
package actions
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import (
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"fmt"
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"github.com/gin-gonic/gin"
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"github/fthvgb1/wp-go/cache"
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"github/fthvgb1/wp-go/helper"
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cache2 "github/fthvgb1/wp-go/internal/cache"
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"github/fthvgb1/wp-go/internal/logs"
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"github/fthvgb1/wp-go/internal/models"
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"github/fthvgb1/wp-go/internal/plugins"
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"github/fthvgb1/wp-go/internal/wpconfig"
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"github/fthvgb1/wp-go/plugin/digest"
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"github/fthvgb1/wp-go/rss2"
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"net/http"
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"strconv"
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"strings"
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"time"
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)
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var feedCache = cache.NewSliceCache(feed, time.Hour)
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var postFeedCache = cache.NewMapCacheByFn[string, string](postFeed, time.Hour)
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var tmp = "Mon, 02 Jan 2006 15:04:05 GMT"
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var timeFormat = "Mon, 02 Jan 2006 15:04:05 +0000"
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var templateRss rss2.Rss2
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var commentsFeedCache = cache.NewSliceCache(commentsFeed, time.Hour)
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func InitFeed() {
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templateRss = rss2.Rss2{
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Title: wpconfig.Options.Value("blogname"),
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AtomLink: fmt.Sprintf("%s/feed", wpconfig.Options.Value("home")),
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Link: wpconfig.Options.Value("siteurl"),
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Description: wpconfig.Options.Value("blogdescription"),
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Language: "zh-CN",
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UpdatePeriod: "hourly",
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UpdateFrequency: 1,
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Generator: wpconfig.Options.Value("home"),
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}
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}
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func ClearCache() {
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postFeedCache.ClearExpired()
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commentCache.ClearExpired()
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}
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func FlushCache() {
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postFeedCache.Flush()
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commentCache.Flush()
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}
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func isCacheExpired(c *gin.Context, lastTime time.Time) bool {
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eTag := helper.StringMd5(lastTime.Format(tmp))
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since := c.Request.Header.Get("If-Modified-Since")
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cTag := c.Request.Header.Get("If-None-Match")
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if since != "" && cTag != "" {
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cGMT, err := time.Parse(tmp, since)
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if err == nil && lastTime.Unix() <= cGMT.Unix() && eTag == cTag {
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c.Status(http.StatusNotModified)
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return false
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}
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}
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return true
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}
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func Feed(c *gin.Context) {
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if !isCacheExpired(c, feedCache.GetLastSetTime()) {
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c.Status(http.StatusNotModified)
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} else {
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r, err := feedCache.GetCache(c, time.Second, c)
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if err != nil {
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c.Status(http.StatusInternalServerError)
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c.Abort()
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c.Error(err)
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return
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}
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setFeed(r[0], c, feedCache.GetLastSetTime())
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}
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}
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func feed(arg ...any) (xml []string, err error) {
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c := arg[0].(*gin.Context)
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r := cache2.RecentPosts(c, 10)
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ids := helper.SliceMap(r, func(t models.Posts) uint64 {
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return t.Id
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})
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posts, err := cache2.GetPostsByIds(c, ids)
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if err != nil {
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return
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}
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rs := templateRss
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rs.LastBuildDate = time.Now().Format(timeFormat)
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rs.Items = helper.SliceMap(posts, func(t models.Posts) rss2.Item {
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desc := "无法提供摘要。这是一篇受保护的文章。"
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plugins.PasswordProjectTitle(&t)
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if t.PostPassword != "" {
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plugins.PasswdProjectContent(&t)
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} else {
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desc = digest.Raw(t.PostContent, 55, fmt.Sprintf("/p/%d", t.Id))
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}
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l := ""
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if t.CommentStatus == "open" && t.CommentCount > 0 {
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l = fmt.Sprintf("%s/p/%d#comments", wpconfig.Options.Value("siteurl"), t.Id)
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} else if t.CommentStatus == "open" && t.CommentCount == 0 {
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l = fmt.Sprintf("%s/p/%d#respond", wpconfig.Options.Value("siteurl"), t.Id)
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}
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user := cache2.GetUserById(c, t.PostAuthor)
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return rss2.Item{
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Title: t.PostTitle,
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Creator: user.DisplayName,
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Guid: t.Guid,
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SlashComments: int(t.CommentCount),
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Content: t.PostContent,
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Category: strings.Join(t.Categories, "、"),
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CommentLink: l,
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CommentRss: fmt.Sprintf("%s/p/%d/feed", wpconfig.Options.Value("siteurl"), t.Id),
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Link: fmt.Sprintf("%s/p/%d", wpconfig.Options.Value("siteurl"), t.Id),
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Description: desc,
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PubDate: t.PostDateGmt.Format(timeFormat),
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}
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})
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xml = []string{rs.GetXML()}
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return
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}
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func setFeed(s string, c *gin.Context, t time.Time) {
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lastTimeGMT := t.Format(tmp)
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eTag := helper.StringMd5(lastTimeGMT)
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c.Header("Content-Type", "application/rss+xml; charset=UTF-8")
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c.Header("Last-Modified", lastTimeGMT)
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c.Header("ETag", eTag)
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c.String(http.StatusOK, s)
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}
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func PostFeed(c *gin.Context) {
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id := c.Param("id")
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if !isCacheExpired(c, postFeedCache.GetLastSetTime(id)) {
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c.Status(http.StatusNotModified)
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} else {
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s, err := postFeedCache.GetCache(c, id, time.Second, c, id)
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if err != nil {
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c.Status(http.StatusInternalServerError)
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c.Abort()
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c.Error(err)
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return
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}
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setFeed(s, c, postFeedCache.GetLastSetTime(id))
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}
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}
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func postFeed(arg ...any) (x string, err error) {
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c := arg[0].(*gin.Context)
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id := arg[1].(string)
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Id := 0
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if id != "" {
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Id, err = strconv.Atoi(id)
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if err != nil {
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return
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}
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}
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ID := uint64(Id)
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maxId, err := cache2.GetMaxPostId(c)
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logs.ErrPrintln(err, "get max post id")
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if ID > maxId || err != nil {
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return
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}
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post, err := cache2.GetPostById(c, ID)
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if post.Id == 0 || err != nil {
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return
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}
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plugins.PasswordProjectTitle(&post)
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comments, err := cache2.PostComments(c, post.Id)
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if err != nil {
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return
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}
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rs := templateRss
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rs.Title = fmt.Sprintf("《%s》的评论", post.PostTitle)
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rs.AtomLink = fmt.Sprintf("%s/p/%d/feed", wpconfig.Options.Value("siteurl"), post.Id)
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rs.Link = fmt.Sprintf("%s/p/%d", wpconfig.Options.Value("siteurl"), post.Id)
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rs.LastBuildDate = time.Now().Format(timeFormat)
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if post.PostPassword != "" {
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if len(comments) > 0 {
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plugins.PasswdProjectContent(&post)
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t := comments[len(comments)-1]
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rs.Items = []rss2.Item{
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{
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Title: fmt.Sprintf("评价者：%s", t.CommentAuthor),
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Link: fmt.Sprintf("%s/p/%d#comment-%d", wpconfig.Options.Value("siteurl"), post.Id, t.CommentId),
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Creator: t.CommentAuthor,
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PubDate: t.CommentDateGmt.Format(timeFormat),
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Guid: fmt.Sprintf("%s#comment-%d", post.Guid, t.CommentId),
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Description: "评论受保护：要查看请输入密码。",
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Content: post.PostContent,
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},
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}
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}
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} else {
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rs.Items = helper.SliceMap(comments, func(t models.Comments) rss2.Item {
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return rss2.Item{
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Title: fmt.Sprintf("评价者：%s", t.CommentAuthor),
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Link: fmt.Sprintf("%s/p/%d#comment-%d", wpconfig.Options.Value("siteurl"), post.Id, t.CommentId),
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Creator: t.CommentAuthor,
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PubDate: t.CommentDateGmt.Format(timeFormat),
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Guid: fmt.Sprintf("%s#comment-%d", post.Guid, t.CommentId),
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Content: t.CommentContent,
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}
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})
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}
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x = rs.GetXML()
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return
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}
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func CommentsFeed(c *gin.Context) {
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if !isCacheExpired(c, commentsFeedCache.GetLastSetTime()) {
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c.Status(http.StatusNotModified)
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} else {
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r, err := commentsFeedCache.GetCache(c, time.Second, c)
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if err != nil {
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c.Status(http.StatusInternalServerError)
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c.Abort()
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c.Error(err)
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return
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}
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setFeed(r[0], c, commentsFeedCache.GetLastSetTime())
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}
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}
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func commentsFeed(args ...any) (r []string, err error) {
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c := args[0].(*gin.Context)
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commens := cache2.RecentComments(c, 10)
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rs := templateRss
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rs.Title = fmt.Sprintf("\"%s\"的评论", wpconfig.Options.Value("blogname"))
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rs.LastBuildDate = time.Now().Format(timeFormat)
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rs.AtomLink = fmt.Sprintf("%s/comments/feed", wpconfig.Options.Value("siteurl"))
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com, err := cache2.GetCommentByIds(c, helper.SliceMap(commens, func(t models.Comments) uint64 {
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return t.CommentId
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}))
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if nil != err {
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return []string{}, err
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}
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rs.Items = helper.SliceMap(com, func(t models.Comments) rss2.Item {
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post, _ := cache2.GetPostById(c, t.CommentPostId)
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plugins.PasswordProjectTitle(&post)
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desc := "评论受保护：要查看请输入密码。"
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content := t.CommentContent
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if post.PostPassword != "" {
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plugins.PasswdProjectContent(&post)
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content = post.PostContent
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} else {
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desc = digest.ClearHtml(t.CommentContent)
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content = desc
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}
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return rss2.Item{
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Title: fmt.Sprintf("%s对《%s》的评论", t.CommentAuthor, post.PostTitle),
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Link: fmt.Sprintf("%s/p/%d#comment-%d", wpconfig.Options.Value("siteurl"), post.Id, t.CommentId),
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Creator: t.CommentAuthor,
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Description: desc,
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PubDate: t.CommentDateGmt.Format(timeFormat),
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Guid: fmt.Sprintf("%s#commment-%d", post.Guid, t.CommentId),
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Content: content,
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}
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})
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r = []string{rs.GetXML()}
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return
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}
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