website/pkg/controller/forum/thread.go

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package forum
import (
"net/http"
"regexp"
"strconv"
2022-08-26 04:21:46 +00:00
"code.nonshy.com/nonshy/website/pkg/config"
"code.nonshy.com/nonshy/website/pkg/log"
"code.nonshy.com/nonshy/website/pkg/models"
"code.nonshy.com/nonshy/website/pkg/session"
"code.nonshy.com/nonshy/website/pkg/templates"
)
var ThreadPathRegexp = regexp.MustCompile(`^/forum/thread/(\d+)$`)
// Thread view for the comment thread body of a forum post.
func Thread() http.HandlerFunc {
tmpl := templates.Must("forum/thread.html")
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Parse the path parameters
var (
forum *models.Forum
thread *models.Thread
)
if m := ThreadPathRegexp.FindStringSubmatch(r.URL.Path); m == nil {
log.Error("Regexp failed to parse: %s", r.URL.Path)
templates.NotFoundPage(w, r)
return
} else {
if threadID, err := strconv.Atoi(m[1]); err != nil {
session.FlashError(w, r, "Invalid thread ID in the address bar.")
templates.Redirect(w, "/forum")
return
} else {
// Load the thread.
if found, err := models.GetThread(uint64(threadID)); err != nil {
session.FlashError(w, r, "That thread does not exist.")
templates.Redirect(w, "/forum")
return
} else {
thread = found
forum = &thread.Forum
}
}
}
// Get the current user.
currentUser, err := session.CurrentUser(r)
if err != nil {
session.FlashError(w, r, "Couldn't get current user: %s", err)
templates.Redirect(w, "/")
return
}
// Ping the view count on this thread.
if err := thread.View(currentUser.ID); err != nil {
log.Error("Couldn't ping view count on thread %d: %s", thread.ID, err)
}
// Paginate the comments on this thread.
var pager = &models.Pagination{
Page: 1,
PerPage: config.PageSizeThreadList,
Sort: "created_at asc",
}
pager.ParsePage(r)
comments, err := models.PaginateComments(currentUser, "threads", thread.ID, pager)
if err != nil {
session.FlashError(w, r, "Couldn't paginate comments: %s", err)
templates.Redirect(w, "/")
return
}
// Get the like map for these comments.
commentIDs := []uint64{}
for _, com := range comments {
commentIDs = append(commentIDs, com.ID)
}
commentLikeMap := models.MapLikes(currentUser, "comments", commentIDs)
// Is the current user subscribed to notifications on this thread?
_, isSubscribed := models.IsSubscribed(currentUser, "threads", thread.ID)
var vars = map[string]interface{}{
"Forum": forum,
"Thread": thread,
"Comments": comments,
"LikeMap": commentLikeMap,
"Pager": pager,
"IsSubscribed": isSubscribed,
}
if err := tmpl.Execute(w, r, vars); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
}