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viewthread.go
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viewthread.go
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package main
import (
"bytes"
"crypto/tls"
"errors"
"fmt"
"log"
"net/url"
"strings"
"sync"
"time"
"codeberg.org/FiskFan1999/gemini"
"github.com/hako/durafmt"
bolt "go.etcd.io/bbolt"
)
type Post SearchResultPost
var ThreadNotFound = errors.New("thread not found")
func ThreadViewHandler(u *url.URL, c *tls.Conn) gemini.Response {
/*
Get user priviledge, because if the thread is locked mods and admins can still reply.
*/
var userPriv UserPriviledge
fp := GetFingerprint(c)
if fp != nil {
_, userPriv, _, _ = GetUsernameFromFP(fp)
}
pathspl := strings.FieldsFunc(u.EscapedPath(), func(r rune) bool { return r == '/' })
if len(pathspl) < 2 {
return gemini.BadRequest.Response("Bad input")
}
id := pathspl[1]
var title string
var posts []Post
var isLocked bool = false
if err := db.View(func(tx *bolt.Tx) error {
/*
Get thread bucket from id
*/
allThreads := tx.Bucket(DBALLTHREADS)
if allThreads == nil {
return errors.New("allThreads == nil")
}
thread := allThreads.Bucket([]byte(id))
if thread == nil {
return ThreadNotFound
}
title = string(thread.Get([]byte("title")))
if bytes.Equal(thread.Get([]byte("locked")), []byte("1")) {
// currently locked
isLocked = true
}
/*
Collect all posts from this thread.
*/
postsIds := thread.Bucket([]byte("posts"))
if postsIds == nil {
return errors.New("postsIds == nil")
}
allPosts := tx.Bucket(DBALLPOSTS)
postsIdsCursor := postsIds.Cursor()
for _, postId := postsIdsCursor.First(); postId != nil; _, postId = postsIdsCursor.Next() {
currentPost := allPosts.Bucket(postId)
if currentPost == nil {
log.Println(currentPost, "== nil")
continue
}
currentPostStr := Post{}
currentPostStr.ID = postId
currentPostStr.Text = string(currentPost.Get([]byte("text")))
currentPostStr.Author = string(currentPost.Get([]byte("user")))
if err := (¤tPostStr.Time).UnmarshalText(currentPost.Get([]byte("time"))); err != nil {
return err
}
posts = append(posts, currentPostStr)
}
return nil
}); err != nil {
if errors.Is(err, ThreadNotFound) {
return NotFound
}
return gemini.TemporaryFailure.Error(err)
}
var writeReplyLines []string
if isLocked {
writeReplyLines = []string{"This thread is locked and not accepting new comments."}
}
if !isLocked || userPriv.Is(whichPrivCanReplyToLockedThread) { // see threads.go
writeReplyLines = append(writeReplyLines, fmt.Sprintf("%s/new/post/%s/ Write comment", gemini.Link, id))
}
lines := gemini.Lines{}
lines = append(lines, fmt.Sprintf("%s%s", gemini.Header, title))
lines = append(lines, writeReplyLines...)
lines = append(lines, "")
/*
Add posts to page
*/
var postReportOnce sync.Once
for _, p := range posts {
// lines = append(lines, fmt.Sprintf("<%s> %s", p.Author, p.Text))
lines = append(lines,
fmt.Sprintf("%s%s", gemini.Header3, DisplayUsernameAuto(p.Author)),
)
var dateLine string = fmt.Sprintf("%s/report/%s/ %s", gemini.Link, p.ID, TimeFormatForPost(p.Time))
/*
Add note about reporting, only on first post to not clutter too much
*/
postReportOnce.Do(func() { dateLine = dateLine + " (click to report)" })
lines = append(lines, dateLine)
for _, textLine := range GetLinesOfPost(p.Text) {
lines = append(lines, fmt.Sprintf("%s%s", gemini.Quote, textLine))
}
/*
Report link (/report/postID/)
*/
// lines = append(lines, fmt.Sprintf("%s/report/%s/ report", gemini.Link, p.ID))
lines = append(lines,
"",
)
}
lines = append(lines, writeReplyLines...)
return gemini.ResponseFormat{
Status: gemini.Success,
Mime: "text/gemini",
Lines: lines,
}
}
func GetLinesOfPost(text string) (out []string) {
for _, l := range strings.FieldsFunc(text, func(i rune) bool { return i == '\n' }) {
str := strings.TrimSpace(l)
if len(str) != 0 {
out = append(out, str)
}
}
return
}
func TimeFormatForPost(t time.Time) string {
/*
If time is less than 24 hours old, print
Otherwise, print UTC in some format
*/
if time.Since(t).Hours() < float64(24) {
return fmt.Sprintf("%s", durafmt.ParseShort(time.Since(t)))
}
return t.UTC().Format(time.RFC1123)
}