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package autocorrect
import (
"regexp"
"strings"
)
const maxNickLength = 25
var fixNickRegex = regexp.MustCompile(`[\W\s\d]`)
var accountNickRegexes = []*regexp.Regexp{
regexp.MustCompile(`anilist.co/user/(.*)`),
regexp.MustCompile(`anilist.co/animelist/(.*)`),
regexp.MustCompile(`kitsu.io/users/(.*?)/library`),
regexp.MustCompile(`kitsu.io/users/(.*)`),
regexp.MustCompile(`anime-planet.com/users/(.*?)/anime`),
regexp.MustCompile(`anime-planet.com/users/(.*)`),
regexp.MustCompile(`myanimelist.net/profile/(.*)`),
regexp.MustCompile(`myanimelist.net/animelist/(.*?)\?`),
regexp.MustCompile(`myanimelist.net/animelist/(.*)`),
regexp.MustCompile(`myanimelist.net/(.*)`),
regexp.MustCompile(`myanimelist.com/(.*)`),
regexp.MustCompile(`twitter.com/(.*)`),
regexp.MustCompile(`osu.ppy.sh/u/(.*)`),
}
var animeLinkRegex = regexp.MustCompile(`notify.moe/anime/(\d+)`)
var osuBeatmapRegex = regexp.MustCompile(`osu.ppy.sh/s/(\d+)`)
// Tag converts links to correct tags automatically.
func Tag(tag string) string {
tag = strings.TrimSpace(tag)
tag = strings.TrimSuffix(tag, "/")
// Anime
matches := animeLinkRegex.FindStringSubmatch(tag)
if len(matches) > 1 {
return "anime:" + matches[1]
}
// Osu beatmap
matches = osuBeatmapRegex.FindStringSubmatch(tag)
if len(matches) > 1 {
return "osu-beatmap:" + matches[1]
}
return tag
}
// UserNick automatically corrects a username.
func UserNick(nick string) string {
nick = fixNickRegex.ReplaceAllString(nick, "")
if nick == "" {
return nick
}
nick = strings.Trim(nick, "_")
if nick == "" {
return ""
}
if len(nick) > maxNickLength {
nick = nick[:maxNickLength]
}
return strings.ToUpper(string(nick[0])) + nick[1:]
}
// AccountNick automatically corrects the username/nick of an account.
func AccountNick(nick string) string {
for _, regex := range accountNickRegexes {
matches := regex.FindStringSubmatch(nick)
if len(matches) > 1 {
nick = matches[1]
return nick
}
}
return nick
}
// PostText fixes common mistakes in post texts.
func PostText(text string) string {
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text = strings.ReplaceAll(text, "http://", "https://")
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text = strings.TrimSpace(text)
return text
}
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// ThreadTitle fixes a thread title by trimming spaces.
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func ThreadTitle(title string) string {
return strings.TrimSpace(title)
}
// Website fixed common website mistakes.
func Website(url string) string {
// Disallow links that aren't actual websites,
// just tracker links.
if IsTrackerLink(url) {
return ""
}
url = strings.TrimSpace(url)
url = strings.TrimPrefix(url, "http://")
url = strings.TrimPrefix(url, "https://")
url = strings.TrimSuffix(url, "/")
return url
}
// IsTrackerLink returns true if the URL is a tracker link.
func IsTrackerLink(url string) bool {
return strings.Contains(url, "myanimelist.net/") || strings.Contains(url, "anilist.co/") || strings.Contains(url, "kitsu.io/") || strings.Contains(url, "kissanime.")
}