${this.getScrobbleBadge()}`;\n\t\t}\n\t\tif (req.error) {\n\t\t\tthrow new Chat.ErrorMessage(`${req.message}.`);\n\t\t}\n\t\tif (!buf) {\n\t\t\tthrow new Chat.ErrorMessage(`No results for '${artist ? `${artist} - ` : ``}${track}' found. Check spelling?`);\n\t\t}\n\t\treturn buf;\n\t}\n\tcheckHasKey() {\n\t\tif (!Config.lastfmkey) {\n\t\t\tthrow new Chat.ErrorMessage(`This server does not support last.fm commands. If you're the owner, you can enable them by setting up Config.lastfmkey.`);\n\t\t}\n\t}\n\tgetScrobbleBadge() {\n\t\treturn `
[powered by AudioScrobbler]
`;\n\t}\n}\n\nclass RecommendationsInterface {\n\tgetRandomRecommendation() {\n\t\tconst recs = recommendations.saved;\n\t\treturn recs[Math.floor(Math.random() * recs.length)];\n\t}\n\n\tasync add(\n\t\tartist: string, title: string, url: string, description: string,\n\t\tusername: string, tags: string[], avatar?: string\n\t) {\n\t\tartist = artist.trim();\n\t\ttitle = title.trim();\n\t\tif (this.get(artist, title)) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} is already recommended.`);\n\t\t}\n\t\tif (!/^https?:\\/\\//.test(url)) url = `https://${url}`;\n\t\tif (!YouTube.linkRegex.test(url)) {\n\t\t\tthrow new Chat.ErrorMessage(`Please provide a valid YouTube link.`);\n\t\t}\n\t\turl = url.split('&')[0];\n\t\tconst videoInfo = await YouTube.getVideoData(url);\n\t\tthis.checkTags(tags);\n\t\t// JUST in case\n\t\tif (!recommendations.saved) recommendations.saved = [];\n\t\tconst rec: Recommendation = {artist, title, videoInfo, url, description, tags, userData: {name: username}, likes: 0};\n\t\tif (!rec.tags.map(toID).includes(toID(username))) rec.tags.push(username);\n\t\tif (!rec.tags.map(toID).includes(toID(artist))) rec.tags.push(artist);\n\t\tif (avatar) rec.userData.avatar = avatar;\n\t\trecommendations.saved.push(rec);\n\t\tsaveRecommendations();\n\t}\n\n\tdelete(artist: string, title: string) {\n\t\tartist = artist.trim();\n\t\ttitle = title.trim();\n\t\tif (!recommendations.saved?.length) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} isn't recommended.`);\n\t\t}\n\t\tconst recIndex = this.getIndex(artist, title);\n\t\tif (recIndex < 0) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} isn't recommended.`);\n\t\t}\n\t\trecommendations.saved.splice(recIndex, 1);\n\t\tsaveRecommendations();\n\t}\n\n\tasync suggest(\n\t\tartist: string, title: string, url: string, description: string,\n\t\tusername: string, tags: string[], avatar?: string\n\t) {\n\t\tartist = artist.trim();\n\t\ttitle = title.trim();\n\t\tif (this.get(artist, title)) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} is already recommended.`);\n\t\t}\n\t\tif (this.get(artist, title, null, true)) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} is already suggested.`);\n\t\t}\n\t\tif (!/^https?:\\/\\//.test(url)) url = `https://${url}`;\n\t\tif (!YouTube.linkRegex.test(url)) {\n\t\t\tthrow new Chat.ErrorMessage(`Please provide a valid YouTube link.`);\n\t\t}\n\t\turl = url.split('&')[0];\n\t\tconst videoInfo = await YouTube.getVideoData(url);\n\t\tthis.checkTags(tags);\n\t\tconst rec: Recommendation = {artist, title, videoInfo, url, description, tags, userData: {name: username}, likes: 0};\n\t\tif (!rec.tags.map(toID).includes(toID(username))) rec.tags.push(username);\n\t\tif (!rec.tags.map(toID).includes(toID(artist))) rec.tags.push(artist);\n\t\tif (avatar) rec.userData.avatar = avatar;\n\t\trecommendations.suggested.push(rec);\n\t\tsaveRecommendations();\n\t}\n\n\tapproveSuggestion(submitter: string, artist: string, title: string) {\n\t\tartist = artist.trim();\n\t\ttitle = title.trim();\n\t\tconst rec = this.get(artist, title, submitter, true);\n\t\tif (!rec) {\n\t\t\tthrow new Chat.ErrorMessage(`There is no song titled '${title}' by ${artist} suggested from ${submitter.trim()}.`);\n\t\t}\n\t\tif (!recommendations.saved) recommendations.saved = [];\n\t\trecommendations.saved.push(rec);\n\t\trecommendations.suggested.splice(recommendations.suggested.indexOf(rec), 1);\n\t\tsaveRecommendations();\n\t}\n\n\tdenySuggestion(submitter: string, artist: string, title: string) {\n\t\tartist = artist.trim();\n\t\ttitle = title.trim();\n\t\tconst index = this.getIndex(artist, title, submitter, true);\n\t\tif (index < 0) {\n\t\t\tthrow new Chat.ErrorMessage(`There is no song titled '${title}' by ${artist} suggested from ${submitter.trim()}.`);\n\t\t}\n\t\trecommendations.suggested.splice(index, 1);\n\t\tsaveRecommendations();\n\t}\n\n\tasync render(rec: Recommendation, suggested = false) {\n\t\tlet buf = ``;\n\t\tbuf += `
`;\n\t\treturn buf;\n\t}\n\n\tlikeRecommendation(artist: string, title: string, liker: User) {\n\t\tconst rec = this.get(artist, title);\n\t\tif (!rec) {\n\t\t\tthrow new Chat.ErrorMessage(`The song titled '${title}' by ${artist} isn't recommended.`);\n\t\t}\n\t\tif (!rec.liked) {\n\t\t\trec.liked = {ips: [], userids: []};\n\t\t}\n\t\tif ((!Config.noipchecks && rec.liked.ips.includes(liker.latestIp)) || rec.liked.userids.includes(liker.id)) {\n\t\t\tthrow new Chat.ErrorMessage(`You've already liked this recommendation.`);\n\t\t}\n\t\trec.likes++;\n\t\trec.liked.ips.push(liker.latestIp);\n\t\trec.liked.userids.push(liker.id);\n\t\tsaveRecommendations();\n\t}\n\n\tget(artist: string, title: string, submitter: string | null = null, fromSuggestions = false) {\n\t\tlet recs = recommendations.saved;\n\t\tif (fromSuggestions) recs = recommendations.suggested;\n\t\treturn recs.find(x => (\n\t\t\ttoID(x.artist) === toID(artist) &&\n\t\t\ttoID(x.title) === toID(title) &&\n\t\t\t(!submitter || toID(x.userData.name) === toID(submitter))\n\t\t));\n\t}\n\n\tgetIndex(artist: string, title: string, submitter: string | null = null, fromSuggestions = false) {\n\t\tlet recs = recommendations.saved;\n\t\tif (fromSuggestions) recs = recommendations.suggested;\n\t\treturn recs.findIndex(x => (\n\t\t\ttoID(x.artist) === toID(artist) &&\n\t\t\ttoID(x.title) === toID(title) &&\n\t\t\t(!submitter || toID(x.userData.name) === toID(submitter))\n\t\t));\n\t}\n\n\tcheckTags(tags: string[]) {\n\t\tconst cleansedTags = new Set();\n\t\tfor (const tag of tags) {\n\t\t\tif (!toID(tag)) throw new Chat.ErrorMessage(`Empty tag detected.`);\n\t\t\tif (cleansedTags.has(toID(tag))) {\n\t\t\t\tthrow new Chat.ErrorMessage(`Duplicate tag: ${tag.trim()}`);\n\t\t\t}\n\t\t\tcleansedTags.add(toID(tag));\n\t\t}\n\t}\n}\n\nexport const LastFM = new LastFMInterface();\nexport const Recs = new RecommendationsInterface();\n\nexport const commands: Chat.ChatCommands = {\n\tregisterlastfm(target, room, user) {\n\t\tif (!target) return this.parse(`/help registerlastfm`);\n\t\tthis.checkChat(target);\n\t\ttarget = this.filter(target) || '';\n\t\tif (!target) {\n\t\t\tthrow new Chat.ErrorMessage(`The provided account name has phrases that PS doesn't allow.`);\n\t\t}\n\t\tLastFM.validateAccountName(target);\n\t\tthis.sendReply(LastFM.addAccountName(user.id, target.trim()));\n\t},\n\tregisterlastfmhelp: [\n\t\t`/registerlastfm [username] - Adds the provided [username] to the last.fm database for scrobbling.`,\n\t\t`Usernames can only be 2-15 characters long, must start with a letter, and can only contain letters, numbers, hyphens, and underscores.`,\n\t],\n\n\tasync lastfm(target, room, user) {\n\t\tthis.checkChat();\n\t\tif (!user.autoconfirmed) return this.errorReply(`You cannot use this command while not autoconfirmed.`);\n\t\tthis.runBroadcast(true);\n\t\tconst targetUsername = this.splitUser(target).targetUsername || (user.named ? user.name : '');\n\t\tconst username = LastFM.getAccountName(targetUsername);\n\t\tthis.sendReplyBox(await LastFM.getScrobbleData(username, targetUsername));\n\t},\n\tlastfmhelp: [\n\t\t`/lastfm [username] - Displays the last scrobbled song for the person using the command or for [username] if provided.`,\n\t\t`To link up your last.fm account, check out \"/help registerlastfm\".`,\n\t],\n\n\tasync track(target, room, user) {\n\t\tif (!target) return this.parse('/help track');\n\t\tthis.checkChat();\n\t\tif (!user.autoconfirmed) return this.errorReply(`You cannot use this command while not autoconfirmed.`);\n\t\tconst [track, artist] = this.splitOne(target);\n\t\tif (!track) return this.parse('/help track');\n\t\tthis.runBroadcast(true);\n\t\tthis.sendReplyBox(await LastFM.tryGetTrackData(track, artist || undefined));\n\t},\n\ttrackhelp: [\n\t\t`/track [song name], [artist] - Displays the most relevant search result to the song name (and artist if specified) provided.`,\n\t],\n\n\taddrec: 'addrecommendation',\n\tasync addrecommendation(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.checkCan('show', null, room);\n\t\tconst [artist, title, url, description, ...tags] = target.split('|').map(x => x.trim());\n\t\tif (!(artist && title && url && description && tags?.length)) {\n\t\t\treturn this.parse(`/help addrecommendation`);\n\t\t}\n\n\t\tconst cleansedTags = tags.map(x => x.trim());\n\t\tawait Recs.add(artist, title, url, description, user.name, cleansedTags, String(user.avatar));\n\n\t\tthis.privateModAction(`${user.name} added a recommendation for '${title}' by ${artist}.`);\n\t\tthis.modlog(`RECOMMENDATION`, null, `add: '${toID(title)}' by ${toID(artist)}`);\n\t},\n\taddrecommendationhelp: [\n\t\t`/addrecommendation artist | song title | url | description | tag1 | tag2 | ... - Adds a song recommendation. Requires: + % @ * # &`,\n\t],\n\n\tdelrec: 'removerecommendation',\n\tremoverecommendation(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\t\tconst [artist, title] = target.split(`|`).map(x => x.trim());\n\t\tif (!(artist && title)) return this.parse(`/help removerecommendation`);\n\t\tconst rec = Recs.get(artist, title);\n\t\tif (!rec) throw new Chat.ErrorMessage(`Recommendation not found.`);\n\t\tif (toID(rec.userData.name) !== user.id) {\n\t\t\tthis.checkCan('mute', null, room);\n\t\t}\n\n\t\tRecs.delete(artist, title);\n\n\t\tthis.privateModAction(`${user.name} removed a recommendation for '${title}' by ${artist}.`);\n\t\tthis.modlog(`RECOMMENDATION`, null, `remove: '${toID(title)}' by ${toID(artist)}`);\n\t},\n\tremoverecommendationhelp: [\n\t\t`/removerecommendation artist | song title - Removes a song recommendation. Requires: % @ * # &`,\n\t\t`If you added a recommendation, you can remove it on your own without being one of the required ranks.`,\n\t],\n\n\tsuggestrec: 'suggestrecommendation',\n\tasync suggestrecommendation(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tif (!target) {\n\t\t\treturn this.parse('/help suggestrecommendation');\n\t\t}\n\t\tthis.checkChat(target);\n\t\tif (!user.autoconfirmed) return this.errorReply(`You cannot use this command while not autoconfirmed.`);\n\t\tconst [artist, title, url, description, ...tags] = target.split('|').map(x => x.trim());\n\t\tif (!(artist && title && url && description && tags?.length)) {\n\t\t\treturn this.parse(`/help suggestrecommendation`);\n\t\t}\n\n\t\tconst cleansedTags = tags.map(x => x.trim());\n\t\tawait Recs.suggest(artist, title, url, description, user.name, cleansedTags, String(user.avatar));\n\t\tthis.sendReply(`Your suggestion for '${title}' by ${artist} has been submitted.`);\n\t\tconst html = await Recs.render({\n\t\t\tartist, title, url, description,\n\t\t\tuserData: {name: user.name, avatar: String(user.avatar)},\n\t\t\ttags: cleansedTags, likes: 0, videoInfo: null,\n\t\t}, true);\n\t\troom.sendRankedUsers(`|html|${html}`, '%');\n\t},\n\tsuggestrecommendationhelp: [\n\t\t`/suggestrecommendation artist | song title | url | description | tag1 | tag2 | ... - Suggest a song recommendation.`,\n\t],\n\n\tapprovesuggestion(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.checkCan('mute', null, room);\n\t\tconst [submitter, artist, title] = target.split('|').map(x => x.trim());\n\t\tif (!(submitter && artist && title)) return this.parse(`/help approvesuggestion`);\n\n\t\tRecs.approveSuggestion(submitter, artist, title);\n\n\t\tthis.privateModAction(`${user.name} approved a suggested recommendation from ${submitter} for '${title}' by ${artist}.`);\n\t\tthis.modlog(`RECOMMENDATION`, null, `approve: '${toID(title)}' by ${toID(artist)} from ${submitter}`);\n\t},\n\tapprovesuggestionhelp: [\n\t\t`/approvesuggestion submitter | artist | strong title - Approve a submitted song recommendation. Requires: % @ * # &`,\n\t],\n\n\tdenysuggestion(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.checkCan('mute', null, room);\n\t\tconst [submitter, artist, title] = target.split('|').map(x => x.trim());\n\t\tif (!(submitter && artist && title)) return this.parse(`/help approvesuggestion`);\n\n\t\tRecs.denySuggestion(submitter, artist, title);\n\n\t\tthis.privateModAction(`${user.name} denied a suggested recommendation from ${submitter} for '${title}' by ${artist}.`);\n\t\tthis.modlog(`RECOMMENDATION`, null, `deny: '${toID(title)}' by ${toID(artist)} from ${submitter}`);\n\t},\n\tdenysuggestionhelp: [\n\t\t`/denysuggestion submitter | artist | strong title - Deny a submitted song recommendation. Requires: % @ * # &`,\n\t],\n\n\trec: 'recommendation',\n\tsearchrec: 'recommendation',\n\tviewrec: 'recommendation',\n\tsearchrecommendation: 'recommendation',\n\tviewrecommendation: 'recommendation',\n\trandrec: 'recommendation',\n\trandomrecommendation: 'recommendation',\n\tasync recommendation(target, room, user) {\n\t\tif (!recommendations.saved.length) {\n\t\t\tthrow new Chat.ErrorMessage(`There are no recommendations saved.`);\n\t\t}\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.runBroadcast();\n\t\tif (!target) {\n\t\t\treturn this.sendReply(`|html|${await Recs.render(Recs.getRandomRecommendation())}`);\n\t\t}\n\t\tconst matches: Recommendation[] = [];\n\t\ttarget = target.slice(0, 300);\n\t\tconst args = target.split(',');\n\t\tfor (const rec of recommendations.saved) {\n\t\t\tif (!args.every(x => rec.tags.map(toID).includes(toID(x)))) continue;\n\t\t\tmatches.push(rec);\n\t\t}\n\t\tif (!matches.length) {\n\t\t\tthrow new Chat.ErrorMessage(`No matches found.`);\n\t\t}\n\t\tconst sample = Utils.shuffle(matches)[0];\n\t\tthis.sendReply(`|html|${await Recs.render(sample)}`);\n\t},\n\trecommendationhelp: [\n\t\t`/recommendation [key1, key2, key3, ...] - Displays a random recommendation that matches all keys, if one exists.`,\n\t\t`If no arguments are provided, a random recommendation is shown.`,\n\t\t`/addrecommendation artist | song title | url | description | tag1 | tag2 | ... - Adds a song recommendation. Requires: + % @ * # &`,\n\t\t`/removerecommendation artist | song title - Removes a song recommendation. Requires: % @ * # &`,\n\t\t`If you added a recommendation, you can remove it on your own without being one of the required ranks.`,\n\t\t`/suggestrecommendation artist | song title | url | description | tag1 | tag2 | ... - Suggest a song recommendation.`,\n\t],\n\n\tlikerec: 'likerecommendation',\n\tlikerecommendation(target, room, user, connection) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tconst [artist, title] = target.split('|').map(x => x.trim());\n\t\tif (!(artist && title)) return this.parse(`/help likerecommendation`);\n\t\tRecs.likeRecommendation(artist, title, user);\n\t\tthis.sendReply(`You liked '${title}' by ${artist}.`);\n\t},\n\tlikerecommendationhelp: [\n\t\t`/likerecommendation artist | title - Upvotes a recommendation for the provided artist and title.`,\n\t],\n\n\tviewrecs: 'viewrecommendations',\n\tviewrecommendations(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.parse(`/j view-recommendations-${room.roomid}`);\n\t},\n\tviewrecommendationshelp: [\n\t\t`/viewrecommendations OR /viewrecs - View all recommended songs.`,\n\t],\n\n\tviewsuggestions: 'viewsuggestedrecommendations',\n\tviewsuggestedrecs: 'viewsuggestedrecommendations',\n\tviewsuggestedrecommendations(target, room, user) {\n\t\troom = this.requireRoom('thestudio' as RoomID);\n\t\tthis.parse(`/j view-suggestedrecommendations-${room.roomid}`);\n\t},\n\tviewsuggestedrecommendationshelp: [\n\t\t`/viewsuggestedrecommendations OR /viewsuggestions - View all suggested recommended songs. Requires: % @ * # &`,\n\t],\n};\n\nexport const pages: Chat.PageTable = {\n\tasync recommendations(query, user, connection) {\n\t\tconst room = this.requireRoom();\n\t\tthis.checkCan('mute', null, room);\n\t\tif (!user.inRooms.has(room.roomid)) throw new Chat.ErrorMessage(`You must be in ${room.title} to view this page.`);\n\t\tthis.title = 'Recommendations';\n\t\tlet buf = `
`;\n\t\t}\n\t\treturn buf;\n\t},\n\tasync suggestedrecommendations(query, user, connection) {\n\t\tconst room = this.requireRoom();\n\t\tthis.checkCan('mute', null, room);\n\t\tif (!user.inRooms.has(room.roomid)) throw new Chat.ErrorMessage(`You must be in ${room.title} to view this page.`);\n\t\tthis.title = 'Suggested Recommendations';\n\t\tlet buf = `