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index.js
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class TekstowoAPIRequestOptions {
/**
* @param {string} url
* @param {RequestInit} fetchOptions
*/
constructor(url, fetchOptions) {
this.url = url;
this.fetchOptions = fetchOptions;
}
}
/**
* @enum {number}
*/
const TekstowoAPIProxyMethods = {
/** @type {number} */
None: 0,
/** @type {number} */
AllOrigins: 1,
/** @type {number} */
SirJoshProxy: 2,
};
// eslint-disable-next-line no-unused-vars
// class TekstowoAPILyricsID extends String { }
/**
* @typedef {String} TekstowoAPILyricsID
*/
// eslint-disable-next-line no-unused-vars
// class TekstowoAPIArtistID extends String { }
/**
* @typedef {String} TekstowoAPIArtistID
*/
class TekstowoAPISearchResults {
/**
* @param {Object.<string, TekstowoAPILyricsID>} songs
* @param {Object.<string, TekstowoAPIArtistID>} artists
* @param {number} pageCount
*/
constructor(songs, artists, pageCount) {
this.songs = songs;
this.artists = artists;
this.pageCount = pageCount;
}
}
class TekstowoAPIArtistProfile {
/**
* @param {string} displayName
* @param {string} artistDescription
* @param {Array<{ hd: string, small: string }>} images
* @param {Array<{ year: number, name: string }>} discography
* @param {number | undefined} commentCount
* @param {string | undefined} internalId
*/
constructor(displayName, artistDescription, images, discography, commentCount, internalId) {
this.displayName = displayName;
this.artistDescription = artistDescription;
this.images = images;
this.discography = discography;
this.commentCount = commentCount;
this.internalId = internalId;
}
}
const SortMode = {
get alphabetically() {
return "alfabetycznie";
},
get popular() {
return "popularne";
},
get best() {
return "najlepsze";
},
get date() {
return "data";
},
};
const SortDirection = {
get descending() {
return "malejaco";
},
get ascending() {
// eslint-disable-next-line no-inline-comments
return ""; // ascending is default (?)
},
};
const Months = [
"stycznia",
"lutego",
"marca",
"kwietnia",
"maja",
"czerwca",
"lipca",
"sierpnia",
"września",
"października",
"listopada",
"grudnia",
];
/**
* @param {string} sortMode
*/
const AutomaticSortDirection = (sortMode) => {
if (sortMode === SortMode.alphabetically) {
return SortDirection.ascending;
}
if (sortMode === SortMode.date) {
// technically this is wrong but it's a workaround
return SortDirection.ascending;
}
return SortDirection.descending;
};
const ConstantURLPaths = {
song: "piosenka",
search: "szukaj",
artistSongs: "piosenki_artysty",
artistProfile: "wykonawca",
};
const TekstowoAPIUrls = {
/**
* @param {TekstowoAPILyricsID} id
*/
LYRICS: (id) => { return `https://www.tekstowo.pl/${ConstantURLPaths.song},${id}.html`; },
SEARCH: (query, page = 1) => {
let baseUrl = `https://www.tekstowo.pl/${ConstantURLPaths.search},`;
baseUrl += query + ",";
baseUrl += "strona," + page;
return baseUrl + ".html";
},
/**
* @param {TekstowoAPIArtistID} id
*/
ARTIST_SONGS: (id, sortMode = SortMode.alphabetically, sortDir = (AutomaticSortDirection(sortMode)), page = 1) => {
return `https://www.tekstowo.pl/${ConstantURLPaths.artistSongs},${id},${sortMode},${sortDir},strona,${page}.html`;
},
/**
* @param {TekstowoAPIArtistID} id
*/
ARTIST_PROFILE: (id) => {
return `https://www.tekstowo.pl/${ConstantURLPaths.artistProfile},${id}.html`;
},
__TEKSTOWO_OFFICIAL_API_USE_RARELY: {
MORE_COMMENTS: (internalId, offset = 0, mode = 'S') => {
return `https://www.tekstowo.pl/js,moreComments,${mode},${internalId},${offset}`;
},
},
};
class TekstowoAPILyrics {
/**
* @param {string} original
* @param {string} translated
* @param {{}} metadata
* @param {string} lyricsName
* @param {string} video YouTube video ID
* @param {string} internalId ID used by vote system or comments
* @param {boolean} [aiGeneratedTranslation=false] Is the translation made by AI?
* @param {number | undefined} commentCount How many comments are on this lyrics page?
*/
constructor(original, translated, metadata, lyricsName, video, internalId, aiGeneratedTranslation = false, commentCount) {
this.original = original;
this.translated = translated;
// eslint-disable-next-line no-inline-comments
if (metadata) // we don't want "undefined" to be printed out
this.metadata = metadata;
// eslint-disable-next-line no-inline-comments
if (lyricsName) // we don't want "undefined" to be printed out
this.lyricsName = lyricsName;
if (video)
this.videoId = video;
if (internalId)
this.internalId = internalId;
this.aiGeneratedTranslation = aiGeneratedTranslation;
this.commentCount = commentCount;
}
}
/**
* just an Object
* @typedef TekstowoAPILyricsMetadata
*/
class TekstowoAPI {
/**
* Creates a new TekstowoAPI instance
* @param {fetch} FetchImpl
* @param {TekstowoAPIProxyMethods} proxyMetod
*/
constructor(FetchImpl, proxyMetod = TekstowoAPIProxyMethods.AllOrigins) {
if (!(typeof FetchImpl === 'function'))
FetchImpl = fetch;
/**
* @type {fetch}
*/
this.FetchImpl = FetchImpl;
this.proxyMetod = proxyMetod;
this.Sorting = {
SortMode,
SortDirection,
};
/**
* @type {ConstantURLPaths}
*/
this.ConstantURLPaths = null;
Object.defineProperty(this, "ConstantURLPaths", {
get() {
return ConstantURLPaths;
},
});
}
/**
* Makes a request using TekstowoAPI#FetchImpl.
* @see TekstowoAPI#FetchImpl
* @param {TekstowoAPIRequestOptions} options
* @returns {Promise<Response>}
*/
async makeRequest(options) {
const localFetch = this.FetchImpl;
return await localFetch(options.url, options.fetchOptions);
}
/**
* Selects a proxy using TekstowoAPI#proxyMetod.
* @see TekstowoAPI#proxyMetod
* @param {string} url
* @returns {string}
*/
proxyThisUrl(url) {
switch (this.proxyMetod) {
/* https://github.com/gnuns/allorigins */
case TekstowoAPIProxyMethods.AllOrigins:
return "https://api.allorigins.win/get?url=" + encodeURIComponent(url);
/* https://github.com/SirJosh3917/cors-get-proxy */
case TekstowoAPIProxyMethods.SirJoshProxy:
return "https://cors-get-proxy.sirjosh.workers.dev/?url=" + encodeURIComponent(url);
default:
return url;
}
}
/**
* Downloads and parses lyrics page for specified arguments.
* @param {TekstowoAPILyricsID} songId
* @param {Object} options Options for extraction. Providing a boolean here is deprecated.
* @param {boolean} options.withMetadata
* @param {boolean} options.withVideoId
* @returns {Promise<TekstowoAPILyrics | null>}
*/
async extractLyrics(songId, options = {}) {
const { withMetadata, withVideoId } = (typeof options == 'boolean' ? { withMetadata: options } : options);
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.LYRICS(songId)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
const responseText = unescapeJsonString(await response.text());
const fail = responseText.replace(/\n{2,}/g, '\n').split("<title>")[1].split("</title>")[0].includes("404");
if (fail)
return null;
// const lyricsNormal = (responseText.split(`inner-text">`)[1].split("</div>")[0].replace(/<br \/>/g, '\n')).replace(/\r/g, '').replace(/\n{2,}/g, '\n');
const lyricsNormal = (responseText.split(`inner-text">`)[1].split("</div>")[0].replace(/\n/g, '').replace(/<br \/>/g, '\n')).replace(/\r/g, '');
// const lyricsTranslated = (responseText.split(`inner-text">`)[2].split("</div>")[0].replace(/<br \/>/g, '\n')).replace(/\r/g, '').replace(/\n{2,}/g, '\n');
// eslint-disable-next-line no-inline-comments
const aiGeneratedTranslation = responseText.includes("inner-text auto-translation"); // should not be hardcoded here, TODO
const extractTranslation = () => {
const translationSources = [
{
str: `inner-text">`,
indx: 2,
},
{
str: `inner-text ">`,
indx: 1,
},
{
str: `inner-text auto-translation">`,
indx: 1,
},
];
const applyMod = x => {
return x.split("</div>")[0].replace(/\n/g, '').replace(/<br \/>/g, '\n');
};
let target = null;
let curr = 0;
// eslint-disable-next-line no-constant-condition
while (true) {
if (curr >= translationSources.length)
break;
target = responseText.split(translationSources[curr].str)[translationSources[curr].indx];
if (target != undefined)
return applyMod(target);
curr++;
}
return "Translation search failed";
};
// const lyricsTranslated = ((responseText.split(`inner-text">`)[2] ?? responseText.split(`inner-text ">`)[1]).split("</div>")[0].replace(/\n/g, '').replace(/<br \/>/g, '\n')).replace(/\r/g, '');
const lyricsTranslated = extractTranslation().replace(/\r/g, '');
const parsedName = responseText.split('<h1 ')[1].split("</h1>")[0].split(`">`)[1];
const metaData = withMetadata === true ? await this.getMetadata(responseText, true) : undefined;
const findVideoId = () => {
return responseText.includes("//filmiki4.maxart.pl/tplayer3n/#")
? new URL("http://localhost/?" + responseText.split("//filmiki4.maxart.pl/tplayer3n/#")[1].split("\"")[0]).searchParams.get("videoId")
: null;
};
const findVideoId2 = () => {
return responseText.includes("//www.youtube.com/embed/")
? new URL("http://localhost/?videoId=" + responseText.split("//www.youtube.com/embed/")[1].split("\"")[0]).searchParams.get("videoId")
: null;
};
const videoId = withVideoId === true ? (findVideoId() ?? findVideoId2()) : null;
const internalId = responseText.split("ajxRankSong('Up',")[1].split(")")[0];
const commentCount = responseText.includes("Komentarze (") ? responseText.split("Komentarze (")[1].split("):")[0] : undefined;
return new TekstowoAPILyrics(lyricsNormal, lyricsTranslated, metaData, parsedName, videoId, internalId, aiGeneratedTranslation, commentCount);
}
/**
* Downloads and parses search result page for specified arguments.
* @deprecated Use `search` instead.
* @param {string} artist
* @param {string} songName
* @param {number} page
* @param {boolean} includePageCount Adds undocumented property, "INTERNAL_PAGE_COUNT" (not-enumerable) with value returned by TekstowoAPI#getPagesForSong.
* @returns {Promise<Object.<string, TekstowoAPILyricsID>>}
*/
// async searchLyrics(artist, songName, page, includePageCount = false) {
// // if (artist == "")
// // artist = undefined;
// const requestOptions = new TekstowoAPIRequestOptions(
// this.proxyThisUrl(TekstowoAPIUrls.SEARCH(artist, songName, page)), { method: "GET" },
// );
// const response = await this.makeRequest(requestOptions);
// const responseText = unescapeJsonString(await response.text());
// const base1 = responseText.split(`:</h2>`)[1].split(`<h2 class="`)[0];
// const extractedIds = getTextBetween(base1, `<a href="/piosenka,`, `.html" class="`);
// // const extractedNames = getTextBetween(base1, `<a href="/piosenka,`, `.html" class="`);
// /**
// * @type {Object.<string, TekstowoAPILyricsID>}
// */
// const base2 = {};
// for (let i = 0; i < extractedIds.length; i++) {
// const element = extractedIds[i];
// const name = base1.split(`<a href="/piosenka,` + element + `.html" class="title" title="`)[1].split(`">`)[0];
// base2[name] = element;
// }
// if (includePageCount)
// Object.defineProperty(base2, "INTERNAL_PAGE_COUNT", { value: await this.getPagesForSong(artist, songName, responseText), enumerable: false });
// return base2;
// }
async searchLyrics(artist, songName, page, includePageCount = false) {
return await this.search(artist, songName, { page, includePageCount, onlySongs: true });
}
/**
* Downloads and parses search result page for specified arguments.
* @param {string} query
* @param {Object} options
* @param {number} options.page
* @param {boolean} options.includePageCount If `onlyArtists` or `onlySongs` is true, adds undocumented property, "INTERNAL_PAGE_COUNT" (not-enumerable) with value returned by TekstowoAPI#getPagesForSong. If not, sets the `pageCount` property of TekstowoAPISearchResults.
* @param {boolean} options.onlyArtists If true, skips extracting songs and returns only artist list.
* @param {boolean} options.onlySongs If true, skips extracting artists and returns only song list.
* @returns {Promise<Object.<string, TekstowoAPILyricsID | TekstowoAPIArtistID> | TekstowoAPISearchResults>}
*/
async search(query = "", options, legacyOptions) {
if (typeof options == "string") {
const old_ = options;
options = legacyOptions;
// eslint-disable-next-line no-unused-vars
query += "+" + old_;
}
const { page, includePageCount, onlySongs, onlyArtists } = options;
if (onlyArtists === true && onlySongs === true)
throw new Error("Wong usage! Cannot have `onlySongs` and `onlyArtists` both true!");
/* basic stuff */
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.SEARCH(query, page)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
const responseText = unescapeJsonString(await response.text());
// const baseForScrapping = responseText.split(`:</h2>`)[1].split(`<h2 class="`)[0];
const baseForScrapping = responseText.split(`:</h2>`);
// const songsNum = 1;
const rawSongs = baseForScrapping[1].split("`<h2 class=")[0].replace(/\n/g, "").replace(/ {4,}/g, ' ');
const rawArtists = baseForScrapping.length <= 2 ? "" : baseForScrapping[2].split(`<nav`)[0].replace(/\n/g, "").replace(/ {4,}/g, ' ');
const returnVal = new TekstowoAPISearchResults();
if (includePageCount === true)
returnVal.pageCount = await this.getPagesForQuery(query, responseText);
// debugger;
const extractSongsList = async () => {
/**
* @type {Object.<string, TekstowoAPILyricsID>}
*/
const base2 = {};
const splitTarget = `<a href="/${ConstantURLPaths.song},`;
const extractedIds = getTextBetween(rawSongs, splitTarget, `.html" class="`);
for (let i = 0; i < extractedIds.length; i++) {
const element = extractedIds[i];
const name = rawSongs.split(splitTarget + element + `.html" class="title" title="`)[1].split(`">`)[0];
base2[name] = element;
}
if (includePageCount === true && onlySongs === true)
Object.defineProperty(base2, "INTERNAL_PAGE_COUNT", { value: returnVal.pageCount, enumerable: false });
return base2;
};
const extractArtistsList = async () => {
/**
* @type {Object.<string, TekstowoAPIArtistID>}
*/
const base2 = {};
const splitTarget = `<a href="/${ConstantURLPaths.artistSongs},`;
const extractedIds = getTextBetween(rawArtists, splitTarget, `.html" class="`);
for (let i = 0; i < extractedIds.length; i++) {
const element = extractedIds[i];
const name = rawArtists.split(splitTarget + element + `.html" class="title" title="`)[1].split(`">`)[0];
base2[name] = element;
}
if (includePageCount === true && onlyArtists === true)
Object.defineProperty(base2, "INTERNAL_PAGE_COUNT", { value: returnVal.pageCount, enumerable: false });
return base2;
};
if (onlySongs === true)
return await extractSongsList();
else if (onlyArtists === true)
return await extractArtistsList();
else {
returnVal.songs = await extractSongsList();
returnVal.artists = await extractArtistsList();
return returnVal;
}
}
/**
* @deprecated Use getPagesForQuery
*/
async getPagesForSong(artist, songName, skipFetch = "", from = 1) {
return this.getPagesForQuery(`${artist}+${songName}`, skipFetch, from);
}
/**
* Downloads and parses search result page and extracts pages count for specified arguments.
* Alternatively, if skipFetch is not empty (""), re-fetching will be skipped and it will use the supplied HTML string.
* @param {string} query
* @param {string} skipFetch
* @param {number} from Debug only, don't use
* @returns {Promise<number>}
*/
async getPagesForQuery(query, skipFetch = "", from = 1) {
if (skipFetch == "") {
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.SEARCH(query, from)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
skipFetch = unescapeJsonString(await response.text());
}
const responseText = skipFetch.split("\n").join("");
const base1 = getTextBetween(responseText, `<li class="page-item"><a class="page-link" href="`, `.html" `);
const last = base1[base1.length - 1];
if (!last)
return 1;
// const duplicates = getDuplicates(base1);
// const lastNum = last.split(",strona,").length > 1 ? last.split(",strona,")[1] : 1;
const lastNum = last.split(",strona,")[1];
const base2 = getTextBetween(responseText, `<a class="page-link" href="`, `</a>`);
const tested = base2[base2.length - 1].includes(`>>`) ? base2[base2.length - 1].split("strona,")[1].split(".html")[0] : null;
// const filtered = base2.filter(x => x.includes(`<<`) || x.includes(`>>`));
const final = parseInt(lastNum);
if (tested == null && base2[0].includes(`<<`))
return final + 1;
if (tested != null && parseInt(tested) == final)
return final;
// if (filtered.length == 1)
// final++;
// const final = parseInt(lastNum);
// const split = getTextBetween(responseText, `<nav aria-label="`, `</nav>`);
// const altMethod = getTextBetween(split[0], `title="`, `"`).length;
// if (Math.abs(final - altMethod) > 1)
// return final;
// return altMethod;
return final;
}
/**
* Downloads and parses search result page, then from list of results selects closest name match for specified arguments.
* @param {string} artist
* @param {string} songName
* @returns {Promise<TekstowoAPILyrics | null>}
*/
async getLyrics(artist, songName) {
if (artist == '')
artist = undefined;
// compare strings
const results = await this.searchLyrics(artist, songName);
const resultsMod = Object.keys(results).map(x => x.split(" - ")[1]);
const resultsFinal = artist ? Object.keys(results) : resultsMod;
const finalSearchString = artist ? artist + " - " + songName : songName;
const a = findClosestString(levenshteinDistanceArray(resultsFinal, finalSearchString));
// return a.closestString;
// console.log(results);
// console.log(a.closestString);
const toExtract = resultsFinal.indexOf(a.closestString);
return await this.extractLyrics(Object.values(results)[toExtract]);
}
/**
* Downloads, parses lyrics page and extracts "metrics" section for specified arguments.
* Alternatively, if useHTML is true, accepts HTML string from songIdOrHtml.
* @param {TekstowoAPILyricsID | string} songIdOrHtml
* @param {Boolean} useHTML
* @returns {Promise<TekstowoAPILyricsMetadata | null>}
*/
async getMetadata(songIdOrHtml, useHTML = false) {
let responseText = null;
if (!useHTML) {
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.LYRICS(songIdOrHtml)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
responseText = unescapeJsonString(await response.text());
const fail = responseText.replace(/\n{2,}/g, '\n').split("<title>")[1].split("</title>")[0].includes("404");
if (fail)
return null;
}
const htmlText = useHTML ? songIdOrHtml : responseText;
const metricsTable = (htmlText.split(`<div class="metric">`)[1] ?? htmlText.split(`<div class="metric">`)[1]).split("</table>")[0];
/**
* @param {string} htmlString
* @returns {{}}
*/
const parse = (htmlString) => {
const names = getTextBetween(htmlString, "<tr><th>", '</th>').map(x => x.split(":")[0]);
const infos = getTextBetween(htmlString, "</th><td><p>", '</td>').map((x, y) => y == 0 ? x.split("</p><a")[0] : x)
.map(x => unescapeHtmlString(x.trimEnd()).replace(/\r/g, '').replace(/\n{2,}/g, '\n'))
.map(x => x.endsWith("</p>") ? x.slice(0, -"</p>".length) : x);
// possibly makes stuff break? /\
return constructObject(names, infos);
};
return parse(metricsTable.replace(/\t/g, "").replace(/\n/g, ""));
}
/**
* Downloads and parses artist song list
* @param {TekstowoAPIArtistID} artistId
* @param {Object} options
* @param {number} options.page
* @param {string} options.sortDir
* @param {string} options.sortMode
* @returns {Promise<{ pageCount: number, results: Array<KVPair<string, TekstowoAPIArtistID>> }>}
*/
async getArtistsSongList(artistId, options = {}) {
const { sortMode, sortDir, page } = options;
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.ARTIST_SONGS(artistId, sortMode, sortDir, page)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
const responseText = unescapeJsonString(await response.text());
const pageCount = await this.getPagesForQuery(undefined, responseText);
const base = responseText.split('-lista">')[1].split("<!-- end right column -->")[0].replace(/\n/g, "").replace(/\t/g, "");
/**
* @type {Array<KVPair<string, TekstowoAPIArtistID>>}
*/
const base2 = [];
const splitTarget = `<a href="/${ConstantURLPaths.song},`;
const extractedIds = getTextBetween(base, splitTarget, `.html" class="`);
for (let i = 0; i < extractedIds.length; i++) {
const element = extractedIds[i];
const name = base.split(splitTarget + element + `.html" class="title"title="`)[1].split(`">`)[0];
base2.push(new KVPair(name, element));
}
// debugger;
return { pageCount, results: base2 };
}
/**
* @param {string} internalId The post id we are pulling comments for. Can be song id, artist id.
* @param {*} offset How many comments have we already acknowledged?
* @param {*} mode What type is the post? 'S' for songs, 'A' for artists.
*/
async requestComments(internalId, offset = 0, mode = 'S') {
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.__TEKSTOWO_OFFICIAL_API_USE_RARELY.MORE_COMMENTS(internalId, offset, mode)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
const responseText = unescapeJsonString(await response.text());
return parseComments(responseText);
}
async getArtistProfile(artistId) {
const requestOptions = new TekstowoAPIRequestOptions(
this.proxyThisUrl(TekstowoAPIUrls.ARTIST_PROFILE(artistId)), { method: "GET" },
);
const response = await this.makeRequest(requestOptions);
const responseText = unescapeJsonString(await response.text());
const displayName = responseText.matchAll(/<div\sclass=".*?">\s+?<strong>(.*?)<\/strong>\s+?<\/div>/g);
const artistDescription = (responseText.split(`by="opis-tab">`)[1].split("</div>")[0].replace(/\n/g, '').replace(/<br \/>/g, '\n')).replace(/\r/g, '');
const artistDescriptionMoreMod = artistDescription.replace(/\t/g, '').trim();
const artistDiscography = getTextBetween(responseText.split(`by="dyskografia-tab">`)[1].split("</div>")[0], "<p>", "</p>").map(x => {
const base = x.match(/\d+?\. <b>(.*?)<\/b>\s*?\((\d+)\)/);
return { year: parseInt(base[2]), name: base[1] };
});
const artistMainPhoto = responseText.split(`id="main_art_photo" src="`)[1].split("\"")[0];
const artistPhotosRegex = /data-lightbox="artist" href="(\/.*?)"><img\s*?src="(\/.*?)"/g;
const artistPhotosRegexMatches = responseText.matchAll(artistPhotosRegex);
const artistPhotosResults = [];
for (const match of artistPhotosRegexMatches) {
artistPhotosResults.push({ hd: match[1], small: match[2] });
}
const commentCount = responseText.includes("Komentarze (") ? responseText.split("Komentarze (")[1].split("):")[0] : undefined;
const artistInternalId = responseText.includes("ajxShowMoreComments") ? responseText.split("ajxShowMoreComments('A',")[1].split(")")[0] : undefined;
const result = new TekstowoAPIArtistProfile(displayName.next().value[1], artistDescriptionMoreMod, [{ hd: artistMainPhoto, small: artistMainPhoto }, ...artistPhotosResults], artistDiscography, commentCount, artistInternalId);
return result;
}
}
/**
* @param {string} input
*/
function parseDate(input) {
const spaceSplitted = input.trim().split(" ");
const [day, monthName, year, time] = spaceSplitted;
return new Date(year, Months.indexOf(monthName), day, time.split(":")[0], time.split(":")[1]);
}
/**
* @param {string} htmlString
*/
function parseComments(htmlString) {
const commentMatches = htmlString.split(`<div class="row komentarz ">`);
const parsedComments = [];
// for (const commentMatch of commentMatches) {
for (let index = 0; index < commentMatches.length; index++) {
const commentHTML = commentMatches[index];
// console.log(element);
if (!commentHTML.trimStart().startsWith("<div"))
continue;
const commentIdMatch = /comment-(\d+)/.exec(commentHTML);
const commentId = commentIdMatch ? commentIdMatch[1] : '';
const usernameMatch = /<strong>(.*?)<\/strong>/s.exec(commentHTML);
const username = usernameMatch ? usernameMatch[1].trim() : '';
const userProfilePathMatch = /<a\s+href="(\/profil,[^"]+)"/.exec(commentHTML);
const userProfilePath = userProfilePathMatch ? userProfilePathMatch[1] : '';
// eslint-disable-next-line no-inline-comments
const commentTextMatch = /<div class=" " id="comment-\d+">(.*?)<\/div>/s.exec(commentHTML); // I hope this won't break any soon
const commentText = commentTextMatch ? commentTextMatch[1].trim().replace(/\n/g, '').replace(/<br \/>/g, '\n') : '';
const date = parseDate(commentHTML.split("</strong></a>")[1].split("<div")[0]);
const scoreMatch = /<span id="crank(\d+)">\(([^)]+)\)<\/span>/.exec(commentHTML);
const score = scoreMatch ? scoreMatch[2] : '';
const parentCommentIdMatch = /ajxShowParent\(this,(\d+)\)/.exec(commentHTML);
const parentCommentId = parentCommentIdMatch ? parentCommentIdMatch[1] : '';
parsedComments.push({
username,
userProfilePath,
commentText,
date,
score,
parentCommentId,
commentId,
});
}
return parsedComments;
}
/**
* @template K, V
*/
class KVPair {
/**
* @param {K} key
* @param {V} value
*/
constructor(key, value) {
this.key = key;
this.value = value;
}
}
/**
* @param {Array} arr
* @returns {Array}
*/
// eslint-disable-next-line no-unused-vars
function getDuplicates(arr) {
const results = [];
arr.sort();
let last = arr[0];
for (let i = 1; i < arr.length; i++) {
if (arr[i] == last) results.push(last);
last = arr[i];
}
return results;
}
/**
* @param {Array} keys
* @param {Array} values
* @returns {Object}
*/
function constructObject(keys, values) {
const obj = {};
for (let i = 0; i < keys.length; i++) {
obj[keys[i]] = values[i];
}
return obj;
}
/**
* @typedef Distance
* @property {string} str
* @property {number} distance
*/
/**
* @typedef DistanceCompareResult
* @property {string} closestString
* @property {number} lowestDistance
*/
/**
* @param {Array<Distance>} distances
* @returns {DistanceCompareResult}
*/
function findClosestString(distances) {
let lowestDistance = Infinity;
let closestString = '';
distances.forEach(({ str, distance }) => {
if (distance < lowestDistance) {
lowestDistance = distance;
closestString = str;
}
});
return {
closestString: closestString,
lowestDistance: lowestDistance,
};
}
/**
* @param {string[]} strArray
* @param {string} targetStr
* @returns {Array<Distance>}
*/
function levenshteinDistanceArray(strArray, targetStr) {
const distances = [];
for (let i = 0; i < strArray.length; i++) {
const str = strArray[i];
const distance = levenshteinDistance(str, targetStr);
distances.push({ str, distance });
}
return distances;
}
/**
* @param {string} str1
* @param {string} str2
* @returns {number}
*/
function levenshteinDistance(str1, str2) {
const m = str1.length;
const n = str2.length;
/**
* @type {Array<Array<number>>}
*/
const dp = Array(m + 1)
.fill(null)
.map(() => Array(n + 1).fill(0));
for (let i = 0; i <= m; i++) {
dp[i][0] = i;
}
for (let j = 0; j <= n; j++) {
dp[0][j] = j;
}
for (let i = 1; i <= m; i++) {
for (let j = 1; j <= n; j++) {
if (str1[i - 1] === str2[j - 1]) {
dp[i][j] = dp[i - 1][j - 1];
}
else {
dp[i][j] =
1 +
Math.min(
dp[i - 1][j],
dp[i][j - 1],
dp[i - 1][j - 1],
);
}
}
}
return dp[m][n];
}
// /**
// * @param {string} x
// * @returns {string}
// */
// function filterOut(x) {
// return x.split("\n").filter(line => line !== "\n").join("");
// }
/**
* @param {string} jsonString
* @returns {string}
*/
function unescapeJsonString(jsonString) {
return jsonString.replace(/\\["\\/bfnrtu]/g, match => {
switch (match) {
case '\\b':
return '\b';
case '\\f':
return '\f';
case '\\n':
return '\n';
case '\\r':
return '\r';
case '\\t':
return '\t';
case '\\/':
return '/';
case '\\"':
return '"';
case '\\\\':
return '\\';
default:
if (match.slice(0, 2) === '\\u') {
const codePoint = parseInt(match.slice(2), 16);
return String.fromCharCode(codePoint);
}
return match;
}
});
}
/**
* @param {string} htmlString
* @returns {string}
*/
function unescapeHtmlString(htmlString) {
return htmlString.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
.replace(/'/g, "'");
}
/**
* @param {string} text
* @param {string} start
* @param {string} end
* @returns {string[]}
*/
function getTextBetween(text, start, end) {
const results = [];
let startIndex = 0;
while (startIndex < text.length) {
const startIdx = text.indexOf(start, startIndex);
if (startIdx === -1) {
break;
}
const endIdx = text.indexOf(end, startIdx + start.length);
if (endIdx === -1) {
break;
}
const match = text.substring(startIdx + start.length, endIdx);
results.push(match);
startIndex = endIdx + end.length;
}
return results;
}
module.exports = TekstowoAPI;