138 lines
5.0 KiB
JavaScript
138 lines
5.0 KiB
JavaScript
const moviedb = require('moviedb');
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const convertTmdbToSeasoned = require('src/tmdb/convertTmdbToSeasoned');
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const TMDB_METHODS = {
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upcoming: { movie: 'miscUpcomingMovies' },
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discover: { movie: 'discoverMovie', show: 'discoverTv' },
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popular: { movie: 'miscPopularMovies', show: 'miscPopularTvs' },
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nowplaying: { movie: 'miscNowPlayingMovies', show: 'tvOnTheAir' },
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similar: { movie: 'movieSimilar', show: 'tvSimilar' },
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search: { movie: 'searchMovie', show: 'searchTv', multi: 'searchMulti' },
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info: { movie: 'movieInfo', show: 'tvInfo' }
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};
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class TMDB {
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constructor(cache, apiKey, tmdbLibrary) {
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this.cache = cache;
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this.tmdbLibrary = tmdbLibrary || moviedb(apiKey);
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this.cacheTags = {
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search: 'se',
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info: 'i',
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upcoming: 'u',
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discover: 'd',
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popular: 'p',
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nowplaying: 'n',
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similar: 'si',
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};
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}
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/**
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* Retrieve a specific movie by id from TMDB.
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* @param {Number} identifier of the movie you want to retrieve
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* @param {String} type filter results by type (default movie).
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* @returns {Promise} succeeds if movie was found
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*/
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lookup(identifier, type = 'movie') {
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const query = { id: identifier };
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const cacheKey = `${this.cacheTags.info}:${type}:${identifier}`;
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return Promise.resolve()
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.then(() => this.cache.get(cacheKey))
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.catch(() => this.tmdb(TMDB_METHODS['info'][type], query))
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.catch(() => { throw new Error('Could not find a movie with that id.'); })
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.then(response => this.cache.set(cacheKey, response))
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.then((response) => {
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try {
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return convertTmdbToSeasoned(response, type);
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} catch (parseError) {
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console.error(parseError);
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throw new Error('Could not parse movie.');
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}
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});
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}
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/**
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* Retrive search results from TMDB.
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* @param {String} text query you want to search for
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* @param {Number} page representing pagination of results
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* @param {String} type filter results by type (default multi)
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* @returns {Promise} dict with query results, current page and total_pages
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*/
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search(text, page = 1, type = 'multi') {
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const query = { query: text, page: page };
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const cacheKey = `${this.cacheTags.search}:${page}:${type}:${text}`;
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return Promise.resolve()
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.then(() => this.cache.get(cacheKey))
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.catch(() => this.tmdb(TMDB_METHODS['search'][type], query))
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.catch(() => { throw new Error('Could not search for movies/shows at tmdb.'); })
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.then(response => this.cache.set(cacheKey, response))
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.then(response => this.mapResults(response));
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}
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/**
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* Fetches a given list from tmdb.
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* @param {String} listName Name of list
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* @param {String} type filter results by type (default movie)
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* @param {Number} page representing pagination of results
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* @returns {Promise} dict with query results, current page and total_pages
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*/
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listSearch(listName, type = 'movie', page = '1') {
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const query = { page: page };
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console.log(query);
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const cacheKey = `${this.cacheTags[listName]}:${type}:${page}`;
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return Promise.resolve()
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.then(() => this.cache.get(cacheKey))
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.catch(() => this.tmdb(TMDB_METHODS[listName][type], query))
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.catch(() => { throw new Error('Error fetching list from tmdb.'); })
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.then(response => this.cache.set(cacheKey, response))
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.then(response => this.mapResults(response, type));
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}
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/**
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* Maps our response from tmdb api to a movie/show object.
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* @param {String} response from tmdb.
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* @param {String} The type declared in listSearch.
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* @returns {Promise} dict with tmdb results, mapped as movie/show objects.
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*/
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mapResults(response, type) {
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console.log(response.page);
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return Promise.resolve()
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.then(() => {
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const mappedResults = response.results.filter((element) => {
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return (element.media_type === 'movie' || element.media_type === 'tv' || element.media_type === undefined);
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}).map((element) => convertTmdbToSeasoned(element, type));
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return {
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results: mappedResults,
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page: response.page,
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total_pages: response.total_pages,
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total_results: response.total_results
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}
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})
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.catch((error) => { throw new Error(error); });
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}
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/**
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* Wraps moviedb library to support Promises.
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* @param {String} method function name in the library
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* @param {Object} argument argument to function being called
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* @returns {Promise} succeeds if callback succeeds
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*/
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tmdb(method, argument) {
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return new Promise((resolve, reject) => {
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const callback = (error, reponse) => {
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if (error) {
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return reject(error);
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}
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return resolve(reponse);
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};
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if (!argument) {
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this.tmdbLibrary[method](callback);
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} else {
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this.tmdbLibrary[method](argument, callback);
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}
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});
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}
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}
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module.exports = TMDB;
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