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import * as R from 'ramda';import url from 'url';import request from './utils/request.js';import { BASE_URL } from './constants.js';import { processFullDetailApps, checkFinished } from './utils/processPages.js';import scriptData from './utils/scriptData.js';
/* * Make the first search request as in the browser and call `checkfinished` to * process the next pages. */function initialRequest (opts) {  // sometimes the first result page is a cluster of subsections,  // need to skip to the full results page  function skipClusterPage (html) {    const match = html.match(/href="\/store\/apps\/collection\/search_collection_more_results_cluster?(.*?)"/);    if (match) {      const innerUrl = BASE_URL + match[0].split(/"/)[1];      return request(Object.assign({        url: innerUrl      }, opts.requestOptions), opts.throttle);    }    return html;  }
  const url = `${BASE_URL}/store/search?c=apps&q=${opts.term}&hl=${opts.lang}&gl=${opts.country}&price=${opts.price}`;  return request(Object.assign({ url }, opts.requestOptions), opts.throttle)    .then(skipClusterPage)    .then((html) => processFirstPage(html, opts, [], INITIAL_MAPPINGS));}
function extaractDeveloperId (link) {  return link.split('?id=')[1];}
async function processFirstPage (html, opts, savedApps, mappings) {  if (R.is(String, html)) {    html = scriptData.parse(html);  }
  const mainAppMapping = {    title: [16, 2, 0, 0],    appId: [16, 11, 0, 0],    url: {      path: [17, 0, 0, 4, 2],      fun: (path) => new url.URL(path, BASE_URL).toString()    },    icon: [16, 2, 95, 0, 3, 2],    developer: [16, 2, 68, 0],    developerId: {      path: [16, 2, 68, 1, 4, 2],      fun: extaractDeveloperId    },    currency: [17, 0, 2, 0, 1, 0, 1],    price: {      path: [17, 0, 2, 0, 1, 0, 0],      fun: (price) => price / 1000000    },    free: {      path: [17, 0, 2, 0, 1, 0, 0],      fun: (price) => price === 0    },    summary: [16, 2, 73, 0, 1],    scoreText: [16, 2, 51, 0, 0],    score: [16, 2, 51, 0, 1]  };
  const moreResultsMapping = {    title: [0, 3],    appId: [0, 0, 0],    url: {      path: [0, 10, 4, 2],      fun: (path) => new url.URL(path, BASE_URL).toString()    },    icon: [0, 1, 3, 2],    developer: [0, 14],    currency: [0, 8, 1, 0, 1],    price: {      path: [0, 8, 1, 0, 0],      fun: (price) => price / 1000000    },    free: {      path: [0, 8, 1, 0, 0],      fun: (price) => price === 0    },    summary: [0, 13, 1],    scoreText: [0, 4, 0],    score: [0, 4, 1]  };
  removeUnneededSections(html, mappings);
  const sections = R.path(mappings.sections, html);  if (noResultsFound(sections, opts)) return [];
  const moreResultsSection = sections.filter(section => isMoreSection(section))[0];  const mainAppSection = R.path(mappings.app, html);
  const processedApps = R.map(scriptData.extractor(moreResultsMapping), R.path(SECTIONS_MAPPING.apps, moreResultsSection));  if (mainAppSection) {    processedApps.unshift(scriptData.extractor(mainAppMapping)(mainAppSection));  }
  const apps = opts.fullDetail    ? await processFullDetailApps(processedApps, opts)    : processedApps;  const token = R.path(SECTIONS_MAPPING.token, moreResultsSection);
  return checkFinished(opts, [...savedApps, ...apps], token);}
function isMoreSection (section) {  const sectionTitle = R.path(SECTIONS_MAPPING.title, section);  return R.is(String, sectionTitle);}
/** * Removes unused sections that contain no app informations * Removed sections: * * About these results * * Suggested message * * Note: For EU countries the suggested message is shown before the About section *       while for no result it is reverted */function removeUnneededSections (html, mappings) {  removeSectionsIfPathValueOfType(html, SECTIONS_MAPPING.aboutResultsTitle, String);  // if the search function does no longer throw when no result was returned  // mapping SECTIONS_MAPPING.suggestedResultDescritpion can be replaced with SECTIONS_MAPPING.noResult mapping  removeSectionsIfPathValueOfType(html, [...mappings.sections, 0, ...SECTIONS_MAPPING.suggestedResultDescritpion], String);  removeSectionsIfPathValueOfType(html, SECTIONS_MAPPING.aboutResultsTitle, String);}
function removeSectionsIfPathValueOfType (html, path, type) {  if (R.is(type, R.path(path, html))) {    R.path(INITIAL_MAPPINGS.sections, html).shift();  }}
function noResultsFound (sections, opts) {  return sections.some(section => {    const noResults = R.path(SECTIONS_MAPPING.noResults, section);    return R.is(String, noResults) && noResults.endsWith(`<b>${opts.term}</b>`);  });}
const INITIAL_MAPPINGS = {  app: ['ds:4', 0, 1, 0, 23],  sections: ['ds:4', 0, 1]};
const SECTIONS_MAPPING = {  title: [22, 1, 0],  token: [22, 1, 3, 1],  apps: [22, 0],  noResults: [25, 0, 0, 0, 1],  suggestedResultDescritpion: [25, 0, 0, 1, 1],  aboutResultsTitle: ['ds:4', 0, 1, 0, 31, 0]};
function getPriceGoogleValue (value) {  switch (value.toLowerCase()) {    case 'free':      return 1;    case 'paid':      return 2;    case 'all':    default:      return 0;  }}
function search (appData, opts) {  return new Promise(function (resolve, reject) {    if (!opts || !opts.term) {      throw Error('Search term missing');    }
    if (opts.num && opts.num > 250) {      throw Error('The number of results can\'t exceed 250');    }
    opts = {      term: encodeURIComponent(opts.term),      lang: opts.lang || 'en',      country: opts.country || 'us',      num: opts.num || 20,      fullDetail: opts.fullDetail,      price: opts.price ? getPriceGoogleValue(opts.price) : 0,      throttle: opts.throttle,      cache: opts.cache,      requestOptions: opts.requestOptions    };
    initialRequest(opts)      .then(resolve)      .catch(reject);  }).then((results) => {    if (opts.fullDetail) {      // if full detail is wanted get it from the app module      return Promise.all(results.map((app) => appData({ ...opts, appId: app.appId })));    }    return results;  });}
export default search;