cspanvideos
Version:
A small api for gathering video information from CSPAN for a particular legislator.
142 lines (140 loc) • 16.7 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const request = require("request");
const cheerio = require("cheerio");
const chalk = require("chalk");
const _ = require("lodash");
const validUrl = require('valid-url');
const helpers_1 = require("./helpers");
class CSPANVideos {
constructor() {
this.CSPAN_BASE_URL = "https://www.c-span.org/person/?";
this.CSPAN_BAD_URL = "https://www.c-span.org/search/?searchtype=People&query=";
}
fetchVideoData(personName) {
const name = personName;
// if "name" is an error;
if (typeof name !== "string") {
console.error(chalk.bgRed("rejecting because name isn't a string"), name);
return;
}
return this._makeRequest(name)
.then(this._isBadURL)
.then((data) => {
return data
? this._makeSearchRequest(personName)
: this._makeRequest(name);
})
.then((data) => {
if (data instanceof Error) {
return Promise.reject(data);
}
/**
* If this string is present, then we are on
* the intended page.
*/
return data.indexOf('Recent Appearances') !== -1
? this._parseRequestForData(data)
: this._parseSearchPageForData(data);
})
.then((data) => {
return typeof data === "string"
? this._makeRequest(name, null, data)
: Promise.resolve(data);
})
.catch((err) => {
console.warn(chalk.magenta("There was an error, catch", err));
return err;
});
}
_isBadURL(dom) {
const $ = cheerio.load(dom);
return Promise.resolve($('body').html().indexOf("Page Not Found") > -1);
}
/**
* For when the url differs from the person's name
* like Ted Cruz being "rcruz."
*/
_makeSearchRequest(personName) {
if (!personName) {
return Promise.reject("Name not provided");
}
return this._makeRequest(personName, true);
}
_makeRequest(personName, badURL, newUrl) {
// Add try/catch?
if (!personName) {
return Promise.reject(new Error("No person name provided"));
}
const name = !badURL
? helpers_1.formatPersonName(personName)
: helpers_1.formatPersonName(personName, true);
const base_url = newUrl
? newUrl
: !badURL
? this.CSPAN_BASE_URL + name
: this.CSPAN_BAD_URL + personName.replace(/\s/, "+");
if (!name) {
return Promise.reject(name);
}
return new Promise((resolve, reject) => {
request(base_url, (err, response, body) => {
if (err) {
handleError(err);
reject(err);
}
else {
resolve(body);
}
});
});
}
_parseSearchPageForData(dom) {
const $ = cheerio.load(dom);
let properURL = $('section.bios > ul > li.indiv_bio > a.thumb')
.first()
.attr('href');
if (!properURL) {
return new Error("Bad name format provided");
}
if (_.startsWith(properURL, "//")) {
properURL = "https:" + properURL;
}
return properURL;
}
_parseRequestForData(dom) {
const $ = cheerio.load(dom);
const recentPrograms = [];
const recentProgramsHolder = $('ul.recent-programs > li');
for (var i = 0; i < recentProgramsHolder.length; i++) {
const singleVideo = {};
const container = recentProgramsHolder
.eq(i);
singleVideo.thumbnail = container
.find('a.thumb > img')
.attr("src");
singleVideo.title = container
.find('div.text > a.title > h3')
.text();
singleVideo.date = container
.find("div.text > span.time > time")
.text();
singleVideo.video_url = container
.find("a.thumb")
.attr("href");
singleVideo.embed_url = helpers_1.formatEmbedURL(singleVideo.video_url);
recentPrograms.push(singleVideo);
}
return recentPrograms;
}
}
function handleError(err) {
console.error("There was an error: ", err);
}
const cspanvideos = new CSPANVideos();
exports.cspanvideos = cspanvideos;
/**
* TODO: Cache request info from search page to cut down
* on number of requests.
*/
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* as request from 'request';\nimport * as cheerio from 'cheerio';\nimport * as chalk from 'chalk';\nimport * as _ from 'lodash';\n\nconst validUrl = require('valid-url');\n\nimport { formatPersonName, formatEmbedURL } from './helpers';\n\nclass CSPANVideos {\n  CSPAN_BASE_URL: string = \"https://www.c-span.org/person/?\";\n  CSPAN_BAD_URL: string = \"https://www.c-span.org/search/?searchtype=People&query=\";\n\n\n  fetchVideoData(personName: string) {\n    const name = personName;\n\n    // if \"name\" is an error;\n    if (typeof name !== \"string\") {\n      console.error(chalk.bgRed(\"rejecting because name isn't a string\"), name)\n      return;\n    }\n\n    return this._makeRequest(name)\n      .then(this._isBadURL)\n      .then((data) => {\n        return data\n          ? this._makeSearchRequest(personName)\n          : this._makeRequest(name)\n      })\n      .then((data) => {\n\n        if ( data instanceof Error) {\n          return Promise.reject(data);\n        }\n        /**\n         * If this string is present, then we are on\n         * the intended page.\n         */\n        return data.indexOf('Recent Appearances') !== -1\n          ? this._parseRequestForData(data)\n          : this._parseSearchPageForData(data)\n      })\n      .then((data) => {\n        return typeof data === \"string\"\n          ? this._makeRequest(name, null, data)\n          : Promise.resolve(data);\n      })\n      .catch((err) => {\n        console.warn(chalk.magenta(\"There was an error, catch\", err))\n        return err;\n      })\n      \n  }\n\n  _isBadURL(dom: string): Promise<boolean> {\n    const $ = cheerio.load(dom);\n    return Promise.resolve($('body').html().indexOf(\"Page Not Found\") > -1)\n  }\n\n  /**\n   * For when the url differs from the person's name\n   * like Ted Cruz being \"rcruz.\"\n   */\n  _makeSearchRequest(personName: string): any {\n    if ( !personName ) {\n      return Promise.reject(\"Name not provided\");\n    }\n\n    return this._makeRequest(personName, true);\n  }\n\n  _makeRequest(personName: string, badURL?: boolean, newUrl?) {\n    \n    // Add try/catch?\n    if ( !personName ) {\n      return Promise.reject(new Error(\"No person name provided\"));\n    } \n\n    const name = !badURL\n    ? formatPersonName(personName)\n    : formatPersonName(personName, true)\n    \n    const base_url = newUrl \n    ? newUrl \n    : !badURL\n      ? this.CSPAN_BASE_URL + name\n      : this.CSPAN_BAD_URL + personName.replace(/\\s/,\"+\");\n\n    if (!name) {\n      return Promise.reject(name)\n    }\n\n    return new Promise((resolve, reject) => {\n      request(base_url , (err: Error, response: request.RequestResponse, body: string) => {\n        if (err) {\n          handleError(err);\n          reject(err);\n        } else {\n          resolve(body);\n        }\n      });\n    });\n  }\n  \n  _parseSearchPageForData(dom: string) {\n    const $ = cheerio.load(dom);\n    let properURL = $('section.bios > ul > li.indiv_bio > a.thumb')\n      .first()\n      .attr('href');\n\n    if ( !properURL ) {\n      return new Error(\"Bad name format provided\")\n    }\n\n    if ( _.startsWith(properURL, \"//\")) {\n      properURL = \"https:\" + properURL;\n    }\n\n    return properURL;\n  }\n\n  _parseRequestForData(dom: string) {\n    const $ = cheerio.load(dom);\n    const recentPrograms: ISingleVideo[] = [];\n    const recentProgramsHolder = $('ul.recent-programs > li');\n\n    for (var i = 0; i < recentProgramsHolder.length; i++) {\n      const singleVideo: ISingleVideo = {};\n\n      const container = recentProgramsHolder\n        .eq(i);\n\n      singleVideo.thumbnail = container\n        .find('a.thumb > img')\n        .attr(\"src\");\n\n      singleVideo.title = container\n        .find('div.text > a.title > h3')\n        .text();\n\n      singleVideo.date = container\n        .find(\"div.text > span.time > time\")\n        .text();\n\n      singleVideo.video_url = container\n        .find(\"a.thumb\")\n        .attr(\"href\");\n\n      singleVideo.embed_url = formatEmbedURL(singleVideo.video_url);\n\n      recentPrograms.push(singleVideo);\n    }\n\n    return recentPrograms;\n  }\n}\n\nfunction handleError(err: Error) {\n  console.error(\"There was an error: \", err);\n}\n\nconst cspanvideos = new CSPANVideos();\nexport { cspanvideos };\n\ninterface ISingleVideo {\n  thumbnail?: string,\n  title?: string,\n  date?: string,\n  embed_url?: string,\n  video_url?: string\n}\n\n/**\n * TODO: Cache request info from search page to cut down\n * on number of requests.\n */"]}