initial commit

2020-12-23 22:21:47 +01:00 · 2020-12-23 22:21:47 +01:00 · fe9d1ee619
commit fe9d1ee619
5 changed files with 654 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,4 @@
+*~
+.DS_Store
+*.swp
+node_modules
--- a/README.md
+++ b/README.md
@ -0,0 +1,50 @@
+# NZZ Downloader
+The [NZZ](https://en.wikipedia.org/wiki/Neue_Z%C3%BCrcher_Zeitung) is the Swiss
+Swiss newspaper of record. Its first issue was all the way back in 1780. It's 
+even better that you can download every single issue ever released (if 
+you have a subscription of course).
+
+This little tool helps you with downloading all released issues in a specified
+time span.
+
+It was written because the archive website is not very friendly in the author's
+opinion and of course because it is not possible to download everything in a time
+span.
+
+Because the archive website makes heavy use of javascript this is done with
+[selenium](https://www.selenium.dev/) to remote control a browser (firefox in 
+this case). This is also why it is not all that fast but that is ok.
+
+Please only use this with your own credentials, the journalists deserve to be
+paid for their work.
+
+## Installation
+You need to be comfortable with the command line to use the nzz downloader and
+it has only been tested on linux systems though it should work fine on Windows
+or macOS.
+
+- [NodeJS](https://nodejs.org/en/download/) (the LTS version is fine)
+- [Firefox](https://www.mozilla.org/en-US/firefox/download/thanks/)
+- [geckodriver](https://github.com/mozilla/geckodriver/releases)
+- [nzz.js]()
+
+## Usage
+```
+Usage: nzz.js -f [date] -t [date] -o [path] -u [usernane] -p [password]
+
+Options:
+      --version   Show version number                                  [boolean]
+  -h, --help      Show help                                            [boolean]
+  -f, --from      Earliest issue to download.            [default: "2020-12-23"]
+  -t, --to        Latest issue to download.              [default: "2020-12-23"]
+  -o, --out       Download directory.                         [default: "./nzz"]
+  -u, --user      Username for the nzz archive.                       [required]
+  -p, --password  Password for the user.                              [required]
+```
+
+### Examples 
+Download all existing issues from 01-01-1780 until 30-02-1780 to the default 
+directory "./nzz"
+```
+./nzz.js -u 'myuser@example.com' -p 'mypassword' -f 1780-01-01 -t 1780-02-30
+```
--- a/nzz.js
+++ b/nzz.js
@ -0,0 +1,256 @@
+#!/usr/bin/env node
+/* Copyright (c) Sebastian Hugentobler <sebastian@vanwa.ch> 2020.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+const tmp = require('tmp');
+var path = require('path');
+const fs = require('fs');
+const { Builder, By, Key, until } = require('selenium-webdriver');
+const fx = require('selenium-webdriver/firefox');
+const yargs = require('yargs/yargs')
+const { hideBin } = require('yargs/helpers');
+
+const URL = 'https://zeitungsarchiv.nzz.ch/';
+const RETRY_DELAY = 2000;
+const WAIT_TIMEOUT = 2000;
+const TIMEOUT_MSG = `Timeout after ${WAIT_TIMEOUT / 1000} seconds.`;
+const SEARCH_WAIT_TIMEOUT = 5000;
+const SEARCH_TIMEOUT_MSG = `Timeout after ${SEARCH_WAIT_TIMEOUT / 1000} seconds.`;
+
+Date.prototype.isoDate = function () {
+  return `${this.getFullYear()}-${String(this.getMonth() + 1).padStart(2, '0')}-${String(this.getDate()).padStart(2, '0')}`;
+}
+
+Date.prototype.nzzDate = function () {
+  return `${String(this.getDate()).padStart(2, '0')}.${String(this.getMonth() + 1).padStart(2, '0')}.${this.getFullYear()}`;
+}
+
+Date.prototype.addDays = function (days) {
+  let date = new Date(this.valueOf());
+  date.setDate(date.getDate() + days);
+  return date;
+}
+
+function sleep(ms) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
+/**
+ * Wait for an in progress download to finish and move the file to the correct
+ * destination.
+ * 
+ * @param {fs.PathLike} tmpDir Download directory. 
+ * @param {fs.PathLike} outDir Final destination directory.
+ * @param {Date} date Date of the issue.
+ */
+async function moveDownload(tmpDir, outDir, date) {
+  return new Promise(resolve => {
+    let needsOffset = false;
+
+    // Dates in filenames are off by one before 1894
+    if (date.getFullYear() < 1894) {
+      date = date.addDays(-1);
+      needsOffset = true;
+    }
+
+    let srcFile = path.join(tmpDir, `Gesamtausgabe_NZZ_-_Neue_Zürcher_Zeitung_${date.isoDate()}.pdf`);
+    
+
+    fs.watchFile(srcFile, () => {
+      if (fs.existsSync(srcFile)) {
+        fs.unwatchFile(srcFile);
+        if (needsOffset) {
+          date = date.addDays(1);
+        }
+    
+        let destFile = path.join(outDir, `${date.isoDate()}.pdf`);
+        fs.copyFileSync(srcFile, destFile);
+    
+        resolve();
+      }
+    });
+  });
+}
+
+/**
+ * Enter the dates of the issue to download.
+ * 
+ * @param {WebDriver} driver Selenium driver to use.
+ * @param {Date} date Date of the issue.
+ */
+async function enterDate(driver, date) {
+  console.log(driver);
+  let dateString = date.nzzDate();
+
+  let startDate = await driver.wait(until.elementLocated(By.css('.fup-s-date-start')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await startDate.clear();
+  await startDate.sendKeys(dateString);
+
+  let endDate = await driver.wait(until.elementLocated(By.css('.fup-s-date-end')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await endDate.clear();
+  await endDate.sendKeys(dateString + Key.ENTER);
+}
+
+/**
+ * Login to the NZZ archive.
+ * 
+ * @param {WebDriver} driver Selenium driver to use.
+ * @param {String} user Username for the login.
+ * @param {String} password Password for the user.
+ */
+async function login(driver, user, password) {
+  console.log('logging in...');
+
+  await driver.get(URL);
+  await sleep(500);
+
+  let loginButton = await driver.findElement(By.css('.fup-menu-login-container'));
+  await driver.wait(until.elementIsVisible(loginButton), WAIT_TIMEOUT);
+  await sleep(1000);
+  await loginButton.click();
+
+  let emailField = await driver.wait(until.elementLocated(By.id('c1-login-field')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await emailField.sendKeys(user + Key.ENTER);
+
+  let pwField = await driver.wait(until.elementLocated(By.id('c1-password-field')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await pwField.sendKeys(password + Key.ENTER);
+}
+
+/**
+ * Start the downloa of a full issue.
+ * 
+ * @param {WebDriver} driver Selenium driver to use.
+ */
+async function download(driver) {
+  let menu = await driver.wait(until.elementLocated(By.css('.fup-menu-item-download')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await menu.click();
+
+  let download = await driver.wait(until.elementLocated(By.css('.fup-s-menu-download-edition')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await download.click();
+
+  let back = await driver.wait(until.elementLocated(By.css('.fup-s-menu-back')), WAIT_TIMEOUT, TIMEOUT_MSG, RETRY_DELAY);
+  await driver.wait(until.elementIsVisible(back), WAIT_TIMEOUT);
+  await sleep(500)
+}
+
+/**
+ * Download all issues in a certain time span.
+ * 
+ * @param {WebDriver} driver Selenium driver to use. 
+ * @param {Date} from Earliest issue to download.
+ * @param {Date} to Latest issue to download.
+ * @param {fs.PathLike} tmpDir Download directory. 
+ * @param {fs.PathLike} outDir Final destination directory.
+ */
+async function findIssues(driver, from, to, tmpDir, outDir) {
+  from = from.addDays(-1);
+
+  while (from.toDateString() !== to.toDateString()) {
+    from = from.addDays(1);
+    await enterDate(driver, from);
+
+    try {
+      let articles = await driver.wait(until.elementsLocated(By.css('.fup-archive-result-item-article-title')), SEARCH_WAIT_TIMEOUT, SEARCH_TIMEOUT_MSG, RETRY_DELAY);
+      await articles[0].click();
+      
+      await download(driver);
+      console.log(`downloading ${from.isoDate()}...`);
+
+      // do this in the background
+      moveDownload(tmpDir, outDir, from);
+
+      await driver.get(URL);
+    } catch {
+      // this means there is no issue on the searched date
+      // move along with the next date
+      continue;
+    }
+  }
+}
+
+/**
+ * Setup the headless browser and download all issues in the specified time span.
+ * 
+ * @param {Date} from Earliest issue to download.
+ * @param {Date} to Latest issue to download.
+ * @param {String} user Username for the nzz archive.
+ * @param {String} password Password for the user.
+ * @param {fs.PathLike} outDir Final destination directory.
+ */
+async function run(from, to, user, password, outDir) {
+  if (!fs.existsSync(outDir)) {
+    fs.mkdirSync(outDir);
+  }
+
+  let tmpDir = tmp.dirSync();
+  console.log(`downloading to ${outDir} (tmp dir: ${tmpDir.name})...`);
+
+  let fxOptions = new fx.Options()
+    .addArguments('-headless')
+    .setPreference('pdfjs.disabled', true)
+    .setPreference('browser.helperApps.neverAsk.openFile', 'application/pdf')
+    .setPreference('browser.download.folderList', 2)
+    .setPreference('browser.download.manager.showWhenStartingout', false)
+    .setPreference('browser.download.dir', tmpDir.name)
+    .setPreference('browser.helperApps.neverAsk.saveToDisk', 'application/pdf');
+
+  let driver = await new Builder()
+    .forBrowser('firefox')
+    .setFirefoxOptions(fxOptions)
+    .build();
+
+  try {
+    await login(driver, user, password);
+    await findIssues(driver, from, to, tmpDir.name, outDir);
+    await sleep(1000);
+  }
+  finally {
+    driver.quit();
+    fs.rmdirSync(tmpDir.name, { recursive: true });
+  }
+}
+
+/**
+ * Parse arguments and start the downloading off the issues.
+ */
+(async function init() {
+  let now = new Date();
+  let nowString = now.isoDate();
+
+  const argv = yargs(hideBin(process.argv))
+    .usage('Usage: $0 -f [date] -t [date] -o [path] -u [usernane] -p [password]')
+    .demandOption(['u', 'p'])
+    .help('h')
+    .describe('f', 'Earliest issue to download.')
+    .describe('t', 'Latest issue to download.')
+    .describe('o', 'Download directory.')
+    .describe('u', 'Username for the nzz archive.')
+    .describe('p', 'Password for the user.')
+    .alias('h', 'help')
+    .alias('f', 'from')
+    .alias('t', 'to')
+    .alias('o', 'out')
+    .alias('u', 'user')
+    .alias('p', 'password')
+    .default('f', nowString)
+    .default('t', nowString)
+    .default('o', './nzz')
+    .epilog('Copyright (c) Sebastian Hugentobler <sebastian@vanwa.ch> 2020')
+    .example("$0 -u 'myuser@example.com' -p 'mypassword' -f 1780-01-01 -t 1780-02-30", 'Download all existing issues from 01-01-1780 until 30-02-1780 to the default directory "./nzz"')
+    .argv;
+
+  let from = new Date(argv.from);
+  let to = new Date(argv.to);
+
+  if (from > to) {
+    console.error('"from" date must be before "to" date');
+    process.exit(1);
+  }
+
+  run(from, to, argv.user, argv.password, argv.out)
+})();
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,331 @@
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+  "name": "nzz-downloader",
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+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,13 @@
+{
+  "name": "nzz-downloader",
+  "version": "0.1.0",
+  "description": "",
+  "main": "nzz.js",
+  "author": "Sebastian Hugentobler",
+  "license": "MPL-2.0",
+  "dependencies": {
+    "selenium-webdriver": "^4.0.0-alpha.8",
+    "tmp": "^0.2.1",
+    "yargs": "^16.2.0"
+  }
+}