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Code Issues Releases Wiki Activity

Added downloadFile sugar method

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Ivan Skorokhodov 2015-09-26 19:52:17 +03:00
parent 6006ba4fd6
commit 14dbd12f68
4 changed files with 76 additions and 0 deletions
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13
README.md
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@ -296,4 +296,17 @@ See: https://core.telegram.org/bots/api#getfile
* **Promise** *promise* Promise which will have *fileURI* in resolve callback
## downloadFile(fileId, downloadDir)
Downloads file in the specified folder.
This is just a sugar for (getFile)[#getfilefiled] method
### Params:
* **String** *fileId* File identifier to get info about
* **String** *downloadDir* Absolute path to the folder in which file will be saved
### Return:
* **Promise** *promise* Promise, which will have *filePath* of downloaded file in resolve callback
<!-- End src/telegram.js -->

1
package.json
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@ -27,6 +27,7 @@
},
"devDependencies": {
"coveralls": "^2.11.2",
"del": "^2.0.2",
"istanbul": "^0.3.17",
"mocha": "^2.2.5",
"mocha-lcov-reporter": "0.0.2",

29
src/telegram.js
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@ -434,4 +434,33 @@ TelegramBot.prototype.getFileLink = function(fileId) {
});
};
/**
* Downloads file in the specified folder.
* This is just a sugar for (getFile)[#getfilefiled] method
*
* @param {String} fileId File identifier to get info about
* @param {String} downloadDir Absolute path to the folder in which file will be saved
* @return {Promise} promise Promise, which will have *filePath* of downloaded file in resolve callback
*/
TelegramBot.prototype.downloadFile = function(fileId, downloadDir) {
var bot = this;
return new Promise(function(resolve, reject) {
bot.getFileLink(fileId).then(function(fileURI) {
// Apparently, this is not the safest method to get the file name,
// but I am pretty sure that Telegram will not include slashes when generating names
var fileName = fileURI.slice(fileURI.lastIndexOf('/') + 1);
var filePath = downloadDir + '/' + fileName;
request({uri: fileURI})
.pipe(fs.createWriteStream(filePath))
.on('close', function() {
resolve(filePath);
});
});
});
}
module.exports = TelegramBot;

33
test/index.js
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@ -2,6 +2,7 @@ var TelegramPolling = require('../src/telegramPolling');
var Telegram = require('../index');
var request = require('request');
var should = require('should');
var del = require('del');
var fs = require('fs');
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
@ -420,6 +421,38 @@ describe('Telegram', function () {
});
});
describe('#downloadFile', function () {
var fileId;
var downloadPath = __dirname;
// To get a file we have to send some file first
it('should send a photo from file', function (done) {
var bot = new Telegram(TOKEN);
var photo = __dirname + '/bot.gif';
bot.sendPhoto(USERID, photo).then(function (resp) {
resp.should.be.an.instanceOf(Object);
fileId = resp.photo[0].file_id;
done();
});
});
it('should download a file', function (done) {
var bot = new Telegram(TOKEN);
bot.downloadFile(fileId, downloadPath).then(function (filePath) {
filePath.should.be.an.instanceOf(String);
fs.existsSync(filePath).should.be.true();
del(filePath); // Clean folder after test
done();
});
});
});
}); // End Telegram