initial commit

Author: kohchihao

.gitignore

@@ -0,0 +1,3 @@
+.env
+node_modules/**/*
+temp/*

app.js

@@ -0,0 +1,114 @@
+require('dotenv').config()
+const fs = require('fs');
+const tough = require('tough-cookie');
+const request = require('request-promise');
+const Telegraf = require('telegraf');
+const bot = new Telegraf(process.env.BOT_API);
+const uuidv4 = require('uuid/v4');
+
+
+bot.on('document', ctx => {
+  if (
+    ctx.message.document &&
+    ctx.message.document.mime_type === 'application/pdf'
+  ) {
+    console.log(ctx.message.document);
+    let document = ctx.message.document;
+    bot.telegram.getFileLink(document.file_id).then(data => {
+      console.log('file', data);
+      var options = {
+        method: 'GET',
+        uri: data,
+        resolveWithFullResponse: true
+      };
+      let uuid = uuidv4();
+      if (!fs.existsSync('./temp/' + uuid)) {
+        fs.mkdirSync('./temp/' + uuid);
+      }
+      request(options)
+        .pipe(fs.createWriteStream('./temp/' + uuid + '/' + document.file_name))
+        .on('finish', () => {
+          console.log('finish downloading pdf..');
+          download('./temp/' + uuid, document.file_name);
+        })
+        .on('error', error => {
+          console.log('Error in creating map', error);
+          //remove folder and tell user error.
+        });
+    });
+  }
+});
+
+const download = (path, fileName) => {
+  request({
+    method: 'POST',
+    uri: 'https://simplypdf.com/api/convert',
+    headers: {
+      Accept: 'application/json',
+      'Content-Type': 'multipart/form-data'
+    },
+    formData: {
+      DynamicFile: fs.createReadStream(path + '/' + fileName),
+      OutputFormat: 'PowerPoint'
+    },
+    resolveWithFullResponse: true
+  })
+  .then(r => {
+    console.log('response', r.body);
+    let id = JSON.parse(r.body).id;
+    let cookieValue = r.headers['set-cookie'][0]
+      .split('=', 2)[1]
+      .slice(0, 24);
+    let cookie = new tough.Cookie({
+      key: 'ASP.NET_SessionId',
+      value: cookieValue,
+      domain: 'simplypdf.com',
+      httpOnly: true
+    });
+    let cookiejar = request.jar();
+    cookiejar.setCookie(cookie, 'https://simplypdf.com');
+    let options = {
+      method: 'GET',
+      uri: 'https://simplypdf.com/api/status/' + id,
+      headers: {
+        Accept: 'application/json'
+      },
+      jar: cookiejar,
+      resolveWithFullResponse: true
+    };
+
+    request(options)
+      .then(res => {
+        console.log('status', res.body);
+        let status = JSON.parse(res.body).status;
+        setTimeout(() => {
+          if (status === 'ready') {
+            console.log('ready for download...');
+            let id = JSON.parse(res.body).id;
+            let options = {
+              method: 'GET',
+              uri: 'https://simplypdf.com/api/download/' + id,
+              jar: cookiejar,
+              resolveWithFullResponse: true
+            };
+
+            let file_name = fileName.split('.')[0];
+            request(options)
+              .pipe(fs.createWriteStream(path + '/' + file_name + '.pptx'))
+              .on('finish', function() {
+                console.log('finish downloading pptx...');
+              })
+              .on('error', function(error) {
+                console.log('Error in creating map', error);
+              });
+          }
+        }, 10000);
+      });
+  })
+
+  .catch(err => {
+    console.log('err', err);
+  });
+};
+
+bot.startPolling();