gramjs/examples/expressExample/lowLevel.js at master · gram-js/gramjs · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
const express = require("express"); // npm i express
const bodyParser = require("body-parser"); // npm i body-parser

const { Api, TelegramClient, utils } = require("telegram");
const { StoreSession } = require("telegram/sessions");
const app = express();
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

const port = 8080; // default port to listen
const BASE_TEMPLATE = `
<!DOCTYPE html>
<html>
    <head>
        <meta charset='UTF-8'>
        <title>GramJS + Express</title>
    </head>
    <body>{{0}}</body>
</html>
`;

const PHONE_FORM = `
<form action='/' method='post'>
    Phone (international format): <input name='phone' type='text' placeholder='+34600000000'>
    <input type='submit'>
</form>
`;

const CODE_FORM = `
<form action='/' method='post'>
    Telegram code: <input name='code' type='text' placeholder='70707'>
    <input type='submit'>
</form>
`;

const PASSWORD_FORM = `
<form action='/' method='post'>
    Telegram password: <input name='password' type='text' placeholder='your password (leave empty if no password)'>
    <input type='submit'>
</form>
`;
const API_ID = -1; // Fill your API ID
const API_HASH = ""; // Fill your API Hash

// Single client; can use an object if you want to store multiple clients
const client = new TelegramClient(
  new StoreSession("session_name"),
  API_ID,
  API_HASH,
  {}
);
let phone;
let phoneCodeHash; // needed for sign in
// define a route handler for the default home page
app.get("/", async (req, res) => {
  if (await client.isUserAuthorized()) {
    const dialog = (await client.getDialogs({ limit: 1 }))[0];

    let result = `<h1>${dialog.title}</h1>.`;
    for (const m of await client.getMessages(dialog.entity, { limit: 10 })) {
      result += formatMessage(m);
    }

    return res.send(BASE_TEMPLATE.replace("{{0}}", result));
  } else {
    return res.send(BASE_TEMPLATE.replace("{{0}}", PHONE_FORM));
  }
});
app.post("/", async (req, res) => {
  //To access POST variable use req.body()methods.
  if ("phone" in req.body) {
    phone = req.body.phone;
    const result = await client.sendCode(
      {
        apiId: API_ID,
        apiHash: API_HASH,
      },
      phone
    );
    phoneCodeHash = result.phoneCodeHash;
    return res.send(BASE_TEMPLATE.replace("{{0}}", CODE_FORM));
  }

  if ("code" in req.body) {
    try {
      await client.invoke(
        new Api.auth.SignIn({
          phoneNumber: phone,
          phoneCodeHash,
          phoneCode: req.body.code,
        })
      );
    } catch (err) {
      if (err.errorMessage === "SESSION_PASSWORD_NEEDED") {
        return res.send(BASE_TEMPLATE.replace("{{0}}", PASSWORD_FORM));
      }
    }
  }
  if ("password" in req.body) {
    await client.signInWithPassword(
      {
        apiId: API_ID,
        apiHash: API_HASH,
      },
      {
        password: req.body.password,
        onError: (err) => {
          throw err;
        },
      }
    );
  }
  res.redirect("/");
});

function formatMessage(message) {
  let content = (message.text || "(action message or media)").replace(
    "\n",
    "<br>"
  );
  return `<p><strong>${utils.getDisplayName(
    message.sender
  )}</strong>: ${content}<sub>${message.date}</sub></p>`;
}

// callbacks for code and password also
// then inside your grammy code when use sends phone do the following
// start the Express server
app.listen(port, async () => {
  client.session.setDC(2, "149.154.167.40", 80);
  client.setParseMode("html");
  // Connect before fully starting the server
  await client.connect();
  console.log(`server started at http://localhost:${port}`);
});