ferogram 0.6.4

Production-grade async Telegram MTProto client: updates, bots, flood-wait, dialogs, messages
Documentation 
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

// Copyright (c) Ankit Chaubey <ankitchaubey.dev@gmail.com>
//
// ferogram: async Telegram MTProto client in Rust
// https://github.com/ankit-chaubey/ferogram
//
// Licensed under either the MIT License or the Apache License 2.0.
// See the LICENSE-MIT or LICENSE-APACHE file in this repository:
// https://github.com/ankit-chaubey/ferogram
//
// Feel free to use, modify, and share this code.
// Please keep this notice when redistributing.

//! List every dialog (chat) in the account, newest first, with unread counts.
//!
//! Enumerating the full dialog list is impossible over the Bot API - bots only
//! learn about chats they are added to. MTProto gives you the complete picture
//! across all DMs, groups, channels and bots in one paginated walk.
//!
//! Run:
//!   cargo run --example dialogs_list
//!
//! Fill in API_ID, API_HASH and PHONE below, then run. Session is reused on
//! subsequent runs.

use ferogram::{Client, TransportKind};

const API_ID: i32 = 0; // from https://my.telegram.org
const API_HASH: &str = ""; // from https://my.telegram.org
const PHONE: &str = ""; // e.g. "+15551234567"

/// Stop after printing this many dialogs. Set to 0 for no limit (walks the
/// entire account - may take a few seconds for large accounts).
const MAX_DIALOGS: usize = 50;

#[tokio::main]
async fn main() {
    if let Err(e) = run().await {
        eprintln!("error: {e}");
        std::process::exit(1);
    }
}

async fn run() -> Result<(), Box<dyn std::error::Error>> {
    if API_ID == 0 || API_HASH.is_empty() || PHONE.is_empty() {
        eprintln!("Fill in API_ID, API_HASH and PHONE at the top of dialogs_list.rs");
        std::process::exit(1);
    }

    println!("Connecting...");
    let (client, _shutdown) = Client::builder()
        .api_id(API_ID)
        .api_hash(API_HASH)
        .transport(TransportKind::Abridged)
        .connect()
        .await?;

    if !client.is_authorized().await? {
        login(&client).await?;
        client.save_session().await?;
        println!("Session saved.");
    }

    let me = client.get_me().await?;
    let display = me
        .first_name
        .as_deref()
        .unwrap_or(me.username.as_deref().unwrap_or("?"));
    println!("Logged in as {display}\n");

    let limit_label = if MAX_DIALOGS == 0 {
        "all".to_string()
    } else {
        MAX_DIALOGS.to_string()
    };
    println!("Dialogs ({limit_label}):\n{}", "-".repeat(60));

    // iter_dialogs() pages through GetDialogs automatically.
    // Each Dialog carries the chat entity and the top message already resolved.
    let mut iter = client.iter_dialogs();
    let mut n = 0usize;
    let mut total_unread = 0i32;

    while let Some(dialog) = iter.next(&client).await? {
        n += 1;
        let unread = dialog.unread_count();
        total_unread += unread;

        let badge = if unread > 0 {
            format!("  [{unread} unread]")
        } else {
            String::new()
        };

        // Print total once we get it back from the first server response.
        if n == 1 {
            if let Some(total) = iter.total() {
                println!("Total dialogs reported by server: {total}\n");
            }
        }

        println!("{n:>4}. {}{badge}", dialog.title());

        if MAX_DIALOGS > 0 && n >= MAX_DIALOGS {
            println!("... (truncated at {MAX_DIALOGS})");
            break;
        }
    }

    println!(
        "{}\nShowed {n} dialog(s), {total_unread} total unread message(s).",
        "-".repeat(60)
    );
    Ok(())
}

async fn login(client: &Client) -> Result<(), Box<dyn std::error::Error>> {
    let name = client.interactive_sign_in(PHONE).await?;
    println!("Signed in as {name}");
    Ok(())
}