trade_vision 0.1.1

Unofficial API for TradingView
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

//! Houses utility functions that are used throughout the program to certain functions
//! which allow for communication with the TradingView server

use rand::distributions::Alphanumeric;
use rand::{thread_rng, Rng};

/// Generates a random session ID.
///
/// The session ID is a string in the format `prefix_random_string`, where `prefix` is an optional
/// parameter and `random_string` is a 12-character alphanumeric string. If `prefix` is not
/// provided by passing `None`, the default prefix "xs" is used.
///
/// Returns a randomly generated session id
///
/// # Examples
///
/// ```
/// use trade_vision::utils::generate_session_id;
/// let session_id = generate_session_id(None);
/// assert!(session_id.starts_with("qs_"));
///
/// let session_id = generate_session_id(Some("foo"));
/// assert!(session_id.starts_with("foo_"));
/// ```
///
pub fn generate_session_id(prefix: Option<&str>) -> String {
    let mut rng = thread_rng();
    let random_string: String = (&mut rng)
        .sample_iter(Alphanumeric)
        .take(12)
        .map(char::from)
        .collect();

    format!("{}_{}", prefix.unwrap_or("qs"), random_string)
}

#[test]
fn test_generate_session_id() {
    let session_id = generate_session_id(None);
    assert!(
        session_id.starts_with("qs_"),
        "Expected prefix 'qs_', got {}",
        session_id
    );
    assert_eq!(
        session_id.len(),
        15,
        "Expected length 15, got {}",
        session_id.len()
    );

    let session_id = generate_session_id(Some("foo"));
    assert!(
        session_id.starts_with("foo_"),
        "Expected prefix 'foo_', got {}",
        session_id
    );
    assert_eq!(
        session_id.len(),
        16,
        "Expected length 16, got {}",
        session_id.len()
    );
}