promptparse 1.1.0

All-in-one Rust library for PromptPay & EMVCo QR Codes
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
121
122
123
124
125
126
127
128

use crate::generate::bill_payment;
use crate::generate::BillPaymentConfig;
use crate::Result;
use std::fmt;

#[derive(Debug, Clone)]
pub struct BotBarcode {
    pub biller_id: String,
    pub ref1: String,
    pub ref2: Option<String>,
    pub amount: Option<f64>,
}

impl BotBarcode {
    pub fn new(biller_id: String, ref1: String, ref2: Option<String>, amount: Option<f64>) -> Self {
        Self {
            biller_id,
            ref1,
            ref2,
            amount,
        }
    }

    pub fn from_string(payload: &str) -> Option<Self> {
        if !payload.starts_with('|') {
            return None;
        }

        let data: Vec<&str> = payload[1..].split('\r').collect();
        if data.len() != 4 {
            return None;
        }

        let biller_id = data[0].to_string();
        let ref1 = data[1].to_string();
        let ref2 = if data[2].is_empty() {
            None
        } else {
            Some(data[2].to_string())
        };

        let amount = if data[3] == "0" {
            None
        } else {
            data[3].parse::<i32>().ok().map(|amt| (amt as f64) / 100.0)
        };

        Some(Self::new(biller_id, ref1, ref2, amount))
    }

    /// Converts BOT Barcode to PromptPay QR Tag 30 (Bill Payment)
    ///
    /// This method works for some biller, depends on destination bank
    pub fn to_qr_tag30(&self) -> Result<String> {
        let config = BillPaymentConfig {
            biller_id: self.biller_id.clone(),
            amount: self.amount,
            ref1: self.ref1.clone(),
            ref2: self.ref2.clone(),
            ref3: None,
        };

        bill_payment(config)
    }
}

impl fmt::Display for BotBarcode {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let amount_str = self
            .amount
            .map(|amt| ((amt * 100.0) as i32).to_string())
            .unwrap_or_else(|| "0".to_string());

        write!(
            f,
            "|{}\r{}\r{}\r{}",
            self.biller_id,
            self.ref1,
            self.ref2.as_deref().unwrap_or(""),
            amount_str
        )
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_bot_barcode_from_string() {
        let payload = "|099999999999990\r111222333444\r\r0";
        let barcode = BotBarcode::from_string(payload).unwrap();

        assert_eq!(barcode.biller_id, "099999999999990");
        assert_eq!(barcode.ref1, "111222333444");
        assert_eq!(barcode.ref2, None);
        assert_eq!(barcode.amount, None);
    }

    #[test]
    fn test_bot_barcode_with_ref2_and_amount() {
        let payload = "|099400016550100\r123456789012\r670429\r364922";
        let barcode = BotBarcode::from_string(payload).unwrap();

        assert_eq!(barcode.biller_id, "099400016550100");
        assert_eq!(barcode.ref1, "123456789012");
        assert_eq!(barcode.ref2, Some("670429".to_string()));
        assert_eq!(barcode.amount, Some(3649.22));
    }

    #[test]
    fn test_bot_barcode_to_string() {
        let barcode = BotBarcode::new(
            "099999999999990".to_string(),
            "111222333444".to_string(),
            None,
            None,
        );

        assert_eq!(barcode.to_string(), "|099999999999990\r111222333444\r\r0");
    }

    #[test]
    fn test_bot_barcode_invalid_format() {
        assert!(BotBarcode::from_string("invalid").is_none());
        assert!(BotBarcode::from_string("|too\rfew\rparts").is_none());
    }
}