promptpay_rs/
error.rs

1use std::{error::Error, fmt};
2
3/// Custom error type for PromptPay QR generation failures.
4///
5/// This error is used throughout the library to indicate issues such as:
6/// - Empty merchant ID
7/// - Invalid payload
8/// - QR code generation failure
9#[derive(Debug)]
10pub struct PromptPayError {
11    details: String, // ข้อความอธิบายข้อผิดพลาด
12}
13
14impl PromptPayError {
15    /// Creates a new `PromptPayError` with a custom message.
16    ///
17    /// # Arguments
18    /// * `msg` - A descriptive error message
19    ///
20    /// # Returns
21    /// A new `PromptPayError` instance
22    ///
23    /// # Example
24    /// ```rust
25    /// use promptpay_rs::PromptPayError;
26    /// let err = PromptPayError::new("Invalid phone number");
27    /// ```
28    pub fn new(msg: &str) -> PromptPayError {
29        PromptPayError {
30            details: msg.to_string(),
31        }
32    }
33}
34
35impl fmt::Display for PromptPayError {
36    /// Formats the error for display (e.g., in `println!` or `eprintln!`).
37    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
38        write!(f, "{}", self.details)
39    }
40}
41
42impl Error for PromptPayError {
43    /// Returns a short description of the error (legacy method).
44    ///
45    /// **Note**: Prefer using `Display` implementation for user-facing messages.
46    fn description(&self) -> &str {
47        &self.details
48    }
49}
promptpay_rs/error.rs

promptpay_rs/
error.rs
