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use crate::executor::mailbox::MAILBOX;
use abi::syscall::{
    serial::{SerialError, SerialRequest, SerialResponse},
    KernelResponseBody, UserRequestBody,
};

#[allow(dead_code)]
pub struct SerialPort {
    port: u16,
}

impl SerialPort {
    pub async fn open(req_port: u16) -> Result<Self, SerialError> {
        let msg = UserRequestBody::Serial(SerialRequest::OpenPort { port: req_port });
        if let Ok(KernelResponseBody::Serial(sr)) = MAILBOX.request(msg).await {
            if let SerialResponse::OpenPort { port } = sr? {
                if port == req_port {
                    return Ok(SerialPort { port });
                }
            }
        }
        Err(SerialError::Unknown)
    }
}