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use embedded_hal::can::Frame;
mod transmitter;
pub use transmitter::Transmitter;

pub trait Transmit {
    type Frame: Frame;
    type Error;

    fn is_ready(&mut self) -> bool;

    fn transmit(&mut self, frame: &Self::Frame) -> nb::Result<(), Self::Error>;
}

#[cfg(feature = "mock")]
use super::MockFrame;

#[cfg(feature = "mock")]
#[derive(Default)]
pub struct MockTransmit {
    pub frames: Vec<MockFrame>,
}

#[cfg(feature = "mock")]
impl Transmit for MockTransmit {
    type Frame = MockFrame;

    type Error = ();

    fn is_ready(&mut self) -> bool {
        true
    }

    fn transmit(&mut self, frame: &Self::Frame) -> nb::Result<(), Self::Error> {
        self.frames.push(frame.clone());
        Ok(())
    }
}

#[cfg(feature = "bxcan")]
impl<I: bxcan::Instance> Transmit for bxcan::Tx<I> {
    type Frame = bxcan::Frame;
    type Error = core::convert::Infallible;

    fn is_ready(&mut self) -> bool {
        !self.is_idle()
    }

    fn transmit(&mut self, frame: &Self::Frame) -> nb::Result<(), Self::Error> {
        self.transmit(frame).map(|_| ())
    }
}