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/*
 * File: delay.rs
 * Project: src
 * Created Date: 01/06/2022
 * Author: Shun Suzuki
 * -----
 * Last Modified: 01/06/2022
 * Modified By: Shun Suzuki (suzuki@hapis.k.u-tokyo.ac.jp)
 * -----
 * Copyright (c) 2022 Shun Suzuki. All rights reserved.
 *
 */

use anyhow::Result;

use itertools::Itertools;

use autd3_driver::NUM_TRANS_IN_UNIT;

use crate::{
    geometry::{Geometry, Transducer},
    interface::{DatagramBody, Empty, Filled, Sendable},
};

pub struct ModDelay {
    sent: bool,
}

impl<T: Transducer> DatagramBody<T> for ModDelay {
    fn init(&mut self) -> Result<()> {
        self.sent = false;
        Ok(())
    }

    fn pack(&mut self, geometry: &Geometry<T>, tx: &mut autd3_driver::TxDatagram) -> Result<()> {
        autd3_driver::null_body(tx);
        if DatagramBody::<T>::is_finished(self) {
            return Ok(());
        }

        let delays: Vec<[u16; NUM_TRANS_IN_UNIT]> = geometry
            .transducers()
            .map(|tr| tr.mod_delay())
            .chunks(NUM_TRANS_IN_UNIT)
            .into_iter()
            .map(|c| c.collect::<Vec<_>>())
            .map(|v| v.try_into().unwrap())
            .collect();

        self.sent = true;
        autd3_driver::mod_delay(&delays, tx)?;
        Ok(())
    }

    fn is_finished(&self) -> bool {
        self.sent
    }
}

impl<T: Transducer> Sendable<T> for ModDelay {
    type H = Empty;
    type B = Filled;

    fn init(&mut self) -> Result<()> {
        DatagramBody::<T>::init(self)
    }

    fn pack(
        &mut self,
        _msg_id: u8,
        geometry: &Geometry<T>,
        tx: &mut autd3_driver::TxDatagram,
    ) -> Result<()> {
        DatagramBody::<T>::pack(self, geometry, tx)
    }

    fn is_finished(&self) -> bool {
        DatagramBody::<T>::is_finished(self)
    }
}