#[derive(Default, Debug)]
pub struct Timer {
    tima: u8,
    tma: u8,
    tac: u8,
    timer_interrupt: bool
}

impl Timer {
    pub fn new() -> Timer {
        Timer::default()
    }

    pub fn write_byte(&mut self, addr: u16, val: u8) {
        match addr {
            0xFF05 => self.tima = val,
            0xFF06 => self.tma = val,
            0xFF07 => self.tac = val,
            _ => println!("Timer: Write {:02X} to {:04X} unsupported", val, addr),
        }
    }

    pub fn read_byte(&self, addr: u16) -> u8 {
        match addr {
            0xFF05 => self.tima,
            0xFF06 => self.tma,
            0xFF07 => self.tac,
            _ => {
                println!("Timer: Read from {:04X} unsupported", addr);
                0
            },
        }
    }

    pub fn timer_interrupt(&mut self) -> bool {
        // Returns whether or not a vblank interrupt should be done
        // Yes, this is polling, and yes, this sucks.\
        if self.timer_interrupt {
            self.timer_interrupt = false;
            true
        } else {
            false
        }
    }
}