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use ::graphic;
use ::pty;

#[repr(u32)]
#[derive(Clone, Copy, Debug, Hash, Eq, PartialEq)]
pub enum Cardinal {
    UpperLeft = 0,
    UpperMiddle = 1,
    UpperRight = 2,
    MiddleLeft = 3,
    MiddleCentral = 4,
    MiddleRight = 5,
    LowerLeft = 6,
    LowerMiddle = 7,
    LowerRight = 8,
}

impl Cardinal {
    pub fn get_coordinate(&self, size: &pty::Winszed) -> (usize, usize) {
        let width: usize = (*size).get_col();
        let height: usize = (*size).get_row();
        if width > graphic::SPEC_MAX_X && height > graphic::SPEC_MAX_Y {
            match *self {
                Cardinal::UpperLeft => (0, 0),
                Cardinal::UpperMiddle => {
                    ((width / 2) - (graphic::SPEC_MAX_X / 2), 0)
                }
                Cardinal::UpperRight => (width - graphic::SPEC_MAX_X, 0),
                Cardinal::MiddleLeft => {
                    (0, (height / 2) - (graphic::SPEC_MAX_Y / 2))
                }
                Cardinal::MiddleCentral => {
                    ((width / 2) - (graphic::SPEC_MAX_X / 2),
                     (height / 2) - (graphic::SPEC_MAX_X / 2))
                }
                Cardinal::MiddleRight => {
                    (width - graphic::SPEC_MAX_X,
                     (height / 2) - (graphic::SPEC_MAX_Y / 2))
                }
                Cardinal::LowerLeft => (0, height - graphic::SPEC_MAX_Y),
                Cardinal::LowerMiddle => {
                    ((width / 2) - (graphic::SPEC_MAX_X / 2),
                     height - graphic::SPEC_MAX_Y)
                }
                Cardinal::LowerRight => {
                    (width - graphic::SPEC_MAX_X,
                     height - graphic::SPEC_MAX_Y)
                }
            }
        } else {
            (0, 0)
        }
    }
}

impl Default for Cardinal {
    fn default() -> Cardinal {
        Cardinal::LowerRight
    }
}