struct Point {
    x: i32,
    y: i32
}

fn main() {
    let result = get_coordinates(1, 1, 69, 28);
    draw_line(result, 70, 30);
}

fn get_coordinates(x1: i32, y1: i32, x2: i32, y2: i32) -> Vec<Point> {
    let mut coordinates = vec![];
    let dx:i32 = i32::abs(x2 - x1);
    let dy:i32 = i32::abs(y2 - y1);
    let sx:i32 = {
        if x1 < x2 {
            1
        } else {
            -1
        }
    };
    let sy:i32 ={
        if y1 < y2 {
            1
        } else {
            -1
        }
    };
    let mut error:i32 = dx - dy;
    let mut current_x:i32 = x1;
    let mut current_y:i32 = y1;
    coordinates.push(Point { x: current_x, y: current_y });
    while current_x != x2 && current_y != y2 {
        let error2:i32 = 2 * error;
        if error2 >= i32::abs(dy) {
            error -= dy;
            current_x += sx;
            coordinates.push(Point { x: current_x, y: current_y });
        } else if error2 <= i32::abs(dx) {
            error += dx;
            current_y += sy;
            coordinates.push(Point { x: current_x, y: current_y });
        }
    }
    coordinates
}

fn draw_line(line: std::vec::Vec<Point>, width: i32, height: i32) {
    for col in 0..height {
        for row in 0..width {
            let is_point_in_line = line.iter().any(| point| point.x == row && point.y == col);
            match is_point_in_line {
                true => print!("❖"),
                _ => {
                    if col == 0 || col == (height - 1) || row == 0 || row == (width - 1) {
                        print!("☗");
                    } else {
                        print!(".");
                    }
                }
            };
        }
        print!("\n");
    }
}