include("utils.jl")

function parse_input(filename)
    lines = collect(non_empty_lines(filename))
    dots = map(l->parse.(Int, split(l,',')), filter(line->Base.Unicode.isnumeric(line[1]), lines))

    folds = map(filter(line->!Base.Unicode.isnumeric(line[1]), lines)) do line
        front, coord = split(line, '=')
        'x' in front ? 1 : 2, parse(Int, coord)
    end
    sort(dots), folds
end

function solution13_2()
    dots, folds = parse_input("13.data")
    for (axis, coord) in folds
        foreach(dots) do dot
            if dot[axis] > coord
                dot[axis] -= 2 * (dot[axis] - coord)
            end
        end
        dots = sort(unique(dots))
    end
    for y in 0:5
        for x in 0:38
            if [x, y] in dots
                print('#')
            else
                print(' ')
            end
        end
        println("")
    end
end

solution13_2()