require "ui"
require "util"

msgbox = {
    title = "TITOL",
    text = { "Este es el missatge.", "Pot estar en varies linies" },
    buttons = { {"YES", sys.quit}, {"NO", app.pop} },
    selected = 0,
    w = 100,
    h = 50,

    show = function(title, text, buttons, default)
        msgbox.selected = default or 1
        msgbox.title = title
        msgbox.text = text
        msgbox.buttons = buttons

        msgbox.w = 0
        for i,v in ipairs(msgbox.text) do
            local width = #v*4+8
            if width > msgbox.w then msgbox.w = width end
        end

        msgbox.h = #msgbox.text*6+35

        app.push(msgbox.update)
    end,

    update = function()
        local top = (160-msgbox.w)//2 
        local left = (104-msgbox.h)//2
        view.clip(top, left, msgbox.w, msgbox.h)
        view.origin(top, left)
        draw.outset(0, 0, msgbox.w, msgbox.h)

        draw.rectf(1,1,msgbox.w-2, 7, 21)
        draw.text(msgbox.title, 2, 2, 28)

        local y = 12
        for i,v in ipairs(msgbox.text) do
            draw.text(v, 5, y, 1)
            y = y + 6
        end

        local mx, my = mouse.pos()

        local x = msgbox.w - 35
        y = msgbox.h - 12
        for i,v in ipairs(msgbox.buttons) do
            local inside = util.inside(mx, my, {x, y, 32, 9})
            draw.outset(x, y, 32, 9)
            if inside then
                draw.rectf(x+1,y+1,30,7,27)
                if mouse.down(mouse.LEFT) then draw.inset(x, y, 32, 9) end
            end
            local offset = (32-#v[1]*4)//2
            draw.text(v[1], x+1+offset, y+2, 1)
            if (i==msgbox.selected) then
                draw.rect(x-1, y-1, 34, 11, 1)
            end
            if mouse.press(mouse.LEFT) then
                if inside then
                    v[2]()
                end
            end
            x = x - 34
        end

        if key.press(key.ESCAPE) then
            app.pop()
        end
    end
}