.menu

require('config')

local version = 1.2
local DISK_SIDE = 'bottom'
local W, H = term.getSize()
local totalSpace = 2097152
local totalSpaceFloppy = 524288
local freeSpace = fs.getFreeSpace('/')

local debug = false

local selected = 1

choice = {}
function addChoice(name, path, spacer)
    choice[#choice+1] = {}
    choice[#choice].name = name
    choice[#choice].path = path
end

setup_menu()

local timeout = os.startTimer(1)

while true do
    local dt = 0

    term.clear()

    term.setCursorPos(1, 1)
    term.write('bubOS 2019 v'..version)
    term.setCursorPos(W-4, 1)
    term.write(textutils.formatTime(os.time(), true))

    term.setCursorPos(W-tostring(freeSpace..'B / '..totalSpace..'B free'):len(), H-1)
    term.write(freeSpace..'B / '..totalSpace..'B free')
    term.setCursorPos(1, H-1)
    term.write('[')
    for n = 1, W/2-2 do
        if n < (W/2-2)*(totalSpace-freeSpace)/totalSpace then
            term.write('|')
        end
    end
    term.setCursorPos(W/2, H-1)
    term.write(']')

    if disk.isPresent(DISK_SIDE) and disk.hasData(DISK_SIDE) then
        term.setCursorPos(W-tostring(fs.getFreeSpace('disk')..'B / '..totalSpaceFloppy..'B free'):len(), H)
        term.write(fs.getFreeSpace('disk')..'B / '..totalSpaceFloppy..'B free')
        term.setCursorPos(W/4, H)
        term.write('disk')
        term.setCursorPos(1, H)
        term.write('[')
        for n = 1, W/2-2 do
            if n < (W/2-2)*(totalSpaceFloppy-fs.getFreeSpace('disk'))/totalSpaceFloppy then
                term.write('|')
            end
        end
        term.setCursorPos(W/2, H)
        term.write(']')
    end

    for n = 1, #choice do
        term.setCursorPos(W/2+3-choice[n].name:len(), (H-#choice)/2+n-1)
        term.write(choice[n].name)
        if n == selected then
            term.write(' <-')
        end
    end

    term.setCursorPos(1, H)
    if debug then
        term.write('['..selected..'] '..choice[selected].path)
    end

    local event = {os.pullEvent()}

    if event[1] == 'key' then
        if event[2] == keys.up then
            selected = selected - 1
        elseif event[2] == keys.down then
            selected = selected + 1
        end
        if selected > #choice then
            selected = 1
        end
        if selected < 1 then
            selected = #choice
        end

        if event[2] == 28 then
            shell.run(choice[selected].path)
            return
        end

        if event[2] == 50 then
            term.clear()
            term.setCursorPos(1, 1)
            peripheral.wrap('top').setTextScale(0.5)
            shell.run('monitor top', choice[selected].path)
            return
        end

        if event[2] == 59 then
            debug = not debug
        end
    elseif event[1] == 'monitor_touch' or event[1] == 'mouse_click' then
        --shell.run(choice[selected].path)
        --return
    elseif event[1] == 'timer' and event[2] == timeout then
        timeout = os.startTimer(1)
    end
end