local apps = {}
local containers = loadfile("/libs/containers.lua")()
local focusedapp = nil
_G.app = {}
function _G.app.focusapp(pid)
    print("focusing "..pid)
    if focusedapp ~= nil and focusedapp.win ~= nil then
        focusedapp.win.setVisible(false)
    end
    focusedapp = apps[pid]
    print(focusedapp)
    if focusedapp ~= nil and focusedapp.win ~= nil then
        focusedapp.win.setVisible(true)
    end
end
function _G.app.launch(id)
    local w,h = term.getSize()
    if not fs.exists(fs.combine("/apps",id)) then return false,"App Not Found" end
    local win = window.create(term.native(),1,2,w,h-2,false)
    print("loading "..id)
    local env = containers.getENV(fs.combine("/apps",id),true, win)
    local appobj = {win=win,co=nil,id=id,title=""}
    function env.setAppTitle(str) appobj.title=str end
    print("loaded "..id)
    appobj.co = coroutine.create(function () containers.start(env) end)
    local pid = -1
    for k=1,#apps+1 do
        if apps[k] == nil then
            apps[k] = appobj
            pid = k
        end
    end
    app.focusapp(pid)
end

local function render()
    while true do
        local w,h = term.getSize()
        term.setCursorPos(1,1)
        term.setBackgroundColor(colors.black)
        term.clearLine()
        term.write(os.date("%I:%M %p"))
        local candidate = network.getCandidate()
        local right = "id: "..tostring(candidate.id).." dist: "..tostring(math.floor(candidate.distance+0.5)).." m"
        if candidate.id == -1 then
            right = "disconnected"
        end
        term.setCursorPos(w-right:len()+1,1)
        term.write(right)
        sleep()
    end
end

local function process()
    while true do
        local event = {os.pullEvent()}
        if focusedapp then
            if focusedapp.event then
                local success, content = coroutine.resume(focusedapp.co,table.unpack(focusedapp.event))
                if success then
                    focusedapp.event = nil
                    focusedapp.filter = content
                else
                    app.focusapp(-1)
                end
            elseif focusedapp.filter == nil or focusedapp.filter == event[1] then
                local success, content = coroutine.resume(focusedapp.co,table.unpack(event))
                if success then
                    focusedapp.filter = content
                else
                    app.focusapp(-1)
                end
            end
        end
        for k,v in pairs(apps) do
            if v.filter == nil or v.filter == event[1] and v.event == nil and not v == focusedapp then
                v.event = event
            end
        end
    end
end
print("launching test..")
app.launch("test")
print("launched")
parallel.waitForAny(process,render,network.run)