local wnd = Window("Hello", 1024, 768)
local rnd = Renderer(wnd)
local font = Font("asserts/msyh.ttf", 18)
local musicPlayer = MusicPlayer()

require("code/helper")

local all_bqb = fs.listdir("asserts/bqb_all")

for i, info in ipairs(all_bqb) do
    -- print (i, info.name, info.type, info.size)
    i = i
end

local all_music = fs.listdir("asserts/mp3")
table.remove(all_music, 1)
table.remove(all_music, 1)

local music_table = {}
local last_channel = 0
local next_channel = 1
local next_music = 1

for i, info in ipairs(all_music) do
    local filename = string.format("tmp\\tmp_%d.wav", i)
    ConvertMusic(string.format("asserts\\mp3\\%s",info.name), filename, function()
        print(filename, "convert finished.")
        wnd:setTimeout(function()
            print("Start loading: ", filename)
            local c = Chunk(filename)
            table.insert(music_table, c)
        end, 1000)
    end)
end

local texture_track = {}
setmetatable(texture_track, {
    __mode = "k"
})

wnd:show()

wnd:on('mousedown', function(x, y)
    print("Clicked", x, y)
    local t = font:renderText(rnd, string.format("%.0f,%.0f", x, y), {r=255,g=255,b=255,a=0,type="color"})
    texture_track[t] = true
    rnd:copyTo(t, {x=x,y=y,type="point"})
    rnd:update()
end)

wnd:on('mousemove', function(x, y, xrel, yrel)
    -- print("Mousemove", x, y, xrel, yrel)
end)

wnd:on('quit', function()
    print("before quit")
end)

wnd:on('keydown', function(key)
    if key == string.byte('q') then
        local current = collectgarbage("count")
        collectgarbage("collect")
        print("Before GC: ", current)
        print("After GC: ", collectgarbage("count"))
        return
    elseif key == string.byte("w") then
        local cnt = 0
        for k in pairs(texture_track) do
            cnt = cnt + 1
        end
        print ("Tracked texture: ", cnt)
        return
    elseif key == string.byte('p') then
        musicPlayer:fadeOutChannel(last_channel, 5000)
        if not music_table[next_music] then
            next_music = 1
        end
        print("Playing", next_music, next_channel)
        musicPlayer:fadeInChannel(music_table[next_music], next_channel, 1, 3000)
        next_music = next_music + 1
        last_channel = next_channel
        next_channel = next_channel + 1
        if next_channel >= 16 then
            next_channel = 0
        end
    end

    print("Keydown", key)
    rnd:clear()
    local t = rnd:loadTexture("asserts/bqb_all/" .. all_bqb[math.random(#all_bqb)].name)
    texture_track[t] = true
    rnd:copyTo(t, {x=0,y=0,type="point"})
    rnd:update()
end)

xpcall(function()
    wnd:start()
end, function(err)
    print("LuaMain Exception: ", err)
    print(debug.traceback())
end)