local preferred_alangs = {"jpn", "ja", "japanese"}
local preferred_slangs = {"jpn", "ja", "japanese"}

local phrases = {
    "日本語オンリーで行こう！英語なんて大嫌い！",
    "これで完全に日本語モードです！",
    "やったね！日本語が優先されました！",
    "日本語が一番！英語は嫌いだ！",
    "今、完全に日本語です！英語はなし！"
}

function select_tracks()
    local tracks = mp.get_property_native("track-list")

    -- Disable all subtitles at the beginning
    for _, track in ipairs(tracks) do
        if track.type == "sub" then
            mp.set_property("sid", "no", track.id)
        end
    end

    local japanese_subtitle_tracks = {}

    -- Enable Japanese subtitles if available
    for _, track in ipairs(tracks) do
        if track.type == "sub" and table.contains(preferred_slangs, track.lang) then
            table.insert(japanese_subtitle_tracks, track.id)
        end
    end

    if #japanese_subtitle_tracks > 0 then
        mp.set_property("sid", japanese_subtitle_tracks[1])
    end

    -- Add a delay to ensure the tracks are loaded before displaying the phrase
    mp.add_timeout(5, function()
        show_phrase()
    end)
end

function table.contains(table, value)
    for _, v in ipairs(table) do
        if v == value then
            return true
        end
    end
    return false
end

function show_phrase()
    local phrase = phrases[math.random(#phrases)]
    mp.osd_message(phrase, 2000)
end

mp.register_event("file-loaded", select_tracks)

-- Ensure the phrase shows up when MPV is not in idle mode
if not mp.get_property_native("idle") then
    select_tracks()
end