obs = obslua

-- User settings
settings = {
    text_source_name = "",
    prefix = "",
    suffix = "",
    seconds_option = "show",
    test_mode = false
}

start_time = nil
update_interval = 1 -- Update every second
timer_active = false
test_mode_active = false

-- Script description
function script_description()
    return "K_STYER's Dynamic Uptimer\n\nZeigt die Stream-Laufzeit (Uptime) in einem Text-Quellobjekt an.\n\nEinstellungen:\n- Präfix und Suffix\n- Sekundenanzeige Optionen\n- Testmodus\n\nAnwendung:\nLade das Skript in OBS, konfiguriere die Textquelle und wähle die gewünschten Optionen aus."
end

-- Script properties
function script_properties()
    local props = obs.obs_properties_create()

    obs.obs_properties_add_text(props, "text_source_name", "Textquelle", obs.OBS_TEXT_DEFAULT)
    obs.obs_properties_add_text(props, "prefix", "Präfix", obs.OBS_TEXT_DEFAULT)
    obs.obs_properties_add_text(props, "suffix", "Suffix", obs.OBS_TEXT_DEFAULT)
    
    local seconds_options = obs.obs_properties_add_list(props, "seconds_option", "Sekundenanzeige", obs.OBS_COMBO_TYPE_LIST, obs.OBS_COMBO_FORMAT_STRING)
    obs.obs_property_list_add_string(seconds_options, "Anzeigen", "show")
    obs.obs_property_list_add_string(seconds_options, "Ausblenden", "hide")
    obs.obs_property_list_add_string(seconds_options, "Nach der ersten Minute ausblenden", "hide_after_first_minute")
    
    obs.obs_properties_add_bool(props, "test_mode", "Testmodus")

    return props
end

-- Script update
function script_update(new_settings)
    settings.text_source_name = obs.obs_data_get_string(new_settings, "text_source_name")
    settings.prefix = obs.obs_data_get_string(new_settings, "prefix")
    settings.suffix = obs.obs_data_get_string(new_settings, "suffix")
    settings.seconds_option = obs.obs_data_get_string(new_settings, "seconds_option")
    settings.test_mode = obs.obs_data_get_bool(new_settings, "test_mode")
    
    -- Restart the timer with updated settings
    if timer_active then
        obs.timer_remove(update_text_source)
        obs.timer_add(update_text_source, update_interval * 1000)
    end
    
    -- Handle test mode activation and deactivation
    if settings.test_mode and not test_mode_active then
        start_time = os.time()
        test_mode_active = true
        if not timer_active then
            obs.timer_add(update_text_source, update_interval * 1000)
            timer_active = true
        end
    elseif not settings.test_mode and test_mode_active then
        start_time = nil
        test_mode_active = false
        if timer_active then
            obs.timer_remove(update_text_source)
            timer_active = false
        end
    end
    
    -- Update the text immediately after settings change
    update_text_source()
end

-- Script defaults
function script_defaults(settings)
    obs.obs_data_set_default_string(settings, "prefix", "")
    obs.obs_data_set_default_string(settings, "suffix", "")
    obs.obs_data_set_default_string(settings, "seconds_option", "show")
    obs.obs_data_set_default_bool(settings, "test_mode", false)
end

-- Update the text source with the uptime
function update_text_source()
    if not settings.text_source_name or settings.text_source_name == "" then
        return
    end

    local source = obs.obs_get_source_by_name(settings.text_source_name)
    if source then
        local uptime = get_uptime()
        local text = settings.prefix .. uptime .. settings.suffix

        local settings_data = obs.obs_data_create()
        obs.obs_data_set_string(settings_data, "text", text)
        obs.obs_source_update(source, settings_data)
        obs.obs_data_release(settings_data)
        obs.obs_source_release(source)
    end
end

-- Get the formatted uptime
function get_uptime()
    if not start_time then
        return settings.seconds_option == "hide" and "00:00" or "00:00:00"
    end
    
    local now = os.time()
    local elapsed = now - start_time

    if settings.test_mode then
        elapsed = os.difftime(now, start_time)
    end

    local hours = math.floor(elapsed / 3600)
    local minutes = math.floor((elapsed % 3600) / 60)
    local seconds = elapsed % 60

    if settings.seconds_option == "hide" or (settings.seconds_option == "hide_after_first_minute" and elapsed >= 60) then
        return string.format("%02d:%02d", hours, minutes)
    else
        return string.format("%02d:%02d:%02d", hours, minutes, seconds)
    end
end

-- Start the timer when streaming starts
function on_event(event)
    if event == obs.OBS_FRONTEND_EVENT_STREAMING_STARTED then
        start_time = os.time()
        if not timer_active then
            obs.timer_add(update_text_source, update_interval * 1000)
            timer_active = true
        end
    elseif event == obs.OBS_FRONTEND_EVENT_STREAMING_STOPPED then
        start_time = nil
        if timer_active then
            obs.timer_remove(update_text_source)
            timer_active = false
        end
        update_text_source() -- Reset the display to 00:00 or 00:00:00
    end
end

-- Script load
function script_load(settings)
    obs.obs_frontend_add_event_callback(on_event)
end

-- Script unload
function script_unload()
    if timer_active then
        obs.timer_remove(update_text_source)
    end
end