use crate::player::{AudioBackend, SpotifyPlayerSettings};
use gio::prelude::SettingsExt;
use libadwaita::ColorScheme;
use librespot::playback::config::Bitrate;

const SETTINGS: &str = "dev.alextren.Spot";

#[derive(Clone, Debug, Default)]
pub struct WindowGeometry {
    pub width: i32,
    pub height: i32,
    pub is_maximized: bool,
}

impl WindowGeometry {
    pub fn new_from_gsettings() -> Self {
        let settings = gio::Settings::new(SETTINGS);
        Self {
            width: settings.int("window-width"),
            height: settings.int("window-height"),
            is_maximized: settings.boolean("window-is-maximized"),
        }
    }

    pub fn save(&self) -> Option<()> {
        let settings = gio::Settings::new(SETTINGS);
        settings.delay();
        settings.set_int("window-width", self.width).ok()?;
        settings.set_int("window-height", self.height).ok()?;
        settings
            .set_boolean("window-is-maximized", self.is_maximized)
            .ok()?;
        settings.apply();
        Some(())
    }
}

// Player (librespot) settings
impl SpotifyPlayerSettings {
    pub fn new_from_gsettings() -> Option<Self> {
        let settings = gio::Settings::new(SETTINGS);
        let bitrate = match settings.enum_("player-bitrate") {
            0 => Some(Bitrate::Bitrate96),
            1 => Some(Bitrate::Bitrate160),
            2 => Some(Bitrate::Bitrate320),
            _ => None,
        }?;
        let backend = match settings.enum_("audio-backend") {
            0 => Some(AudioBackend::PulseAudio),
            1 => Some(AudioBackend::Alsa(
                settings.string("alsa-device").as_str().to_string(),
            )),
            2 => Some(AudioBackend::GStreamer(
                "audioconvert dithering=none ! audioresample ! pipewiresink".to_string(), // This should be configurable eventually
            )),
            _ => None,
        }?;
        let gapless = settings.boolean("gapless-playback");

        let ap_port_val = settings.uint("ap-port");
        if ap_port_val > 65535 {
            panic!("Invalid access point port");
        }

        // Access points usually use port 80, 443 or 4070. Since gsettings
        // does not allow optional values, we use 0 to indicate that any
        // port is OK and we should pass None to librespot's ap-port.
        let ap_port = match ap_port_val {
            0 => None,
            x => Some(x as u16),
        };

        Some(Self {
            bitrate,
            backend,
            gapless,
            ap_port,
        })
    }
}

#[derive(Debug, Clone)]
pub struct SpotSettings {
    pub theme_preference: ColorScheme,
    pub player_settings: SpotifyPlayerSettings,
    pub window: WindowGeometry,
}

// Application settings
impl SpotSettings {
    pub fn new_from_gsettings() -> Option<Self> {
        let settings = gio::Settings::new(SETTINGS);
        let theme_preference = match settings.enum_("theme-preference") {
            0 => Some(ColorScheme::ForceLight),
            1 => Some(ColorScheme::ForceDark),
            2 => Some(ColorScheme::Default),
            _ => None,
        }?;
        Some(Self {
            theme_preference,
            player_settings: SpotifyPlayerSettings::new_from_gsettings()?,
            window: WindowGeometry::new_from_gsettings(),
        })
    }
}

impl Default for SpotSettings {
    fn default() -> Self {
        Self {
            theme_preference: ColorScheme::PreferDark,
            player_settings: Default::default(),
            window: Default::default(),
        }
    }
}