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#![doc = include_str!("../README.md")]

mod config;
mod platform;

use std::{fmt::Debug, time::Duration};

pub use config::*;
pub use platform::{Error, MediaControls};

/// The status of media playback.
#[derive(Clone, PartialEq, Eq, Debug)]
pub enum MediaPlayback {
    Stopped,
    Paused { progress: Option<MediaPosition> },
    Playing { progress: Option<MediaPosition> },
}

/// The metadata of a media item.
#[derive(Clone, PartialEq, Eq, Debug, Default)]
pub struct MediaMetadata<'a> {
    pub title: Option<&'a str>,
    pub album: Option<&'a str>,
    pub artist: Option<&'a str>,
    pub cover_url: Option<&'a str>,
    pub duration: Option<Duration>,
}

/// Events sent by the OS media controls.
#[derive(Clone, PartialEq, Debug)]
pub enum MediaControlEvent {
    Play,
    Pause,
    Toggle,
    Next,
    Previous,
    Stop,

    /// Seek forward or backward by an undetermined amount.
    Seek(SeekDirection),
    /// Seek forward or backward by a certain amount.
    SeekBy(SeekDirection, Duration),
    /// Set the position/progress of the currently playing media item.
    SetPosition(MediaPosition),
    /// Sets the volume. The value is intended to be from 0.0 to 1.0.
    /// But other values are also accepted. **It is up to the user to
    /// set constraints on this value.**
    /// **NOTE**: If the volume event was received and correctly handled,
    /// the user must call [`MediaControls::set_volume`]. Note that 
    /// this must be done only with the MPRIS backend.
    SetVolume(f64),
    /// Open the URI in the media player.
    OpenUri(String),

    /// Bring the media player's user interface to the front using any appropriate mechanism available.
    Raise,
    /// Shut down the media player.
    Quit,
}

/// An instant in a media item.
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub struct MediaPosition(pub Duration);

/// The direction to seek in.
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum SeekDirection {
    Forward,
    Backward,
}

impl Drop for MediaControls {
    fn drop(&mut self) {
        // Ignores errors if there are any.
        self.detach().ok();
    }
}

impl Debug for MediaControls {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.write_str("MediaControls")?;
        Ok(())
    }
}