tplay 0.3.0

A terminal based media player that visualizes images and videos as ASCII art.
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use crate::common::errors::MyError;
use libmpv::Mpv;

/// The AudioPlayer struct handles audio playback using the libmpv backend.
pub struct AudioPlayer {
    /// The mpv instance responsible for managing the audio playback.
    mpv: Mpv,
}

impl AudioPlayer {
    /// Creates a new AudioPlayer instance.
    ///
    /// # Arguments
    ///
    /// * input_path - The path to the audio file to be played.
    ///
    /// # Returns
    ///
    /// A new AudioPlayer instance.
    pub fn new(input_path: &str) -> Result<Self, MyError> {
        let mpv = Mpv::new().expect("Failed to init MPV builder");

        mpv.set_property("vid", "no")
            .map_err(|err| MyError::Audio(format!("Failed to set no-video property: {:?}", err)))?;
        mpv.set_property("audio-display", "no").map_err(|err| {
            MyError::Audio(format!(
                "Failed to set no-audio-display property: {:?}",
                err
            ))
        })?;
        // mpv.set_property("audio-file-auto", "load").map_err(|err| {
        //     MyError::Audio(format!("Failed to set audio-file-auto property: {:?}", err))
        // })?;

        mpv.command("loadfile", &[input_path])
            .map_err(|err| MyError::Audio(format!("Failed to load audio file: {:?}", err)))?;
        mpv.set_property("pause", true)
            .map_err(|err| MyError::Audio(format!("Failed to set pause property: {:?}", err)))?;

        Ok(Self { mpv })
    }

    /// Pauses the audio playback.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn pause(&mut self) -> Result<(), MyError> {
        self.mpv
            .set_property("pause", true)
            .map_err(|err| MyError::Audio(format!("{:?}", err)))
    }

    /// Resumes the audio playback.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn resume(&mut self) -> Result<(), MyError> {
        self.mpv
            .set_property("pause", false)
            .map_err(|err| MyError::Audio(format!("{:?}", err)))
    }

    /// Toggles the playback state (play/pause) of the audio.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn toggle_play(&mut self) -> Result<(), MyError> {
        let paused = self
            .mpv
            .get_property("pause")
            .map_err(|err| MyError::Audio(format!("{:?}", err)))?;

        if paused {
            self.resume()
        } else {
            self.pause()
        }
    }

    /// Mutes the audio playback.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn mute(&mut self) -> Result<(), MyError> {
        self.mpv
            .set_property("mute", true)
            .map_err(|err| MyError::Audio(format!("{:?}", err)))
    }

    /// Unmutes the audio playback.

    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn unmute(&mut self) -> Result<(), MyError> {
        self.mpv
            .set_property("mute", false)
            .map_err(|err| MyError::Audio(format!("{:?}", err)))
    }

    /// Toggles the mute state of the audio.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn toggle_mute(&mut self) -> Result<(), MyError> {
        let muted = self
            .mpv
            .get_property("mute")
            .map_err(|err| MyError::Audio(format!("{:?}", err)))?;

        if muted {
            self.unmute()
        } else {
            self.mute()
        }
    }

    /// Stops the audio playback.
    ///
    /// # Returns
    ///
    /// A `Result` indicating success or an `MyError::Audio` error.
    pub fn stop(&mut self) -> Result<(), MyError> {
        self.mpv
            .command("stop", &["false"])
            .map_err(|err| MyError::Audio(format!("{:?}", err)))
    }
}