use std::sync::atomic::{AtomicBool, Ordering};

use anyhow::Result;
use gpui::App;
use schemars::JsonSchema;
use serde::{Deserialize, Serialize};
use settings::{Settings, SettingsKey, SettingsSources, SettingsStore, SettingsUi};

#[derive(Clone, Default, Serialize, Deserialize, JsonSchema, Debug, SettingsUi)]
pub struct AudioSettings {
    /// Opt into the new audio system.
    ///
    /// You need to rejoin a call for this setting to apply
    #[serde(rename = "experimental.rodio_audio", default)]
    pub rodio_audio: bool, // default is false
    /// Requires 'rodio_audio: true'
    ///
    /// Automatically increase or decrease you microphone's volume. This affects how
    /// loud you sound to others.
    ///
    /// Recommended: off (default)
    /// Microphones are too quite in zed, until everyone is on experimental
    /// audio and has auto speaker volume on this will make you very loud
    /// compared to other speakers.
    #[serde(
        rename = "experimental.auto_microphone_volume",
        default = "default_false"
    )]
    pub auto_microphone_volume: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Automatically increate or decrease the volume of other call members.
    /// This only affects how things sound for you.
    #[serde(rename = "experimental.auto_speaker_volume", default = "default_true")]
    pub auto_speaker_volume: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Remove background noises. Works great for typing, cars, dogs, AC. Does
    /// not work well on music.
    #[serde(rename = "experimental.denoise", default = "default_false")]
    pub denoise: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Use audio parameters compatible with the previous versions of
    /// experimental audio and non-experimental audio. When this is false you
    /// will sound strange to anyone not on the latest experimental audio. In
    /// the future we will migrate by setting this to false
    ///
    /// You need to rejoin a call for this setting to apply
    #[serde(
        rename = "experimental.legacy_audio_compatible",
        default = "default_true"
    )]
    pub legacy_audio_compatible: bool,
}
/// Configuration of audio in Zed.
#[derive(Clone, Default, Serialize, Deserialize, JsonSchema, Debug, SettingsUi, SettingsKey)]
#[serde(default)]
#[settings_key(key = "audio")]
pub struct AudioSettingsContent {
    /// Opt into the new audio system.
    ///
    /// You need to rejoin a call for this setting to apply
    #[serde(rename = "experimental.rodio_audio", default)]
    pub rodio_audio: bool, // default is false
    /// Requires 'rodio_audio: true'
    ///
    /// Automatically increase or decrease you microphone's volume. This affects how
    /// loud you sound to others.
    ///
    /// Recommended: off (default)
    /// Microphones are too quite in zed, until everyone is on experimental
    /// audio and has auto speaker volume on this will make you very loud
    /// compared to other speakers.
    #[serde(
        rename = "experimental.auto_microphone_volume",
        default = "default_false"
    )]
    pub auto_microphone_volume: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Automatically increate or decrease the volume of other call members.
    /// This only affects how things sound for you.
    #[serde(rename = "experimental.auto_speaker_volume", default = "default_true")]
    pub auto_speaker_volume: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Remove background noises. Works great for typing, cars, dogs, AC. Does
    /// not work well on music.
    #[serde(rename = "experimental.denoise", default = "default_false")]
    pub denoise: bool,
    /// Requires 'rodio_audio: true'
    ///
    /// Use audio parameters compatible with the previous versions of
    /// experimental audio and non-experimental audio. When this is false you
    /// will sound strange to anyone not on the latest experimental audio. In
    /// the future we will migrate by setting this to false
    ///
    /// You need to rejoin a call for this setting to apply
    #[serde(
        rename = "experimental.legacy_audio_compatible",
        default = "default_true"
    )]
    pub legacy_audio_compatible: bool,
}

fn default_true() -> bool {
    true
}

fn default_false() -> bool {
    false
}

impl Settings for AudioSettings {
    type FileContent = AudioSettingsContent;

    fn load(sources: SettingsSources<Self::FileContent>, _cx: &mut App) -> Result<Self> {
        sources.json_merge()
    }

    fn import_from_vscode(_vscode: &settings::VsCodeSettings, _current: &mut Self::FileContent) {}
}

/// See docs on [LIVE_SETTINGS]
pub(crate) struct LiveSettings {
    pub(crate) auto_microphone_volume: AtomicBool,
    pub(crate) auto_speaker_volume: AtomicBool,
    pub(crate) denoise: AtomicBool,
}

impl LiveSettings {
    pub(crate) fn initialize(&self, cx: &mut App) {
        cx.observe_global::<SettingsStore>(move |cx| {
            LIVE_SETTINGS.auto_microphone_volume.store(
                AudioSettings::get_global(cx).auto_microphone_volume,
                Ordering::Relaxed,
            );
            LIVE_SETTINGS.auto_speaker_volume.store(
                AudioSettings::get_global(cx).auto_speaker_volume,
                Ordering::Relaxed,
            );
            LIVE_SETTINGS
                .denoise
                .store(AudioSettings::get_global(cx).denoise, Ordering::Relaxed);
        })
        .detach();

        let init_settings = AudioSettings::get_global(cx);
        LIVE_SETTINGS
            .auto_microphone_volume
            .store(init_settings.auto_microphone_volume, Ordering::Relaxed);
        LIVE_SETTINGS
            .auto_speaker_volume
            .store(init_settings.auto_speaker_volume, Ordering::Relaxed);
        LIVE_SETTINGS
            .denoise
            .store(init_settings.denoise, Ordering::Relaxed);
    }
}

/// Allows access to settings from the audio thread. Updated by
/// observer of SettingsStore. Needed because audio playback and recording are
/// real time and must each run in a dedicated OS thread, therefore we can not
/// use the background executor.
pub(crate) static LIVE_SETTINGS: LiveSettings = LiveSettings {
    auto_microphone_volume: AtomicBool::new(true),
    auto_speaker_volume: AtomicBool::new(true),
    denoise: AtomicBool::new(true),
};