import { OperationResponse, Unregisterable } from '../shared';

/**
 * Represents various functions related to Steam system audio.
 */
export interface Audio {
	/**
	 * Clears the default device override for a specified audio type.
	 * @param audioType The audio type (0 for input, 1 for output).
	 */
	ClearDefaultDeviceOverride(audioType: number): Promise<OperationResponse>;

	/**
	 * Retrieves information about audio applications.
	 * @returns information about audio applications.
	 */
	GetApps(): Promise<ApplicationsAudio>;

	/**
	 * Retrieves information about audio devices.
	 * @returns information about audio devices.
	 */
	GetDevices(): Promise<AudioDeviceInfo>;

	/**
	 * Registers a callback to be called when a new audio application is added.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForAppAdded(callback: (app: ApplicationAudio) => void): Unregisterable;

	/**
	 * Registers a callback to be called when an audio application is removed.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForAppRemoved(callback: (appAudioId: number) => void): Unregisterable;

	/**
	 * Registers a callback to be called when the volume of an audio application changes.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForAppVolumeChanged(callback: (appAudioId: number, volume: number) => void): Unregisterable;

	/**
	 * Registers a callback to be called when a new audio device is added.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForDeviceAdded(callback: (device: AudioDevice) => void): Unregisterable;

	/**
	 * Registers a callback to be called when an audio device is removed.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForDeviceRemoved(callback: (audioDeviceId: number) => void): Unregisterable;

	/**
	 * Registers a callback to be called when the volume of an audio device changes.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForDeviceVolumeChanged(callback: (audioDeviceId: number, audioType: number, volume: number) => void): Unregisterable;

	RegisterForServiceConnectionStateChanges(callback: (param0: any) => void): Unregisterable;

	/**
	 * Registers a callback to be called when volume buttons are pressed.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForVolumeButtonPressed(callback: (volumeUpPressed: boolean) => void): Unregisterable;

	/**
	 * Sets the volume of an audio application.
	 * @param appAudioId The ID of the audio application.
	 * @param volume The volume level (floating point value between 0 and 1).
	 */
	SetAppVolume(appAudioId: number, volume: number): Promise<OperationResponse>;

	/**
	 * Sets the default device override for a specified audio type.
	 * @param audioDeviceId The ID of the audio device.
	 * @param audioType The audio type (0 for input, 1 for output).
	 */
	SetDefaultDeviceOverride(audioDeviceId: number, audioType: number): Promise<OperationResponse>;

	/**
	 * Sets the volume of an audio device.
	 * @param audioDeviceId The ID of the audio device.
	 * @param audioType The audio type (0 for input, 1 for output).
	 * @param volume The volume level (floating point value between 0 and 1).
	 */
	SetDeviceVolume(audioDeviceId: number, audioType: number, volume: number): Promise<OperationResponse>;
}

/**
 * Represents details about an array of application audio sessions.
 */
export interface ApplicationsAudio {
	/**
	 * An array of application audio sessions.
	 */
	apps: ApplicationAudio[];
}

/**
 * Represents details about an application audio session.
 */
export interface ApplicationAudio {
	/**
	 * The ID of the application audio.
	 */
	id: number;

	/**
	 * The name of the application (e.g., Spotify, YouTube from a browser, etc.).
	 */
	strName: string;

	/**
	 * The volume level of the application (floating point value between 0 and 1).
	 */
	flVolume: number;
}

/**
 * Represents details about audio devices and information about the active audio device.
 */
export interface AudioDeviceInfo {
	/**
	 * The ID of the active output audio device.
	 */
	activeOutputDeviceId: number;

	/**
	 * The ID of the active input audio device.
	 */
	activeInputDeviceId: number;

	/**
	 * The ID of the overridden output audio device (-1 if not overridden).
	 */
	overrideOutputDeviceId: number;

	/**
	 * The ID of the overridden input audio device (-1 if not overridden).
	 */
	overrideInputDeviceId: number;

	/**
	 * An array of audio devices.
	 */
	vecDevices: AudioDevice[];
}

/**
 * Represents details about an audio device.
 */
export interface AudioDevice {
	/**
	 * The identifier of the audio device.
	 */
	id: number;

	/**
	 * The name of the audio device.
	 */
	sName: string;

	/**
	 * Indicates if the device has audio output.
	 */
	bHasOutput: boolean;

	/**
	 * Indicates if the device is the default output device.
	 */
	bIsDefaultOutputDevice: boolean;

	/**
	 * The volume level of the audio output device (floating point value between 0 and 1).
	 */
	flOutputVolume: number;

	/**
	 * Indicates if the device has audio input.
	 */
	bHasInput: boolean;

	/**
	 * Indicates if the device is the default input device.
	 */
	bIsDefaultInputDevice: boolean;

	/**
	 * The volume level of the audio input device (floating point value between 0 and 1).
	 */
	flInputVolume: number;
}