declare module "teaclient_connection" {
    export enum ServerType {
        UNKNOWN,
        TEASPEAK,
        TEAMSPEAK
    }

    export enum PlayerState {
        BUFFERING,
        PLAYING,
        STOPPING,
        STOPPED
    }

    export interface NativeVoiceClient {
        client_id: number;

        callback_playback: () => any;
        callback_stopped: () => any;

        callback_state_changed: (new_state: PlayerState) => any;

        get_state() : PlayerState;

        get_volume() : number;
        set_volume(volume: number) : void;

        abort_replay();
        get_stream() : audio.playback.AudioOutputStream;
    }

    export interface NativeVoiceConnection {
        register_client(client_id: number) : NativeVoiceClient;
        available_clients() : NativeVoiceClient[];
        unregister_client(client_id: number);

        audio_source() : audio.record.AudioConsumer;
        set_audio_source(consumer: audio.record.AudioConsumer | undefined);

        decoding_supported(codec: number) : boolean;
        encoding_supported(codec: number) : boolean;

        get_encoder_codec() : number;
        set_encoder_codec(codec: number);

        /* could may throw an exception when the underlying voice sender has been deallocated */
        enable_voice_send(flag: boolean);
    }

    export interface NativeServerConnection {
        callback_voice_data: (buffer: Uint8Array, client_id: number, codec_id: number, flag_head: boolean, packet_id: number) => any;
        callback_command: (command: string, arguments: any, switches: string[]) => any;
        callback_disconnect: (reason?: string) => any;
        _voice_connection: NativeVoiceConnection;
        server_type: ServerType;

        connected(): boolean;

        connect(properties: {
            remote_host: string,
            remote_port: number,

            timeout: number,

            callback: (error: number) => any,

            identity_key: string | undefined, /* if identity_key empty, then an ephemeral license will be created */
            teamspeak: boolean
        });

        disconnect(reason: string | undefined, callback: (error: number) => any) : boolean;

        error_message(id: number) : string;

        send_command(command: string, arguments: any[], switches: string[]);
        send_voice_data(buffer: Uint8Array, codec_id: number, header: boolean);
        send_voice_data_raw(buffer: Float32Array, channels: number, sample_rate: number, header: boolean);

        /* ping in microseconds */
        current_ping() : number;
    }

    export function spawn_server_connection() : NativeServerConnection;
    export function destroy_server_connection(connection: NativeServerConnection);


    export namespace ft {
        export interface TransferObject {
            name: string;
            direction: "upload" | "download";
        }

        export interface FileTransferSource extends TransferObject {
            total_size: number;
        }

        export interface FileTransferTarget extends TransferObject  {
            expected_size: number;
        }

        export interface NativeFileTransfer {
            handle: TransferObject;

            callback_finished: (aborted?: boolean) => any;
            callback_start: () => any;
            callback_progress: (current: number, max: number) => any;
            callback_failed: (message: string) => any;

            start();
        }

        export interface TransferOptions {
            remote_address: string;
            remote_port: number;

            transfer_key: string;
            client_transfer_id: number;
            server_transfer_id: number;

            object: TransferObject;
        }

        export function upload_transfer_object_from_file(path: string, name: string) : FileTransferSource;
        export function upload_transfer_object_from_buffer(buffer: ArrayBuffer) : FileTransferSource;
        export function download_transfer_object_from_buffer(target_buffer: ArrayBuffer) : TransferObject;

        export function destroy_connection(connection: NativeFileTransfer);
        export function spawn_connection(transfer: TransferOptions) : NativeFileTransfer;
    }

    export namespace audio {
        export interface AudioDevice {
            name: string;
            driver: string;

            device_id: string;

            input_supported: boolean;
            output_supported: boolean;

            input_default: boolean;
            output_default: boolean;

            device_index: number;
        }

        export namespace playback {
            export interface AudioOutputStream {
                sample_rate: number;
                channels: number;

                get_buffer_latency() : number;
                set_buffer_latency(value: number);

                get_buffer_max_latency() : number;
                set_buffer_max_latency(value: number);
            }

            export interface OwnedAudioOutputStream extends AudioOutputStream {
                callback_underflow: () => any;
                callback_overflow: () => any;

                clear();
                write_data(buffer: ArrayBuffer, interleaved: boolean);
                write_data_rated(buffer: ArrayBuffer, interleaved: boolean, sample_rate: number);

                deleted() : boolean;
                delete();
            }

            export function set_device(device: number);
            export function current_device() : number;

            export function create_stream() : OwnedAudioOutputStream;

            export function get_master_volume() : number;
            export function set_master_volume(volume: number);
        }

        export namespace record {
            export interface ConsumeFilter {
                get_name() : string;
            }

            export interface MarginedFilter {
                get_margin_frames() : number;
                set_margin_frames(value: number);
            }

            export interface VADConsumeFilter extends ConsumeFilter, MarginedFilter {
                get_level() : number;
            }

            export interface ThresholdConsumeFilter extends ConsumeFilter, MarginedFilter {
                get_threshold() : number;
                set_threshold(value: number);

                get_attack_smooth() : number;
                set_attack_smooth(value: number);

                get_release_smooth() : number;
                set_release_smooth(value: number);

                set_analyze_filter(callback: (value: number) => any);
            }

            export interface StateConsumeFilter extends ConsumeFilter {
                is_consuming() : boolean;
                set_consuming(flag: boolean);
            }

            export interface AudioConsumer {
                sample_rate: number;
                channels: number;
                frame_size: number;

                /* TODO add some kind of order to may improve CPU performance (Some filters are more intense then others) */
                get_filters() : ConsumeFilter[];
                unregister_filter(filter: ConsumeFilter);

                create_filter_vad(level: number) : VADConsumeFilter;
                create_filter_threshold(threshold: number) : ThresholdConsumeFilter;
                create_filter_state() : StateConsumeFilter;

                callback_data: (buffer: Float32Array) => any;
                callback_ended: () => any;
                callback_started: () => any;
            }

            export interface AudioRecorder {
                get_device() : number;
                set_device(device: number, callback: (flag: boolean | string) => void); /* Recorder needs to be started afterwards */

                start(callback: (flag: boolean) => void);
                started() : boolean;
                stop();

                get_volume() : number;
                set_volume(volume: number);

                create_consumer() : AudioConsumer;
                get_consumers() : AudioConsumer[];
                delete_consumer(consumer: AudioConsumer);
            }

            export function create_recorder() : AudioRecorder;
        }

        export function initialize();
        export function available_devices() : AudioDevice[];
    }
}