import {_connection} from "./ServerConnection";
import {_audio as _recorder} from "../audio/AudioRecorder";

import {
    NativeVoiceConnection,
    NativeVoiceClient
} from "teaclient_connection";

export namespace _audio {
    export namespace native {
        import ServerConnection = _connection.native.ServerConnection;

        export class VoiceConnection extends connection.voice.AbstractVoiceConnection {
            readonly connection: ServerConnection;
            readonly handle: NativeVoiceConnection;

            private _audio_source: RecorderProfile;

            constructor(connection: ServerConnection, voice: NativeVoiceConnection) {
                super(connection);
                this.connection = connection;
                this.handle = voice;
            }

            setup() { }

            async acquire_voice_recorder(recorder: RecorderProfile | undefined, enforce?: boolean) {
                if(this._audio_source === recorder && !enforce)
                    return;

                if(this._audio_source)
                    await this._audio_source.unmount();

                if(recorder) {
                    if(!(recorder.input instanceof _recorder.recorder.NativeInput))
                        throw "Recorder input must be an instance of NativeInput!";
                    await recorder.unmount();
                }

                this.handleVoiceEnded();
                this._audio_source = recorder;

                if(recorder) {
                    recorder.current_handler = this.connection.client;

                    recorder.callback_unmount = () => {
                        this._audio_source = undefined;
                        this.handle.set_audio_source(undefined);
                        this.connection.client.update_voice_status(undefined);
                    };

                    recorder.callback_start = this.on_voice_started.bind(this);
                    recorder.callback_stop = this.handleVoiceEnded.bind(this);

                    recorder.callback_support_change = () => {
                        this.connection.client.update_voice_status(undefined);
                    };

                    this.handle.set_audio_source((recorder.input as _recorder.recorder.NativeInput).consumer);
                }
                this.connection.client.update_voice_status(undefined);
            }

            voice_playback_support() : boolean {
                return this.connection.connected();
            }

            voice_send_support() : boolean {
                return this.connection.connected();
            }

            private current_channel_codec() : number {
                const chandler = this.connection.client;
                return (chandler.getClient().currentChannel() || {properties: { channel_codec: 4}}).properties.channel_codec;
            }

            private handleVoiceEnded() {
                const chandler = this.connection.client;
                chandler.getClient().speaking = false;

                if(!chandler.connected)
                    return false;

                if(chandler.client_status.input_muted)
                    return false;

                console.log(tr("Local voice ended"));
                //TODO
            }

            private on_voice_started() {
                const chandler = this.connection.client;
                if(chandler.client_status.input_muted) {
                    /* evil hack due to the settings :D */
                    log.warn(LogCategory.VOICE, tr("Received local voice started event, even thou we're muted! Do not send any voice."));
                    if(this.handle) {
                        this.handle.enable_voice_send(false);
                    }
                    return;
                }

                log.info(LogCategory.VOICE, tr("Local voice started"));
                this.handle.enable_voice_send(true);

                const ch = chandler.getClient();
                if(ch) ch.speaking = true;
            }

            connected(): boolean {
                return true; /* we cant be disconnected at any time! */
            }

            voice_recorder(): RecorderProfile {
                return this._audio_source;
            }

            available_clients(): connection.voice.VoiceClient[] {
                return this.handle.available_clients();
            }

            find_client(client_id: number) : connection.voice.VoiceClient | undefined {
                for(const client of this.available_clients())
                    if(client.client_id === client_id)
                        return client;
                return undefined;
            }

            unregister_client(client: connection.voice.VoiceClient): Promise<void> {
                this.handle.unregister_client(client.client_id);
                return Promise.resolve();
            }

            register_client(client_id: number): connection.voice.VoiceClient {
                const client = this.handle.register_client(client_id);
                if(!client)
                    return client;

                const stream = client.get_stream();
                stream.set_buffer_latency(0.02);
                stream.set_buffer_max_latency(0.2);
                return client;
            }

            decoding_supported(codec: number): boolean {
                return this.handle.decoding_supported(codec);
            }

            encoding_supported(codec: number): boolean {
                return this.handle.encoding_supported(codec);
            }

            get_encoder_codec(): number {
                return this.handle.get_encoder_codec();
            }

            set_encoder_codec(codec: number) {
                return this.handle.set_encoder_codec(codec);
            }
        }
    }
}