Function decodeMessage

client/src/protocol/encoder.ts:35–89

(data: Uint8Array)

};

export const decodeMessage = (data: Uint8Array): WSMessage => {
  const type = data[0];
  const payload = data.slice(1);
  switch (type) {
    case 0x00: {
      return {
        type: "handshake",
        version: 0,
        model: 0,
      };
    }
    case 0x01:
      return {
        type: "audio",
        data: payload,
      };
    case 0x02:
      return {
        type: "text",
        data: new TextDecoder().decode(payload),
      };
    case 0x03: {
      const action = Object.keys(CONTROL_MESSAGES_MAP).find(
        key => CONTROL_MESSAGES_MAP[key as CONTROL_MESSAGE] === payload[0],
      ) as CONTROL_MESSAGE | undefined;

      //TODO: log this and don't throw
      if (!action) {
        throw new Error("Unknown control message");
      }
      return {
        type: "control",
        action,
      };
    }
    case 0x04:
      return {
        type: "metadata",
        data: JSON.parse(new TextDecoder().decode(payload)),
      }
    case 0x05:
      return {
        type: "error",
        data: new TextDecoder().decode(payload),
      }
    case 0x06:
      return {
        type: "ping",
      }
    default: {
      console.log(type);
      throw new Error("Unknown message type");
    }
  }
};