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import { MessageType } from '../MessageType';
import { IDlcMessage } from './DlcMessage';
import {
IOrderNegotiationFieldsV0JSON,
IOrderNegotiationFieldsV1JSON,
OrderNegotiationFields,
} from './OrderNegotiationFields';
/**
* OrderAccept contains information about a node and indicates its
* acceptance of the new order offer. This is the second step towards
* order negotiation.
*/
export class OrderAccept implements IDlcMessage {
public static type = MessageType.OrderAccept;
/**
* Creates an OrderAccept from JSON data
* @param json JSON object representing an order accept
*/
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any
public static fromJSON(json: any): OrderAccept {
const instance = new OrderAccept();
instance.tempOrderId = Buffer.from(
json.tempOrderId || json.temp_order_id,
'hex',
);
// Handle OrderNegotiationFields - optional field
if (json.negotiationFields || json.negotiation_fields) {
instance.negotiationFields =
json.negotiationFields || json.negotiation_fields;
}
return instance;
}
/**
* Deserializes an order_accept message
* @param buf
*/
public static deserialize(buf: Buffer): OrderAccept {
const instance = new OrderAccept();
const reader = new BufferReader(buf);
const type = reader.readUInt16BE(); // read type
// Validate type matches expected OrderAccept type
Iif (type !== MessageType.OrderAccept) {
throw new Error(
`Invalid message type. Expected ${MessageType.OrderAccept}, got ${type}`,
);
}
instance.tempOrderId = reader.readBytes(32);
// Check if negotiation_fields is present
const hasNegotiationFields = reader.readUInt8();
Eif (hasNegotiationFields === 0x01) {
// Read the remaining bytes as negotiationFields (not TLV format)
const remainingLength = buf.length - reader.position;
const remainingBytes = reader.readBytes(remainingLength);
instance.negotiationFields = OrderNegotiationFields.deserialize(
remainingBytes,
);
}
return instance;
}
/**
* The type for order_accept message. order_accept = 62772
*/
public type = OrderAccept.type;
public tempOrderId: Buffer;
public negotiationFields?: OrderNegotiationFields;
/**
* Converts order_accept to JSON
*/
public toJSON(): IOrderAcceptJSON {
return {
type: this.type,
tempOrderId: this.tempOrderId.toString('hex'),
negotiationFields: this.negotiationFields?.toJSON(),
};
}
/**
* Serializes the order_accept message into a Buffer
*/
public serialize(): Buffer {
const writer = new BufferWriter();
writer.writeUInt16BE(this.type);
writer.writeBytes(this.tempOrderId);
// negotiation_fields is optional
Eif (this.negotiationFields) {
writer.writeUInt8(0x01); // present
writer.writeBytes(this.negotiationFields.serialize());
} else {
writer.writeUInt8(0x00); // absent
}
return writer.toBuffer();
}
}
export interface IOrderAcceptJSON {
type: number;
tempOrderId: string;
negotiationFields?: // Now optional
IOrderNegotiationFieldsV0JSON | IOrderNegotiationFieldsV1JSON;
}
export class OrderAcceptContainer {
private accepts: OrderAccept[] = [];
/**
* Adds an OrderAccept to the container.
* @param accept The OrderAccept to add.
*/
public addAccept(accept: OrderAccept): void {
this.accepts.push(accept);
}
/**
* Returns all OrderAccepts in the container.
* @returns An array of OrderAccept instances.
*/
public getAccepts(): OrderAccept[] {
return this.accepts;
}
/**
* Serializes all OrderAccepts in the container to a Buffer.
* @returns A Buffer containing the serialized OrderAccepts.
*/
public serialize(): Buffer {
const writer = new BufferWriter();
// Write the number of accepts in the container first.
writer.writeBigSize(this.accepts.length);
// Serialize each accept and write it.
this.accepts.forEach((accept) => {
const serializedAccept = accept.serialize();
writer.writeBigSize(serializedAccept.length);
writer.writeBytes(serializedAccept);
});
return writer.toBuffer();
}
/**
* Deserializes a Buffer into an OrderAcceptContainer with OrderAccepts.
* @param buf The Buffer to deserialize.
* @returns An OrderAcceptContainer instance.
*/
public static deserialize(buf: Buffer): OrderAcceptContainer {
const reader = new BufferReader(buf);
const container = new OrderAcceptContainer();
const acceptsCount = reader.readBigSize();
for (let i = 0; i < acceptsCount; i++) {
const acceptLength = reader.readBigSize();
const acceptBuf = reader.readBytes(Number(acceptLength));
const accept = OrderAccept.deserialize(acceptBuf);
container.addAccept(accept);
}
return container;
}
}
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