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import { RoundingIntervals } from './RoundingIntervals';
import { IRoundingIntervalsJSON } from './RoundingIntervals';
/**
* Negotiation fields for DLC contract negotiation.
* Follows the Rust enum pattern with Single and Disjoint variants.
*/
export abstract class NegotiationFields {
public static deserialize(buf: Buffer): NegotiationFields {
const reader = new BufferReader(buf);
const discriminator = Number(reader.readBigSize());
switch (discriminator) {
case 0:
return SingleNegotiationFields.deserialize(buf);
case 1:
return DisjointNegotiationFields.deserialize(buf);
default:
throw new Error(
`Invalid NegotiationFields discriminator: ${discriminator}. Must be 0 (Single) or 1 (Disjoint)`,
);
}
}
/**
* Creates a NegotiationFields from JSON data
* @param json JSON object representing negotiation fields
*/
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any
public static fromJSON(json: any): NegotiationFields {
Iif (!json || typeof json !== 'object') {
throw new Error('Invalid JSON input for NegotiationFields');
}
const variant = json.variant;
switch (variant) {
case 'Single':
return SingleNegotiationFields.fromJSON(json);
case 'Disjoint':
return DisjointNegotiationFields.fromJSON(json);
default:
throw new Error(
`Unknown negotiation fields variant: ${variant}. Must be 'Single' or 'Disjoint'`,
);
}
}
public abstract variant: 'Single' | 'Disjoint';
public abstract discriminator: number;
public abstract serialize(): Buffer;
public abstract toJSON(): INegotiationFieldsJSON;
}
/**
* Negotiation fields for contract based on a single event.
*/
export class SingleNegotiationFields extends NegotiationFields {
/**
* Creates a SingleNegotiationFields from JSON data
* @param json JSON object representing single negotiation fields
*/
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any
public static fromJSON(json: any): SingleNegotiationFields {
const instance = new SingleNegotiationFields();
Iif (json.variant !== 'Single') {
throw new Error(
`Invalid variant for SingleNegotiationFields: expected 'Single', got ${json.variant}`,
);
}
Iif (!json.roundingIntervals) {
throw new Error(
'SingleNegotiationFields requires roundingIntervals field',
);
}
instance.roundingIntervals = RoundingIntervals.fromJSON(
json.roundingIntervals,
);
return instance;
}
/**
* Deserializes single negotiation fields
* @param buf
*/
public static deserialize(buf: Buffer): SingleNegotiationFields {
const instance = new SingleNegotiationFields();
const reader = new BufferReader(buf);
reader.readBigSize(); // read discriminator (0)
// Read remaining bytes as raw RoundingIntervals data
const remainingBytes = reader.readBytes();
instance.roundingIntervals = RoundingIntervals.deserialize(remainingBytes);
return instance;
}
public variant = 'Single' as const;
public discriminator = 0;
public roundingIntervals: RoundingIntervals;
/**
* Converts single negotiation fields to JSON
*/
public toJSON(): ISingleNegotiationFieldsJSON {
return {
variant: this.variant,
roundingIntervals: this.roundingIntervals.toJSON(),
};
}
/**
* Serializes the single negotiation fields into a Buffer
*/
public serialize(): Buffer {
const writer = new BufferWriter();
writer.writeBigSize(this.discriminator);
writer.writeBytes(this.roundingIntervals.serialize());
return writer.toBuffer();
}
}
/**
* Negotiation fields for contract based on multiple events.
*/
export class DisjointNegotiationFields extends NegotiationFields {
/**
* Creates a DisjointNegotiationFields from JSON data
* @param json JSON object representing disjoint negotiation fields
*/
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types, @typescript-eslint/no-explicit-any
public static fromJSON(json: any): DisjointNegotiationFields {
const instance = new DisjointNegotiationFields();
Iif (json.variant !== 'Disjoint') {
throw new Error(
`Invalid variant for DisjointNegotiationFields: expected 'Disjoint', got ${json.variant}`,
);
}
Iif (!json.negotiationFields || !Array.isArray(json.negotiationFields)) {
throw new Error(
'DisjointNegotiationFields requires negotiationFields array',
);
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
instance.negotiationFields = json.negotiationFields.map((fieldJson: any) =>
NegotiationFields.fromJSON(fieldJson),
);
return instance;
}
/**
* Deserializes disjoint negotiation fields
* @param buf
*/
public static deserialize(buf: Buffer): DisjointNegotiationFields {
const instance = new DisjointNegotiationFields();
const reader = new BufferReader(buf);
reader.readBigSize(); // read discriminator (1)
const numFields = Number(reader.readBigSize());
for (let i = 0; i < numFields; i++) {
// For simplicity, let's read the nested field by looking ahead
// to determine its length based on its discriminator
const startPos = reader.position;
const discriminator = Number(reader.readBigSize());
Eif (discriminator === 0) {
// Single field: discriminator + RoundingIntervals data
// RoundingIntervals has its own length, so we need to parse it
const roundingIntervals = RoundingIntervals.deserialize(
reader.readBytes(),
);
// Reset and read the complete field
reader.position = startPos;
const fieldLength = 1 + roundingIntervals.serialize().length; // discriminator + data length
const fieldData = reader.readBytes(fieldLength);
instance.negotiationFields.push(
NegotiationFields.deserialize(fieldData),
);
} else if (discriminator === 1) {
throw new Error('Nested disjoint fields not yet supported');
} else {
throw new Error(`Unknown discriminator: ${discriminator}`);
}
}
return instance;
}
public variant = 'Disjoint' as const;
public discriminator = 1;
public negotiationFields: NegotiationFields[] = [];
/**
* Converts disjoint negotiation fields to JSON
*/
public toJSON(): IDisjointNegotiationFieldsJSON {
return {
variant: this.variant,
negotiationFields: this.negotiationFields.map((field) => field.toJSON()),
};
}
/**
* Serializes the disjoint negotiation fields into a Buffer
*/
public serialize(): Buffer {
const writer = new BufferWriter();
writer.writeBigSize(this.discriminator);
writer.writeBigSize(this.negotiationFields.length);
for (const negotiationField of this.negotiationFields) {
writer.writeBytes(negotiationField.serialize());
}
return writer.toBuffer();
}
}
export type INegotiationFieldsJSON =
| ISingleNegotiationFieldsJSON
| IDisjointNegotiationFieldsJSON;
export interface ISingleNegotiationFieldsJSON {
variant: 'Single';
roundingIntervals: IRoundingIntervalsJSON;
}
export interface IDisjointNegotiationFieldsJSON {
variant: 'Disjoint';
negotiationFields: INegotiationFieldsJSON[];
}
// Legacy exports for backward compatibility - map to new structure
export const NegotiationFieldsV0 = SingleNegotiationFields; // V0 was empty, now maps to Single
export const NegotiationFieldsV1 = SingleNegotiationFields; // V1 had rounding intervals
export const NegotiationFieldsV2 = DisjointNegotiationFields; // V2 had list of fields
export type INegotiationFieldsV0JSON = ISingleNegotiationFieldsJSON;
export type INegotiationFieldsV1JSON = ISingleNegotiationFieldsJSON;
export type INegotiationFieldsV2JSON = IDisjointNegotiationFieldsJSON;
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