@kamino-finance/klend-sdk/src/pyth/types/PriceFeedMessage.ts

Typescript SDK for interacting with the Kamino Lending (klend) protocol

import BN from 'bn.js';
import * as borsh from '@coral-xyz/borsh';

export interface PriceFeedMessageFields {
  feedId: number[];
  price: BN;
  conf: BN;
  exponent: number;
  publishTime: BN;
  prevPublishTime: BN;
  emaPrice: BN;
  emaConf: BN;
}

export interface PriceFeedMessageJSON {
  feedId: number[];
  price: string;
  conf: string;
  exponent: number;
  publishTime: string;
  prevPublishTime: string;
  emaPrice: string;
  emaConf: string;
}

/** Reserve Withdrawal Caps State */
export class PriceFeedMessage {
  readonly feedId: number[];
  readonly price: BN;
  readonly conf: BN;
  readonly exponent: number;
  readonly publishTime: BN;
  readonly prevPublishTime: BN;
  readonly emaPrice: BN;
  readonly emaConf: BN;

  constructor(fields: PriceFeedMessageFields) {
    this.feedId = fields.feedId;
    this.price = fields.price;
    this.conf = fields.conf;
    this.exponent = fields.exponent;
    this.publishTime = fields.publishTime;
    this.prevPublishTime = fields.prevPublishTime;
    this.emaPrice = fields.emaPrice;
    this.emaConf = fields.emaConf;
  }

  static layout(property?: string) {
    return borsh.struct(
      [
        borsh.array(borsh.u8(), 32, 'feedId'),
        borsh.i64('price'),
        borsh.u64('conf'),
        borsh.i32('exponent'),
        borsh.i64('publishTime'),
        borsh.i64('prevPublishTime'),
        borsh.i64('emaPrice'),
        borsh.u64('emaConf'),
      ],
      property
    );
  }

  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  static fromDecoded(obj: any) {
    return new PriceFeedMessage({
      feedId: obj.feedId,
      price: obj.price,
      conf: obj.conf,
      exponent: obj.exponent,
      publishTime: obj.publishTime,
      prevPublishTime: obj.prevPublishTime,
      emaPrice: obj.emaPrice,
      emaConf: obj.emaConf,
    });
  }

  static toEncodable(fields: PriceFeedMessageFields) {
    return {
      feedId: fields.feedId,
      price: fields.price,
      conf: fields.conf,
      exponent: fields.exponent,
      publishTime: fields.publishTime,
      prevPublishTime: fields.prevPublishTime,
      emaPrice: fields.emaPrice,
      emaConf: fields.emaConf,
    };
  }

  toJSON(): PriceFeedMessageJSON {
    return {
      feedId: this.feedId,
      price: this.price.toString(),
      conf: this.conf.toString(),
      exponent: this.exponent,
      publishTime: this.publishTime.toString(),
      prevPublishTime: this.prevPublishTime.toString(),
      emaPrice: this.emaPrice.toString(),
      emaConf: this.emaConf.toString(),
    };
  }

  static fromJSON(obj: PriceFeedMessageJSON): PriceFeedMessage {
    return new PriceFeedMessage({
      feedId: obj.feedId,
      price: new BN(obj.price),
      conf: new BN(obj.conf),
      exponent: obj.exponent,
      publishTime: new BN(obj.publishTime),
      prevPublishTime: new BN(obj.prevPublishTime),
      emaPrice: new BN(obj.emaPrice),
      emaConf: new BN(obj.emaConf),
    });
  }

  toEncodable() {
    return PriceFeedMessage.toEncodable(this);
  }
}