import {
  ObligationCollateralLayout,
  ObligationLayout,
  ObligationLiquidityLayout,
  PortProfileCollateralData,
  PortProfileData,
  PortProfileLoanData,
  ProtoObligation,
} from "../structs";
import * as BufferLayout from "@solana/buffer-layout";

export const PortProfileParser = (buffer: Buffer): PortProfileData => {
  const {
    version,
    lastUpdate,
    lendingMarket,
    owner,
    depositedValue,
    borrowedValue,
    allowedBorrowValue,
    unhealthyBorrowValue,
    depositsLen,
    borrowsLen,
    dataFlat,
  } = ObligationLayout.decode(buffer) as ProtoObligation;

  const depositsBuffer = dataFlat.slice(
    0,
    depositsLen * ObligationCollateralLayout.span
  );
  const deposits = BufferLayout.seq(
    ObligationCollateralLayout,
    depositsLen
  ).decode(depositsBuffer) as PortProfileCollateralData[];

  const borrowsBuffer = dataFlat.slice(
    depositsBuffer.length,
    depositsBuffer.length + borrowsLen * ObligationLiquidityLayout.span
  );
  const borrows = BufferLayout.seq(
    ObligationLiquidityLayout,
    borrowsLen
  ).decode(borrowsBuffer) as PortProfileLoanData[];

  return {
    version,
    lastUpdate,
    lendingMarket,
    owner,
    depositedValue,
    borrowedValue,
    allowedBorrowValue,
    unhealthyBorrowValue,
    deposits,
    borrows,
  } as PortProfileData;
};