import BN from "bn.js";
import { Cell } from "../boc/cell";
import { Address } from "../utils/address";
import { CommonMessageInfo } from "./commonMessageInfo";
import { Message } from "./message";

export class InternalMessage implements Message {
  readonly from: Address | null;
  readonly to: Address;
  readonly value: BN;
  readonly ihrDisabled: boolean;
  readonly bounce: boolean;
  readonly bounced: boolean;
  readonly ihrFees: BN;
  readonly fwdFees: BN;
  readonly createdAt: BN;
  readonly createdLt: BN;
  readonly body: CommonMessageInfo;

  constructor(opts: {
    to: Address;
    value: number | BN;
    bounce: boolean;
    ihrFees?: number | BN;
    fwdFees?: number | BN;
    createdLt?: number | BN;
    createdAt?: number;
    ihrDisabled?: boolean;
    bounced?: boolean;
    from?: Address;
    body: CommonMessageInfo;
  }) {
    this.to = opts.to;
    this.value = new BN(opts.value);
    this.bounce = opts.bounce;
    this.body = opts.body;
    if (opts.from) {
      this.from = opts.from;
    } else {
      this.from = null;
    }
    if (opts.ihrDisabled !== null && opts.ihrDisabled !== undefined) {
      this.ihrDisabled = opts.ihrDisabled;
    } else {
      this.ihrDisabled = true;
    }
    if (opts.bounced !== null && opts.bounced !== undefined) {
      this.bounced = opts.bounced;
    } else {
      this.bounced = false;
    }
    if (opts.ihrFees !== null && opts.ihrFees !== undefined) {
      this.ihrFees = new BN(opts.ihrFees);
    } else {
      this.ihrFees = new BN(0);
    }
    if (opts.fwdFees !== null && opts.fwdFees !== undefined) {
      this.fwdFees = new BN(opts.fwdFees);
    } else {
      this.fwdFees = new BN(0);
    }
    if (opts.createdAt !== null && opts.createdAt !== undefined) {
      this.createdAt = new BN(opts.createdAt);
    } else {
      this.createdAt = new BN(0);
    }
    if (opts.createdLt !== null && opts.createdLt !== undefined) {
      this.createdLt = new BN(opts.createdLt);
    } else {
      this.createdLt = new BN(0);
    }
  }

  writeTo(cell: Cell) {
    cell.bits.writeBit(0); // Message id
    cell.bits.writeBit(this.ihrDisabled);
    cell.bits.writeBit(this.bounce);
    cell.bits.writeBit(this.bounced);
    cell.bits.writeAddress(this.from);
    cell.bits.writeAddress(this.to);
    cell.bits.writeCoins(this.value);
    cell.bits.writeBit(false); // Currency collection (not supported)
    cell.bits.writeCoins(this.ihrFees);
    cell.bits.writeCoins(this.fwdFees);
    cell.bits.writeUint(this.createdLt, 64);
    cell.bits.writeUint(this.createdAt, 32);
    this.body.writeTo(cell);
  }
}