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NftId.js
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NftId.js
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/*-
*
* Hedera JavaScript SDK
*
* Copyright (C) 2020 - 2023 Hedera Hashgraph, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
import * as HashgraphProto from "@hashgraph/proto";
import TokenId from "../token/TokenId.js";
import Long from "long";
/**
* The ID for a crypto-currency token on Hedera.
*
* @augments {EntityId<HashgraphProto.proto.INftID>}
*/
export default class NftId {
/**
* @param {TokenId} token
* @param {number | Long} serial
*/
constructor(token, serial) {
this.tokenId = token;
this.serial =
typeof serial === "number" ? Long.fromNumber(serial) : serial;
Object.freeze(this);
}
/**
* @param {string} text
* @returns {NftId}
*/
static fromString(text) {
const strings =
text.split("/").length > 1 ? text.split("/") : text.split("@");
for (const string of strings) {
if (string === "") {
throw new Error(
"invalid format for NftId: use [token]/[serial] or [token]@[serial]"
);
}
}
const token = TokenId.fromString(strings[0]);
const serial = Long.fromString(strings[1]);
return new NftId(token, serial);
}
/**
* @internal
* @param {HashgraphProto.proto.INftID} id
* @returns {NftId}
*/
static _fromProtobuf(id) {
return new NftId(
TokenId._fromProtobuf(
/** @type {HashgraphProto.proto.ITokenID} */ (id.tokenID)
),
id.serialNumber != null ? id.serialNumber : Long.ZERO
);
}
/**
* @param {Uint8Array} bytes
* @returns {NftId}
*/
static fromBytes(bytes) {
return NftId._fromProtobuf(HashgraphProto.proto.NftID.decode(bytes));
}
/**
* @internal
* @returns {HashgraphProto.proto.INftID}
*/
_toProtobuf() {
return {
tokenID: this.tokenId._toProtobuf(),
serialNumber: Long.fromValue(
this.serial !== undefined ? this.serial : 0
),
};
}
/**
* @returns {string}
*/
toString() {
return `${this.tokenId.toString()}/${this.serial.toString()}`;
}
/**
* @returns {Uint8Array}
*/
toBytes() {
return HashgraphProto.proto.NftID.encode(this._toProtobuf()).finish();
}
}