1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
import { generatePseudoRandomSalt } from '@0xproject/order-utils';
import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import { DummyERC721TokenContract } from '../../generated_contract_wrappers/dummy_erc721_token';
import { ERC721ProxyContract } from '../../generated_contract_wrappers/erc721_proxy';
import { artifacts } from './artifacts';
import { constants } from './constants';
import { ERC721TokenIdsByOwner } from './types';
import { txDefaults } from './web3_wrapper';
export class ERC721Wrapper {
private readonly _tokenOwnerAddresses: string[];
private readonly _contractOwnerAddress: string;
private readonly _web3Wrapper: Web3Wrapper;
private readonly _provider: Provider;
private readonly _dummyTokenContracts: DummyERC721TokenContract[];
private _proxyContract?: ERC721ProxyContract;
private _proxyIdIfExists?: string;
private _initialTokenIdsByOwner: ERC721TokenIdsByOwner = {};
constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
this._web3Wrapper = new Web3Wrapper(provider);
this._provider = provider;
this._dummyTokenContracts = [];
this._tokenOwnerAddresses = tokenOwnerAddresses;
this._contractOwnerAddress = contractOwnerAddress;
}
public async deployDummyTokensAsync(): Promise<DummyERC721TokenContract[]> {
for (let i = 0; i < constants.NUM_DUMMY_ERC721_TO_DEPLOY; i++) {
this._dummyTokenContracts.push(
await DummyERC721TokenContract.deployFrom0xArtifactAsync(
artifacts.DummyERC721Token,
this._provider,
txDefaults,
constants.DUMMY_TOKEN_NAME,
constants.DUMMY_TOKEN_SYMBOL,
),
);
}
return this._dummyTokenContracts;
}
public async deployProxyAsync(): Promise<ERC721ProxyContract> {
this._proxyContract = await ERC721ProxyContract.deployFrom0xArtifactAsync(
artifacts.ERC721Proxy,
this._provider,
txDefaults,
);
this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
return this._proxyContract;
}
public getProxyId(): string {
this._validateProxyContractExistsOrThrow();
return this._proxyIdIfExists as string;
}
public async setBalancesAndAllowancesAsync(): Promise<void> {
this._validateDummyTokenContractsExistOrThrow();
this._validateProxyContractExistsOrThrow();
this._initialTokenIdsByOwner = {};
for (const dummyTokenContract of this._dummyTokenContracts) {
for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
for (let i = 0; i < constants.NUM_ERC721_TOKENS_TO_MINT; i++) {
const tokenId = generatePseudoRandomSalt();
await this.mintAsync(dummyTokenContract.address, tokenId, tokenOwnerAddress);
if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress])) {
this._initialTokenIdsByOwner[tokenOwnerAddress] = {
[dummyTokenContract.address]: [],
};
}
if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address])) {
this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address] = [];
}
this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address].push(tokenId);
await this.approveProxyAsync(dummyTokenContract.address, tokenId);
}
}
}
}
public async doesTokenExistAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const owner = await tokenContract.ownerOf.callAsync(tokenId);
const doesExist = owner !== constants.NULL_ADDRESS;
return doesExist;
}
public async approveProxyAsync(tokenAddress: string, tokenId: BigNumber): Promise<void> {
const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
await this.approveAsync(proxyAddress, tokenAddress, tokenId);
}
public async approveProxyForAllAsync(tokenAddress: string, tokenId: BigNumber, isApproved: boolean): Promise<void> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const tokenOwner = await this.ownerOfAsync(tokenAddress, tokenId);
const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
await this._web3Wrapper.awaitTransactionSuccessAsync(
await tokenContract.setApprovalForAll.sendTransactionAsync(proxyAddress, isApproved, {
from: tokenOwner,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
}
public async approveAsync(to: string, tokenAddress: string, tokenId: BigNumber): Promise<void> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const tokenOwner = await this.ownerOfAsync(tokenAddress, tokenId);
await this._web3Wrapper.awaitTransactionSuccessAsync(
await tokenContract.approve.sendTransactionAsync(to, tokenId, {
from: tokenOwner,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
}
public async transferFromAsync(
tokenAddress: string,
tokenId: BigNumber,
currentOwner: string,
userAddress: string,
): Promise<void> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
await this._web3Wrapper.awaitTransactionSuccessAsync(
await tokenContract.transferFrom.sendTransactionAsync(currentOwner, userAddress, tokenId, {
from: currentOwner,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
}
public async mintAsync(tokenAddress: string, tokenId: BigNumber, userAddress: string): Promise<void> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
await this._web3Wrapper.awaitTransactionSuccessAsync(
await tokenContract.mint.sendTransactionAsync(userAddress, tokenId, {
from: this._contractOwnerAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
}
public async burnAsync(tokenAddress: string, tokenId: BigNumber, owner: string): Promise<void> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
await this._web3Wrapper.awaitTransactionSuccessAsync(
await tokenContract.burn.sendTransactionAsync(owner, tokenId, {
from: this._contractOwnerAddress,
}),
constants.AWAIT_TRANSACTION_MINED_MS,
);
}
public async ownerOfAsync(tokenAddress: string, tokenId: BigNumber): Promise<string> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const owner = await tokenContract.ownerOf.callAsync(tokenId);
return owner;
}
public async isOwnerAsync(userAddress: string, tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const tokenOwner = await tokenContract.ownerOf.callAsync(tokenId);
const isOwner = tokenOwner === userAddress;
return isOwner;
}
public async isProxyApprovedForAllAsync(userAddress: string, tokenAddress: string): Promise<boolean> {
this._validateProxyContractExistsOrThrow();
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const operator = (this._proxyContract as ERC721ProxyContract).address;
const didApproveAll = await tokenContract.isApprovedForAll.callAsync(userAddress, operator);
return didApproveAll;
}
public async isProxyApprovedAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
this._validateProxyContractExistsOrThrow();
const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
const approvedAddress = await tokenContract.getApproved.callAsync(tokenId);
const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
const isProxyAnApprovedOperator = approvedAddress === proxyAddress;
return isProxyAnApprovedOperator;
}
public async getBalancesAsync(): Promise<ERC721TokenIdsByOwner> {
this._validateDummyTokenContractsExistOrThrow();
this._validateBalancesAndAllowancesSetOrThrow();
const tokenIdsByOwner: ERC721TokenIdsByOwner = {};
const tokenOwnerAddresses: string[] = [];
const tokenInfo: Array<{ tokenId: BigNumber; tokenAddress: string }> = [];
for (const dummyTokenContract of this._dummyTokenContracts) {
for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
const initialTokenOwnerIds = this._initialTokenIdsByOwner[tokenOwnerAddress][
dummyTokenContract.address
];
for (const tokenId of initialTokenOwnerIds) {
tokenOwnerAddresses.push(await dummyTokenContract.ownerOf.callAsync(tokenId));
tokenInfo.push({
tokenId,
tokenAddress: dummyTokenContract.address,
});
}
}
}
_.forEach(tokenOwnerAddresses, (tokenOwnerAddress, ownerIndex) => {
const tokenAddress = tokenInfo[ownerIndex].tokenAddress;
const tokenId = tokenInfo[ownerIndex].tokenId;
if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress])) {
tokenIdsByOwner[tokenOwnerAddress] = {
[tokenAddress]: [],
};
}
if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress][tokenAddress])) {
tokenIdsByOwner[tokenOwnerAddress][tokenAddress] = [];
}
tokenIdsByOwner[tokenOwnerAddress][tokenAddress].push(tokenId);
});
return tokenIdsByOwner;
}
public getTokenOwnerAddresses(): string[] {
return this._tokenOwnerAddresses;
}
public getTokenAddresses(): string[] {
const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address);
return tokenAddresses;
}
private _getTokenContractFromAssetData(tokenAddress: string): DummyERC721TokenContract {
const tokenContractIfExists = _.find(this._dummyTokenContracts, c => c.address === tokenAddress);
if (_.isUndefined(tokenContractIfExists)) {
throw new Error(`Token: ${tokenAddress} was not deployed through ERC20Wrapper`);
}
return tokenContractIfExists;
}
private _validateDummyTokenContractsExistOrThrow(): void {
if (_.isUndefined(this._dummyTokenContracts)) {
throw new Error('Dummy ERC721 tokens not yet deployed, please call "deployDummyTokensAsync"');
}
}
private _validateProxyContractExistsOrThrow(): void {
if (_.isUndefined(this._proxyContract)) {
throw new Error('ERC721 proxy contract not yet deployed, please call "deployProxyAsync"');
}
}
private _validateBalancesAndAllowancesSetOrThrow(): void {
if (_.keys(this._initialTokenIdsByOwner).length === 0) {
throw new Error(
'Dummy ERC721 balances and allowances not yet set, please call "setBalancesAndAllowancesAsync"',
);
}
}
}
|
