@nexex/api
Version:
support trade on nexex network
293 lines • 14.2 kB
JavaScript
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
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return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
var decorators = __importStar(require("@nexex/api/decorators"));
var ethers_1 = require("ethers");
var constants_1 = require("../constants");
var Amount_1 = require("../model/Amount");
var ERC20Contract_1 = require("./ERC20Contract");
var WrappedETH_1 = require("./WrappedETH");
var TokenHelper = /** @class */ (function () {
function TokenHelper(provider, network, gatewayAddr, wrappedEthAddr) {
this.network = network;
this.cache = {};
this.provider = provider;
this.gatewayAddr = gatewayAddr;
this.etherToken = new WrappedETH_1.WrappedETH(this.provider, this.network, wrappedEthAddr);
}
TokenHelper.prototype.wrapEth = function (signer, amount, opt) {
if (opt === void 0) { opt = {}; }
return this.etherToken.deposit(signer, amount, opt);
};
TokenHelper.prototype.unwrapEth = function (signer, amount, opt) {
if (opt === void 0) { opt = {}; }
return this.etherToken.withdraw(signer, amount, opt);
};
TokenHelper.prototype.approveGateway = function (signer, tokenAddr, opt) {
if (opt === void 0) { opt = {}; }
return __awaiter(this, void 0, void 0, function () {
var token;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
return [2 /*return*/, token.approve(signer, this.gatewayAddr, constants_1.constants.MAX_UINT_256, opt)];
}
});
});
};
TokenHelper.prototype.revokeGatewayApproval = function (signer, tokenAddr, opt) {
if (opt === void 0) { opt = {}; }
return __awaiter(this, void 0, void 0, function () {
var token;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
return [2 /*return*/, token.approve(signer, this.gatewayAddr, 0, opt)];
}
});
});
};
TokenHelper.prototype.getToken = function (addr) {
return __awaiter(this, void 0, void 0, function () {
var _a, name_1, decimals, symbol, _b, ethToken;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
if (!this.cache[addr]) return [3 /*break*/, 1];
return [2 /*return*/, this.cache[addr]];
case 1: return [4 /*yield*/, this.name(addr)];
case 2:
_b = [
_c.sent()
];
return [4 /*yield*/, this.decimals(addr)];
case 3:
_b = _b.concat([
_c.sent()
]);
return [4 /*yield*/, this.symbol(addr)];
case 4:
_a = _b.concat([
_c.sent()
]), name_1 = _a[0], decimals = _a[1], symbol = _a[2];
ethToken = new ERC20Contract_1.ERC20Contract({ name: name_1, decimals: decimals, symbol: symbol, addr: addr }, this.provider);
this.cache[addr] = ethToken;
return [2 /*return*/, ethToken];
}
});
});
};
TokenHelper.prototype.balanceOf = function (tokenAddr, userAddr) {
return __awaiter(this, void 0, void 0, function () {
var token;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
return [2 /*return*/, token.balanceOf(userAddr)];
}
});
});
};
TokenHelper.prototype.allowanceForGateway = function (tokenAddr, userAddr) {
return __awaiter(this, void 0, void 0, function () {
var token;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
return [2 /*return*/, token.allowance(userAddr, this.gatewayAddr)];
}
});
});
};
TokenHelper.prototype.parseAmount = function (tokenAddr, displayAmount) {
return __awaiter(this, void 0, void 0, function () {
var token, decimals;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
decimals = token.decimals;
return [2 /*return*/, new Amount_1.Amount(displayAmount, decimals, Amount_1.AmountUnit.DISPLAY)];
}
});
});
};
TokenHelper.prototype.formatAmount = function (tokenAddr, weiAmount) {
return __awaiter(this, void 0, void 0, function () {
var token, decimals;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.getToken(tokenAddr)];
case 1:
token = _a.sent();
decimals = token.decimals;
return [2 /*return*/, new Amount_1.Amount(weiAmount, decimals)];
}
});
});
};
TokenHelper.prototype.decimals = function (addr) {
return __awaiter(this, void 0, void 0, function () {
var data, transaction, result, e_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
data = ethers_1.ethers.utils.hexDataSlice(ethers_1.ethers.utils.id('decimals()'), 0, 4);
transaction = {
to: addr,
data: data
};
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4 /*yield*/, this.provider.call(transaction)];
case 2:
result = _a.sent();
return [2 /*return*/, Number(result)];
case 3:
e_1 = _a.sent();
return [2 /*return*/, 18];
case 4: return [2 /*return*/];
}
});
});
};
TokenHelper.prototype.name = function (addr) {
return __awaiter(this, void 0, void 0, function () {
var data, transaction, result, length_1, e_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
data = ethers_1.ethers.utils.hexDataSlice(ethers_1.ethers.utils.id('name()'), 0, 4);
transaction = {
to: addr,
data: data
};
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4 /*yield*/, this.provider.call(transaction)];
case 2:
result = _a.sent();
length_1 = ethers_1.ethers.utils.hexDataLength(result);
if (length_1 === 32) {
return [2 /*return*/, ethers_1.ethers.utils.parseBytes32String(result)];
}
else if (length_1 > 32) {
return [2 /*return*/, ethers_1.ethers.utils.parseBytes32String(ethers_1.ethers.utils.hexDataSlice(result, length_1 - 32))];
}
return [3 /*break*/, 4];
case 3:
e_2 = _a.sent();
return [2 /*return*/, ''];
case 4: return [2 /*return*/];
}
});
});
};
TokenHelper.prototype.symbol = function (addr) {
return __awaiter(this, void 0, void 0, function () {
var data, transaction, result, length_2, e_3;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
data = ethers_1.ethers.utils.hexDataSlice(ethers_1.ethers.utils.id('symbol()'), 0, 4);
transaction = {
to: addr,
data: data
};
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4 /*yield*/, this.provider.call(transaction)];
case 2:
result = _a.sent();
length_2 = ethers_1.ethers.utils.hexDataLength(result);
if (length_2 === 32) {
return [2 /*return*/, ethers_1.ethers.utils.parseBytes32String(result)];
}
else if (length_2 > 32) {
return [2 /*return*/, ethers_1.ethers.utils.parseBytes32String(ethers_1.ethers.utils.hexDataSlice(result, length_2 - 32))];
}
return [3 /*break*/, 4];
case 3:
e_3 = _a.sent();
return [2 /*return*/, ''];
case 4: return [2 /*return*/];
}
});
});
};
__decorate([
decorators.validate,
__param(0, decorators.validators.ethAddressHex),
__metadata("design:type", Function),
__metadata("design:paramtypes", [String]),
__metadata("design:returntype", Promise)
], TokenHelper.prototype, "getToken", null);
return TokenHelper;
}());
exports.TokenHelper = TokenHelper;
//# sourceMappingURL=TokenHelper.js.map