61 lines
2.1 KiB
TypeScript
61 lines
2.1 KiB
TypeScript
import { BigNumber, logUtils } from '@0xproject/utils';
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import * as _ from 'lodash';
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import { portalOrderSchema } from 'ts/schemas/portal_order_schema';
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import { validator } from 'ts/schemas/validator';
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import { PortalOrder } from 'ts/types';
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export const orderParser = {
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parse(queryString: string): PortalOrder | undefined {
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if (queryString.length === 0) {
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return undefined;
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}
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const queryParams = queryString.substring(1).split('&');
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const orderQueryParam = _.find(queryParams, queryParam => {
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const queryPair = queryParam.split('=');
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return queryPair[0] === 'order';
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});
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if (_.isUndefined(orderQueryParam)) {
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return undefined;
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}
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const orderPair = orderQueryParam.split('=');
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if (orderPair.length !== 2) {
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return undefined;
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}
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const order = JSON.parse(decodeURIComponent(orderPair[1]));
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const validationResult = validator.validate(order, portalOrderSchema);
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if (validationResult.errors.length > 0) {
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logUtils.log(`Invalid shared order: ${validationResult.errors}`);
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return undefined;
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}
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const result = convertOrderStringFieldsToBigNumber(order);
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return result;
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},
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};
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// TODO: consolidate this function with that in typeConverters in @0xproject/connect
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function convertOrderStringFieldsToBigNumber(order: any): any {
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return convertStringsFieldsToBigNumbers(order, [
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'makerAssetAmount',
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'takerAssetAmount',
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'makerFee',
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'takerFee',
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'expirationTimeSeconds',
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'salt',
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]);
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}
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// TODO: consolidate this function with that in typeConverters in @0xproject/connect
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function convertStringsFieldsToBigNumbers(obj: any, fields: string[]): any {
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const result = _.assign({}, obj);
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_.each(fields, field => {
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_.update(result, field, (value: string) => {
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if (_.isUndefined(value)) {
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throw new Error(`Could not find field '${field}' while converting string fields to BigNumber.`);
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}
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return new BigNumber(value);
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});
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});
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return result;
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}
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