import { assert as sharedAssert } from '@0xproject/assert';
// We need those two unused imports because they're actually used by sharedAssert which gets injected here
// tslint:disable-next-line:no-unused-variable
import { Schema } from '@0xproject/json-schemas';
// tslint:disable-next-line:no-unused-variable
import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as _ from 'lodash';

import { ECSignature } from '../types';
import { signatureUtils } from '../utils/signature_utils';

export const assert = {
	...sharedAssert,
	isValidSignature(orderHash: string, ecSignature: ECSignature, signerAddress: string) {
		const isValidSignature = signatureUtils.isValidSignature(orderHash, ecSignature, signerAddress);
		this.assert(isValidSignature, `Expected order with hash '${orderHash}' to have a valid signature`);
	},
	async isSenderAddressAsync(
		variableName: string,
		senderAddressHex: string,
		web3Wrapper: Web3Wrapper,
	): Promise<void> {
		sharedAssert.isETHAddressHex(variableName, senderAddressHex);
		const isSenderAddressAvailable = await web3Wrapper.isSenderAddressAvailableAsync(senderAddressHex);
		sharedAssert.assert(
			isSenderAddressAvailable,
			`Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
		);
	},
	async isUserAddressAvailableAsync(web3Wrapper: Web3Wrapper): Promise<void> {
		const availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
		this.assert(!_.isEmpty(availableAddresses), 'No addresses were available on the provided web3 provider');
	},
};