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import { AbiDecoder } from '@0xproject/utils';
import { DecodedLogArgs, LogEntry, LogWithDecodedArgs } from 'ethereum-types';
import * as R from 'ramda';
import { artifacts } from '../../artifacts';
// Raw events response from etherescan.io
export interface EventsResponse {
status: string;
message: string;
result: EventsResponseResult[];
}
// Events as represented in the response from etherscan.io
export interface EventsResponseResult {
address: string;
topics: string[];
data: string;
blockNumber: string;
timeStamp: string;
gasPrice: string;
gasUsed: string;
logIndex: string;
transactionHash: string;
transactionIndex: string;
}
function convertResponseToLogEntry(result: EventsResponseResult): LogEntry {
const radix = 10;
return {
logIndex: parseInt(result.logIndex, radix),
transactionIndex: parseInt(result.logIndex, radix),
transactionHash: result.transactionHash,
blockHash: '',
blockNumber: parseInt(result.blockNumber, radix),
address: result.address,
data: result.data,
topics: result.topics,
};
}
function tryToDecodeLogOrNoop(log: LogEntry): LogWithDecodedArgs<DecodedLogArgs> {
const abiDecoder = new AbiDecoder([artifacts.Exchange.compilerOutput.abi]);
const logWithDecodedArgs = abiDecoder.tryToDecodeLogOrNoop(log);
// tslint:disable-next-line:no-unnecessary-type-assertion
return logWithDecodedArgs as LogWithDecodedArgs<DecodedLogArgs>;
}
/**
* Parses and abi-decodes the raw events response from etherscan.io.
* @param rawEventsResponse The raw events response from etherescan.io.
* @returns Parsed and decoded events.
*/
export const parseRawEventsResponse = R.pipe(R.map(convertResponseToLogEntry), R.map(tryToDecodeLogOrNoop));
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