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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import {Contract as EthersContract, InterfaceAbi, LogDescription} from 'ethers'
import {stripShardRealm} from '../utils'
import {ContractEventLogs} from '../client/graphql'
import HgraphClient, {
Contract,
ContractOptions,
ContractQueryEventsParams,
} from '../types'
export {LogDescription, InterfaceAbi, Contract as EthersContract} from 'ethers'
export class HgraphContract implements Contract {
public contractId: string
public abi: InterfaceAbi
public client: HgraphClient
public contract: EthersContract
constructor(options: ContractOptions) {
this.contractId = options.contractId
this.abi = options.abi
this.client = options.client
// We don't need a valid contract evm address for parsing;
this.contract = new EthersContract(
'0x0000000000000000000000000000000000000000',
options.abi
)
}
async queryEvents(params: ContractQueryEventsParams = {}) {
const {limit = 10, offset = 0, order = 'desc'} = params
const {data: eventLogs, errors} = await this.client.query<{
logs: {
data: string | null
topic0: string | null
topic1: string | null
topic2: string | null
topic3: string | null
}[]
}>({
query: ContractEventLogs,
variables: {
contract_id: stripShardRealm(this.contractId),
limit,
offset,
order,
},
})
Iif (errors?.length) {
throw errors[0]
}
const parsedEvents: LogDescription[] = []
// format logs to fit ethers logs structure
const formattedLogs: {
topics: string[]
data: string
}[] = []
const formatHex = (value: string) => '0x' + value.slice(2).padStart(64, '0')
eventLogs.logs?.forEach((log) => {
Iif (!log.data) return
const topics = [log.topic0, log.topic1, log.topic2, log.topic3]
.filter(Boolean)
.map((topic) => formatHex(topic!))
formattedLogs.push({
data: formatHex(log.data),
topics,
})
})
// decode logs
formattedLogs.forEach((log) => {
try {
const eventFragment = this.contract.interface.parseLog(log)
Iif (!eventFragment) return
parsedEvents.push(eventFragment)
} catch (error) {
console.error('Error decoding log:', error)
}
})
return parsedEvents
}
}
export {detectContractType, type ContractType} from './detectContractType'
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