[Intern] Squid api 연동 출발 및 도착 체인 트랜잭션 정보 조회 개발

private async fetchBaseTimestamp(blockNumber?: string): Promise {
    if (!blockNumber) return 0;
    try {
        const url = `https://api.basescan.org/api?module=block&action=getblockreward&blockno=${blockNumber}&apikey=${BASE_API_KEY}`;
        const { data } = await axios.get(url);
        return data?.result?.timeStamp ? parseInt(data.result.timeStamp) * 1000 : 0;
    } catch (error) {
        console.error(`Error fetching BaseScan timestamp for block: ${blockNumber}`, error);
        return 0;
    }
}

private async fetchTimestampFromUrl(transactionUrl: string): Promise {
    try {
        const response = await axios.get(transactionUrl);
        const $ = cheerio.load(response.data);
        const selector = transactionUrl.includes("etherscan.io")
            ? () => $('div#ContentPlaceHolder1_divTimeStamp').text().match(/Dec-\\d{2}-\\d{4} \\d{2}:\\d{2}:\\d{2} [AP]M UTC/)
            : transactionUrl.includes("arbiscan.io")
            ? () => $('span#showUtcLocalDate').attr('data-timestamp')
            : null;

        if (selector) {
            const result = selector();
            return result instanceof Array ? Date.parse(result[0] + ' UTC') : parseInt(result) * 1000;
        }

        return 0;
    } catch (error) {
        console.error(`Error fetching timestamp from URL: ${transactionUrl}`, error);
        return 0;
    }
}

파싱하는 방법은 페이지 html 구조 변경 시 정확한 데이터 불러오지 않는 위험성 있어, 아래 코드처럼 모두 체인별 api 불러오는 방식으로 변경

private async fetchChainTransactionDetails(chainName: string, transactionId: string): Promise {
    if (!transactionId) return { value: '0', hash: transactionId, timestamp: 0 };

    const chainApiMap = {
        ethereum: `https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=${transactionId}&apikey=${ETHEREUM_API_KEY}`,
        arbitrum: `https://api.arbiscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=${transactionId}&apikey=${ARBITRUM_API_KEY}`,
        base: `https://api.basescan.org/api?module=proxy&action=eth_getTransactionByHash&txhash=${transactionId}&apikey=${BASE_API_KEY}`,
    };

    const apiUrl = chainApiMap[chainName.toLowerCase()];
    if (!apiUrl) throw new Error(`Unsupported chain: ${chainName}`);

    try {
        const response = await axios.get(apiUrl);
        const tx = response.data?.result;
        if (!tx || !tx.blockNumber) return { value: '0', hash: transactionId, timestamp: 0 };

        const blockTimestamp = await this.fetchBlockTimestamp(chainName, tx.blockNumber);
        const value = tx.value ? (parseInt(tx.value, 16) / 1e18).toString() : '0';

        return { value, hash: transactionId, timestamp: blockTimestamp };
    } catch (error) {
        console.error(`Error fetching transaction details for ${transactionId} on ${chainName}`, error);
        return { value: '0', hash: transactionId, timestamp: 0 };
    }
}

private async fetchBlockTimestamp(chainName: string, blockNumber: string): Promise {
    const chainApiMap = {
        ethereum: `https://api.etherscan.io/api?module=block&action=getblockreward&blockno=${parseInt(blockNumber, 16)}&apikey=${ETHEREUM_API_KEY}`,
        arbitrum: `https://api.arbiscan.io/api?module=block&action=getblockreward&blockno=${parseInt(blockNumber, 16)}&apikey=${ARBITRUM_API_KEY}`,
        base: `https://api.basescan.org/api?module=block&action=getblockreward&blockno=${parseInt(blockNumber, 16)}&apikey=${BASE_API_KEY}`,
    };

    const apiUrl = chainApiMap[chainName.toLowerCase()];
    if (!apiUrl) throw new Error(`Unsupported chain: ${chainName}`);

    try {
        const response = await axios.get(apiUrl);
        return response.data?.result?.timeStamp ? parseInt(response.data.result.timeStamp) * 1000 : 0;
    } catch (error) {
        console.error(`Error fetching block timestamp for ${blockNumber} on ${chainName}`, error);
        return 0;
    }
}