49 lines
1.1 KiB
TypeScript
49 lines
1.1 KiB
TypeScript
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import { unzip } from 'fflate'
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export function unzipAsync(data: Uint8Array) {
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return new Promise((res, rej) => {
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unzip(data, {}, (err, data) => {
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if (err) {
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rej(err);
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return;
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}
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res(data);
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});
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});
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}
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export async function downloadEvents(fileName: string, deployedBlock: number) {
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fileName = fileName.toLowerCase()
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// @ts-ignore
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const prefix = __webpack_public_path__.slice(0, -7)
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try {
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const resp = await fetch(`${prefix}/${fileName}.zip`, {
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method: 'GET',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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}
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})
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const arrayBuffer = await resp.arrayBuffer()
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const { [fileName]: content } = (await unzipAsync(new Uint8Array(arrayBuffer))) as any
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const events = JSON.parse(new TextDecoder().decode(content))
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const lastBlock = events && Array.isArray(events) && events[events.length - 1]
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? events[events.length - 1].blockNumber
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: deployedBlock
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return {
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events,
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lastBlock
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}
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} catch {
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return {
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events: [],
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lastBlock: deployedBlock
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}
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}
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}
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