const fs = require('fs');
const text = fs.readFileSync('C:/ScriptoriumAI/scriptoriumai-ui/src/__tests__/Runboard.telemetry-lockstep-parity.test.tsx', 'utf8');
const regex = /^\s*it\([\'\"\].*?[\'\"\],\s*(?:async\s*)?\(\)\s*=>\s*\{/gm;
let matches = [];
let match;
while ((match = regex.exec(text)) !== null) { matches.push(match.index); }
let tailIdx = text.lastIndexOf('})');
let prefix = text.substring(0, matches[0]);
let suffix = text.substring(tailIdx);
let batchSize = Math.ceil(matches.length / 4);

for (let i = 0; i < 4; i++) {
    let chunk = matches.slice(i * batchSize, (i + 1) * batchSize);
    if (!chunk.length) break;
    let start = chunk[0];
    let end = (i === 3 || !matches[(i+1)*batchSize]) ? tailIdx : matches[(i+1)*batchSize];
    let body = text.substring(start, end);
    fs.writeFileSync('C:/ScriptoriumAI/scriptoriumai-ui/src/__tests__/Runboard.telemetry-lockstep.part' + (i+1) + '.test.tsx', prefix + body + suffix);
}
fs.unlinkSync('C:/ScriptoriumAI/scriptoriumai-ui/src/__tests__/Runboard.telemetry-lockstep-parity.test.tsx');