const fs = require('fs');
const path = require('path');

const outputsRoot = path.resolve(__dirname, '..', 'outputs');
const dashboardStatePath = path.join(outputsRoot, 'dashboard', 'dashboard-state.json');
const roomsLatestPath = path.join(outputsRoot, 'groups', 'rooms-latest.json');

function timestamp() {
  return new Date().toISOString().replace(/[:.]/g, '-');
}

function backup(filePath) {
  const backupPath = `${filePath}.backup-${timestamp()}`;
  fs.copyFileSync(filePath, backupPath);
  console.log(`Backed up: ${filePath} -> ${backupPath}`);
  return backupPath;
}

function cleanDashboardState() {
  const data = JSON.parse(fs.readFileSync(dashboardStatePath, 'utf8'));
  const before = Object.keys(data.customers || {}).length;
  delete data.customers['wx-u-1'];
  const after = Object.keys(data.customers || {}).length;
  data.updatedAt = new Date().toISOString();
  fs.writeFileSync(dashboardStatePath, JSON.stringify(data, null, 2), 'utf8');
  console.log(`Dashboard state: removed ${before - after} mock customer(s)`);
}

function cleanRoomsLatest() {
  const rooms = JSON.parse(fs.readFileSync(roomsLatestPath, 'utf8'));
  const mockIds = new Set(['r-1', 'r-2', 'r-3']);
  const before = rooms.length;
  const cleaned = rooms.filter(room => !mockIds.has(room.roomId));
  const after = cleaned.length;
  fs.writeFileSync(roomsLatestPath, JSON.stringify(cleaned, null, 2), 'utf8');
  console.log(`Rooms latest: removed ${before - after} mock group(s)`);
}

backup(dashboardStatePath);
backup(roomsLatestPath);
cleanDashboardState();
cleanRoomsLatest();
console.log('Cleanup complete.');