import fs from 'fs/promises';
import path from 'path';
export async function saveData(dataDir, filename, data) {
try {
await fs.mkdir(dataDir, { recursive: true });
const filepath = path.join(dataDir, filename);
// Calculate date range
const dates = data.map(row => row.date || row.year).filter(Boolean);
let dateRange = 'N/A';
if (dates.length > 0) {
const sortedDates = dates.sort();
const minDate = sortedDates[0];
const maxDate = sortedDates[sortedDates.length - 1];
dateRange = `${minDate} to ${maxDate}`;
}
await fs.writeFile(filepath, JSON.stringify(data, null, 2));
console.error(`Saved ${data.length} records to ${filename} (Date Range: ${dateRange})`);
} catch (error) {
console.error(`Error saving ${filename}:`, error.message);
}
}
