David Fencl
65 lines
2.2 KiB
TypeScript
65 lines
2.2 KiB
TypeScript
import fs from 'fs';
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import path from 'path';
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const DATA_DIR = path.resolve(process.cwd(), 'public/data');
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if (!fs.existsSync(DATA_DIR)) {
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console.error("Data directory not found.");
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process.exit(1);
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}
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const files = fs.readdirSync(DATA_DIR).filter(f => f.endsWith('.json') && f !== 'lakes_index.json');
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files.forEach(file => {
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const filePath = path.join(DATA_DIR, file);
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const data = JSON.parse(fs.readFileSync(filePath, 'utf-8'));
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if (data.length === 0) return;
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// The oldest record currently in DB
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const oldest = data[0];
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const oldestTime = new Date(oldest.timestamp).getTime();
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const newRecords: any[] = [];
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let currentLevel = oldest.level;
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let currentFlow = oldest.flow;
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let currentInflow = oldest.inflow || (Math.random() * 10 + 5);
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// Generate 720 records (30 days * 24 hours) going BACKWARDS
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for (let i = 1; i <= 720; i++) {
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const d = new Date(oldestTime - i * 60 * 60 * 1000);
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// random walk for level
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currentLevel = currentLevel + (Math.random() - 0.5) * 0.05;
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// random walk for outflow and inflow
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currentFlow = Math.max(0, currentFlow + (Math.random() - 0.5) * 2);
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currentInflow = Math.max(0, currentInflow + (Math.random() - 0.5) * 2);
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// Temperature: daily sine wave (colder at night, warmer in day) + noise
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const hour = d.getHours();
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const tempBase = 18; // base 18C
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const tempDay = Math.sin(((hour - 6) / 24) * Math.PI * 2) * 8; // cold morning, warm afternoon
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const randomTemp = tempBase + tempDay + (Math.random() - 0.5) * 2;
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// Precipitation: rare spikes
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const randomPrecip = Math.random() > 0.95 ? Math.random() * 15 : 0;
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newRecords.push({
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timestamp: d.toISOString(),
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level: currentLevel,
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flow: currentFlow,
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inflow: currentInflow,
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volume: oldest.volume, // volume changes too slow, keep constant for mock
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temperature: randomTemp,
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precipitation: randomPrecip
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});
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}
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// Combine: newRecords are older, so reverse them to make chronological (oldest first), then add real data
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const allRecords = [...newRecords.reverse(), ...data];
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fs.writeFileSync(filePath, JSON.stringify(allRecords, null, 2));
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console.log(`Generated 30 days of realistic mock history for ${file}`);
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});
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