Initial commit: StackPilot - Docker stack builder with 186 apps, compose analyser, analytics

api/server.js

@@ -0,0 +1,115 @@
+import express from 'express';
+import cors from 'cors';
+import { readFileSync, writeFileSync, existsSync } from 'fs';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const DATA_FILE = join(__dirname, 'data', 'popularity.json');
+const DOWNLOADS_LOG = join(__dirname, 'data', 'downloads.json');
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+
+// Ensure data dir exists
+import { mkdirSync } from 'fs';
+mkdirSync(join(__dirname, 'data'), { recursive: true });
+
+// Load or init popularity data
+function loadPopularity() {
+  if (existsSync(DATA_FILE)) {
+    return JSON.parse(readFileSync(DATA_FILE, 'utf8'));
+  }
+  return {};
+}
+
+function savePopularity(data) {
+  writeFileSync(DATA_FILE, JSON.stringify(data, null, 2));
+}
+
+function loadDownloads() {
+  if (existsSync(DOWNLOADS_LOG)) {
+    return JSON.parse(readFileSync(DOWNLOADS_LOG, 'utf8'));
+  }
+  return { total: 0, history: [] };
+}
+
+function saveDownloads(data) {
+  writeFileSync(DOWNLOADS_LOG, JSON.stringify(data, null, 2));
+}
+
+// POST /api/analytics/download — record a bundle download
+app.post('/api/analytics/download', (req, res) => {
+  const { apps, timestamp } = req.body;
+  if (!apps || !Array.isArray(apps)) {
+    return res.status(400).json({ error: 'apps array required' });
+  }
+
+  // Update popularity counts
+  const popularity = loadPopularity();
+  for (const appId of apps) {
+    popularity[appId] = (popularity[appId] || 0) + 1;
+  }
+  savePopularity(popularity);
+
+  // Log the download
+  const downloads = loadDownloads();
+  downloads.total += 1;
+  downloads.history.push({
+    timestamp: timestamp || new Date().toISOString(),
+    apps,
+    count: apps.length,
+  });
+  // Keep last 10,000 entries to avoid unbounded growth
+  if (downloads.history.length > 10000) {
+    downloads.history = downloads.history.slice(-10000);
+  }
+  saveDownloads(downloads);
+
+  res.json({ ok: true, total_downloads: downloads.total });
+});
+
+// GET /api/analytics/popularity — get app download counts
+app.get('/api/analytics/popularity', (req, res) => {
+  const popularity = loadPopularity();
+  res.json(popularity);
+});
+
+// GET /api/analytics/stats — overview stats
+app.get('/api/analytics/stats', (req, res) => {
+  const popularity = loadPopularity();
+  const downloads = loadDownloads();
+
+  // Top apps
+  const sorted = Object.entries(popularity)
+    .sort((a, b) => b[1] - a[1]);
+
+  res.json({
+    total_downloads: downloads.total,
+    unique_apps_selected: sorted.length,
+    top_20: sorted.slice(0, 20).map(([id, count]) => ({ id, count })),
+    recent: downloads.history.slice(-10).reverse(),
+  });
+});
+
+// GET /api/analytics/app/:id — stats for a specific app
+app.get('/api/analytics/app/:id', (req, res) => {
+  const popularity = loadPopularity();
+  const count = popularity[req.params.id] || 0;
+  const downloads = loadDownloads();
+  const total = downloads.total || 1;
+  const percentage = ((count / total) * 100).toFixed(1);
+
+  res.json({
+    id: req.params.id,
+    download_count: count,
+    percentage: `${percentage}%`,
+    total_bundles: total,
+  });
+});
+
+const PORT = process.env.PORT || 3052;
+app.listen(PORT, () => {
+  console.log(`StackPilot Analytics API running on port ${PORT}`);
+});