feat: Add built dist files with EU compliance routes

- Include compiled TypeScript with new /impressum, /privacy, /terms routes
- Temporary commit of dist files for Docker deployment

dist/middleware/usage.js

@@ -0,0 +1,75 @@
+import { isProKey } from "../services/keys.js";
+import logger from "../services/logger.js";
+import pool from "../services/db.js";
+const FREE_TIER_LIMIT = 100;
+// In-memory cache, periodically synced to PostgreSQL
+let usage = new Map();
+function getMonthKey() {
+    const d = new Date();
+    return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}`;
+}
+export async function loadUsageData() {
+    try {
+        const result = await pool.query("SELECT key, count, month_key FROM usage");
+        usage = new Map();
+        for (const row of result.rows) {
+            usage.set(row.key, { count: row.count, monthKey: row.month_key });
+        }
+        logger.info(`Loaded usage data for ${usage.size} keys from PostgreSQL`);
+    }
+    catch (error) {
+        logger.info("No existing usage data found, starting fresh");
+        usage = new Map();
+    }
+}
+async function saveUsageEntry(key, record) {
+    try {
+        await pool.query(`INSERT INTO usage (key, count, month_key) VALUES ($1, $2, $3)
+       ON CONFLICT (key) DO UPDATE SET count = $2, month_key = $3`, [key, record.count, record.monthKey]);
+    }
+    catch (error) {
+        logger.error({ err: error }, "Failed to save usage data");
+    }
+}
+export function usageMiddleware(req, res, next) {
+    const keyInfo = req.apiKeyInfo;
+    const key = keyInfo?.key || "unknown";
+    const monthKey = getMonthKey();
+    if (isProKey(key)) {
+        trackUsage(key, monthKey);
+        next();
+        return;
+    }
+    const record = usage.get(key);
+    if (record && record.monthKey === monthKey && record.count >= FREE_TIER_LIMIT) {
+        res.status(429).json({
+            error: "Free tier limit reached",
+            limit: FREE_TIER_LIMIT,
+            used: record.count,
+            upgrade: "Upgrade to Pro for unlimited conversions: https://docfast.dev/pricing",
+        });
+        return;
+    }
+    trackUsage(key, monthKey);
+    next();
+}
+function trackUsage(key, monthKey) {
+    const record = usage.get(key);
+    if (!record || record.monthKey !== monthKey) {
+        const newRecord = { count: 1, monthKey };
+        usage.set(key, newRecord);
+        saveUsageEntry(key, newRecord).catch((err) => logger.error({ err }, "Failed to save usage entry"));
+    }
+    else {
+        record.count++;
+        saveUsageEntry(key, record).catch((err) => logger.error({ err }, "Failed to save usage entry"));
+    }
+}
+export function getUsageStats() {
+    const stats = {};
+    for (const [key, record] of usage) {
+        const masked = key.slice(0, 8) + "...";
+        stats[masked] = { count: record.count, month: record.monthKey };
+    }
+    return stats;
+}