Initial commit: PicUpper webcam upload service

users.js

@@ -0,0 +1,139 @@
+import fs from 'fs';
+import path from 'path';
+import crypto from 'crypto';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const USERS_FILE = process.env.PICUPPER_USERS_FILE || path.join(__dirname, 'users.json');
+
+/**
+ * Load users from JSON file
+ */
+export function loadUsers() {
+    if (!fs.existsSync(USERS_FILE)) {
+        return {};
+    }
+
+    try {
+        const data = fs.readFileSync(USERS_FILE, 'utf-8');
+        return JSON.parse(data);
+    } catch (error) {
+        console.error('Error loading users file:', error.message);
+        return {};
+    }
+}
+
+/**
+ * Save users to JSON file
+ */
+export function saveUsers(users) {
+    fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2));
+}
+
+/**
+ * Generate a secure API key
+ */
+export function generateApiKey() {
+    return crypto.randomBytes(32).toString('hex');
+}
+
+/**
+ * Add a new user with generated API key
+ */
+export function addUser(username, description = '') {
+    const users = loadUsers();
+
+    if (users[username]) {
+        throw new Error(`User '${username}' already exists`);
+    }
+
+    const apiKey = generateApiKey();
+
+    users[username] = {
+        apiKey,
+        description,
+        createdAt: new Date().toISOString(),
+        enabled: true
+    };
+
+    saveUsers(users);
+    return apiKey;
+}
+
+/**
+ * Remove a user
+ */
+export function removeUser(username) {
+    const users = loadUsers();
+
+    if (!users[username]) {
+        throw new Error(`User '${username}' not found`);
+    }
+
+    delete users[username];
+    saveUsers(users);
+}
+
+/**
+ * Regenerate API key for a user
+ */
+export function regenerateApiKey(username) {
+    const users = loadUsers();
+
+    if (!users[username]) {
+        throw new Error(`User '${username}' not found`);
+    }
+
+    const newApiKey = generateApiKey();
+    users[username].apiKey = newApiKey;
+    users[username].keyRegeneratedAt = new Date().toISOString();
+
+    saveUsers(users);
+    return newApiKey;
+}
+
+/**
+ * Enable/disable a user
+ */
+export function setUserEnabled(username, enabled) {
+    const users = loadUsers();
+
+    if (!users[username]) {
+        throw new Error(`User '${username}' not found`);
+    }
+
+    users[username].enabled = enabled;
+    saveUsers(users);
+}
+
+/**
+ * List all users (without exposing full API keys)
+ */
+export function listUsers() {
+    const users = loadUsers();
+
+    return Object.entries(users).map(([username, data]) => ({
+        username,
+        description: data.description,
+        createdAt: data.createdAt,
+        enabled: data.enabled,
+        keyPreview: data.apiKey.substring(0, 8) + '...'
+    }));
+}
+
+/**
+ * Validate an API key and return the username if valid
+ */
+export function validateApiKey(apiKey) {
+    const users = loadUsers();
+
+    for (const [username, data] of Object.entries(users)) {
+        if (data.apiKey === apiKey && data.enabled) {
+            return username;
+        }
+    }
+
+    return null;
+}