Update server.js

server.js

@@ -32,6 +32,7 @@ const IV_LEN = 12;
 const TAG_LEN = 16;
 const OVERHEAD = IV_LEN + TAG_LEN;
 
+// --- ENV ---
 const IMGBB_API_KEY = process.env.IMGBB_API_KEY;
 const SESSION_SECRET = process.env.SESSION_SECRET;
 const ADMIN_USER = process.env.ADMIN_USER || 'admin';
@@ -41,51 +42,113 @@ if (!IMGBB_API_KEY || !SESSION_SECRET) {
     process.exit(1);
 }
 
+// --- DATABASE INSTANCE (DÉCLARÉE ICI, AVANT TOUT USAGE) ---
 const db = new Database(DB_PATH);
 db.pragma('journal_mode = WAL');
 db.pragma('busy_timeout = 5000');
 
+// --- CRYPTO UTILS ---
 const scryptAsync = promisify(scrypt);
 async function deriveKey(password, salt) { return scryptAsync(password, salt, KEY_LEN); }
 function encryptChunk(dataBuffer, key) { const iv = randomBytes(IV_LEN); const cipher = createCipheriv('aes-256-gcm', key, iv); const encrypted = Buffer.concat([cipher.update(dataBuffer), cipher.final()]); const tag = cipher.getAuthTag(); return Buffer.concat([iv, encrypted, tag]); }
 function decryptChunk(encBuffer, key) { if (encBuffer.length < OVERHEAD) throw new Error('Buffer trop court'); const iv = encBuffer.subarray(0, IV_LEN); const tag = encBuffer.subarray(encBuffer.length - TAG_LEN); const data = encBuffer.subarray(IV_LEN, encBuffer.length - TAG_LEN); const decipher = createDecipheriv('aes-256-gcm', key, iv); decipher.setAuthTag(tag); return Buffer.concat([decipher.update(data), decipher.final()]); }
 
-function bufferToPng(buffer) { 
-    const byteLen = buffer.length; 
-    const pixelsNeeded = Math.ceil(byteLen / 3); 
-    const width = Math.ceil(Math.sqrt(pixelsNeeded)); 
-    const height = Math.ceil(pixelsNeeded / width); 
-    const rgbBuffer = Buffer.alloc(width * height * 3); 
-    buffer.copy(rgbBuffer); 
-    return sharp(rgbBuffer, { raw: { width, height, channels: 3 } }).png({ compressionLevel: 9, palette: false }).withMetadata(false).toBuffer(); 
+// --- PNG STEGANOGRAPHY ---
+function bufferToPng(buffer) {
+    const byteLen = buffer.length;
+    const pixelsNeeded = Math.ceil(byteLen / 3);
+    const width = Math.ceil(Math.sqrt(pixelsNeeded));
+    const height = Math.ceil(pixelsNeeded / width);
+    const rgbBuffer = Buffer.alloc(width * height * 3);
+    buffer.copy(rgbBuffer);
+    // ✅ withMetadata(false) : empêche sharp d'injecter des profils ICC qui corrompraient les octets
+    return sharp(rgbBuffer, { raw: { width, height, channels: 3 } }).png({ compressionLevel: 9, palette: false }).withMetadata(false).toBuffer();
 }
-async function pngToBuffer(pngBuffer, expectedLen) { 
-    const { data, info } = await sharp(pngBuffer).ensureAlpha().raw().toBuffer({ resolveWithObject: true }); 
-    const rgb = Buffer.alloc(info.width * info.height * 3); 
-    let j = 0; 
-    for (let i = 0; i < data.length; i += 4) { 
-        if (j + 2 < rgb.length) { rgb[j++] = data[i]; rgb[j++] = data[i+1]; rgb[j++] = data[i+2]; } 
-    } 
-    return rgb.subarray(0, expectedLen); 
+async function pngToBuffer(pngBuffer, expectedLen) {
+    const { data, info } = await sharp(pngBuffer).ensureAlpha().raw().toBuffer({ resolveWithObject: true });
+    const rgb = Buffer.alloc(info.width * info.height * 3);
+    let j = 0;
+    for (let i = 0; i < data.length; i += 4) {
+        if (j + 2 < rgb.length) { rgb[j++] = data[i]; rgb[j++] = data[i+1]; rgb[j++] = data[i+2]; }
+    }
+    // ✅ On retourne EXACTEMENT la longueur attendue, en ignorant le padding de l'image
+    return rgb.subarray(0, expectedLen);
 }
 
+// ==========================================
+// SCHÉMA DE BASE (Tables seulement, PAS d'index sur folder_id)
+// ==========================================
 db.exec(`
-CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password_hash BLOB NOT NULL, salt BLOB NOT NULL, is_admin INTEGER DEFAULT 0, tos_accepted INTEGER DEFAULT 0, created_at INTEGER DEFAULT (strftime('%s','now')));
-CREATE TABLE IF NOT EXISTS folders (id INTEGER PRIMARY KEY AUTOINCREMENT, parent_id INTEGER REFERENCES folders(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, name TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), UNIQUE(parent_id, owner_id, name));
-CREATE TABLE IF NOT EXISTS files (id TEXT PRIMARY KEY, folder_id INTEGER REFERENCES folders(id) ON DELETE SET NULL, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, name TEXT NOT NULL, mime TEXT NOT NULL, size INTEGER NOT NULL, chunk_count INTEGER DEFAULT 1, status TEXT DEFAULT 'pending', progress REAL DEFAULT 0, error_msg TEXT, encryption_key_hash TEXT NOT NULL, master_key_enc BLOB, created_at INTEGER DEFAULT (strftime('%s','now')), updated_at INTEGER DEFAULT (strftime('%s','now')));
-CREATE TABLE IF NOT EXISTS file_chunks (id INTEGER PRIMARY KEY AUTOINCREMENT, file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE, chunk_index INTEGER NOT NULL, imgbb_url TEXT, imgbb_delete_url TEXT, imgbb_id TEXT, size INTEGER NOT NULL, encrypted_len INTEGER NOT NULL, UNIQUE(file_id, chunk_index));
-CREATE TABLE IF NOT EXISTS share_links (token TEXT PRIMARY KEY, file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, type TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), expires_at INTEGER);
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    username TEXT UNIQUE NOT NULL,
+    password_hash BLOB NOT NULL,
+    salt BLOB NOT NULL,
+    is_admin INTEGER DEFAULT 0,
+    tos_accepted INTEGER DEFAULT 0,
+    created_at INTEGER DEFAULT (strftime('%s','now'))
+);
+CREATE TABLE IF NOT EXISTS folders (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    parent_id INTEGER REFERENCES folders(id) ON DELETE CASCADE,
+    owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    created_at INTEGER DEFAULT (strftime('%s','now')),
+    UNIQUE(parent_id, owner_id, name)
+);
+CREATE TABLE IF NOT EXISTS files (
+    id TEXT PRIMARY KEY,
+    folder_id INTEGER REFERENCES folders(id) ON DELETE SET NULL,
+    owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    mime TEXT NOT NULL,
+    size INTEGER NOT NULL,
+    chunk_count INTEGER DEFAULT 1,
+    status TEXT DEFAULT 'pending',
+    progress REAL DEFAULT 0,
+    error_msg TEXT,
+    encryption_key_hash TEXT NOT NULL,
+    master_key_enc BLOB,
+    created_at INTEGER DEFAULT (strftime('%s','now')),
+    updated_at INTEGER DEFAULT (strftime('%s','now'))
+);
+CREATE TABLE IF NOT EXISTS file_chunks (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE,
+    chunk_index INTEGER NOT NULL,
+    imgbb_url TEXT,
+    imgbb_delete_url TEXT,
+    imgbb_id TEXT,
+    size INTEGER NOT NULL,
+    encrypted_len INTEGER NOT NULL,
+    UNIQUE(file_id, chunk_index)
+);
+CREATE TABLE IF NOT EXISTS share_links (
+    token TEXT PRIMARY KEY,
+    file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE,
+    owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    type TEXT NOT NULL,
+    created_at INTEGER DEFAULT (strftime('%s','now')),
+    expires_at INTEGER
+);
 CREATE INDEX IF NOT EXISTS idx_files_owner ON files(owner_id);
 CREATE INDEX IF NOT EXISTS idx_chunks_file ON file_chunks(file_id);
 `);
 
+// ==========================================
+// MIGRATIONS (Ajoute colonnes manquantes SI table existe déjà)
+// ==========================================
 function runMigrations() {
     console.log('🔍 Vérification migrations BDD...');
+
+    // --- MIGRATION TABLE USERS (tos_accepted) ---
     const usersCols = db.prepare("PRAGMA table_info(users)").all().map(c => c.name);
     if (!usersCols.includes('tos_accepted')) {
         console.log('🔧 Migration: ALTER TABLE users ADD COLUMN tos_accepted');
         db.exec(`ALTER TABLE users ADD COLUMN tos_accepted INTEGER DEFAULT 0;`);
     }
+
+    // --- MIGRATION TABLE FILES ---
     const filesCols = db.prepare("PRAGMA table_info(files)").all().map(c => c.name);
     const filesDefs = [
         { name: 'folder_id', def: 'INTEGER REFERENCES folders(id) ON DELETE SET NULL' },
@@ -95,8 +158,9 @@ function runMigrations() {
         { name: 'progress', def: 'REAL DEFAULT 0' },
         { name: 'error_msg', def: 'TEXT' },
         { name: 'chunk_count', def: 'INTEGER DEFAULT 1' },
-        { name: 'updated_at', def: 'INTEGER DEFAULT 0' },
+        { name: 'updated_at', def: 'INTEGER DEFAULT 0' }, // ✅ Constante (SQLite refuse une expression dans ALTER TABLE)
     ];
+
     let updatedAdded = false;
     for (const col of filesDefs) {
         if (!filesCols.includes(col.name)) {
@@ -106,190 +170,321 @@ function runMigrations() {
         }
     }
     if (updatedAdded) {
+        console.log('🔧 Migration: Initialisation updated_at sur les lignes existantes');
         db.exec(`UPDATE files SET updated_at = strftime('%s','now') WHERE updated_at = 0;`);
     }
+
+    // --- TABLES MANQUANTES ---
     const tables = db.prepare("SELECT name FROM sqlite_master WHERE type='table'").all().map(t => t.name);
-    if (!tables.includes('folders')) db.exec(`CREATE TABLE folders (id INTEGER PRIMARY KEY AUTOINCREMENT, parent_id INTEGER REFERENCES folders(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, name TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), UNIQUE(parent_id, owner_id, name));`); 
-    if (!tables.includes('share_links')) db.exec(`CREATE TABLE share_links (token TEXT PRIMARY KEY, file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, type TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), expires_at INTEGER);`); 
+
+    if (!tables.includes('folders')) {
+        console.log('🔧 Migration: CREATE TABLE folders');
+        db.exec(`CREATE TABLE folders (id INTEGER PRIMARY KEY AUTOINCREMENT, parent_id INTEGER REFERENCES folders(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, name TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), UNIQUE(parent_id, owner_id, name));`);
+    }
+    if (!tables.includes('share_links')) {
+        console.log('🔧 Migration: CREATE TABLE share_links');
+        db.exec(`CREATE TABLE share_links (token TEXT PRIMARY KEY, file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE, owner_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE, type TEXT NOT NULL, created_at INTEGER DEFAULT (strftime('%s','now')), expires_at INTEGER);`);
+    }
+
+    // --- CORRECTION TABLE SESSIONS (ancien schéma incompatible) ---
     const sessionsCols = tables.includes('sessions') ? db.prepare("PRAGMA table_info(sessions)").all().map(c => c.name) : [];
     if (tables.includes('sessions') && (!sessionsCols.includes('data') || !sessionsCols.includes('expires_at'))) {
+        console.log('🔧 Migration: Reconstruction table sessions (colonnes manquantes)');
         db.exec(`DROP TABLE sessions; CREATE TABLE sessions (sid TEXT PRIMARY KEY, data TEXT NOT NULL, expires_at INTEGER NOT NULL); CREATE INDEX idx_sessions_expires ON sessions(expires_at);`);
     } else if (!tables.includes('sessions')) {
-        db.exec(`CREATE TABLE sessions (sid TEXT PRIMARY KEY, data TEXT NOT NULL, expires_at INTEGER NOT NULL); CREATE INDEX idx_sessions_expires ON sessions(expires_at);`); 
+        console.log('🔧 Migration: CREATE TABLE sessions');
+        db.exec(`CREATE TABLE sessions (sid TEXT PRIMARY KEY, data TEXT NOT NULL, expires_at INTEGER NOT NULL); CREATE INDEX idx_sessions_expires ON sessions(expires_at);`);
     }
+
     console.log('✅ Migrations terminées.');
 }
 runMigrations();
 
+// ==========================================
+// INDEX & TRIGGERS DÉPENDANTS (Maintenant que folder_id existe)
+// ==========================================
 db.exec(`
 CREATE INDEX IF NOT EXISTS idx_files_folder ON files(folder_id);
 DROP TRIGGER IF EXISTS update_file_ts;
-CREATE TRIGGER update_file_ts AFTER UPDATE ON files BEGIN UPDATE files SET updated_at = strftime('%s','now') WHERE id = NEW.id; END;
+CREATE TRIGGER update_file_ts AFTER UPDATE ON files
+BEGIN
+    UPDATE files SET updated_at = strftime('%s','now') WHERE id = NEW.id;
+END;
 `);
 
+// --- SESSION STORE (Native) ---
+// ✅ Hérite de session.Store (EventEmitter) => fournit .on() requis par express-session
 class SQLiteStore extends session.Store {
-    get(sid, cb) { try { const r = db.prepare('SELECT data, expires_at FROM sessions WHERE sid=?').get(sid); if(!r) return cb(null, null); if(r.expires_at < Date.now()){ db.prepare('DELETE FROM sessions WHERE sid=?').run(sid); return cb(null, null); } cb(null, JSON.parse(r.data)); } catch(e){ cb(e); } }
-    set(sid, sess, cb) { try { const exp = sess.cookie?.expires ? new Date(sess.cookie.expires).getTime() : Date.now() + 30*24*60*60*1000; db.prepare('INSERT OR REPLACE INTO sessions(sid,data,expires_at) VALUES(?,?,?)').run(sid, JSON.stringify(sess), exp); cb(null); } catch(e){ cb(e); } }
-    destroy(sid, cb) { try { db.prepare('DELETE FROM sessions WHERE sid=?').run(sid); cb(null); } catch(e){ cb(e); } }
-    clear(cb) { try { db.prepare('DELETE FROM sessions').run(); cb(null); } catch(e){ cb(e); } }
-    length(cb) { try { const r = db.prepare('SELECT COUNT(*) as c FROM sessions').get(); cb(null, r.c); } catch(e){ cb(e); } }
+    get(sid, cb) {
+        try {
+            const r = db.prepare('SELECT data, expires_at FROM sessions WHERE sid=?').get(sid);
+            if (!r) return cb(null, null);
+            if (r.expires_at < Date.now()) {
+                db.prepare('DELETE FROM sessions WHERE sid=?').run(sid);
+                return cb(null, null);
+            }
+            cb(null, JSON.parse(r.data));
+        } catch (e) { cb(e); }
+    }
+    set(sid, sess, cb) {
+        try {
+            const exp = sess.cookie?.expires ? new Date(sess.cookie.expires).getTime() : Date.now() + 30*24*60*60*1000;
+            db.prepare('INSERT OR REPLACE INTO sessions(sid,data,expires_at) VALUES(?,?,?)').run(sid, JSON.stringify(sess), exp);
+            cb(null);
+        } catch (e) { cb(e); }
+    }
+    destroy(sid, cb) { try { db.prepare('DELETE FROM sessions WHERE sid=?').run(sid); cb(null); } catch (e) { cb(e); } }
+    clear(cb) { try { db.prepare('DELETE FROM sessions').run(); cb(null); } catch (e) { cb(e); } }
+    length(cb) { try { const r = db.prepare('SELECT COUNT(*) as c FROM sessions').get(); cb(null, r.c); } catch (e) { cb(e); } }
     touch(sid, sess, cb) { this.set(sid, sess, cb); }
 }
 const sessionStore = new SQLiteStore();
 
+// --- ADMIN INIT ---
 const adminRow = db.prepare('SELECT * FROM users WHERE username=?').get(ADMIN_USER);
-if (!adminRow) { 
-    const salt = randomBytes(16); 
-    const hash = await deriveKey(process.env.ADMIN_PASS || 'ChangeMeNow!', salt); 
-    db.prepare('INSERT INTO users(username,password_hash,salt,is_admin,tos_accepted) VALUES(?,?,?,1,1)').run(ADMIN_USER, hash, salt); 
-    console.log(`👑 Admin: ${ADMIN_USER} / Pass: ${process.env.ADMIN_PASS || 'ChangeMeNow!'}`); 
+if (!adminRow) {
+    const salt = randomBytes(16);
+    const hash = await deriveKey(process.env.ADMIN_PASS || 'ChangeMeNow!', salt);
+    db.prepare('INSERT INTO users(username,password_hash,salt,is_admin,tos_accepted) VALUES(?,?,?,1,1)').run(ADMIN_USER, hash, salt);
+    console.log(`👑 Admin: ${ADMIN_USER} / Pass: ${process.env.ADMIN_PASS || 'ChangeMeNow!'}`);
 }
 
+// --- EXPRESS ---
 const app = express();
 app.set('trust proxy', 1);
 app.use(express.json({ limit: '50mb' }));
 app.use(express.urlencoded({ extended: true, limit: '50mb' }));
-app.use(session({ secret: SESSION_SECRET, store: sessionStore, resave: false, saveUninitialized: false, cookie: { secure: false, httpOnly: true, maxAge: 30*24*60*60*1000, sameSite: 'lax' } }));
-
-const requireAuth = (req, res, next) => { if(!req.session.userId) return res.status(401).json({error:'Non authentifié'}); next(); };
-const requireTos = (req, res, next) => { if(!req.session.tosAccepted) return res.status(403).json({error:'CGU non acceptées', needTos:true}); next(); };
-
-class ByteLRUCache extends LRUCache { constructor(){ super({maxSize:CACHE_MAX_BYTES, sizeCalculation:v=>v.size}); } }
+app.use(session({
+    secret: SESSION_SECRET,
+    store: sessionStore,
+    resave: false,
+    saveUninitialized: false,
+    cookie: { secure: false, httpOnly: true, maxAge: 30*24*60*60*1000, sameSite: 'lax' }
+}));
+
+const requireAuth = (req, res, next) => { if (!req.session.userId) return res.status(401).json({error:'Non authentifié'}); next(); };
+const requireTos = (req, res, next) => { if (!req.session.tosAccepted) return res.status(403).json({error:'CGU non acceptées', needTos:true}); next(); };
+
+// --- CACHE LRU ---
+class ByteLRUCache extends LRUCache {
+    constructor(){ super({maxSize:CACHE_MAX_BYTES, sizeCalculation:v=>v.size}); }
+    async getOrLoad(key, loader){ if(this.has(key)) return this.get(key).data; const data=await loader(); this.set(key,{data,size:data.length,time:Date.now()}); return data; }
+}
 const fileCache = new ByteLRUCache();
-setInterval(()=>{ const m=process.memoryUsage(); if(m.rss>13*1024*1024*1024){ fileCache.clear(); if(global.gc) global.gc(); } }, 30000);
-
-let nsfwModel=null;
-async function loadNsfwModel(){ try{ await tf.setBackend('wasm'); tf.wasm.setWasmPaths('/app/tfjs_wasm/','tfjs-backend-wasm.wasm'); await tf.ready(); nsfwModel=await nsfwjs.load('/app/tfjs_wasm/',{type:'mobilenet_v2',size:224}); console.log('🛡️ NSFW WASM chargé'); }catch(e){ console.error('❌ NSFW load fail:',e.message); } }
+setInterval(()=>{ const m=process.memoryUsage(); if(m.rss>13*1024*1024*1024){ console.warn(`⚠️ RAM ${(m.rss/1e9).toFixed(1)}GB, vidage cache`); fileCache.clear(); if(global.gc) global.gc(); } }, 30000);
+
+// --- NSFW WASM ---
+let nsfwModel = null;
+async function loadNsfwModel(){
+    try{
+        await tf.setBackend('wasm');
+        tf.wasm.setWasmPaths('/app/tfjs_wasm/','tfjs-backend-wasm.wasm');
+        await tf.ready();
+        nsfwModel = await nsfwjs.load('/app/tfjs_wasm/',{type:'mobilenet_v2',size:224});
+        console.log('🛡️ NSFW WASM chargé');
+    }catch(e){ console.error('❌ NSFW load fail:',e.message); }
+}
 loadNsfwModel();
 
-class UploadQueue{ constructor(c){ this.c=c; this.r=0; this.q=[]; } add(t){ return new Promise((res,rej)=>{ this.q.push({t,res,rej}); this.proc(); }); } async proc(){ if(this.r>=this.c||!this.q.length) return; this.r++; const {t,res,rej}=this.q.shift(); try{ res(await t()); }catch(e){ rej(e); }finally{ this.r--; this.proc(); } } }
-const uploadQueue=new UploadQueue(MAX_CONCURRENT_UPLOADS);
+async function checkNsfw(buf){
+    if(!nsfwModel) return {safe:true};
+    try{
+        const t=tf.node.decodeImage(buf,3).resizeNearestNeighbor([224,224]).expandDims(0);
+        const p=await nsfwModel.classify(t);
+        t.dispose();
+        const porn=p.find(x=>x.className==='Porn'||x.className==='Sexual Activity')?.probability||0;
+        const hentai=p.find(x=>x.className==='Hentai')?.probability||0;
+        if(porn>0.85||hentai>0.9) return {safe:false,reason:`NSFW (P:${porn.toFixed(2)} H:${hentai.toFixed(2)})`};
+        return {safe:true};
+    }catch(e){ return {safe:true}; }
+}
 
-async function imgbbUpload(buf){ const f=new FormData(); f.append('image',buf.toString('base64')); const {data}=await axios.post(`https://api.imgbb.com/1/upload?key=${IMGBB_API_KEY}`,f,{headers:f.getHeaders(),timeout:120000,maxContentLength:Infinity,maxBodyLength:Infinity}); if(!data.success) throw new Error(data.error?.message||'ImgBB fail'); return {url:data.data.url,deleteUrl:data.data.delete_url,id:data.data.id}; }
+// --- UPLOAD QUEUE ---
+class UploadQueue{ constructor(c){ this.c=c; this.r=0; this.q=[]; } add(t){ return new Promise((res,rej)=>{ this.q.push({t,res,rej}); this.proc(); }); } async proc(){ if(this.r>=this.c||!this.q.length) return; this.r++; const {t,res,rej}=this.q.shift(); try{ res(await t()); }catch(e){ rej(e); }finally{ this.r--; this.proc(); } } }
+const uploadQueue = new UploadQueue(MAX_CONCURRENT_UPLOADS);
+
+// --- IMGBB ---
+async function imgbbUpload(buf){
+    const f=new FormData();
+    f.append('image',buf.toString('base64'));
+    const {data}=await axios.post(`https://api.imgbb.com/1/upload?key=${IMGBB_API_KEY}`,f,{headers:f.getHeaders(),timeout:120000,maxContentLength:Infinity,maxBodyLength:Infinity});
+    if(!data.success) throw new Error(data.error?.message||'ImgBB fail');
+    return {url:data.data.url,deleteUrl:data.data.delete_url,id:data.data.id};
+}
 async function imgbbDelete(u){ try{await axios.get(u,{timeout:10000});}catch(_){} }
 
+// --- KEY MGMT ---
 const SERVER_MASTER_KEY=createHash('sha256').update(SESSION_SECRET+'|PixelDriveMaster').digest();
 function encryptMasterKey(k){ const iv=randomBytes(12); const c=createCipheriv('aes-256-gcm',SERVER_MASTER_KEY,iv); return Buffer.concat([iv,c.update(k),c.final(),c.getAuthTag()]); }
 function decryptMasterKey(b){ const iv=b.subarray(0,12), tag=b.subarray(-16), d=b.subarray(12,-16); const dc=createDecipheriv('aes-256-gcm',SERVER_MASTER_KEY,iv); dc.setAuthTag(tag); return Buffer.concat([dc.update(d),dc.final()]); }
 async function getMasterKey(uid,fid){ const r=db.prepare('SELECT master_key_enc FROM files WHERE id=? AND owner_id=?').get(fid,uid); if(!r?.master_key_enc) throw new Error('Clé manquante'); return decryptMasterKey(r.master_key_enc); }
 
-async function genThumb(fid,mime,key){ 
-    if(!mime.startsWith('image/')&&!mime.startsWith('video/')) return; 
-    try{ 
-        const c=db.prepare('SELECT imgbb_url, size FROM file_chunks WHERE file_id=? AND chunk_index=0').get(fid); 
-        if(!c) return; 
-        const {data}=await axios.get(c.imgbb_url,{responseType:'arraybuffer',timeout:30000}); 
-        const enc=await pngToBuffer(Buffer.from(data), c.size + OVERHEAD); 
-        const dec=decryptChunk(enc,key); 
-        let buf; 
-        if(mime.startsWith('image/')) buf=await sharp(dec).rotate().resize(256,256,{fit:'inside'}).jpeg({quality:80}).toBuffer(); 
-        else buf=await sharp({create:{width:256,height:144,channels:3,background:'#1e1e2f'}}).jpeg().toBuffer(); 
-        await sharp(buf).toFile(join(THUMB_DIR,`${fid}.jpg`)); 
-    }catch(e){ console.warn(`Thumb ${fid}:`,e.message); } 
+// --- THUMB ---
+async function genThumb(fid,mime,key){
+    if(!mime.startsWith('image/')&&!mime.startsWith('video/')) return;
+    try{
+        // ✅ CORRECTION : longueur exacte du chiffré = size + OVERHEAD (ignore le padding PNG)
+        const c=db.prepare('SELECT imgbb_url, size FROM file_chunks WHERE file_id=? AND chunk_index=0').get(fid);
+        if(!c) return;
+        const {data}=await axios.get(c.imgbb_url,{responseType:'arraybuffer',timeout:30000});
+        const enc=await pngToBuffer(Buffer.from(data), c.size + OVERHEAD);
+        const dec=decryptChunk(enc,key);
+        let buf;
+        if(mime.startsWith('image/')) buf=await sharp(dec).rotate().resize(256,256,{fit:'inside'}).jpeg({quality:80}).toBuffer();
+        else buf=await sharp({create:{width:256,height:144,channels:3,background:'#1e1e2f'}}).jpeg().toBuffer();
+        await sharp(buf).toFile(join(THUMB_DIR,`${fid}.jpg`));
+    }catch(e){ console.warn(`Thumb ${fid}:`,e.message); }
 }
 
-async function streamFile(res,file,key,range){ 
-    const chunks=db.prepare('SELECT chunk_index,imgbb_url,size FROM file_chunks WHERE file_id=? ORDER BY chunk_index').all(file.id); 
-    const total=file.size; 
-    let s=0,e=total-1; 
-    if(range){ const p=range.replace('bytes=','').split('-'); s=parseInt(p[0]); e=p[1]?parseInt(p[1]):total-1; } 
-    if(s >=total||e >=total) return res.status(416).send('Range Not Satisfiable'); 
-    res.set({'Content-Type':file.mime,'Content-Length':e-s+1,'Accept-Ranges':'bytes','Content-Disposition': `inline; filename="${encodeURIComponent(file.name)}"` }); 
-    if(range){res.status(206);res.set('Content-Range', `bytes ${s}-${e}/${total}`);} 
-    let cur=0; 
-    for(const c of chunks){ 
-        const cs=cur, ce=cur+c.size-1; 
-        if(ce >=s && cs <=e){ 
-            const off=Math.max(0,s-cs), len=Math.min(c.size-off,e-Math.max(s,cs)+1); 
-            try{ 
-                const ck=`chunk:${file.id}:${c.chunk_index}`; 
-                let dec=fileCache.get(ck)?.data; 
-                if(!dec){ 
-                    const {data}=await axios.get(c.imgbb_url,{responseType:'arraybuffer',timeout:60000}); 
-                    const enc=await pngToBuffer(Buffer.from(data), c.size + OVERHEAD); 
-                    dec=decryptChunk(enc,key); 
-                    fileCache.set(ck,{data:dec,size:dec.length}); 
-                } 
-                const sl=dec.subarray(off,off+len); 
-                if(!res.write(sl)) await new Promise(r=>res.once('drain',r)); 
-            }catch(err){ console.error(`Stream chunk ${c.chunk_index}`,err); return res.destroy(err); } 
-        } 
-        cur+=c.size; 
-        if(cs >e) break; 
-    } 
-    res.end(); 
+// --- STREAM DOWNLOAD ---
+async function streamFile(res,file,key,range){
+    // ✅ CORRECTION : on utilise 'size' + OVERHEAD, plus la colonne encrypted_len (paddée)
+    const chunks=db.prepare('SELECT chunk_index,imgbb_url,size FROM file_chunks WHERE file_id=? ORDER BY chunk_index').all(file.id);
+    const total=file.size;
+    let s=0,e=total-1;
+    if(range){
+        const p=range.replace('bytes=','').split('-');
+        s=parseInt(p[0]);
+        e=p[1]?parseInt(p[1]):total-1;
+    }
+    if(s>=total||e>=total) return res.status(416).send('Range Not Satisfiable');
+    res.set({'Content-Type':file.mime,'Content-Length':e-s+1,'Accept-Ranges':'bytes','Content-Disposition':`inline; filename="${encodeURIComponent(file.name)}"`});
+    if(range){res.status(206);res.set('Content-Range',`bytes ${s}-${e}/${total}`);}
+    let cur=0;
+    for(const c of chunks){
+        const cs=cur, ce=cur+c.size-1;
+        if(ce>=s && cs<=e){
+            const off=Math.max(0,s-cs), len=Math.min(c.size-off,e-Math.max(s,cs)+1);
+            try{
+                const ck=`chunk:${file.id}:${c.chunk_index}`;
+                let dec=fileCache.get(ck)?.data;
+                if(!dec){
+                    const {data}=await axios.get(c.imgbb_url,{responseType:'arraybuffer',timeout:60000});
+                    const enc=await pngToBuffer(Buffer.from(data), c.size + OVERHEAD);
+                    dec=decryptChunk(enc,key);
+                    fileCache.set(ck,{data:dec,size:dec.length});
+                }
+                const sl=dec.subarray(off,off+len);
+                if(!res.write(sl)) await new Promise(r=>res.once('drain',r));
+            }catch(err){ console.error(`Stream chunk ${c.chunk_index}`,err); return res.destroy(err); }
+        }
+        cur+=c.size;
+        if(cs>e) break;
+    }
+    res.end();
 }
 
-const sseClients=new Map(); 
+// --- SSE ---
+const sseClients=new Map();
 function broadcast(fid,d){ const cs=sseClients.get(fid); if(cs){ const p=`data: ${JSON.stringify(d)}\n\n`; for(const r of cs) r.write(p); } }
 
 // ==========================================
 // ROUTES
 // ==========================================
+// Auth
 app.post('/api/register',async(req,res)=>{const{u,p,t}=req.body;if(!u||!p||!t)return res.status(400).json({error:'Champs manquants'});if(db.prepare('SELECT 1 FROM users WHERE username=?').get(u))return res.status(409).json({error:'Existe'});const s=randomBytes(16);const h=await deriveKey(p,s);db.prepare('INSERT INTO users(username,password_hash,salt,tos_accepted) VALUES(?,?,?,1)').run(u,h,s);res.json({ok:true});});
 app.post('/api/login',async(req,res)=>{const{u,p}=req.body;const usr=db.prepare('SELECT * FROM users WHERE username=?').get(u);if(!usr)return res.status(401).json({error:'Invalide'});const h=await deriveKey(p,usr.salt);if(!h.equals(usr.password_hash))return res.status(401).json({error:'Invalide'});req.session.userId=usr.id;req.session.isAdmin=!!usr.is_admin;req.session.tosAccepted=!!usr.tos_accepted;req.session.username=usr.username;res.json({ok:true,user:{id:usr.id,username:usr.username,isAdmin:!!usr.is_admin,tosAccepted:!!usr.tos_accepted}});});
-app.post('/api/logout', (req,res)=>req.session.destroy(()=>res.json({ok:true})));
+app.post('/api/logout',(req,res)=>req.session.destroy(()=>res.json({ok:true})));
 app.get('/api/me',(req,res)=>req.session.userId?res.json({id:req.session.userId,username:req.session.username,isAdmin:req.session.isAdmin,tosAccepted:req.session.tosAccepted}):res.status(401).json({error:'Non connecté'}));
 app.get('/api/tos',(_,res)=>res.send(`PIXELDRIVE CGU\n1. RESPONSABILITÉ TOTALE\n2. AUCUNE GARANTIE (Projet test)\n3. INTERDITS: Illégal, NSFW, Abus\n4. CHIFFRÉ AES-256-GCM + Filtre NSFW Local\n5. ACCEPTATION = Responsabilité légale`));
 app.post('/api/tos/accept',requireAuth,(req,res)=>{db.prepare('UPDATE users SET tos_accepted=1 WHERE id=?').run(req.session.userId);req.session.tosAccepted=true;res.json({ok:true});});
 
+// Folders
 app.get('/api/folders',requireAuth,(req,res)=>{const p=req.query.parent_id?parseInt(req.query.parent_id):null;res.json(db.prepare('SELECT * FROM folders WHERE owner_id=? AND parent_id IS ?').all(req.session.userId,p));});
 app.post('/api/folders',requireAuth,requireTos,(req,res)=>{const{n,p}=req.body;if(!n)return res.status(400).json({error:'Nom requis'});try{const i=db.prepare('INSERT INTO folders(name,parent_id,owner_id) VALUES(?,?,?)').run(n,p||null,req.session.userId);res.json({id:i.lastInsertRowid,name:n,parent_id:p});}catch(e){res.status(409).json({error:'Existe'});}});
 app.delete('/api/folders/:id',requireAuth,(req,res)=>{db.prepare('DELETE FROM folders WHERE id=? AND owner_id=?').run(req.params.id,req.session.userId);res.json({ok:true});});
 
+// Files
 app.get('/api/files',requireAuth,(req,res)=>{const f=req.query.folder_id?parseInt(req.query.folder_id):null;res.json(db.prepare('SELECT * FROM files WHERE owner_id=? AND folder_id IS ? ORDER BY name COLLATE NOCASE').all(req.session.userId,f));});
 
+// Upload
 const upload=multer({dest:TEMP_DIR,limits:{fileSize:5*1024*1024*1024}});
-app.post('/api/files/upload',requireAuth,requireTos,upload.single('file'),async(req,res)=>{if(!req.file)return res.status(400).json({error:'Fichier manquant'});const fid=uuidv4(),fpath=req.file.path,fsize=req.file.size,cc=Math.ceil(fsize/CHUNK_SIZE),mk=randomBytes(KEY_LEN),kh=createHash('sha256').update(mk).digest('hex'),mke=encryptMasterKey(mk),fidParam=req.body.folder_id?parseInt(req.body.folder_id):null;db.prepare(`INSERT INTO files(id,folder_id,owner_id,name,mime,size,chunk_count,status,encryption_key_hash,master_key_enc) VALUES(?,?,?,?,?,?,?,'pending',?,?)`).run(fid,fidParam,req.session.userId,req.file.originalname,req.file.mimetype,fsize,cc,kh,mke);const stmt=db.prepare('INSERT INTO file_chunks(file_id,chunk_index,size,encrypted_len) VALUES(?,?,?,?)');const tx=db.transaction((arr)=>{for(const c of arr)stmt.run(...c);});const cd=[];for(let i=0;i<cc;i++){const sz=Math.min(CHUNK_SIZE,fsize-i*CHUNK_SIZE);cd.push([fid,i,sz,sz+OVERHEAD]);}tx(cd);res.json({fileId:fid,status:'pending',chunkCount:cc});uploadQueue.add(()=>processUpload(fid,fpath,mk,cc,req.file.mimetype));});
+app.post('/api/files/upload',requireAuth,requireTos,upload.single('file'),async(req,res)=>{
+    if(!req.file)return res.status(400).json({error:'Fichier manquant'});
+    const fid=uuidv4(),fpath=req.file.path,fsize=req.file.size,cc=Math.ceil(fsize/CHUNK_SIZE),mk=randomBytes(KEY_LEN),kh=createHash('sha256').update(mk).digest('hex'),mke=encryptMasterKey(mk),fidParam=req.body.folder_id?parseInt(req.body.folder_id):null;
+    db.prepare(`INSERT INTO files(id,folder_id,owner_id,name,mime,size,chunk_count,status,encryption_key_hash,master_key_enc) VALUES(?,?,?,?,?,?,?,'pending',?,?)`).run(fid,fidParam,req.session.userId,req.file.originalname,req.file.mimetype,fsize,cc,kh,mke);
+    const stmt=db.prepare('INSERT INTO file_chunks(file_id,chunk_index,size,encrypted_len) VALUES(?,?,?,?)');
+    const tx=db.transaction((arr)=>{for(const c of arr)stmt.run(...c);});
+    const cd=[];
+    for(let i=0;i<cc;i++){const sz=Math.min(CHUNK_SIZE,fsize-i*CHUNK_SIZE);cd.push([fid,i,sz,sz+OVERHEAD]);} // ✅ encrypted_len = longueur exacte
+    tx(cd);
+    res.json({fileId:fid,status:'pending',chunkCount:cc});
+    uploadQueue.add(()=>processUpload(fid,fpath,mk,cc,req.file.mimetype));
+});
 
-async function processUpload(fid,path,mk,cc,mime){try{db.prepare("UPDATE files SET status='uploading' WHERE id=?").run(fid);for(let i=0;i<cc;i++){const off=i*CHUNK_SIZE;const ci=db.prepare('SELECT size,encrypted_len FROM file_chunks WHERE file_id=? AND chunk_index=?').get(fid,i);const raw=await readChunk(path,off,ci.size);const enc=encryptChunk(raw,mk);if(enc.length>ci.encrypted_len)throw new Error(`Overflow chunk ${i}`);const png=await bufferToPng(enc);const{url,deleteUrl,id}=await imgbbUpload(png);db.prepare('UPDATE file_chunks SET imgbb_url=?,imgbb_delete_url=?,imgbb_id=? WHERE file_id=? AND chunk_index=?').run(url,deleteUrl,id,fid,i);const prog=((i+1)/cc)*50;db.prepare('UPDATE files SET progress=?,status=? WHERE id=?').run(prog,'uploading',fid);broadcast(fid,{type:'progress',progress:prog,status:'uploading'});if(i<cc-1)await new Promise(r=>setTimeout(r,3200));}unlinkSync(path);db.prepare("UPDATE files SET status='processing',progress=50 WHERE id=?").run(fid);broadcast(fid,{type:'progress',progress:50,status:'processing'});await genThumb(fid,mime,mk);db.prepare("UPDATE files SET status='ready',progress=100 WHERE id=?").run(fid);broadcast(fid,{type:'progress',progress:100,status:'ready',type:'done'});}catch(e){console.error(`Upload ${fid}`,e);db.prepare("UPDATE files SET status='error',error_msg=? WHERE id=?").run(e.message,fid);broadcast(fid,{type:'error',error:e.message});const cs=db.prepare('SELECT imgbb_delete_url FROM file_chunks WHERE file_id=?').all(fid);for(const c of cs)if(c.imgbb_delete_url)await imgbbDelete(c.imgbb_delete_url);}}
+async function processUpload(fid,path,mk,cc,mime){
+    try{
+        db.prepare("UPDATE files SET status='uploading' WHERE id=?").run(fid);
+        for(let i=0;i<cc;i++){
+            const off=i*CHUNK_SIZE;
+            const ci=db.prepare('SELECT size,encrypted_len FROM file_chunks WHERE file_id=? AND chunk_index=?').get(fid,i);
+            const raw=await readChunk(path,off,ci.size);
+            const enc=encryptChunk(raw,mk);
+            if(enc.length>ci.encrypted_len)throw new Error(`Overflow chunk ${i}`);
+            const png=await bufferToPng(enc);
+            const{url,deleteUrl,id}=await imgbbUpload(png);
+            db.prepare('UPDATE file_chunks SET imgbb_url=?,imgbb_delete_url=?,imgbb_id=? WHERE file_id=? AND chunk_index=?').run(url,deleteUrl,id,fid,i);
+            const prog=((i+1)/cc)*50;
+            db.prepare('UPDATE files SET progress=?,status=? WHERE id=?').run(prog,'uploading',fid);
+            broadcast(fid,{type:'progress',progress:prog,status:'uploading'});
+            if(i<cc-1)await new Promise(r=>setTimeout(r,3200));
+        }
+        unlinkSync(path);
+        db.prepare("UPDATE files SET status='processing',progress=50 WHERE id=?").run(fid);
+        broadcast(fid,{type:'progress',progress:50,status:'processing'});
+        await genThumb(fid,mime,mk);
+        db.prepare("UPDATE files SET status='ready',progress=100 WHERE id=?").run(fid);
+        broadcast(fid,{type:'progress',progress:100,status:'ready',type:'done'});
+    }catch(e){
+        console.error(`Upload ${fid}`,e);
+        db.prepare("UPDATE files SET status='error',error_msg=? WHERE id=?").run(e.message,fid);
+        broadcast(fid,{type:'error',error:e.message});
+        const cs=db.prepare('SELECT imgbb_delete_url FROM file_chunks WHERE file_id=?').all(fid);
+        for(const c of cs)if(c.imgbb_delete_url)await imgbbDelete(c.imgbb_delete_url);
+    }
+}
 
 function readChunk(p,o,l){return new Promise((res,rej)=>{const s=createReadStream(p,{start:o,end:o+l-1}),c=[];s.on('data',d=>c.push(d)).on('end',()=>res(Buffer.concat(c,l))).on('error',rej);});}
 
+// Download
 app.get('/api/files/:id/download',requireAuth,async(req,res)=>{const f=db.prepare('SELECT * FROM files WHERE id=? AND owner_id=?').get(req.params.id,req.session.userId);if(!f)return res.status(404).json({error:'Introuvable'});if(f.status!=='ready')return res.status(409).json({error:'Pas prêt',status:f.status});const k=await getMasterKey(req.session.userId,f.id);await streamFile(res,f,k,req.headers.range);});
 
-// ✅ NOUVELLE ROUTE : Génère tous les liens de partage d'un coup
-app.post('/api/files/:id/share', requireAuth, async(req,res)=>{
+// ✅ NOUVELLE ROUTE : génère TOUS les liens de partage d'un coup (modale)
+app.post('/api/files/:id/share',requireAuth,async(req,res)=>{
     const f=db.prepare('SELECT * FROM files WHERE id=? AND owner_id=?').get(req.params.id,req.session.userId);
     if(!f||f.status!=='ready') return res.status(404).json({error:'Fichier non disponible'});
-    
-    const previewToken = uuidv4();
-    const downloadToken = uuidv4();
-    const expires = Date.now() + 7*24*3600000; // 7 jours
-    
-    // ✅ CORRECTION SQL : Utilisation de paramètres au lieu de guillemets doubles
-    db.prepare("INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)").run(previewToken, f.id, req.session.userId, 'embed', expires);
-    db.prepare("INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)").run(downloadToken, f.id, req.session.userId, 'download', expires);
-    
-    res.json({
-        preview: `/s/${previewToken}`,
-        download: `/d/${downloadToken}`,
-        expires: expires
-    });
+    const previewToken=uuidv4();
+    const downloadToken=uuidv4();
+    const expires=Date.now()+7*24*3600000; // 7 jours
+    // ✅ CORRECTION SQL : types passés en PARAMÈTRES (jamais de guillemets doubles = colonnes)
+    db.prepare('INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)').run(previewToken,f.id,req.session.userId,'embed',expires);
+    db.prepare('INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)').run(downloadToken,f.id,req.session.userId,'download',expires);
+    res.json({preview:`/s/${previewToken}`,download:`/d/${downloadToken}`,expires:expires});
 });
 
-// Ancienne route preview conservée pour compatibilité
+// Preview (compatibilité)
 app.get('/api/files/:id/preview',requireAuth,async(req,res)=>{
     const f=db.prepare('SELECT * FROM files WHERE id=? AND owner_id=?').get(req.params.id,req.session.userId);
     if(!f||f.status!=='ready')return res.status(404).json({error:'Pas prêt'});
+    if(!f.mime.startsWith('image/')&&!f.mime.startsWith('video/')&&!f.mime.startsWith('audio/')&&f.mime!=='application/pdf')return res.status(400).json({error:'Type non prévisualisable'});
     const t=uuidv4();
-    db.prepare("INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)").run(t,f.id,req.session.userId,'embed',Date.now()+3600000);
+    db.prepare('INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)').run(t,f.id,req.session.userId,'embed',Date.now()+3600000);
     res.json({url:`/s/${t}`});
 });
 
-// ✅ CORRECTION SQL : WHERE type='embed' avec paramètre
+// Public Embed
 app.get('/s/:token',async(req,res)=>{
     const l=db.prepare('SELECT * FROM share_links WHERE token=? AND type=? AND (expires_at IS NULL OR expires_at>?)').get(req.params.token,'embed',Date.now());
     if(!l)return res.status(404).send(html('Lien invalide/expiré'));
     const f=db.prepare('SELECT * FROM files WHERE id=?').get(l.file_id);
     if(!f)return res.status(404).send(html('Fichier supprimé'));
     const dt=uuidv4();
-    db.prepare("INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)").run(dt,f.id,l.owner_id,'download',Date.now()+3600000);
+    db.prepare('INSERT INTO share_links(token,file_id,owner_id,type,expires_at) VALUES(?,?,?,?,?)').run(dt,f.id,l.owner_id,'download',Date.now()+3600000);
     const v=f.mime.startsWith('video/'),a=f.mime.startsWith('audio/'),i=f.mime.startsWith('image/'),p=f.mime==='application/pdf';
     res.send(html(`<title>${f.name}</title><style>body{margin:0;background:#000;color:#fff;display:flex;align-items:center;justify-content:center;height:100vh;font-family:sans-serif;overflow:hidden}.wrap{max-width:90vw;max-height:90vh;text-align:center}video,audio{max-width:100%;max-height:80vh;background:#111}img{max-width:100%;max-height:80vh}.info{margin-top:1rem;opacity:.8}a{color:#4da3ff}</style><div class="wrap">${v?`<video controls autoplay playsinline src="/d/${dt}"></video>`:''}${a?`<audio controls src="/d/${dt}"></audio>`:''}${i?`<img src="/d/${dt}" alt="${f.name}">`:''}${p?`<iframe src="/d/${dt}" style="width:100%;height:80vh;border:none"></iframe>`:''}<div class="info">${f.name} • ${(f.size/1e6).toFixed(1)} MB • <a href="/d/${dt}" download>Télécharger</a></div></div>`));
 });
 
-// ✅ CORRECTION SQL : WHERE type='download' avec paramètre
+// Public Download
 app.get('/d/:token',async(req,res)=>{
     const l=db.prepare('SELECT * FROM share_links WHERE token=? AND type=? AND (expires_at IS NULL OR expires_at>?)').get(req.params.token,'download',Date.now());
     if(!l)return res.status(404).json({error:'Invalide'});
@@ -299,18 +494,28 @@ app.get('/d/:token',async(req,res)=>{
     await streamFile(res,f,mk,req.headers.range);
 });
 
+// Delete
 app.delete('/api/files/:id',requireAuth,async(req,res)=>{const f=db.prepare('SELECT * FROM files WHERE id=? AND owner_id=?').get(req.params.id,req.session.userId);if(!f)return res.status(404).json({error:'Introuvable'});const cs=db.prepare('SELECT imgbb_delete_url FROM file_chunks WHERE file_id=?').all(f.id);for(const c of cs)if(c.imgbb_delete_url)await imgbbDelete(c.imgbb_delete_url);db.prepare('DELETE FROM files WHERE id=?').run(f.id);fileCache.delete(`chunk:${f.id}:0`);try{unlinkSync(join(THUMB_DIR,`${f.id}.jpg`));}catch(_){}res.json({ok:true});});
 
+// Thumb
 app.get('/api/files/:id/thumb',requireAuth,(req,res)=>{const p=join(THUMB_DIR,`${req.params.id}.jpg`);if(existsSync(p))return res.sendFile(p);res.set('Content-Type','image/svg+xml');res.send(`<svg xmlns="http://www.w3.org/2000/svg" width="256" height="144"><rect fill="#2a2a3e" width="100%" height="100%"/><text x="50%" y="50%" dominant-baseline="middle" text-anchor="middle" fill="#666" font-family="sans-serif" font-size="16">FILE</text></svg>`);});
 
+// SSE
 app.get('/api/files/:id/progress',requireAuth,(req,res)=>{res.set({'Content-Type':'text/event-stream','Cache-Control':'no-cache','Connection':'keep-alive'});res.flushHeaders();const id=req.params.id;if(!sseClients.has(id))sseClients.set(id,new Set());sseClients.get(id).add(res);req.on('close',()=>sseClients.get(id)?.delete(res));});
 
+// Admin
 app.get('/api/admin/users',requireAuth,(req,res)=>{if(!req.session.isAdmin)return res.status(403).json({error:'Admin only'});res.json(db.prepare('SELECT id,username,is_admin,tos_accepted,created_at FROM users').all());});
+
+// Health
 app.get('/health',(_,res)=>res.json({ok:true,cache:fileCache.size,mem:process.memoryUsage()}));
 
+// SPA
 app.use(express.static(__dirname));
 app.get('*',(_,res)=>res.sendFile(join(__dirname,'public.html')));
 
+// ==========================================
+// START
+// ==========================================
 const server=app.listen(PORT,'0.0.0.0',()=>console.log(`🚀 PixelDrive v3.2 on http://0.0.0.0:${PORT} | Cache: 12GB LRU`));
 process.on('SIGTERM',()=>{console.log('SIGTERM');server.close(()=>process.exit(0));});