Add user auth, personal cabinet, admin panel and first admin bootstrap

Co-authored-by: Cursor <cursoragent@cursor.com>

app/models.py

@@ -0,0 +1,72 @@
+from datetime import datetime, timezone
+
+from flask_login import UserMixin
+from werkzeug.security import check_password_hash, generate_password_hash
+
+from app import db
+
+
+class User(UserMixin, db.Model):
+    __tablename__ = "users"
+
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(80), unique=True, nullable=False, index=True)
+    email = db.Column(db.String(120), unique=True, nullable=False, index=True)
+    password_hash = db.Column(db.String(256), nullable=False)
+    is_admin = db.Column(db.Boolean, nullable=False, default=False)
+    is_active = db.Column(db.Boolean, nullable=False, default=True)
+    created_at = db.Column(
+        db.DateTime,
+        nullable=False,
+        default=lambda: datetime.now(timezone.utc),
+    )
+
+    photos = db.relationship("Photo", backref="owner", lazy="dynamic")
+
+    def set_password(self, password):
+        self.password_hash = generate_password_hash(password)
+
+    def check_password(self, password):
+        return check_password_hash(self.password_hash, password)
+
+    @property
+    def photo_count(self):
+        return self.photos.count()
+
+    @property
+    def total_size(self):
+        from sqlalchemy import func
+
+        result = db.session.query(func.coalesce(func.sum(Photo.file_size), 0)).filter(
+            Photo.user_id == self.id
+        ).scalar()
+        return int(result or 0)
+
+
+class Photo(db.Model):
+    __tablename__ = "photos"
+
+    id = db.Column(db.Integer, primary_key=True)
+    filename = db.Column(db.String(255), nullable=False)
+    original_name = db.Column(db.String(255), nullable=False)
+    file_size = db.Column(db.Integer, nullable=False, default=0)
+    mime_type = db.Column(db.String(100), nullable=False, default="image/jpeg")
+    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=True, index=True)
+    created_at = db.Column(
+        db.DateTime,
+        nullable=False,
+        default=lambda: datetime.now(timezone.utc),
+    )
+
+    @property
+    def url(self):
+        return f"/uploads/{self.filename}"
+
+    @property
+    def size_human(self):
+        size = self.file_size
+        for unit in ("Б", "КБ", "МБ", "ГБ"):
+            if size < 1024:
+                return f"{size:.0f} {unit}" if unit == "Б" else f"{size:.1f} {unit}"
+            size /= 1024
+        return f"{size:.1f} ТБ"