support articles

models.py

@@ -537,4 +537,53 @@ class Instance(db.Model):
     updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP'), onupdate=db.text('CURRENT_TIMESTAMP'))
 
     def __repr__(self):
-        return f'<Instance {self.name}>' 
+        return f'<Instance {self.name}>'
+
+class HelpArticle(db.Model):
+    __tablename__ = 'help_articles'
+    id = db.Column(db.Integer, primary_key=True)
+    title = db.Column(db.String(200), nullable=False)
+    category = db.Column(db.String(50), nullable=False)  # getting-started, user-management, file-management, communication, security, administration
+    body = db.Column(db.Text, nullable=False)  # Rich text content
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    created_by = db.Column(db.Integer, db.ForeignKey('user.id', ondelete='CASCADE'), nullable=False)
+    is_published = db.Column(db.Boolean, default=True)
+    order_index = db.Column(db.Integer, default=0)  # For ordering articles within categories
+    
+    # Relationships
+    creator = db.relationship('User', backref=db.backref('created_help_articles', cascade='all, delete-orphan'), foreign_keys=[created_by])
+
+    def __repr__(self):
+        return f'<HelpArticle {self.title} ({self.category})>'
+
+    @classmethod
+    def get_categories(cls):
+        """Get all available categories with their display names"""
+        return {
+            'getting-started': 'Getting Started',
+            'user-management': 'User Management', 
+            'file-management': 'File Management',
+            'communication': 'Communication',
+            'security': 'Security & Privacy',
+            'administration': 'Administration'
+        }
+
+    @classmethod
+    def get_articles_by_category(cls, category, published_only=True):
+        """Get articles for a specific category"""
+        query = cls.query.filter_by(category=category)
+        if published_only:
+            query = query.filter_by(is_published=True)
+        return query.order_by(cls.order_index.asc(), cls.created_at.desc()).all()
+
+    @classmethod
+    def get_all_published(cls):
+        """Get all published articles grouped by category"""
+        articles = cls.query.filter_by(is_published=True).order_by(cls.order_index.asc(), cls.created_at.desc()).all()
+        grouped = {}
+        for article in articles:
+            if article.category not in grouped:
+                grouped[article.category] = []
+            grouped[article.category].append(article)
+        return grouped