initial

backend/routes/categories.py

@@ -0,0 +1,91 @@
+from flask import Blueprint, request, jsonify
+from backend.models import db, Category
+
+bp = Blueprint('categories', __name__, url_prefix='/api/categories')
+
+
+@bp.route('', methods=['GET'])
+def list_categories():
+    """Get all categories"""
+    categories = Category.query.order_by(Category.name).all()
+    return jsonify([c.to_dict() for c in categories]), 200
+
+
+@bp.route('/<int:category_id>', methods=['GET'])
+def get_category(category_id):
+    """Get a single category by ID"""
+    category = Category.query.get_or_404(category_id)
+    return jsonify(category.to_dict()), 200
+
+
+@bp.route('', methods=['POST'])
+def create_category():
+    """Create a new category"""
+    data = request.get_json()
+    if not data:
+        return jsonify({'error': 'No data provided'}), 400
+
+    name = data.get('name', '').strip()
+    if not name:
+        return jsonify({'error': 'Category name is required'}), 400
+
+    # Check if category already exists
+    existing = Category.query.filter_by(name=name).first()
+    if existing:
+        return jsonify({'error': 'Category already exists'}), 409
+
+    try:
+        category = Category(name=name)
+        db.session.add(category)
+        db.session.commit()
+
+        return jsonify(category.to_dict()), 201
+
+    except Exception as e:
+        db.session.rollback()
+        return jsonify({'error': str(e)}), 500
+
+
+@bp.route('/<int:category_id>', methods=['PUT'])
+def update_category(category_id):
+    """Update an existing category"""
+    category = Category.query.get_or_404(category_id)
+    data = request.get_json()
+
+    if not data:
+        return jsonify({'error': 'No data provided'}), 400
+
+    name = data.get('name', '').strip()
+    if not name:
+        return jsonify({'error': 'Category name is required'}), 400
+
+    # Check if another category with this name exists
+    existing = Category.query.filter(Category.name == name, Category.id != category_id).first()
+    if existing:
+        return jsonify({'error': 'Category already exists'}), 409
+
+    try:
+        category.name = name
+        db.session.commit()
+
+        return jsonify(category.to_dict()), 200
+
+    except Exception as e:
+        db.session.rollback()
+        return jsonify({'error': str(e)}), 500
+
+
+@bp.route('/<int:category_id>', methods=['DELETE'])
+def delete_category(category_id):
+    """Delete a category"""
+    category = Category.query.get_or_404(category_id)
+
+    try:
+        db.session.delete(category)
+        db.session.commit()
+
+        return jsonify({'message': 'Category deleted successfully'}), 200
+
+    except Exception as e:
+        db.session.rollback()
+        return jsonify({'error': str(e)}), 500