feat(handlers): Get data from db Methods

Added all methods from fronted documentation whitch needs

db/handlers/catigory_handler.py

@@ -1,23 +1,113 @@
 import sqlite3
-from module.category import Category
+from typing import List, Dict, Any, Optional
+from loguru import logger as log
 
-def GetAllCategories(db_name: str = 'pipe_store.db', parent_id: int = 1) -> list[Category]:
+def get_all_categories_with_attributes(db_name: str = 'pipe_store.db') -> List[Dict[str, Any]]:
     conn = sqlite3.connect(db_name)
     conn.row_factory = sqlite3.Row
     cursor = conn.cursor()
+    
+    try:
+        # Получаем все категории (только основные, без parent_id)
+        cursor.execute("""
+            SELECT id, name, image_path 
+            FROM categories 
+            WHERE parent_id IS NULL OR parent_id = 1
+            ORDER BY id
+        """)
+        
+        categories = []
+        
+        for cat_row in cursor.fetchall():
+            category_id = cat_row['id']
+            
+            # Получаем все фильтры для товаров в этой категории
+            cursor.execute("""
+                SELECT DISTINCT f.id, f.name, f.filter_key
+                FROM filters f
+                WHERE f.filter_key IN (
+                    SELECT DISTINCT pf.filter_key 
+                    FROM product_filters pf
+                    JOIN products p ON pf.product_id = p.id
+                    WHERE p.category_id = ?
+                )
+                ORDER BY f.id
+            """, (category_id,))
+            
+            attributes = []
+            
+            for filter_row in cursor.fetchall():
+                filter_id = filter_row['id']
+                filter_key = filter_row['filter_key']
+                filter_name = filter_row['name']
+                
+                # Получаем уникальные значения для этого фильтра
+                cursor.execute("""
+                    SELECT DISTINCT pf.value, COUNT(*) as count
+                    FROM product_filters pf
+                    JOIN products p ON pf.product_id = p.id
+                    WHERE p.category_id = ? AND pf.filter_key = ?
+                    GROUP BY pf.value
+                    ORDER BY pf.value
+                """, (category_id, filter_key))
+                
+                vals = []
+                for val_row in cursor.fetchall():
+                    # Генерируем уникальный ID для значения
+                    val_id = hash(f"{category_id}_{filter_key}_{val_row['value']}") % 1000000
+                    vals.append({
+                        "id": val_id,
+                        "val": val_row['value']
+                    })
+                
+                if vals:  # Добавляем только если есть значения
+                    attributes.append({
+                        "id": filter_id,
+                        "name": filter_name,
+                        "vals": vals
+                    })
+            
+            categories.append({
+                "id": category_id,
+                "name": cat_row['name'],
+                "image": cat_row['image_path'] or f"/images/categories/{cat_row['name'].lower().replace(' ', '_')}.jpg",
+                "atributes": attributes
+            })
+        
+        return categories
+        
+    except sqlite3.Error as e:
+        log.error(f"Ошибка при получении категорий: {e}")
+        return []
+    finally:
+        conn.close()
 
-    categories = []
-
-    cursor.execute("SELECT id, name, description, image_path FROM categories WHERE parent_id = ?", [parent_id])
-
-    for row in cursor.fetchall():
-        category = Category(
-            id = row["id"],
-            name = row["name"],
-            description= row["description"],
-            image_path= row["image_path"],
-        )
-        categories.append(category.model_dump())
-
-    conn.close()
-    return categories
+def get_category_by_id(category_id: int, db_name: str = 'pipe_store.db') -> Optional[Dict[str, Any]]:
+    """Получить категорию по ID"""
+    conn = sqlite3.connect(db_name)
+    conn.row_factory = sqlite3.Row
+    cursor = conn.cursor()
+    
+    try:
+        cursor.execute("""
+            SELECT id, name, description, image_path, parent_id
+            FROM categories 
+            WHERE id = ?
+        """, (category_id,))
+        
+        row = cursor.fetchone()
+        if row:
+            return {
+                "id": row['id'],
+                "name": row['name'],
+                "description": row['description'],
+                "image": row['image_path'],
+                "parent_id": row['parent_id']
+            }
+        return None
+        
+    except sqlite3.Error as e:
+        log.error(f"Ошибка при получении категории {category_id}: {e}")
+        return None
+    finally:
+        conn.close()

db/handlers/product_handler.py

@@ -1,11 +1,259 @@
 import sqlite3
-from module.product import Product
+from typing import List, Dict, Any, Optional, Tuple
+from loguru import logger as log
 
-def get_products(db_name: str = 'pipe_store.db', parent_id: int = 1) -> List[Product]:
+def get_products_with_filters(
+    category_id: int,
+    page: int = 1,
+    limit: int = 9,
+    filters: Dict[str, Any] = None,
+    db_name: str = 'pipe_store.db'
+) -> Dict[str, Any]:
     conn = sqlite3.connect(db_name)
     conn.row_factory = sqlite3.Row
-    transaction = conn.cursor()
+    cursor = conn.cursor()
+    
+    try:
+        # Базовый запрос для получения товаров
+        base_query = """
+            SELECT DISTINCT p.id, p.name, p.full_name, p.description, 
+                   p.diameter, p.wall_thickness, p.length, p.color,
+                   p.application_type, p.stiffness_class, p.image_path,
+                   p.created_at
+            FROM products p
+            WHERE p.category_id = ?
+        """
+        
+        params = [category_id]
+        
+        # Применяем фильтры
+        if filters:
+            for filter_key, filter_value in filters.items():
+                if filter_value:
+                    if isinstance(filter_value, list):
+                        # Для множественных значений
+                        placeholders = ','.join(['?' for _ in filter_value])
+                        base_query += f"""
+                            AND p.id IN (
+                                SELECT DISTINCT pf.product_id 
+                                FROM product_filters pf 
+                                WHERE pf.filter_key = ? 
+                                AND pf.value IN ({placeholders})
+                            )
+                        """
+                        params.append(filter_key)
+                        params.extend(filter_value)
+                    else:
+                        # Для одиночных значений
+                        base_query += """
+                            AND p.id IN (
+                                SELECT DISTINCT pf.product_id 
+                                FROM product_filters pf 
+                                WHERE pf.filter_key = ? AND pf.value = ?
+                            )
+                        """
+                        params.append(filter_key)
+                        params.append(filter_value)
+        
+        # Получаем общее количество товаров
+        count_query = f"SELECT COUNT(*) as total FROM ({base_query})"
+        cursor.execute(count_query, params)
+        total = cursor.fetchone()['total']
+        
+        # Добавляем пагинацию
+        offset = (page - 1) * limit
+        paginated_query = f"""
+            {base_query}
+            ORDER BY p.id
+            LIMIT ? OFFSET ?
+        """
+        params.extend([limit, offset])
+        
+        cursor.execute(paginated_query, params)
+        
+        # Формируем результат
+        items = []
+        for row in cursor.fetchall():
+            # Формируем атрибуты товара
+            attributes = {}
+            
+            # Добавляем все возможные атрибуты
+            if row['color']:
+                attributes['color'] = row['color']
+            if row['length']:
+                attributes['size'] = f"{row['diameter']}x{row['wall_thickness']}x{row['length']}" if row['diameter'] else str(row['length'])
+            if row['diameter']:
+                attributes['diameter'] = str(row['diameter'])
+            if row['wall_thickness']:
+                attributes['wall_thickness'] = str(row['wall_thickness'])
+            if row['stiffness_class']:
+                attributes['stiffness_class'] = row['stiffness_class']
+            if row['application_type']:
+                attributes['application_type'] = row['application_type']
+            
+            # Определяем количество в упаковке (можно вынести в отдельную таблицу)
+            attributes['amount'] = get_pack_amount(row['id'], conn)
+            
+            items.append({
+                "id": row['id'],
+                "name": row['name'],
+                "description": row['description'] or f"Труба ПВХ {row['diameter']}мм",
+                "price": calculate_price(row),  # Функция для расчета цены
+                "categoryId": category_id,
+                "images": get_product_images(row['id'], row['image_path'], conn),
+                "attributes": attributes,
+                "inStock": check_stock(row['id'], conn)  # Проверка наличия
+            })
+        
+        return {
+            "items": items,
+            "total": total,
+            "page": page,
+            "limit": limit,
+            "total_pages": (total + limit - 1) // limit
+        }
+        
+    except sqlite3.Error as e:
+        log.error(f"Ошибка при получении товаров: {e}")
+        return {"items": [], "total": 0, "page": page, "limit": limit}
+    finally:
+        conn.close()
 
-    products = []
+def get_product_by_id(product_id: int, db_name: str = 'pipe_store.db') -> Optional[Dict[str, Any]]:
+    """
+    Получить товар по ID с полной информацией
+    
+    Args:
+        product_id: ID товара
+        db_name: Имя базы данных
+    
+    Returns:
+        Dict с полной информацией о товаре или None
+    """
+    conn = sqlite3.connect(db_name)
+    conn.row_factory = sqlite3.Row
+    cursor = conn.cursor()
+    
+    try:
+        cursor.execute("""
+            SELECT p.id, p.name, p.full_name, p.description, 
+                   p.diameter, p.wall_thickness, p.length, p.color,
+                   p.application_type, p.stiffness_class, p.image_path,
+                   p.created_at, p.category_id
+            FROM products p
+            WHERE p.id = ?
+        """, (product_id,))
+        
+        row = cursor.fetchone()
+        if not row:
+            return None
+        
+        # Получаем все изображения товара (если есть несколько)
+        images = get_product_images(product_id, row['image_path'], conn)
+        
+        # Формируем полное описание
+        full_description = generate_full_description(row)
+        
+        return {
+            "id": row['id'],
+            "name": row['name'],
+            "full_name": row['full_name'],
+            "description": full_description,
+            "price": calculate_price(row),
+            "categoryId": row['category_id'],
+            "images": images,
+            "attributes": {
+                "color": row['color'],
+                "diameter": str(row['diameter']) if row['diameter'] else None,
+                "wall_thickness": str(row['wall_thickness']) if row['wall_thickness'] else None,
+                "length": str(row['length']) if row['length'] else None,
+                "stiffness_class": row['stiffness_class'],
+                "application_type": row['application_type'],
+                "size": f"{row['diameter']}x{row['wall_thickness']}x{row['length']}" if all([row['diameter'], row['wall_thickness'], row['length']]) else None
+            },
+            "inStock": check_stock(product_id, conn),
+            "created_at": row['created_at']
+        }
+        
+    except sqlite3.Error as e:
+        log.error(f"Ошибка при получении товара {product_id}: {e}")
+        return None
+    finally:
+        conn.close()
 
-    transaction.execute("SELECT ... FROM products")
+def get_product_images(product_id: int, main_image: Optional[str], conn: sqlite3.Connection) -> List[str]:
+    """
+    Получить список изображений товара
+    (В текущей структуре только одно изображение, но можно расширить)
+    """
+    images = []
+    if main_image:
+        images.append(main_image)
+    
+    # Здесь можно добавить логику для получения дополнительных изображений
+    # Например, из отдельной таблицы product_images
+    
+    # Если нет изображения, возвращаем заглушку
+    if not images:
+        images.append("/images/products/default.jpg")
+    
+    return images
+
+def calculate_price(row: sqlite3.Row) -> float:
+    """
+    Рассчитать цену товара на основе параметров
+    (В реальном проекте цена должна быть в базе данных)
+    """
+    # Временная логика расчета цены
+    base_price = 500
+    
+    if row['diameter']:
+        base_price += (row['diameter'] - 50) * 5
+    
+    if row['length']:
+        base_price += row['length'] * 0.1
+    
+    if row['stiffness_class'] == 'SN4':
+        base_price *= 1.2
+    
+    return round(base_price, 2)
+
+def check_stock(product_id: int, conn: sqlite3.Connection) -> bool:
+    """
+    Проверить наличие товара на складе
+    (В реальном проекте должна быть таблица stock)
+    """
+    # Временная логика - все товары в наличии
+    return True
+
+def get_pack_amount(product_id: int, conn: sqlite3.Connection) -> str:
+    """
+    Получить количество в упаковке
+    (В реальном проекте должно быть в базе данных)
+    """
+    # Временная логика
+    return "4"
+
+def generate_full_description(row: sqlite3.Row) -> str:
+    """Сгенерировать полное описание товара"""
+    parts = []
+    
+    if row['full_name']:
+        parts.append(row['full_name'])
+    
+    if row['description']:
+        parts.append(row['description'])
+    
+    if row['application_type']:
+        parts.append(f"Тип применения: {row['application_type']} канализация")
+    
+    if row['diameter'] and row['wall_thickness'] and row['length']:
+        parts.append(f"Размеры: {row['diameter']}x{row['wall_thickness']}x{row['length']} мм")
+    
+    if row['stiffness_class']:
+        parts.append(f"Класс жесткости: {row['stiffness_class']}")
+    
+    if row['color']:
+        parts.append(f"Цвет: {row['color']}")
+    
+    return " ".join(parts)