第一次提交

app/services/product_service.py

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+"""
+Product业务逻辑服务层
+"""
+from typing import Optional, Tuple, List
+from flask import current_app
+from sqlalchemy import func, or_
+from app import db
+from app.models import Product, Version
+from app.utils.logger import log_operation
+
+
+class ProductService:
+    """产品业务逻辑服务"""
+
+    @staticmethod
+    def get_products(
+        page: int = 1,
+        per_page: int = 20,
+        keyword: str = '',
+        product_type: Optional[str] = None,
+        is_paid: Optional[int] = None
+    ) -> Tuple[List[Product], int]:
+        """
+        获取产品列表
+        :param page: 页码
+        :param per_page: 每页数量
+        :param keyword: 关键词
+        :param product_type: 产品类型
+        :param is_paid: 是否付费
+        :return: (产品列表, 总数)
+        """
+        query = Product.query.filter_by(status=1)  # 只显示启用的产品
+
+        # 关键词搜索
+        if keyword:
+            escaped_keyword = keyword.replace('%', '\\%').replace('_', '\\_')
+            pattern = f'%{escaped_keyword}%'
+            query = query.filter(
+                or_(
+                    Product.product_name.like(pattern, escape='\\'),
+                    Product.description.like(pattern, escape='\\')
+                )
+            )
+
+        # 筛选条件
+        if product_type:
+            query = query.filter(Product.product_type == product_type)
+
+        query = query.order_by(Product.create_time.desc())
+
+        # 分页
+        pagination = query.paginate(page=page, per_page=per_page, error_out=False)
+        return pagination.items, pagination.total
+
+    @staticmethod
+    def get_product(product_id: str) -> Optional[Product]:
+        """
+        获取产品详情
+        :param product_id: 产品ID
+        :return: 产品对象
+        """
+        return Product.query.filter_by(product_id=product_id, status=1).first()
+
+    @staticmethod
+    def get_latest_version(product_id: str) -> Optional[Version]:
+        """
+        获取产品最新版本
+        :param product_id: 产品ID
+        :return: 版本对象
+        """
+        return Version.query.filter_by(
+            product_id=product_id,
+            publish_status=1
+        ).order_by(Version.update_time.desc(), Version.create_time.desc()).first()