from ddms_compliance_suite.test_framework_core import BaseAPITestCase, ValidationResult, APIResponseContext, APIRequestContext, TestSeverity
from typing import Dict, Any, List, Optional
import re

class PaginationParamsCheckTestCase(BaseAPITestCase):
    """
    检查API请求中是否包含标准分页参数：pageNo、pageSize和isSearchCount
    只有名称含有"查询"一类，并且不含有"详情"一类的API才应用这个验证
    """
    id = "TC-DMS-PAGINATION-001"
    name = "分页参数检查"
    description = "检查API请求参数中是否包含标准分页参数：pageNo、pageSize和isSearchCount。只有名称含有'查询'、'列表'等并且不含有'详情'一类的API才应用此验证。"
    severity = TestSeverity.MEDIUM
    tags = ["pagination", "params", "backend-guide"]
    
    # 这个测试用例不需要发送实际请求
    skip_execution = True
    
    @classmethod
    def applies_to(cls, endpoint_spec: Dict[str, Any], **kwargs) -> bool:
        """
        此测试用例仅适用于满足以下条件的端点：
        1. 是GET或POST方法。
        2. API描述中包含分页相关的关键词（如'查询', '列表'）。
        3. API描述中不包含排除的关键词（如'详情'）。
        """
        path = endpoint_spec.get('path', '')
        method = endpoint_spec.get('method', '').lower()
        
        if method not in ['get', 'post']:
            return False

        summary = endpoint_spec.get('summary', '')
        description = endpoint_spec.get('description', '')
        operation_id = endpoint_spec.get('operationId', '')
        
        include_keywords = ["查询", "列表", "分页", "page", "list", "query", "search", "find"]
        exclude_keywords = ["详情", "明细", "detail", "info", "get", "查看"]
        
        api_description_text = f"{summary} {description} {operation_id} {path}".lower()
        
        contains_include_keyword = any(keyword.lower() in api_description_text for keyword in include_keywords)
        contains_exclude_keyword = any(keyword.lower() in api_description_text for keyword in exclude_keywords)
        
        return contains_include_keyword and not contains_exclude_keyword

    def __init__(self, endpoint_spec: Dict[str, Any], global_api_spec: Dict[str, Any], json_schema_validator: Optional[Any] = None, llm_service: Optional[Any] = None):
        super().__init__(endpoint_spec, global_api_spec, json_schema_validator, llm_service=llm_service)
    
    def validate_response(self, response_context: APIResponseContext, request_context: APIRequestContext) -> List[ValidationResult]:
        """
        检查API请求中是否包含标准分页参数
        """
        results = []
        path = self.endpoint_spec.get('path', '')
        method = self.endpoint_spec.get('method', '').lower()
            
        # 初始化检查结果
        found_page_no = False
        found_page_size = False
        found_is_search_count = False
        
        # 检查查询参数
        parameters = self.endpoint_spec.get('parameters', [])
        for param in parameters:
            param_name = param.get('name', '')
            param_in = param.get('in', '')
            
            if param_in == 'query':
                if param_name == 'pageNo':
                    found_page_no = True
                elif param_name == 'pageSize':
                    found_page_size = True
                elif param_name == 'isSearchCount':
                    found_is_search_count = True
        
        # 检查请求体（如果是POST请求）
        if method == 'post':
            request_body = self.endpoint_spec.get('requestBody', {})
            content = request_body.get('content', {})
            
            for media_type, media_content in content.items():
                if 'schema' in media_content:
                    schema = self._get_resolved_schema(media_content['schema'])
                    if 'properties' in schema:
                        properties = schema['properties']
                        
                        # 检查请求体属性
                        if 'pageNo' in properties:
                            found_page_no = True
                        
                        if 'pageSize' in properties:
                            found_page_size = True
                        
                        if 'isSearchCount' in properties:
                            found_is_search_count = True
        
        # 汇总检查结果
        if found_page_no and found_page_size and found_is_search_count:
            results.append(self.passed(
                message=f"API请求包含所有标准分页参数：pageNo、pageSize和isSearchCount",
                details={"path": path, "method": method.upper()}
            ))
        else:
            # 计算缺失的参数
            missing_params = []
            if not found_page_no:
                missing_params.append("pageNo")
            if not found_page_size:
                missing_params.append("pageSize")
            if not found_is_search_count:
                missing_params.append("isSearchCount")
            
            if missing_params:
                results.append(self.failed(
                    message=f"API请求缺少标准分页参数：{', '.join(missing_params)}",
                    details={
                        "path": path, 
                        "method": method.upper(),
                        "missing_params": missing_params,
                        "found_params": {
                            "pageNo": found_page_no,
                            "pageSize": found_page_size,
                            "isSearchCount": found_is_search_count
                        }
                    }
                ))
        
        return results