package service

import (
	"fmt"
	"gofaster/internal/auth/repository"
	"reflect"
	"strings"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

// EnhancedRouteSyncService 增强版路由同步服务
type EnhancedRouteSyncService struct {
	*RouteSyncService
}

// NewEnhancedRouteSyncService 创建增强版路由同步服务
func NewEnhancedRouteSyncService(
	routeMappingRepo *repository.RouteMappingRepository,
	resourceRepo repository.ResourceRepository,
	log *zap.Logger,
) *EnhancedRouteSyncService {
	return &EnhancedRouteSyncService{
		RouteSyncService: NewRouteSyncService(routeMappingRepo, resourceRepo, log),
	}
}

// generateDescriptionFromSwagger 从Swagger注释中生成描述
func (s *EnhancedRouteSyncService) generateDescriptionFromSwagger(method, path string, handler interface{}) string {
	// 使用反射获取handler的注释信息
	handlerType := reflect.TypeOf(handler)
	if handlerType == nil {
		return s.generateDescription(method, path)
	}

	// 尝试从方法注释中提取@Summary信息
	// 这里需要结合AST解析来获取注释，暂时使用简化版本
	return s.generateDescription(method, path)
}

// generateEnhancedDescription 生成增强版描述
func (s *EnhancedRouteSyncService) generateEnhancedDescription(method, path string) string {
	// 定义更详细的描述映射
	pathDescriptions := map[string]string{
		"/auth/login":             "用户登录",
		"/auth/logout":            "用户登出",
		"/auth/captcha":           "获取验证码",
		"/auth/userinfo":          "获取用户信息",
		"/auth/change-password":   "修改密码",
		"/auth/password-policy":   "获取密码策略",
		"/auth/validate-password": "验证密码强度",
		"/auth/admin/users":       "用户管理",
		"/auth/admin/users/:id":   "用户详情操作",
		"/auth/roles":             "角色管理",
		"/auth/roles/:id":         "角色详情操作",
		"/auth/permissions":       "权限管理",
		"/auth/permissions/:id":   "权限详情操作",
		"/auth/resources":         "资源管理",
		"/auth/resources/:id":     "资源详情操作",
	}

	// 先尝试精确匹配
	if desc, exists := pathDescriptions[path]; exists {
		return desc
	}

	// 尝试模式匹配
	for pattern, desc := range pathDescriptions {
		if strings.Contains(path, strings.TrimSuffix(pattern, "/:id")) {
			switch method {
			case "GET":
				if strings.Contains(path, "/:id") {
					return fmt.Sprintf("获取%s详情", desc)
				}
				return fmt.Sprintf("获取%s列表", desc)
			case "POST":
				return fmt.Sprintf("创建%s", desc)
			case "PUT":
				return fmt.Sprintf("更新%s", desc)
			case "DELETE":
				return fmt.Sprintf("删除%s", desc)
			}
		}
	}

	// 回退到原始逻辑
	return s.generateDescription(method, path)
}

// collectRoutesWithEnhancedDescription 收集路由信息并生成增强描述
func (s *EnhancedRouteSyncService) collectRoutesWithEnhancedDescription(router *gin.Engine) []RouteInfo {
	var routes []RouteInfo

	// 遍历所有注册的路由
	for _, route := range router.Routes() {
		if route.Method != "" && route.Path != "" {
			module := s.extractModuleFromPath(route.Path)
			description := s.generateEnhancedDescription(route.Method, route.Path)

			routes = append(routes, RouteInfo{
				Path:        route.Path,
				Method:      route.Method,
				Module:      module,
				Description: description,
			})
		}
	}

	return routes
}