package req

import (
	"net/http"

	"github.com/go-chi/chi/v5"
)

type RouteMethod string
type RouteService string
type RouteParamType string
type RouteParamCategory string

type RouteCtx struct {
	Name string
}

const (
	GET       RouteMethod = "GET"
	POST      RouteMethod = "POST"
	PUT       RouteMethod = "PUT"
	DELETE    RouteMethod = "DELETE"
	WS        RouteMethod = "WS"
	SSE       RouteMethod = "SSE"
	GRPC      RouteMethod = "GRPC"
	MCP       RouteMethod = "MCP"
	STRUCTURE RouteMethod = "STRUCTURE"
)

const (
	// resource_apis
	FUNC    RouteService = "func"
	SHOW    RouteService = "show"
	QUERY   RouteService = "query"
	STORE   RouteService = "store"
	DESTROY RouteService = "destroy"
	// system
	FSM                    RouteService = "fsm"
	LIST                   RouteService = "list"
	XLSX                   RouteService = "xlsx"
	IMPORT                 RouteService = "import"
	PRINT                  RouteService = "print"
	LAYOUT                 RouteService = "layout"
	GRID_LAYOUT            RouteService = "grid-layout"
	GRID_LAYOUT_FORM       RouteService = "grid-layout-form"
	ECHART                 RouteService = "echart"
	APPROVAL               RouteService = "approval"
	SELECTOR               RouteService = "selector"
	LIST_DETAIL            RouteService = "list-detail"
	LIST_DATA_STORE        RouteService = "list-data-store"
	LIST_GRID_LAYOUT       RouteService = "list-grid-layout"
	LIST_CONDITION_LAYOUT  RouteService = "list-condition-layout"
	LIST_OPERATIONS_ACCESS RouteService = "list-operations-access"
)

const (
	ReqString  RouteParamType = "string"
	ReqBool    RouteParamType = "bool"
	ReqNumber  RouteParamType = "number"
	ReqInteger RouteParamType = "integer"
	ReqFloat   RouteParamType = "float"
	ReqJson    RouteParamType = "json"
	ReqArray   RouteParamType = "array"
	ReqAny     RouteParamType = "any"
)

const (
	ROUTER RouteParamCategory = "router"
	HEADER RouteParamCategory = "header"
	PARAM  RouteParamCategory = "param"
)

func (k RouteCtx) String() string {
	return k.Name
}

type RouteMiddleware interface {
	HttpMiddleware(r Route) func(next http.Handler) http.Handler
}

type Router interface {
	Call(r *http.Request, code string, params map[string]any, opts ...RouteMatchOption) (HttpResponse, error)
	// CallWithUser 与 Call 相同,但内部转发请求时冒充成 u 的身份,而不是沿用 r 自带的身份
	// (比如需要以系统用户身份发起内部调用)。
	CallWithUser(r *http.Request, u User, code string, params map[string]any, opts ...RouteMatchOption) (HttpResponse, error)
	Get(uuid string, opts ...RouteMatchOption) (Route, bool)
	Register(cr chi.Router)
	RefreshRoutes() error
	// Shutdown 关闭路由层管理的所有长连接（如 MCP SSE），
	// 应通过 http.Server.RegisterOnShutdown 注册，在 HTTP 服务关闭时调用。
	Shutdown()
}

type Route interface {
	Method() RouteMethod
	GetUuid() string
	GetCode() string
	GetPrimaryKey() string
	GetUri() string
	GetUris() []string
	GetParamValues(*http.Request, ...RouteParam) (GlobalParams, error)
	GetResource() Resource
	GetService() RouteService
	GetRoles() []string
	MakeRequest(r *http.Request, params map[string]any) (*http.Request, error)
	Version() string
}

type RouteParam interface {
	GetCode() string
	GetDataType() RouteParamType
	GetCategory() RouteParamCategory
	IsRequired() bool
	InjectRequestToGlobalParams(*http.Request, GlobalParams) error
}

type RouteMatchOption func(opts *RouteMatches)
type RouteMatches struct {
	methods  []RouteMethod
	services []RouteService
}

func (this RouteMatches) RouteMethods() []RouteMethod {
	return this.methods
}

func (this RouteMatches) RouteServices() []RouteService {
	return this.services
}

func RouteMatch[T RouteMethod | RouteService](v T) RouteMatchOption {
	return func(opt *RouteMatches) {
		switch value := any(v).(type) {
		case RouteMethod:
			opt.methods = append(opt.methods, value)
		case RouteService:
			opt.services = append(opt.services, value)
		}
	}
}