/*
 * MIT License
 *
 * Copyright (c) 2019 Nicolas JUHEL
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package router

import (
	"os"

	ginsdk "github.com/gin-gonic/gin"
)

const (
	EmptyHandlerGroup           = "<nil>"
	GinContextStartUnixNanoTime = "gin-ctx-start-unix-nano-time"
	GinContextRequestPath       = "gin-ctx-request-path"
	GinContextRequestUser       = "gin-ctx-request-user"
)

var (
	defaultRouters = NewRouterList(DefaultGinInit)
)

func init() {
	if os.Getenv("GIN_MODE") == "" {
		ginsdk.SetMode(ginsdk.ReleaseMode)
	}
}

type RegisterRouter func(method string, relativePath string, router ...ginsdk.HandlerFunc)
type RegisterRouterInGroup func(group, method string, relativePath string, router ...ginsdk.HandlerFunc)

type RouterList interface {
	Register(method string, relativePath string, router ...ginsdk.HandlerFunc)
	RegisterInGroup(group, method string, relativePath string, router ...ginsdk.HandlerFunc)
	RegisterMergeInGroup(group, method string, relativePath string, router ...ginsdk.HandlerFunc)
	Handler(engine *ginsdk.Engine)
	Engine() *ginsdk.Engine
}

func NewRouterList(initGin func() *ginsdk.Engine) RouterList {
	return &rtr{
		init: initGin,
		list: make(map[string][]itm),
	}
}