package gee

import "net/http"

type HandlerFunc func(*Context)

type Engine struct {
	router *router
}

// New 实例化Engine
func New() *Engine {
	return &Engine{router: newRouter()}
}

// addRoute 添加路由规则
func (engine *Engine) addRoute(method string, pattern string, handler HandlerFunc) {
	engine.router.addRoute(method, pattern, handler)
}

// GET 添加GET路由规则
func (engine *Engine) GET(pattern string, handler HandlerFunc) {
	engine.addRoute("GET", pattern, handler)
}

// POST 添加POST路由规则
func (engine *Engine) POST(pattern string, handler HandlerFunc) {
	engine.addRoute("POST", pattern, handler)
}

// Run 启动服务
func (engine *Engine) Run(addr string) (err error) {
	return http.ListenAndServe(addr, engine)
}

// ServeHTTP 实现了ServeHTTP接口
func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	c := newContext(w, r)
	engine.router.handle(c)
}