package server

import (
	"encoding/json"
	"net/http"
	"strings"

	"git.pyer.club/kingecg/gohttpd/model"
)

type Middleware func(w http.ResponseWriter, r *http.Request, next func())

func BasicAuth(w http.ResponseWriter, r *http.Request, next func()) {
	config := model.GetConfig()

	if config.Admin.Username == "" || config.Admin.Password == "" {
		next()
		return
	}
	user, pass, ok := r.BasicAuth()
	if ok && user == config.Admin.Username && pass == config.Admin.Password {
		next()
	} else {
		w.Header().Set("WWW-Authenticate", `Basic realm="Restricted"`)
		http.Error(w, "Unauthorized.", http.StatusUnauthorized)
	}
}

func Parse[T any](w http.ResponseWriter, r *http.Request, next func()) {

	if r.Method == "POST" || r.Method == "PUT" {
		//判断r的content-type是否是application/x-www-form-urlencoded
		if r.Header.Get("Content-Type") == "application/x-www-form-urlencoded" {
			r.ParseForm()
			next()
			return
		}
		if r.Header.Get("Content-Type") == "multipart/form-data" {
			r.ParseMultipartForm(r.ContentLength)
			next()
			return
		}
		// 判断r的content-type是否是application/json
		contentType := r.Header.Get("Content-Type")
		if strings.Contains(contentType, "application/json") {
			var t T
			// 读取json数据
			if err := json.NewDecoder(r.Body).Decode(&t); err != nil {
				http.Error(w, err.Error(), http.StatusBadRequest)
				return
			}
			ctx := r.Context()
			m := ctx.Value(RequestCtxKey("data")).(map[string]interface{})
			if m != nil {
				m["data"] = t
			}
			next()
			return
		}
	}
	next()
}