package configui

import (
	"log"
	"net/http"
	"strings"
)

func (cui *ConfigUI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	cui.middleware(cui.mux()).ServeHTTP(w, r)
}

func (cui *ConfigUI) middleware(next http.Handler) http.Handler {
	return http.HandlerFunc(
		func(w http.ResponseWriter, r *http.Request) {
			rw := &CuiResponseWriter{w, 0}
			defer catch(rw, r)
			ip := GetIP(r)
			if cui.AllowIP != "" {
				if !matchIPGlob(ip, cui.AllowIP) {
					rw.WriteHeader(403)
					panic("permission denied")
				}
			}
			next.ServeHTTP(rw, r)
			//logging
			if !strings.HasPrefix(r.URL.Path, "/public") && r.URL.Query().Get("f") != "true" {
				log.Printf("%s %s %d %s %s\n", ip, r.Method, rw.StatueCode, r.URL, r.Header.Get("User-Agent"))
			}
		},
	)
}

func (cui *ConfigUI) mux() *http.ServeMux {
	cuiR := http.NewServeMux()
	cuiR.HandleFunc("/api/conf", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" {
			cui.GetConfig(w, r)
		} else if r.Method == "POST" {
			cui.PostConfig(w, r)
		} else {
			w.WriteHeader(404)
		}
	})
	cuiR.HandleFunc("/api/files", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" {
			cui.ListFiles(w, r)
		} else {
			w.WriteHeader(404)
		}
	})
	cuiR.HandleFunc("/api/file", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" {
			cui.GetFile(w, r)
		} else if r.Method == "POST" {
			cui.PostFile(w, r)
		} else {
			w.WriteHeader(404)
		}
	})
	cuiR.HandleFunc("/api/apply", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "POST" {
			cui.Apply(w, r)
		} else {
			w.WriteHeader(404)
		}
	})
	cuiR.HandleFunc("/api/export", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" {
			cui.Download(w, r)
		} else {
			w.WriteHeader(404)
		}
	})
	cuiR.Handle("/public/", http.StripPrefix("/public/", http.FileServer(http.FS(cui.PublicFS))))
	cuiR.HandleFunc("/", cui.App)
	return cuiR
}