package main

import (
	"fmt"
	"log/slog"
	"net/http"
	"time"
)

type Route struct {
	Path    string
	Handler http.HandlerFunc
}

type API struct {
	Routes     []Route
	StaticRoot string
}

func LoggingMiddleware(f http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		start := time.Now()
		f(w, r)
		slog.Info(fmt.Sprintf("%s - %s (%dms)", r.Method, r.URL, time.Now().Sub(start).Milliseconds()))
	}
}

func (a API) Start(addr string) {
	for _, route := range a.Routes {
		http.HandleFunc(route.Path, LoggingMiddleware(route.Handler))
	}

	if a.StaticRoot != "" {
		http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir(a.StaticRoot))))
	}

	http.ListenAndServe(addr, nil)
}

func (a *API) AddRoute(path string, handler http.HandlerFunc) {
	a.Routes = append(a.Routes, Route{Path: path, Handler: handler})
}