package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"
	"runtime"
	"time"

	"git.nochill.in/nochill/excel_import_playground/internal"
	"git.nochill.in/nochill/excel_import_playground/internal/repository"
	"git.nochill.in/nochill/excel_import_playground/internal/rest"
	"github.com/gorilla/mux"
	"github.com/jackc/pgx/v5/pgxpool"
	"github.com/joho/godotenv"
)

func main() {
	runtime.GOMAXPROCS(5)
	var wait time.Duration
	flag.DurationVar(&wait, "graceful-timeout", time.Second*15, "the duration for which the server gracefully wait for existing connections to finish - e.g. 15s or 1m")
	flag.Parse()

	err := godotenv.Load()
	if err != nil {
		log.Fatal(err.Error())
	}

	_ = os.Getenv("JWT_SALT")
	DATABASE_URL := os.Getenv("DATABASE_URL")
	APP_HOST := os.Getenv("APP_HOST")

	poolConfig, err := pgxpool.ParseConfig(DATABASE_URL)
	if err != nil {
		log.Fatal("ENV DATABASE_URL NOT FOUND", err)
	}
	dbConn, err := pgxpool.NewWithConfig(context.Background(), poolConfig)

	if err != nil {
		log.Fatal("cannot connect to db: ", err)
	}

	store := repository.NewStore(dbConn)

	server, err := rest.NewServer(store)

	if err != nil {
		log.Fatal("Somethng wrong while try to start Server", err)
	}

	r := mux.NewRouter()
	r.Use(internal.AuthMiddleware)
	r.HandleFunc("/", homeRoute).Methods("GET")
	r.HandleFunc("/import-pasien", server.ImportPatientHandler).Methods("POST")
	r.HandleFunc("/update-pasien/{id}", server.UpdatePatient).Methods("PATCH")

	// r.HandleFunc("/foo", fooHandler).Methods(http.MethodGet, http.MethodPut, http.MethodPatch, http.MethodOptions)
	// r.Use(mux.CORSMethodMiddleware(r))

	// val := internal.FindValueByLabel("PNS")

	// fmt.Println(val.ID)

	srv := &http.Server{
		Handler: r,
		Addr:    APP_HOST,
		// Good practice: enforce timeouts for servers you create!
		WriteTimeout: 15 * time.Second,
		ReadTimeout:  15 * time.Second,
	}

	go func() {
		host := fmt.Sprintf("Server running on %s", APP_HOST)
		fmt.Println(host)
		if err := srv.ListenAndServe(); err != nil {
			log.Println(err)
		}
	}()

	c := make(chan os.Signal, 1)
	// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C)
	// SIGKILL, SIGQUIT or SIGTERM (Ctrl+/) will not be caught.
	signal.Notify(c, os.Interrupt)

	// Block until we receive our signal.
	<-c

	// Create a deadline to wait for.
	ctx, cancel := context.WithTimeout(context.Background(), wait)
	defer repository.DbPool.Close()
	defer cancel()
	// Doesn't block if no connections, but will otherwise wait
	// until the timeout deadline.
	srv.Shutdown(ctx)
	// Optionally, you could run srv.Shutdown in a goroutine and block on
	// <-ctx.Done() if your application should wait for other services
	// to finalize based on context cancellation.
	log.Println("shutting down")
	os.Exit(0)

}

func homeRoute(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	res := map[string]any{
		"halo": "halo",
	}
	json.NewEncoder(w).Encode(res)

}