package main

import (
	"database/sql"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

	_ "github.com/lib/pq"
)

func main() {
	// Set up flags
	log.Println("Setting up components")
	registerHTTPFlags()
	flag.Parse()

	// Set up HTTP server
	log.Printf("Running HTTP server on port %d", *port)
	httpServer := setupHTTPServer()

	// React to system signals
	signalChannel := make(chan os.Signal, 1)
	signal.Notify(signalChannel)
	go cleanup(signalChannel, httpServer)

	////////////////////////////////////////////////////////////////////////////////

	connStr := "user=postgres dbname=postgres sslmode=disable"
	db, err := sql.Open("postgres", connStr)
	if err != nil {
		log.Fatal(err)
	}

	// get the current name of the challenges
	query := fmt.Sprintf("SELECT name FROM challenges")
	var name string
	err = db.QueryRow(query).Scan(&name)
	if err != nil {
		log.Fatalf("[ E ] :", err)
	}

	fmt.Println(name)

	////////////////////////////////////////////////////////////////////////////////

	// Start our HTTP server
	log.Fatalln(httpServer.ListenAndServe())
}

func cleanup(signalChannel chan os.Signal, server http.Server) {
	// Block until we receive a signal
	<-signalChannel
	log.Println("Requested shutdown")

	// Stop everything
	log.Println("Stopping HTTP server")
	server.Close()
	os.Exit(0)
}