package main 

import (
	"log"
	"database/sql"
	"os"
	"time"
	"fmt"
	"net/http"
	"html/template"
	"github.com/gorilla/mux"
	"github.com/gorilla/sessions"

	_ "github.com/go-sql-driver/mysql"

)

type Page struct {
    Title string
    Body  []byte
}

var (
	logger	*log.Logger
	sessionsStore = sessions.NewCookieStore([]byte("mysecretcookie"))
	indexTemplate = template.Must(template.ParseFiles("www\\index.html"))
	logInTemplate = template.Must(template.ParseFiles("www\\login.html"))
	signInTemplate = template.Must(template.ParseFiles("www\\signin.html"))
)

func indexHandler(w http.ResponseWriter, r *http.Request) {
	data := struct {
		User string
		Title string
		Items []string
	}{
		User: "",
		Title: "My page",
		Items: []string{
			"My photos",
			"My blog",
			"More",
		},
	}
	

	session, _ := sessionsStore.Get(r, "session")

	var (
		password string
		ok3 bool
	)

	untyped, ok := session.Values["username"]
	if ok {
		username, ok1 := untyped.(string)
		if ok1 {
			data.User = username
			untyped, ok2 := session.Values["password"]
			if ok2 {
				password, ok3 = untyped.(string)
				
			} 
		}
	} 
	

	indexTemplate.Execute(w, data)

	if ok3 {
		w.Write([]byte(password))
	}

}

func indexPostHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Print("POST")
}

func logInGetHandler(w http.ResponseWriter, r *http.Request) {
	logInTemplate.Execute(w, nil)
}

func logInPostHandler(w http.ResponseWriter, r *http.Request) {
	r.ParseForm()
	username := r.PostForm.Get("username")
	password := r.PostForm.Get("password")

	//dBConnector.
	
	db, err := sql.Open("mysql", "gosite:gositepassword@tcp(192.168.48.5)/gosite")

	if err != nil {
		fmt.Print("Error")
		panic(err)
	}

	defer db.Close()

	var counter int

	act_query := "SELECT count(*) FROM gosite.users WHERE username='" + username + "' AND password='" + password + "';"
	db.QueryRow(act_query).Scan(&counter)
	fmt.Println("we have", counter, "rows")
    
    if (counter == 0) {
    	logInTemplate.Execute(w, nil)
    	return
    }

    session, _ := sessionsStore.Get(r, "session")
	session.Values["username"] = username
	session.Values["password"] = password

	session.Save(r,w)
	fmt.Printf("%s\n%s\n",username,password)
	http.Redirect(w, r, "/", http.StatusFound)
}

func signInHandler(w http.ResponseWriter, r *http.Request) {
	signInTemplate.Execute(w, nil)
}

func pressHandler(w http.ResponseWriter, r *http.Request) {
	logger.Print("click")
	http.Redirect(w, r, "/", http.StatusFound)
}


func createLogger() {
	startTime := time.Now()
	logFileName := "logs/go-site_log_" + startTime.Format("2006-01-02_15-04-05") + ".txt"
	file, err := os.OpenFile(logFileName, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0666)
	logger = log.New(file, "logger: ", log.Lshortfile)
  	
  	if err != nil {
        	log.Fatal(err)
    	}

}

type user struct{
    idusers int
    username string
    password string
}


func main() {
	
	

	createLogger()

	logger.Print("Hello, log file!")

	requestRouter := mux.NewRouter()

	
    
    

    requestRouter.HandleFunc("/", indexHandler).Methods("GET")
    requestRouter.HandleFunc("/", indexPostHandler).Methods("POST")
    requestRouter.HandleFunc("/login/", logInGetHandler).Methods("GET")
    requestRouter.HandleFunc("/login/", logInPostHandler).Methods("POST")
    requestRouter.HandleFunc("/signin/", signInHandler).Methods("GET")
    //requestRouter.HandleFunc("/", pressHandler).Methods("POST")
    http.Handle("/", requestRouter)
    logger.Fatal(http.ListenAndServe(":8080", nil))
}