package main

import (
	"database/sql"
	"fmt"
	"html/template"
	"log"
	"net/http"

	//"net/url"

	//"time"

	_ "github.com/mattn/go-sqlite3"
)

//logowanie ------------
var loginFROMsite string
var passwordFROMsite string
var UserView string

//users ---------------
var IDusers int
var User string
var Password string
var PIN int
var RFID int
var Login string
var Blokada bool
var Koszt int

//bilety ---------------
var IDbiletu int
var KtoZabral string
var DataCzas string
var KosztBiletu int

//dania ---------------
var IDdania int
var NazwaDania string
var KosztDania int

//***************************************************************************
//funkcje sterujące
//***************************************************************************
//#############################################################################
func opisStołówkaZPM(w http.ResponseWriter, r *http.Request) {
	t, _ := template.ParseFiles("StronaGlowna.gtpl")
	t.Execute(w, nil)
}

//#############################################################################
func panel(w http.ResponseWriter, r *http.Request) {
	//Here:
	//time.Sleep(3 * time.Second)

	/*
		//bilety ----------------------------------
		db, err := sql.Open("sqlite3", "stolowkaZPM.db")
		checkErr(err)
		rows1, err := db.Query("SELECT * FROM bilety")
		checkErr(err)
		fmt.Fprintf(w, "Lista zabranych biletów: \n")
		for rows1.Next() {
			err = rows1.Scan(&IDbiletu, &KtoZabral, &DataCzas, &KosztBiletu)
			checkErr(err)
			fmt.Printf("%d.  %s, %s, %d \n", IDbiletu, KtoZabral, DataCzas, KosztBiletu)
		}
		//----------------------------------
		//dania ----------------------------------
		rows2, err := db.Query("SELECT * FROM dania")
		checkErr(err)
		fmt.Fprintf(w, "Lista dań: \n")
		for rows2.Next() {
			err = rows2.Scan(&IDdania, &NazwaDania, &KosztDania)
			checkErr(err)
			fmt.Printf("%d. %s, %d \n", IDdania, NazwaDania, KosztDania)
		}
		//----------------------------------
		rows1.Close()
		rows2.Close()
		db.Close()
	*/

	fmt.Println("method:", r.Method)
	t, _ := template.ParseFiles("panel.gtpl")
	d := struct {
		UserView string
	}{
		UserView: User}
	t.ExecuteTemplate(w, "panel.gtpl", d)
}

//#############################################################################
func login(w http.ResponseWriter, r *http.Request) {
	loginFROMsite := r.FormValue("loginFROMsite")
	passwordFROMsite := r.FormValue("passwordFROMsite")
	//zaloguj := "Zalogowano!"

	//**************************************************************************
	db, err := sql.Open("sqlite3", "stolowkaZPM.db")
	checkErr(err)
	// query
	rows0, err := db.Query("SELECT * FROM users")
	checkErr(err)

	for rows0.Next() {
		err = rows0.Scan(&IDusers, &User, &Password, &PIN, &RFID, &Login, &Blokada, &Koszt)
		checkErr(err)
		//fmt.Printf("%d.  %s, %s, %d, %d, %s, %d, %d \n", IDusers, User, Password, PIN, RFID, Login, Blokada, Koszt)
		//fmt.Fprint(w, IDusers)
		//fmt.Fprint(w, ".  ")
		//fmt.Fprint(w, User)
		//fmt.Fprint(w, " \n")
		//if r.Method == "POST" {
		if Login == loginFROMsite {
			if Password == passwordFROMsite {
				//fmt.Fprintln(w, zaloguj)
				//fmt.Fprintln(w, usernameFROMsite)
				//time.Sleep(3 * time.Second)
				//if zaloguj == "Zalogowano!"
				http.Redirect(w, r, "http://localhost:9197/panel", http.StatusSeeOther)
				panel(w, r)
				break
			}
		}
		//}
	}

	fmt.Println("method:", r.Method)
	if r.Method == "GET" {
		t, _ := template.ParseFiles("login.gtpl")
		t.Execute(w, nil)
		//} else {
		r.ParseForm()
		//fmt.Println("usernameFROMsite: ", r.Form["usernameFROMsite"])
		//fmt.Println("passwordFROMsite: ", r.Form["passwordFROMsite"])
		//if len(r.Form["usernameFROMsite"][0]) == 0 {
		//	goto Here
		//}
		//if len(r.Form["passwordFROMsite"][0]) == 0 {
		//	goto Here
		//}
	}

	//obsługa blędnego wpisania loginu lub hasła
	if r.Method == "POST" {
		if loginFROMsite != Login {
			if loginFROMsite == "" {
				if passwordFROMsite != Password {
					t, _ := template.ParseFiles("login.gtpl")
					t.Execute(w, nil)
					fmt.Fprint(w, "***  UWAGA!  ***  Błąd logowania! Login lub hasło nieprawidłowe.  ***  Spróbuj ponownie.  ***")
				}
			} else {
				if passwordFROMsite != Password {
					t, _ := template.ParseFiles("login.gtpl")
					t.Execute(w, nil)
					fmt.Fprint(w, "***  UWAGA!  ***  Błąd logowania! Login lub hasło nieprawidłowe.  ***  Spróbuj ponownie.  ***")
				}
			}

		}
	}
	rows0.Close()
	db.Close()
	//**************************************************************************
}

//#############################################################################
func historiaPosilkow(w http.ResponseWriter, r *http.Request) {
	t, _ := template.ParseFiles("historiaPosilkowNaglowek.gtpl")
	d := struct {
		UserView string
	}{
		UserView: User}
	t.ExecuteTemplate(w, "historiaPosilkowNaglowek.gtpl", d)

	//bilety ----------------------------------
	db, err := sql.Open("sqlite3", "stolowkaZPM.db")
	checkErr(err)
	rows3, err := db.Query("SELECT * FROM bilety")
	checkErr(err)
	for rows3.Next() {
		err = rows3.Scan(&IDbiletu, &KtoZabral, &DataCzas, &KosztBiletu)
		checkErr(err)
		if KtoZabral == User {
			t, _ := template.ParseFiles("historiaPosilkow.gtpl")
			d := struct {
				IDbiletuView    int
				KtoZabralView   string
				DataCzasView    string
				KosztBiletuView int
			}{
				IDbiletuView:    IDbiletu,
				KtoZabralView:   KtoZabral,
				DataCzasView:    DataCzas,
				KosztBiletuView: KosztBiletu}
			t.ExecuteTemplate(w, "historiaPosilkow.gtpl", d)
		}
		//----------------------------------
	}
	rows3.Close()
	db.Close()
}

//#############################################################################
func platnosci(w http.ResponseWriter, r *http.Request) {
	t, _ := template.ParseFiles("platnosci.gtpl")
	d := struct {
		UserView string
	}{
		UserView: User}
	t.ExecuteTemplate(w, "platnosci.gtpl", d)

	//bilety ----------------------------------
	db, err := sql.Open("sqlite3", "stolowkaZPM.db")
	checkErr(err)
	rows4, err := db.Query("SELECT * FROM bilety")
	checkErr(err)
	for rows4.Next() {
		err = rows4.Scan(&IDbiletu, &KtoZabral, &DataCzas, &KosztBiletu)
		checkErr(err)
		if KtoZabral == User {
			t, _ := template.ParseFiles("platnosci.gtpl")
			d := struct {
				IDbiletuView    int
				KtoZabralView   string
				DataCzasView    string
				KosztBiletuView int
			}{
				IDbiletuView:    IDbiletu,
				KtoZabralView:   KtoZabral,
				DataCzasView:    DataCzas,
				KosztBiletuView: KosztBiletu}
			t.ExecuteTemplate(w, "platnosci.gtpl", d)
		}
		//----------------------------------
	}
	rows4.Close()
	db.Close()
}

//***************************************************************************
//Bazy danych SQlite
//***************************************************************************

func checkErr(err error) {
	if err != nil {
		fmt.Println("Błąd")
	}
}

//***************************************************************************
//funkcja główna
//***************************************************************************
func main() {
	http.HandleFunc("/", opisStołówkaZPM)
	http.HandleFunc("/login", login)
	http.HandleFunc("/panel", panel)
	http.HandleFunc("/historiaPosilkow", historiaPosilkow)
	http.HandleFunc("/platnosci", platnosci)

	err := http.ListenAndServe(":9197", nil)
	if err != nil {
		log.Fatal("ListenAndServe: ", err)
	}
}