#!/usr/bin/env python
from threading import Thread
import time
from time import sleep
from time import strftime
import datetime
from datetime import datetime
import tkinter as tk
from tkinter import ttk
from queue import Queue
import RPi.GPIO as GPIO
import sys
sys.path.append('/home/pi/MFRC522-python')
from mfrc522 import SimpleMFRC522
reader = SimpleMFRC522()

LARGE_FONT= ("Verdana", 28)
CLOCK_FONT= ("Verdana", 96)
the_time=''
TIME = newtime = time.time()

class TimeClock(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand= True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}
        for F in (StartPage, PageOne, PageTwo):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")
        self.show_frame(StartPage)

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

    def go(self):
        p = Backend(self.queue)
        p.start()
        self.after(100, self.check_queue)

class  StartPage(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.configure(background="darkblue")

        label = tk.Label(self, text="XCompany", font=LARGE_FONT, bg="darkblue", fg="yellow")
        label.pack(pady=10,padx=10)

        lblSwipe = tk.Label(self, text="Swipe Card", font=LARGE_FONT, bg="darkblue", fg="yellow")
        lblSwipe.pack(pady=10, padx=10)

        btnOtherFrame = tk.Button(self, text="RFID Scan Should Open Next Frame", command=lambda: controller.show_frame(PageTwo))
        btnOtherFrame.pack()

        self.status = tk.StringVar(self, value= "") #'.')
        tk.Label(self, textvariable=self.status,font=LARGE_FONT, fg="yellow", bg="Darkblue").place(x=600, y = 350 ,anchor = "s")         #, anchor= "n")#                                          pack(side="top")

        self.queue = Queue()

        self.go()

    def go(self):
        p = Backend(self.queue)
        p.start()
        self.after(100, self.check_queue)

    def check_queue(self):
        if not self.queue.empty():
            self.status.set(self.queue.get())
        if self.status.get() != 'done':
            self.after(100, self.check_queue)

class  PageOne(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = tk.Label(self, text="Page One", font=LARGE_FONT)
        label.pack(pady=10,padx=10)

        button1 = tk.Button(self, text="Back to Home", command=lambda: controller.show_frame(StartPage))
        button1.pack()

        button2 = tk.Button(self, text="Visit Page 2", command=lambda: controller.show_frame(PageTwo))
        button2.pack()

class  PageTwo(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = tk.Label(self, text="Page Two", font=LARGE_FONT)
        label.pack(pady=10,padx=10)

        button1 = tk.Button(self, text="Back to Home", command=lambda: controller.show_frame(StartPage))
        button1.pack()

        button2 = tk.Button(self, text="Vist Page 1", command=lambda: controller.show_frame(PageOne))
        button2.pack()

class Backend(Thread):
    def __init__(self, queue, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.queue = queue

    def run(self):
        self.queue.put('')
        #for n in range(1, 100):  Just have a loop to keep checking for input
        i = 1;
        while i == 1:
            print("Hold a tag near the reader")
            try:
                id, text = reader.read()
                print(id)
                print(text)

                strName = "Accepted: " + text[5:]
                #self.queue.put(text)
                self.queue.put(strName)

                sleep(1)
                strEmpNo = text[:4]
                print(strEmpNo)

                strEmpName =text[5:]
                strEmpName = strEmpName.strip()
                print(strEmpName)

                rawTime = time.time()
                print (rawTime)
                strRawTime = str(rawTime)

                current_time = strftime("%H:%M:%S")
                print (current_time)

                date_time = strftime("%m/%d/%Y")
                print(date_time)

                currentDT = strftime("%m/%d/%Y %H:%M:%S")
                strDate = str(currentDT)
                print (str(currentDT))

                #Save Data to MySQL DB

                sleep(2) # pause needed so we do not get multiple entry's
                self.queue.put('')

            #except:
            except Exception as e: print(e)
                #print("exception")

        self.queue.put('done')
        GPIO.cleanup()

app = TimeClock()
app.geometry("800x480")