# The code for changing pages was derived from: http://stackoverflow.com/questions/7546050/switch-between-two-frames-in-tkinter
# License: http://creativecommons.org/licenses/by-sa/3.0/	

from database import Table
from analogPressure.sdpArray import SdpArray
from analogPressure.mcp3008 import MCP3008
from digitalPressure.sdp610Array import Spd610Array
from wirelessLoadCell.loadCells import LoadCells
from motorController.pwmOutput import PWM
from motorController.pidController import PID
from ui import *

import tkinter as tk
import tk_tools
import time


class Main(tk.Tk, Table):
  def __init__(self, *args, **kwargs):
    print('initializing window...')
    tk.Tk.__init__(self, *args, **kwargs)
    tk.Tk.wm_title(self, "Windkanal-Tool")

    #early response to user
    self.update_idletasks()

    print('initializing sensors...')
    self.adc = MCP3008(0,0)
    self.pressureSensors = Spd610Array()
    self.forceSensors = LoadCells()
    self.forceSensors.start()
    self.motorController = PWM(32)
    self.pid = PID()

    self.motorEnabled = False
    
    print('initializing database...')
    Table.__init__(self, 
    ["windspeed", "motor_pwm"] + 
    ["pressure_{}".format(i) for i in range(8)] + 
    ["adc_{}".format(i) for i in range(1)] + 
    ["force_X_1", "force_Y_1", "force_Z_1"] +
    ["force_X_2", "force_Y_2", "force_Z_2"] + 
    ["force_X_3", "force_Y_3", "force_Z_3"])


    print('initializing GUI...')
    menubar = tk.Menu(self)
    filemenu = tk.Menu(menubar, tearoff=0)
    filemenu.add_command(label="Save settings", command = lambda: self.popupmsg("Not supported just yet!"))
    filemenu.add_separator()
    filemenu.add_command(label="Exit", command=self.stop)
    menubar.add_cascade(label="File", menu=filemenu)

    tk.Tk.config(self, menu=menubar)

    label = tk.Label(self, text="Bedienelemente", font=LARGE_FONT)
    label.pack(pady=10,padx=10)
    # top menu
    top = tk.Frame(self, borderwidth=2, relief="solid")
    button1 = tk.Button(top, text="Bedienelemente", command=lambda: self.show_frame(Page_1))
    button1.pack(side=tk.LEFT)

    button2 = tk.Button(top, text="Kräfte", command=lambda: self.show_frame(Page_2))
    button2.pack(side=tk.LEFT)

    button3 = tk.Button(top, text="Druck", command=lambda: self.show_frame(Page_3))
    button3.pack(side=tk.LEFT)

    button4 = tk.Button(top,text="Einstellungen",command=lambda: self.show_frame(Page_4))
    button4.pack(side=tk.LEFT)

    button5 = tk.Button(top, text="QUIT", fg="red",command=self.stop)
    button5.pack(side=tk.LEFT)
    top.pack(side="top", fill="both")

    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 (Page_1, Page_2, Page_3, Page_4):

      frame = F(container, self)

      self.frames[F] = frame

      frame.grid(row=0, column=0, sticky="nsew")

    self.show_frame(Page_1)

    print('program ready!')

    self.interval()

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

  def popupmsg(self, msg=""):
      popup = tk.Toplevel(self.master)
      popup.wm_title("Error!")
      label = tk.Label(popup, text=msg, font=LARGE_FONT)
      label.pack(side="top", fill="x", pady=10)
      b1 = tk.Button(popup, text="Okay", command=popup.destroy)
      b1.pack()
      
  def interval(self):
    self.after(300,self.interval)
    start = time.time()
    adcValue = self.adc.getVoltage(0)
    windSpeed = adcValue * 1337
    pwmValue = self.pid.update(windSpeed)
    if not self.motorEnabled:
      pwmValue = 0
    self.motorController.setDutyCycle(pwmValue)

    i2cValues = self.pressureSensors.getValues()

    self.addRow(
      [windSpeed, pwmValue] + 
      i2cValues +
      [adcValue] +
      self.forceSensors.getForces(0) +
      self.forceSensors.getForces(1) +
      self.forceSensors.getForces(2)
    )
    print("sensors: {:8.3f} ms".format((time.time() - start)*1000))

    start = time.time()
    for frame in self.frames:
      self.frames[frame].update(self.frames[frame] == self.currentFrame)

    print("draw:    {:8.3f} ms".format((time.time() - start)*1000))
    
  def stop(self):
    self.forceSensors.stop()
    self.quit()