# Freeman Lo
#
# This is a ftp client written in python with Tkinter as the GUI.
# Much of this was a pain to do due to the complicated natur of
# the GUI toolkit. There are three types of Geometry Manager. I have
# selected and used the grid geometry manager instead of the pack
# geometry manager or the place geometry. There were pluses and minuses to each of the Geometries.
# The Tk toolkit itself is quite old and many people have migrated over 
# to the wx python GUI toolkit. I found this out too late to work on the wx GUI.
# I will try to create this program again over this summer and make it
# better and stick a GNU GPL v.2 and post this app on SourceForge.org
# for the masses. 

# Key components to have: linux compatible, diversify complicated methods
# Create more functionalities such as printout messages for errors
# and allow for all directory path difference and file differences
# directories differences and much more functionalities are needed.
####################################################################

import ftplib
import os, sys, urlparse
import re
import thread
import threading
from ftplib import FTP
from Tkinter import *


# Fuction Area
def getServerString():
	servername = ent1.get()

def getUserName():
	username = ent2.get()

def getPassword():
	password = ent3.get()

def exit():
	sys.exit()

def writeString(mess):
	text1.insert(INSERT, mess)

def clearBox():
	ent1.delete(0,128)
	ent2.delete(0,128)
	ent3.delete(0,128)

def downWithData(stuff):
	fi.write(stuff)
	text1.insert(INSERT, "#")
	print '#',

def disconnect(fi, ftp):
	ftp.quit()
	fi.close()

def setLogin():
	serv = ent1.get()
	if ent2.get() == "" and ent3.get() =="":
		usrn = "anonymous"
		pawd = "anonymous"
	else:
		usrn = ent2.get()
		pawd = ent3.get()

	url = urlparse.urlparse(serv) # url[1]
# needs regular expression to get filename
	# this is re for getting the filename
	lock = threading.Lock()
	lock.acquire()
	exp = re.compile(r'(\w*)\.(\w*)')
	a = exp.search(url[2])
	fin = a.group()						# Filename From the URL
	lock.release()
	# this is re for getting the URL
	lock.acquire()
	exp = re.compile(r'(\w*/)*')
	a = exp.search(url[2])
	path = a.group()					# directories from the URL
	lock.release()
	# this is getting the local machine path using all kinds of stuff
	lock.acquire()
	fn = os.getenv("USERPROFILE")+"\\DESKTOP\\"+fin
	lock.release()

# needs a local file open descriptor
	lock.acquire()
	fi = open(fn,'w')
	lock.release()
# it will be awhile before i can get here	
	ftp = FTP(url[1], usrn, pawd)
	ftp.connect()
	ftp.login()
	lock.acquire()
	mess = ftp.getwelcome()
	writeString(mess)
#	thread.start_new_thread(writeString, ())
	lock.release()
	lock.acquire()
	writeString("\n")
	mess = ftp.cwd(path)
	writeString(mess)
#	thread.start_new_thread(writeString, ())
	lock.release()
#	downWithData(fi)
	lock.acquire()
	ftp.retrbinary('RETR '+fin, fi.write)
#	setAbort(ftp)
	lock.release()
	lock.acquire()
	disconnect(fi, ftp)
	lock.release()
#	thread.start_new_thread(disconnect, ())
#	fi.close()
#	ftp.quit()
	
# variables

# primary window, main window, size of window
root = Tk()
root.title("Freeman FTP Client")

# size of the screen
#root.minsize(250, 250)
#root.maxsize(290, 270)

# create menus
menu = Menu(root)
root.config(menu=menu)

filemenu = Menu(menu)
menu.add_cascade(label="File", menu=filemenu)
filemenu.add_command(label="Login", command=setLogin)
#filemenu.add_command(label="Abort", command=setAbort)
filemenu.add_command(label="Exit", command=exit)

#editmenu = Menu(menu)
#menu.add_cascade(label="Edit", menu=editmenu)
#editmenu.add_command(label="Abort", command=setAbort)
#editmenu.add_command(label="die", command=setAbort)

#servermenu = Menu(menu)
#menu.add_cascade(label="Server")
#servermenu.add_command(label="connect...", command=setAbort)
#servermenu.add_command(label="disconnect...", command=setAbort)

# create labels and entries
lab1 = Label(root,text="URL :")
lab1.grid(row=0, column=0)
ent1 = Entry(root, width=35, takefocus=1, relief=SUNKEN)
ent1.grid(row=0, column=1)
lab2 = Label(root,text="User Name:")
lab2.grid(row=1, column=0)
ent2 = Entry(root, width=35, relief=SUNKEN)
ent2.grid(row=1, column=1)
lab3 = Label(root,text="Password:")
lab3.grid(row=2, column=0)
ent3 = Entry(root, width=35, show="*", relief=SUNKEN)
ent3.grid(row=2, column=1)

# create Button
but1 = Button(root, width=10, text="Clear All", command=clearBox)
but1.grid(row=0, column=2)
but2 = Button(root, width=10, text="Exit", command=exit)
but2.grid(row=1, column=2)
but3 = Button(root, width=10, text="Login", command=setLogin) # getServerString do the command a little later
but3.grid(row=2, column=2)

# create Text Box
text1 = Text(root, bg="#ffffff", relief=SUNKEN, height=15, width=70)
text1.grid(row=4, columnspan=5)

# create Text Areas to display stuff
status = Label(root, text="Status Bar", height=1, width=70, bd=1,  relief=SUNKEN, anchor=W)
status.grid(row=6, columnspan=5)
root.mainloop()