#!/usr/bin/env python3
#
# Copyright (C) 2012 Sven Erik Knop, Perforce Software Ltd
#
# Idea:
# Sync files from the default location (or, with -p, -u, -c, -H, -P options)
# Show progress using the Tkinter.tkk ProgressBar, P4.OutputHandler and P4.Progress
#

from __future__ import print_function

from argparse import ArgumentParser
import P4

import Tkinter as tk
import ttk

import threading
import Queue

class P4Command:
	def __init__(self):
		self.parser = ArgumentParser(
			description=self.description(),
			epilog="Copyright (C) 2012 Sven Erik Knop, Perforce Software Ltd"
		)
		self.parser.add_argument('-p', '--port', 		help="P4PORT")
		self.parser.add_argument('-c', '--client',		help="P4CLIENT")
		self.parser.add_argument('-u', '--user',		help="P4USER")
		self.parser.add_argument('-H', '--host',		help="P4HOST")
		self.parser.add_argument('-P', '--password',	help="P4PASSWD")
		self.parser.add_argument('-d', '--directory',	help="CWD")

		self.addArguments()

		self.myOptions = self.parser.parse_args()
		self.p4 = P4.P4()
		
		if self.myOptions.port:
			self.p4.port = self.myOptions.port
		if self.myOptions.client:
			self.p4.client = self.myOptions.client
		if self.myOptions.user:
			self.p4.user = self.myOptions.user
		if self.myOptions.host:
			self.p4.host = self.myOptions.host
		if self.myOptions.password:
			self.p4.password = self.myOptions.password
		if self.myOptions.directory:
			self.p4.cwd = self.myOptions.directory

	def description(self):
		return "P4Command"
	
	def addArguments(self):
		pass

class GuiPart:
	def __init__(self, master, mainframe, queue):
		self.queue = queue
		self.master = master
		
		self.progress = ttk.Progressbar(mainframe, orient="horizontal", length=300, mode="determinate")
		self.progress.grid(column=0, row=0, sticky="EW")
		
		self.progress["value"] = 0
		self.progress["maximum"] = 100

		self.percent = tk.StringVar()
		self.percent.set("0.0 %")
		ttk.Label(mainframe, textvariable=self.percent).grid(column=1, row=0)
		
		frame = ttk.Frame(mainframe)
		frame.grid(column=0, row=1,sticky="NSEW")

		frame.columnconfigure(0, weight=1)
		frame.rowconfigure(0, weight=1)
		
		self.yscrollbar= ttk.Scrollbar(frame, orient=tk.VERTICAL)
		self.yscrollbar.grid(column=1, row=0, sticky="NS")
		
		self.xscrollbar = ttk.Scrollbar(frame, orient=tk.HORIZONTAL)
		self.xscrollbar.grid(column=0, row=1, sticky="EW")
		
		self.listbox = tk.Listbox(frame, height=10,width=40, 
								yscrollcommand=self.yscrollbar.set,
								xscrollcommand=self.xscrollbar.set)
		self.listbox.grid(column=0, row=0, sticky="NSEW" )
		
		self.yscrollbar["command"] = self.listbox.yview
		self.xscrollbar["command"] = self.listbox.xview
		

		self.button = ttk.Button(mainframe, text="Sync", command=master.start)
		self.button.grid(column=1,row=1,sticky=tk.S)
		
		for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5)
		
	class StartRefresh:
		def __init__(self):
			pass
		def apply(self, gui):
			gui.button.configure(text="Cancel")
			gui.button.configure(command=gui.master.cancel)
	
	class FinishedRefresh:
		def __init__(self):
			pass
		def apply(self, gui):
			gui.button.configure(text="Quit")
			gui.button.configure(command=gui.master.quit)
	
	class DescriptionRefresh:
		def __init__(self, description):
			self.description = description
		def apply(self, gui):
			gui.master.title(self.description)
			gui.progress["value"] = 0
	
	class UpdateRefresh:
		def __init__(self, value):
			self.value = value
		def apply(self, gui):
			gui.progress["value"] = self.value
			gui.percent.set("%.1f %%" % self.value)
	
	class DepotFileRefresh:
		def __init__(self, filename):
			self.filename = filename
		def apply(self, gui):
			gui.listbox.insert(tk.END, self.filename + "\n")
			gui.listbox.yview(tk.END)

	
	def processIncoming(self):
		"""Read from queue, process results"""
		
		while self.queue.qsize():
			try:
				refresh = self.queue.get(0)
				refresh.apply(self)
			except Queue.Empty:
				pass


class P4Sync(P4Command, tk.Tk, P4.Progress, P4.OutputHandler):
	def __init__(self):
		P4Command.__init__(self)
		tk.Tk.__init__(self)
		P4.Progress.__init__(self)
		P4.OutputHandler.__init__(self)
		
		self.columnconfigure(0, weight=1)
		self.rowconfigure(0, weight=1)
		
		self.title("P4 Sync")
		self.mainframe = ttk.Frame(self, padding="3 3 12 12 ")
		self.mainframe.grid(column=0, row=0, sticky=(tk.N, tk.W, tk.E, tk.S))
		self.mainframe.columnconfigure(0, weight=1)
		self.mainframe.rowconfigure(0, weight=0) # don't move the scrollbar up or down
		self.mainframe.columnconfigure(1, weight=0)
		self.mainframe.rowconfigure(1, weight=1)
		
		self.queue = Queue.Queue()
		self.gui = GuiPart(self,self.mainframe, self.queue)
		
		self.finished = False
		
	def addArguments(self):
		self.parser.add_argument('-n', '--preview', dest='syncOptions', action='append_const', const='-n', help="Preview only, no syncing")
		self.parser.add_argument('--force', dest='syncOptions', action='append_const', const='-f', help="Force the update regardless of previous syncs")
		self.parser.add_argument('--print', dest='syncOptions', action='append_const', const='-p', help="Update local workspace without updating the database")
		self.parser.add_argument('--keep', dest='syncOptions', action='append_const', const='-k',  help="Update database without updating the local workspace")

		self.parser.add_argument('filepaths', type=str, nargs='*', help="[file[revRange] ...]")

	def description(self):
		return "P4Sync"
	
	class Callback(P4.Progress, P4.OutputHandler):
		def __init__(self, queue):
			self.queue = queue
			self.totalFileCount = 0
			self.totalFileSize = 0		
			self.response=P4.OutputHandler.HANDLED
		
		def outputStat(self, stat):
			if 'totalFileCount' in stat:
				self.totalFileCount = int(stat['totalFileCount'])
			if 'totalFileSize' in stat:
				self.totalFileSize = int(stat['totalFileSize'])
			if 'depotFile' in stat:
				refresh = GuiPart.DepotFileRefresh(stat['depotFile'] + "#" + stat['rev'])
				self.queue.put(refresh)
			return self.response
		
		def outputMessage(self, message):
			print("Error: ", message)
			return P4.OutputHandler.CANCEL
		
		def init(self, type):
			self.type = type
	
		def setDescription(self, description, unit):
			refresh = GuiPart.DescriptionRefresh(description)
			
			self.queue.put(refresh)
			
			# print("TotalFileCount: ", self.totalFileCount)
			# print("TotalFileSize: ", self.totalFileSize)
			
			
		def setTotal(self, total):
			pass
			# print("Total: %s" % total)
	
		def update(self, position):
			self.position = position
			
			# print("Position: %s" % position)

			refresh = GuiPart.UpdateRefresh(100 * int(position) / self.totalFileCount)
			
			self.queue.put( refresh )
	
		def done(self, fail):
			self.fail = fail
			# print("Done")

	def start(self):
		self.thread = threading.Thread(target=self.runInThread)
		self.thread.start()
		
		self.queue.put(GuiPart.StartRefresh())
		
		self.periodicCall()
	
	def cancel(self):
		self.callback.response=P4.OutputHandler.CANCEL
	
	def periodicCall(self):
		self.gui.processIncoming()
		
		if self.finished:
			self.queue.put(GuiPart.FinishedRefresh())
		
		self.after(100, self.periodicCall)
	
	def quit(self):
		import sys
		sys.exit(0)
	
	def runInThread(self):
		with self.p4.connect():
			args = ['-q']
			if self.myOptions.syncOptions: # is None if no options specified
				args += self.myOptions.syncOptions
			args += self.myOptions.filepaths

			self.callback = P4Sync.Callback(self.queue)			
			result = self.p4.run_sync(args, progress=self.callback, handler=self.callback, exception_level=0)
		self.finished = True
	
if __name__ == '__main__':
	p4sync = P4Sync()
	p4sync.mainloop()