#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Base import
import logging
from gettext import gettext as _


# Sugar import
from sugar3.activity import activity
from sugar3.presence import presenceservice

from sugar3.graphics.toolbarbox import ToolbarBox

from sugar3.bundle.activitybundle import ActivityBundle
from sugar3.activity.widgets import ActivityToolbarButton
from sugar3.activity.widgets import StopButton
from sugar3.graphics.toolbutton import ToolButton
from sugar3.graphics.toolbarbox import ToolbarButton

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import GObject
from gi.repository import Gdk
from gi.repository import GdkPixbuf
from gi.repository import Gtk
from gi.repository import Pango
from gi.repository import PangoCairo
from urlparse import urlparse
from vboxcolor import VBoxColor

# Local import
from src.person import Person
from src.union import Union
from src.tree import Tree
from src.tree import empty_tree, sample_family1, sample_family2
import src.const as const


# Init position
const.tree_initx = (875 - const._person_width) / 2
const.tree_inity = (780 - const._person_height) / 2
const.bg_color = (0.7, 0.7, 0.7)

		
# Init log	
_logger = logging.getLogger('roots-activity')
_logger.setLevel(logging.DEBUG)
_consolehandler = logging.StreamHandler()
_consolehandler.setLevel(logging.DEBUG)
_consolehandler.setFormatter(logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s"))
_logger.addHandler(_consolehandler)


# Init presence
presenceService = presenceservice.get_instance()
buddyName = presenceService.get_owner().props.nick


# Activity class
class RootsActivity(activity.Activity):

	def __init__(self, handle):
		"Set up the activity."
		
		# Sugar init
		activity.Activity.__init__(self, handle)
		
		# Until we support it, turn off sharing
		self.max_participants = 1

		# Create the toolbars
		toolbox = ToolbarBox()
		activity_button = ActivityToolbarButton(self)
		toolbox.toolbar.insert(activity_button, 0)
		activity_button.show()
		toolbarview = Gtk.Toolbar()
		view_toolbar_button = ToolbarButton(
			label=_('View'),
			page=toolbarview,
			icon_name='toolbar-view')
		toolbox.toolbar.insert(view_toolbar_button, -1)
		toolbarsample = Gtk.Toolbar()
		sample_toolbar_button = ToolbarButton(
			label=_('Samples'),
			page=toolbarsample,
			icon_name='sample1')
		toolbox.toolbar.insert(sample_toolbar_button, -1)
		toolbarentry = Gtk.Toolbar()
		self.entry_toolbar_button = ToolbarButton(
			label=_('Entry'),
			page=toolbarentry,
			icon_name='cell-format')
		toolbox.toolbar.insert(self.entry_toolbar_button, -1)
		self.entry_toolbar_button.connect('clicked', self.entry_toolbar_clicked)
		self.set_toolbar_box(toolbox)
		toolbox.show()

		# And add the buttons
		tool = ToolButton('zoom-out')
		tool.set_tooltip(_('Zoom out'))
		tool.set_accelerator(_('<ctrl>minus'))
		tool.connect('clicked', self.zoom_out)
		tool.show()
		toolbarview.insert(tool, -1)
		tool = ToolButton('zoom-in')
		tool.set_tooltip(_('Zoom in'))
		tool.set_accelerator(_('<ctrl>equal'))
		tool.connect('clicked', self.zoom_in)
		tool.show()
		toolbarview.insert(tool, -1)
		toolbarview.show()

		tool = ToolButton('emptytree')
		tool.set_tooltip(_('Empty tree'))
		tool.connect('clicked', self.emptytree)
		tool.show()
		toolbarsample.insert(tool, -1)
		tool = ToolButton('sample1')
		tool.set_tooltip(_('Test'))
		tool.connect('clicked', self.sample1)
		tool.show()
		toolbarsample.insert(tool, -1)
		tool = ToolButton('sample2')
		tool.set_tooltip(_('Napoléon'))
		tool.connect('clicked', self.sample2)
		tool.show()
		toolbarsample.insert(tool, -1)
		toolbarsample.show()

		separator = Gtk.SeparatorToolItem()
		separator.props.draw = False
		separator.set_expand(True)
		separator.show()
		toolbox.toolbar.insert(separator, -1)
		stop_button = StopButton(self)
		stop_button.props.accelerator = '<Ctrl>q'
		toolbox.toolbar.insert(stop_button, -1)
		stop_button.show()

		button = ToolButton('edit-paste')
		button.set_tooltip(_("Click here to paste an image"))
		button.connect('clicked', self.image_release_button)
		button.show()
		toolbarentry.insert(button, -1)
		self.detail_name = Gtk.Entry()
		self.detail_name.set_size_request(320, 50)
		self.detail_name.connect("changed", self.detail_changed)
		self.detail_name.show()
		toolitem = Gtk.ToolItem()
		toolitem.add(self.detail_name)
		toolbarentry.insert(toolitem, -1)
		toolitem.show()
			
		chkbox = Gtk.HBox(False)
		self.detail_chkmale = Gtk.RadioButton(None, _("Male"))
		self.detail_chkmale.connect("toggled", self.sexradio_checked, 'M')
		self.detail_chkmale.set_active(True)
		self.detail_chkmale.show()
		self.detail_chkfemale = Gtk.RadioButton(self.detail_chkmale, _("Female"))
		self.detail_chkfemale.join_group(self.detail_chkmale)
		self.detail_chkfemale.connect("toggled", self.sexradio_checked, 'F')		
		self.detail_chkfemale.show()
		chkbox.add(self.detail_chkmale)
		chkbox.add(self.detail_chkfemale)

		toolitem = Gtk.ToolItem()
		toolitem.add(chkbox)
		toolitem.show()		
		toolbarentry.insert(toolitem, -1)
		toolitem.show()
		self.detail_btnaddparent = ToolButton('addparent')
		self.detail_btnaddparent.set_tooltip(_('Add parents'))
		self.detail_btnaddparent.connect('clicked', self.addparent_clicked)
		self.detail_btnaddparent.show()
		toolbarentry.insert(self.detail_btnaddparent, -1)
		self.detail_btnaddbrother = ToolButton('addbrother')
		self.detail_btnaddbrother.set_tooltip(_('Add brother'))
		self.detail_btnaddbrother.connect('clicked', self.addbrother_clicked)
		self.detail_btnaddbrother.show()
		toolbarentry.insert(self.detail_btnaddbrother, -1)
		self.detail_btnaddunion = ToolButton('addunion')
		self.detail_btnaddunion.set_tooltip(_('Add union'))
		self.detail_btnaddunion.connect('clicked', self.addunion_clicked)
		self.detail_btnaddunion.show()
		toolbarentry.insert(self.detail_btnaddunion, -1)
		self.detail_btnaddchild = ToolButton('addchild')
		self.detail_btnaddchild.set_tooltip(_('Add child'))
		self.detail_btnaddchild.connect('clicked', self.addchild_clicked)
		self.detail_btnaddchild.show()
		toolbarentry.insert(self.detail_btnaddchild, -1)
		self.detail_btndelete = ToolButton('delete')
		self.detail_btndelete.set_tooltip(_('Delete'))
		self.detail_btndelete.connect('clicked', self.delete_clicked)
		self.detail_btndelete.show()
		toolbarentry.insert(self.detail_btndelete, -1)
                        
		# Create drawing area
		self.zoomlevel = 0
		self.area = Gtk.DrawingArea()
		self.area.set_size_request(875, 780)
		self.area.set_events(Gdk.EventMask.BUTTON_PRESS_MASK|Gdk.EventMask.BUTTON_RELEASE_MASK|Gdk.EventMask.BUTTON_MOTION_MASK|Gdk.EventMask.POINTER_MOTION_MASK)
		self.area.connect("draw", self.area_expose_cb)
		self.area.connect("button_press_event", self.press_button)
		self.area.connect("button_release_event", self.release_button)
		self.area.connect("motion_notify_event", self.mouse_move)
		self.moving = False
				
		# Create detail view
		self.box = Gtk.HBox(False)
		vbox = Gtk.VBox(False, 10)
		vbox.set_size_request(200, 780)
		self.imagezone = Gtk.Image()
		self.imagezone.set_size_request(200, 200)
		self.image_paste = GdkPixbuf.Pixbuf.new_from_file('images/edit-paste.svg')
		self.image_hand1 = GdkPixbuf.Pixbuf.new_from_file('images/hand1.png')
		self.imagezone.set_from_pixbuf(self.image_hand1)
		self.detail_description = Gtk.TextView()
		self.detail_description.set_wrap_mode(Gtk.WrapMode.WORD)
		self.detail_description.set_size_request(200, 200)
		self.detail_description.get_buffer().connect("changed", self.description_changed)
		self.detail_description.show()
		vbox.show()
		vbox.pack_start(self.imagezone, False, True, 10)
		vbox.pack_start(self.detail_description, True, True, 10)
		self.box.pack_start(vbox, True, True, 0)
		self.box.pack_start(self.area, True, True, 0)
		self.set_canvas(self.box)

		# Create empty tree
		self.tree = None
		self.selected = None
		self.init_tree(empty_tree(buddyName))
		
		# Show all
		self.show_all()
		self.area.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.ARROW))
		
		
	def create_button(self, label, image, callback):
		"Create a bitmap button"
		button = Gtk.Button()
		btncontainer = Gtk.HBox()
		btnimage = Gtk.Image()
		btnimage.set_from_pixbuf(GdkPixbuf.Pixbuf.new_from_file(image))
		btncontainer.pack_start(btnimage, False, False, 2)
		btncontainer.pack_start(Gtk.Label(label), False, False, 10)
		button.add(btncontainer)
		button.connect("clicked", callback)
		
		return button
		
		
	def init_tree(self, tree):
		"Create and init a tree"
		self.zoomlevel = 0
		self.tree = tree
		(self.initx, self.inity) = (const.tree_initx, const.tree_inity)
		self.tree.set_position(self.initx, self.inity)
		self.show_detail(None)
		self.redraw()
                self.entry_toolbar_button.set_expanded(True)		
		
	def set_center(self, person):
		"Set the center of the draw on a person"
		rect = self.area.get_allocation()
		dx = (rect.width/2) - self.tree.root.x0 - (person.x0 - self.tree.root.x0) - (person.x1 - person.x0)/2
		dy = (rect.height/2) - self.tree.root.y0 - (person.y0 - self.tree.root.y0) - (person.y1 - person.y0)/2
		self.translate(dx, dy)
		
	
	def show_detail(self, person):
		"Show detail information for a person"
		
		# Change selection
		if self.selected is not None:
			self.selected.isselected = False
		self.selected = person
		
		
		# No selection
		if person == None:
			self.detail_name.set_sensitive(False)
                        self.detail_description.set_sensitive(False)
			self.detail_name.set_text("")
                        self.detail_description.get_buffer().set_text("")
			self.detail_chkmale.set_active(True)
			self.detail_chkmale.set_sensitive(False)
			self.detail_chkfemale.set_sensitive(False)
			self.detail_btnaddparent.set_sensitive(False)
			self.detail_btnaddbrother.set_sensitive(False)
			self.detail_btnaddunion.set_sensitive(False)
			self.detail_btnaddchild.set_sensitive(False)
			self.detail_btndelete.set_sensitive(False)
			self.imagezone.set_from_pixbuf(self.image_hand1)
			return
			
		# A node is selected
		person.isselected = True
		self.detail_name.set_sensitive(True)
		self.detail_name.grab_focus()
                self.detail_description.set_sensitive(True)
                self.detail_description.get_buffer().set_text(person.description)
		self.detail_name.set_text(person.name)
		if person.sex == 'M':
			self.detail_chkmale.set_active(True)
		else:
			self.detail_chkfemale.set_active(True)
		if person.image is None:
			self.imagezone.set_from_pixbuf(self.image_paste)
		else:
			self.imagezone.set_from_pixbuf(person.image)
		
		# Compute button status
		checkable = (len(person.unions) == 0)
		self.detail_chkmale.set_sensitive(checkable)
		self.detail_chkfemale.set_sensitive(checkable)
		self.detail_btnaddchild.set_sensitive(len(person.unions) > 0)
		unionscount = len(person.unions)
		childcount = person.child_count()
		isfamily = self.tree.is_family(person)
		isdescendant = self.tree.is_descendant(person)
		isascendant = self.tree.is_ascendant(person)
		isroot = (self.tree.root == person)
		if person == self.tree.root:
			deletable = False
		elif unionscount == 0:
			deletable = True
		elif unionscount > 1:
			deletable = False
		elif unionscount == 1 and isdescendant:
			deletable = False
		elif childcount > 0:
			if isascendant  and (person.parents is None) and (childcount == 1):
				deletable = True
			else:
				deletable = False
		else:
			deletable = True
		self.detail_btndelete.set_sensitive(deletable)
		self.detail_btnaddunion.set_sensitive(isfamily)
		self.detail_btnaddparent.set_sensitive(person.parents is None and (isascendant or isroot))
		self.detail_btnaddbrother.set_sensitive(person.parents is not None)
		
		
	def area_expose_cb(self, area, event):
		"Draw tree event"
		
		# Create context then draw tree inside
		gc = self.area.get_window().cairo_create()
		pc = self.create_pango_context()
		self.tree.draw(gc, pc)
		gc.stroke()	

		
	def press_button(self, widget, event):
		"Mouse button clicked, detail a person or start the moving mode"
		
		# Look if click in a person
		p = self.tree.person_at(event.x, event.y)
		if p is not None:
			self.set_center(p)
			self.show_detail(p)
			self.moving = False
			return
		
		# Not found, pass in moving mode
		self.show_detail(None)
		self.movingStart = (event.x, event.y)
		self.moving = True
		self.area.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.FLEUR))
				
	
	def translate(self, dx, dy):
		# Translate all the tree from deltax, deltay
		(self.initx, self.inity) = (self.initx+dx, self.inity+dy)
		self.tree.translate(dx, dy)
		self.redraw()
		
				
	def mouse_move(self, widget, event):
		"Mouse move event, in moving mode translate draw if in moving mode else change cursor on person"
		
		# In moving mode ?
		if self.moving:
			# Compute translation
			self.translate(event.x-self.movingStart[0], event.y-self.movingStart[1])
			self.movingStart = (event.x, event.y)
		
		else:
			# Look if a person is under the cursor
			p = self.tree.person_at(event.x, event.y)
			if p is not None:
				# Found one, change cursor
				self.area.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.HAND1))
				return
				
			# Not found, set standard cursor
			self.area.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.ARROW))
			
		
	def release_button(self, widget, event):
		"Mouse button released, stop moving mode"
		
		self.area.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.ARROW))
		self.moving = False

		
	def zoom_in(self, event):
		"ToolBar button zoom in clicked"
		self.zoomlevel = self.zoomlevel + 1
		self.tree.scale(20)
		self.redraw()
		
		
	def zoom_out(self, event):
		"ToolBar button zoom out clicked"
		if self.zoomlevel == -3:
			return
		self.zoomlevel = self.zoomlevel - 1
		self.tree.scale(-20)
		self.redraw()
		
		
	def detail_changed(self, event):
		"Textfield for the detail has changed, change the matching person name"
		if self.selected == None:
			self.redraw()
			return
		self.selected.name = self.detail_name.get_text()
		self.redraw()
		
		
	def description_changed(self, event):		
		"Description has changed, change the matching person description"
		if self.selected == None:
			return
		buffer = self.detail_description.get_buffer()
                self.selected.description = \
                    buffer.get_text(buffer.get_start_iter(), buffer.get_end_iter(), True)
		self.redraw()
	
	
	def sexradio_checked(self, widget, data):
		"Radio button for sex checked, change sex for the selected person"
		if self.selected is not None:
			self.selected.sex = data
		self.redraw()
		
	
	def addparent_clicked(self, event):
		"Add parent clicked"
		self.zoomlevel = 0
		(x, y) = (self.tree.root.x0, self.tree.root.y0)
		dad = self.tree.Person("", "M")
		mum = self.tree.Person("", "F")
		self.tree.Union(dad, mum).append_child(self.selected)
		self.tree.set_position(x, y)
		self.set_center(dad)
		self.show_detail(dad)
		self.redraw()
		
	
	def addbrother_clicked(self, event):
		"Add brother clicked"
		self.zoomlevel = 0
		newchild = self.tree.Person("", "M")
		self.selected.parents.append_child(newchild)
		self.tree.set_position(self.tree.root.x0, self.tree.root.y0)
		self.set_center(newchild)
		self.show_detail(newchild)
		self.redraw()
		
		
	def addchild_clicked(self, event):
		"Add child clicked"
		self.zoomlevel = 0
		newchild = self.tree.Person("", "M")
		self.selected.unions[0].append_child(newchild) # HACK: Child is add to the first union
		self.tree.set_position(self.tree.root.x0, self.tree.root.y0)
		self.set_center(newchild)
		self.show_detail(newchild)
		self.redraw()
		
		
	def addunion_clicked(self, event):
		"Add union clicked"
		self.zoomlevel = 0
		if self.selected.sex == "M":
			male = self.selected
			female = newunion = self.tree.Person("", "F")
		else:
			male = newunion = self.tree.Person("", "M")
			female = self.selected	
		self.tree.Union(male, female)
		self.tree.set_position(self.tree.root.x0, self.tree.root.y0)
		self.set_center(newunion)
		self.show_detail(newunion)
		self.redraw()
		

	def delete_clicked(self, event):
		"Delete button clicked"
		
		# Delete as union or person
		if self.tree.is_ascendant(self.selected)  and (self.selected.parents is None) and (self.selected.child_count() == 1):
			self.tree.remove_union(self.selected.unions[0])
		else:
			self.tree.remove(self.selected)

		# Recompute and redraw
		self.zoomlevel = 0
		self.tree.set_position(self.tree.root.x0, self.tree.root.y0)
		self.show_detail(None)
		
		
	def entry_toolbar_clicked(self, event):
		self.box.queue_draw()


	def redraw(self):
		"Redraw area"
		self.area.queue_draw()
		
		
	def image_release_button(self, widget, event=None):
		"Mouse button released on the image, drop image"
		
		if self.selected is None:
			return
				
		# Get image from clipboard
                _logger.debug('Before clipboard')
		clipboard = Gtk.Clipboard()
		image = None
		if True: #clipboard.wait_is_image_available():
                        _logger.debug('wait_is_image_available() is True')
			image = clipboard.wait_for_image()
			if image is None:
				return
			
		# HACK: Get image from URIs list
		else:
                        _logger.debug('wait_is_image_available() is False')
			selection = clipboard.wait_for_contents('text/uri-list')
			if selection is None:
				_logger.debug('selection is none')
				return
			for uri in selection.get_uris():
				image = GdkPixbuf.Pixbuf.new_from_file(urlparse(uri).path)
				break
			if image is None:
				return

		# Match image to rectangle
		rect = self.imagezone.get_allocation()
		image_width = image.get_width()
		image_height = image.get_height()
                _logger.debug(str(image_width)+'x'+str(image_height))
		if image_width > rect.width or image_height > rect.height:
			if image_width > image_height:
				target_width = rect.width
				target_height = (image_height * target_width) / image_width
			else:
				target_height = rect.height
				target_width = (image_width * target_height) / image_height
			image = image.scale_simple(target_width, target_height, Gdk.INTERP_HYPER)
		self.selected.image = image
		self.redraw()
	
	
	def emptytree(self, event):
		"Init with an empty tree"
		self.init_tree(empty_tree(buddyName))

		
	def sample1(self, event):
		"Init with a sample tree"
		self.init_tree(sample_family1())

		
	def sample2(self, event):
		"Init with a sample tree"
		self.init_tree(sample_family2())
		
		
	def write_file(self, file_path):
		"Called when activity is saved, save the tree in the file"
		file = open(file_path, 'wb')
		try:
			self.tree.write_to(file)
		finally:
			file.close()		
		
	
	def read_file(self, file_path):
		"Called when activity is loaded, load the tree from the file"
		file = open(file_path, 'rb')
		try:
			tree = Tree().read_from(file)
		finally:
			file.close()
		self.init_tree(tree)