# -*- coding: utf-8 -*-
#
#Copyright (C) 2010-2012, Yader Velasquez
#
#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.

import gtk
import pygtk
import re
from database import DataBase
from model import ComboBoxModel, TasksModel
from sugar.activity import activity, widgets
from gettext import gettext as _
from datetime import date, datetime
import logging
import pango

log = logging.getLogger('Calendario-Log')

class CalendarioActivity(activity.Activity):


    def __init__(self, handle):
        '''Constructor'''
        activity.Activity.__init__(self, handle)
        self.main_container = gtk.HBox()
        toolbox = widgets.ActivityToolbox(self)
        self.set_toolbar_box(toolbox)
        toolbox.show()
        self.path = self.get_activity_root()
        ###left side###
        self.left_container = gtk.VBox()
        d = datetime.today()
        self.label_date = gtk.Label(d.strftime("%d %B %Y"))
        self.calendar = gtk.Calendar()
        self.calendar.connect('day-selected', self._day_selected_cb)
        self.calendar.connect('month-changed', self._mark_day_cb)
        self.calendar.connect('next-year', self._mark_day_cb)
        self.calendar.connect('prev-year', self._mark_day_cb)
        self.mark_day()

        self.tool_frame = gtk.Frame(_("Tools"))
        self.reminder_expander = gtk.Expander(_("Tasks reminder"))
        self.query_expander = gtk.Expander(_("View by"))
        self.tool_box = gtk.VBox()
        
        #reminder
        self.scroll_reminder = gtk.ScrolledWindow()
        self.scroll_reminder.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        self.scroll_reminder.set_size_request(-1, 170)
        self.reminder_list = gtk.TreeView()
        self.scroll_reminder.add(self.reminder_list)
        self.reminder_expander.add(self.scroll_reminder)
        
        #query
        self.query_box = gtk.VBox()
        self.label_q_priority = gtk.Label(_("Priority"))
        self.label_q_category = gtk.Label(_("Category"))

        comboBoxModel = ComboBoxModel()
        cat_model = comboBoxModel.get_category_model()
        pri_model = comboBoxModel.get_priority_model()
        cell = gtk.CellRendererText()
       
        self.combobox_q_priority = gtk.ComboBox()
        self.combobox_q_priority.pack_start(cell, True)
        self.combobox_q_priority.add_attribute(cell, 'text', 0)
        self.combobox_q_category = gtk.ComboBox()
        self.combobox_q_category.pack_start(cell, True)
        self.combobox_q_category.add_attribute(cell, 'text', 0)
        self.combobox_q_category.set_model(cat_model)
        self.combobox_q_priority.set_model(pri_model)
        self.filter_button = gtk.Button(_('Filter'))
        self.filter_button.connect('clicked', self._filter_query_cb)

        self.query_box.pack_start(self.label_q_priority, False)
        self.query_box.pack_start(self.combobox_q_priority, False)
        self.query_box.pack_start(self.label_q_category, False)
        self.query_box.pack_start(self.combobox_q_category, False)
        self.query_box.pack_start(self.filter_button, True, True, 5)
        self.query_expander.add(self.query_box)
        
        self.tool_box.pack_start(self.reminder_expander, False)
        self.tool_box.pack_start(self.query_expander, False)
        self.tool_frame.add(self.tool_box)
        self.left_container.pack_start(self.label_date, False, False, 5)
        self.left_container.pack_start(self.calendar, False)
        self.left_container.pack_start(self.tool_frame, True, True, 5)

        ###right side###
        self.right_container = gtk.VBox()
        self.tasks_frame = gtk.Frame(_("Tasks list"))
        self.scroll_tasks = gtk.ScrolledWindow()
        self.scroll_tasks.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        self.tasks_list = gtk.TreeView()
        self.get_tasks()
        self.add_columns()
        self.scroll_tasks.add(self.tasks_list)
        self.tasks_frame.add(self.scroll_tasks)

        #options
        self.options_expander = gtk.Expander(_("Options"))
        self.options_box = gtk.HBox()
        self.label_b_priority = gtk.Label(_("Priority"))
        self.combobox_priority = gtk.ComboBox()
        self.combobox_priority.pack_start(cell, True)
        self.combobox_priority.add_attribute(cell, 'text', 0)
        self.label_b_category = gtk.Label(_("Category"))
        self.combobox_category = gtk.ComboBox()
        self.combobox_category.pack_start(cell, True)
        self.combobox_category.add_attribute(cell, 'text', 0)
        self.combobox_category.set_model(cat_model)
        self.combobox_priority.set_model(pri_model)
        
        self.priority_box = gtk.VBox()
        self.priority_box.pack_start(self.label_b_priority)
        self.priority_box.pack_start(self.combobox_priority)
        self.category_box = gtk.VBox()
        self.category_box.pack_start(self.label_b_category)
        self.category_box.pack_start(self.combobox_category)
        self.options_box.pack_start(self.category_box, True, True, 5)
        self.options_box.pack_start(self.priority_box, True, True, 5)
        self.options_expander.add(self.options_box)

        #input
        self.scroll_text = gtk.ScrolledWindow()
        self.scroll_text.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        self.text_input = gtk.TextView()
        self.text_input.set_size_request(0, 80)
        self.scroll_text.add(self.text_input)
        self.save_button = gtk.Button(_("Add new"))
        self.save_button.connect('clicked', self._save_cb)
        self.remove_button = gtk.Button(_("Remove"))
        self.remove_button.connect('clicked', self._delete_row_cb)
        self.buttons_box = gtk.VBox()
        self.buttons_box.pack_start(self.save_button, False)
        self.buttons_box.pack_start(self.remove_button, False)
        self.input_box = gtk.HBox()
        self.input_box.pack_start(self.scroll_text, True, True, 5)
        self.input_box.pack_start(self.buttons_box, False)


        self.right_container.pack_start(self.tasks_frame, True, True, 5)
        self.right_container.pack_start(self.options_expander, False, False)
        self.right_container.pack_start(self.input_box, False, False, 5)

        self.main_container.pack_start(self.left_container, False, False, 5) 
        self.main_container.pack_start(self.right_container, True, True, 5)
        self.main_container.show_all()
        self.set_canvas(self.main_container)

    def get_tasks(self):
        '''Get the rows'''
        date_formated = date_format(self.calendar.get_date())
        db = DataBase(self.path)
        data = db.get(date_formated)
        reminder = db.get_reminder()
        db.close()
        tasks_model = TasksModel(data)
        reminder_model = TasksModel(reminder)
        self.tasks_list.set_model(tasks_model.get_model())
        self.reminder_list.set_model(reminder_model.get_model())

    def add_columns(self):
        '''Add columns to TreeView'''
        #for the tasks list
        cell_text = gtk.CellRendererText() 
        titles = (_('Tasks'), _('Category'), _('Priority'))
        i = 1
        for title in titles:
            #if the colum is the first
            if i == 1:            
                column = gtk.TreeViewColumn(title, cell_text, markup=i)
                #sizes commented are for emuler testing
                #column.set_min_width(300)
                column.set_min_width(440)
            else:
                column = gtk.TreeViewColumn(title, cell_text, text=i)
                #column.set_min_width(100)
                column.set_min_width(135)
            self.tasks_list.append_column(column)
            i = i + 1

        cell_toggle = gtk.CellRendererToggle()
        cell_toggle.connect('toggled', self._toggle_row_cb)
        column = gtk.TreeViewColumn('', cell_toggle, active=4)
        self.tasks_list.append_column(column)

        #for the reminder
        column = gtk.TreeViewColumn(titles[0], cell_text, text=1)
        self.reminder_list.append_column(column)
        column = gtk.TreeViewColumn(titles[2], cell_text, text=3)
        self.reminder_list.append_column(column)

    def mark_day(self):
        '''Mark the days of the month with tasks'''
        date = date_format(self.calendar.get_date())
        #just the month
        data = (date[3:],) 
        db = DataBase(self.path)
        day_list = db.get_days(data)
        db.close()
        for i in day_list:
            self.calendar.mark_day(int(i))

    def _save_cb(self, widget, data=None):
        '''Save a task'''
        input_buffer = self.text_input.get_buffer()
        start, end = input_buffer.get_bounds()
        text = input_buffer.get_text(start, end, False).strip()
        text = strip_tag(text)
        
        if len(text) > 0:
            input_buffer.set_text('')
            category = self.combobox_category.get_active()
            priority = self.combobox_priority.get_active()
            self.combobox_category.set_active(-1)
            self.combobox_priority.set_active(-1)
            date_formated = date_format(self.calendar.get_date())
            data = (text, category, priority, 0, date_formated)
            db = DataBase(self.path)
            db.add(data)
            db.close()
            self.get_tasks()
            self.mark_day()

    def _toggle_row_cb(self, widget, path):
        '''Toggle button row'''
        model = self.tasks_list.get_model()
        row_iter = model.get_iter(path)
        #row is a gtk.TreeModelRow()
        row = model[row_iter]
        row[4] = not row[4]
        #task, completed, id for the moment category and 
        #priority are excluded
        data = (row[4], row[0])
        db = DataBase(self.path)
        db.update(data)
        db.close()
        self.get_tasks()
        
    def _delete_row_cb(self, widget, data=None):
        '''Delete a row'''
        selection = self.tasks_list.get_selection()
        model, row_iter = selection.get_selected()
        row = model[row_iter]
        data = (row[0],)
        db = DataBase(self.path)
        db.delete(data)
        db.close()
        self.get_tasks()

    def _day_selected_cb(self, widget, data=None):
        '''Select new day'''
        date_formated = date_format(self.calendar.get_date())
        db = DataBase(self.path)
        data = db.get(date_formated)
        db.close()
        tasks_model = TasksModel(data)
        self.tasks_list.set_model(tasks_model.get_model())
    
    def _mark_day_cb(self, widget, data=None):
        '''Mark calendar days with bold font'''
        self.calendar.clear_marks()
        self.mark_day()

    def _filter_query_cb(self, widget, data=None):
        '''Query for filter the tasks'''
        category = self.combobox_q_category.get_active()
        priority = self.combobox_q_priority.get_active()
        self.combobox_q_category.set_active(-1)
        self.combobox_q_priority.set_active(-1)
        date_formated = date_format(self.calendar.get_date())
        data = (date_formated, category, priority)
        db = DataBase(self.path)
        tasks = db.filter_tasks(data)
        db.close()
        tasks_model = TasksModel(tasks)
        self.tasks_list.set_model(tasks_model.get_model())

    def close(self, skip_save=False):
        '''Override the close method'''
        activity.Activity.close(self, True)

    def read_file(self, filepath):
        pass

    def write_file(self, filepath):
        pass

class Task(object):
    '''Class represeting a task object'''
    def __init__(self, task_id, task, category, priority, completed):
        self.task_id = task_id;
        self.task = task
        self.category = category
        self.priority = priority
        self.completed = completed

    def get_task_id(self):
        return self.task_id

    def get_task(self):
        return self.task

    def get_category(self):
        return self.category

    def get_priority(self):
        return self.priority

    def get_complete(self):
        return self.completed

def date_format(cal_tuple):
    '''create a new format from the
    calendar get_date() return'''
    d = date(cal_tuple[0], cal_tuple[1] + 1, cal_tuple[2])
    return d.strftime("%d/%m/%Y")

def strike_string(string):
    '''Add pango markup'''
    return '<s>%s</s>' %(string)

def strip_tag(string):
    '''Delete all the tags'''
    return re.sub(r'<[^>]*?>', '', string)