#!/usr/bin/env python
# File: pyqso.py

#    Copyright (C) 2012 Christian Jacobs.

#    This file is part of PyQSO.

#    PyQSO 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.
#
#    PyQSO 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 PyQSO.  If not, see <http://www.gnu.org/licenses/>.

from gi.repository import Gtk, GObject
import logging
import optparse

# PyQSO modules
from adif import *
from logbook import *
from menu import *
   
# The PyQSO application class
class PyQSO(Gtk.Window):
   
   def __init__(self):
         
      # Call the constructor of the super class (Gtk.Window)
      Gtk.Window.__init__(self, title="PyQSO (development version)")
      
      self.set_size_request(500, 300)
      self.set_position(Gtk.WindowPosition.CENTER)
      # Kills the application if the close button is clicked
      # on the main window itself. 
      self.connect("delete-event", Gtk.main_quit)
      
      # Vertically aligned packing layout
      vbox = Gtk.VBox(spacing=6)
      self.add(vbox)
      
      # Set up menu bar and populate it
      menu = Menu(self, vbox)

      # SCROLLED WINDOW to host the list box defined below.
      sw = Gtk.ScrolledWindow()
      sw.set_shadow_type(Gtk.ShadowType.ETCHED_IN)
      sw.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
      vbox.pack_start(sw, True, True, 0)

      # LIST BOX for the radio log entries
      self.logbook = Logbook()
      self.treeview = Gtk.TreeView(self.logbook)
      self.treeview.set_grid_lines(Gtk.TreeViewGridLines.BOTH)
      sw.add(self.treeview)
      
      # The first column of the logbook will always be the unique record index.
      # Let's append this separately to the field names.
      renderer = Gtk.CellRendererText()
      renderer.set_property("editable", False)
      column = Gtk.TreeViewColumn("INDEX", renderer, text=0)
      column.set_resizable(True)
      column.set_min_width(50)
      self.treeview.append_column(column)
         
      # Set up column names for each selected field
      field_names = self.logbook.SELECTED_FIELD_NAMES_TYPES.keys()
      data_types = self.logbook.SELECTED_FIELD_NAMES_TYPES.values()
      for i in range(0, len(self.logbook.SELECTED_FIELD_NAMES_TYPES)):
         
         if(data_types[i] == "S"):
            renderer = Gtk.CellRendererText()
            renderer.set_property("editable", True)
            renderer.connect("edited", self.textcell_edited_callback, self.treeview, i+1)
            column = Gtk.TreeViewColumn(field_names[i], renderer, text=i+1)
            
         elif(data_types[i] == "B"):
            choices = Gtk.ListStore(str)
            for item in ["", "Yes", "No"]:
               choices.append([item])
            
            renderer = Gtk.CellRendererCombo()
            renderer.set_property("editable", True)
            renderer.set_property("model", choices)
            renderer.set_property("text-column", 0)
            renderer.connect("edited", self.booleancell_edited_callback, self.treeview, i+1)
            column = Gtk.TreeViewColumn(field_names[i], renderer, text=i+1)
            
         else:
            # Default to a text-based cell if the field name is unknown.
            renderer = Gtk.CellRendererText()
            renderer.set_property("editable", True)
            renderer.connect("edited", self.textcell_edited_callback, self.treeview, i+1)
            column = Gtk.TreeViewColumn(field_names[i], renderer, text=i+1)
         
         column.set_resizable(True)
         column.set_min_width(50)
         self.treeview.append_column(column)
      
      self.show_all()
      
      return

   def new_log(self, widget):
      self.logbook.records = []
      self.logbook.populate()
      return

   def open_log(self, widget):
      dialog = Gtk.FileChooserDialog("Open File",
                                    None,
                                    Gtk.FileChooserAction.OPEN,
                                    (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                                    Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
      filter = Gtk.FileFilter()
      filter.set_name("All ADIF files")
      filter.add_pattern("*.adi")
      filter.add_pattern("*.adx")
      dialog.add_filter(filter)
      
      response = dialog.run()
      if(response == Gtk.ResponseType.OK):
         path = dialog.get_filename()
      else:
         path = None
      dialog.destroy()
      
      if(path is None):
         logging.debug("No file path specified.")
         return
      
      adif = ADIF()
      self.logbook.records = adif.read(path)
      self.logbook.populate()
      
      return
      
   def save_log(self, widget):
      dialog = Gtk.FileChooserDialog("Save File",
                              None,
                              Gtk.FileChooserAction.SAVE,
                              (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                              Gtk.STOCK_SAVE, Gtk.ResponseType.OK))
                              
      response = dialog.run()
      if(response == Gtk.ResponseType.OK):
         path = dialog.get_filename()
      else:
         path = None
      dialog.destroy()
      
      if(path is None):
         logging.debug("No file path specified.")
         return
         
      adif = ADIF()
      adif.write(self.logbook.records, path)
      
      return
      
   def add_record_callback(self, widget):
      self.logbook.add_record()
      return
      
   def delete_record_callback(self, widget):
      # Get the selected row in the logbook and
      # delete it.
      selection = self.treeview.get_selection()
      selection.set_mode(Gtk.SelectionMode.SINGLE)
      (model, path) = selection.get_selected_rows()
      try:
         iter = model.get_iter(path[0])
         index = model.get_value(iter,0)
      except IndexError:
         logging.debug("Trying to delete a record, but there are no records in the logbook!")
         return
                          
      dialog = Gtk.MessageDialog(self, Gtk.DialogFlags.DESTROY_WITH_PARENT,
                                 Gtk.MessageType.QUESTION, Gtk.ButtonsType.YES_NO, 
                                 "Are you sure you want to delete record %d?" % index)
      response = dialog.run()
      if(response == Gtk.ResponseType.YES):
         self.logbook.delete_record(iter, index)
         
      dialog.destroy()
      return
      
   def textcell_edited_callback(self, widget, path, text, treeview, column_index):
      
      #TODO: Validate user input!
      
      # First update the Record object. In this case, path is the row number.
      column_name = treeview.get_column(column_index).get_title()
      self.logbook.records[int(path)].set_field(column_name, text)
      
      # And then the GTK TreeView (i.e. the logbook)
      self.logbook[path][column_index] = text
      
      return
      
   def booleancell_edited_callback(self, widget, path, text, treeview, column_index):

      # Boolean combo boxes require special treatment:
      # ADIF specification denotes True by the letter "Y" and False by the
      # letter "N"...
      if(text == "Yes"):
         text_for_record = "Y"
      elif(text == "No"):
         text_for_record = "N"
      else:
         text_for_record = ""
      column_name = treeview.get_column(column_index).get_title()
      self.logbook.records[int(path)].set_field(column_name, text_for_record)
   
      # Update the logbook using the actual text from the combo box.
      iter = self.logbook.get_iter(path)
      self.logbook[path][column_index] = text
      
      return
      
   def show_about(self, widget):
      about = Gtk.AboutDialog()
      about.set_program_name("PyQSO")
      about.set_version("Development version")
      about.set_authors(["Christian Jacobs"])
      about.set_license('''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/>.''')
      about.set_comments("PyQSO: A Python-based contact logging tool for amateur radio operators")
      about.run()
      about.destroy()
      return

      
if(__name__ == '__main__'):
   # Get any command line arguments
   parser = optparse.OptionParser()
   parser.add_option('-l', '--log', action="store_true", default=False, help='Enable logging. All log messages will be written to pyqso.log.')
   (options, args) = parser.parse_args()

   # Set up debugging output
   if(options.log):
      logging.basicConfig(level=logging.DEBUG, filename="pyqso.log", 
                        format="%(asctime)s %(levelname)s: %(message)s", 
                        datefmt="%Y-%m-%d %H:%M:%S")

   application = PyQSO() # Populate the main window and show it
   Gtk.main() # Start up the event loop!