#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2001       Jesper Zedlitz
# Copyright (C) 2004-2006  Donald Allingham
# Copyright (C) 2007       Johan Gonqvist <johan.gronqvist@gmail.com>
# Copyright (C) 2008       Brian G. Matherly
# Copyright (C) 2010       Jakim Friant
# Copyright (C) 2013       Paul Franklin
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

# $Id$

"""Reports/Text Reports /Number of Ancestors Report"""

#------------------------------------------------------------------------
#
# standard python modules
#
#------------------------------------------------------------------------
import copy
import math

#------------------------------------------------------------------------
#
# GRAMPS modules
#
#------------------------------------------------------------------------
from gramps.gen.const import GRAMPS_LOCALE as glocale
_ = glocale.translation.gettext
from gramps.gen.display.name import displayer as global_name_display
from gramps.gen.errors import ReportError
from gramps.gen.plug.menu import PersonOption
from gramps.gen.plug.docgen import (IndexMark, FontStyle, ParagraphStyle,
                                    FONT_SANS_SERIF, PARA_ALIGN_CENTER,
                                    INDEX_TYPE_TOC)
from gramps.gen.plug.report import Report
from gramps.gen.plug.report import utils as ReportUtils
from gramps.gen.plug.report import MenuReportOptions
from gramps.gen.plug.report import stdoptions

#------------------------------------------------------------------------
#
# NumberOfAncestorsReport
#
#------------------------------------------------------------------------
class NumberOfAncestorsReport(Report):
    """
    This report counts all the ancestors of the specified person.
    """
    def __init__(self, database, options, user):
        """
        Create the NumberOfAncestorsReport object that produces the report.
        
        The arguments are:

        database        - the GRAMPS database instance
        options         - instance of the Options class for this report
        user            - a gen.user.User() instance
        
        Menu options:
        name_format   - Preferred format to display names
        """
        Report.__init__(self, database, options, user)
        self.__db = database
        pid = options.menu.get_option_by_name('pid').get_value()
        self.__person = database.get_person_from_gramps_id(pid)
        if (self.__person == None) :
            raise ReportError(_("Person %s is not in the Database") % pid )

        # Copy the global NameDisplay so that we don't change application 
        # defaults.
        self._name_display = copy.deepcopy(global_name_display)
        name_format = options.menu.get_option_by_name("name_format").get_value()
        if name_format != 0:
            self._name_display.set_default_format(name_format)

        lang = options.menu.get_option_by_name('trans').get_value()
        self._locale = self.set_locale(lang)

    def write_report(self):
        """
        The routine that actually creates the report.
        At this point, the document is opened and ready for writing.
        """
        thisgen = {}
        all_people = {}
        total_theoretical = 0
        thisgen[self.__person.get_handle()]=1
        
        self.doc.start_paragraph("NOA-Title")
        name = self._name_display.display(self.__person)
        # feature request 2356: avoid genitive form
        title = self._("Number of Ancestors for %s") % name
        mark = IndexMark(title, INDEX_TYPE_TOC, 1)
        self.doc.write_text(title, mark)
        self.doc.end_paragraph()

        thisgensize = 1
        gen = 0
        while thisgensize > 0:
            thisgensize = 0
            if thisgen != {}:
                thisgensize = len(thisgen)
                gen += 1
                theoretical = math.pow(2, ( gen - 1 ) )
                total_theoretical += theoretical
                percent = '(%s%%)' % self._locale.format('%3.2f', 
                    ((sum(thisgen.values()) / theoretical ) * 100))
                
                # TC # English return something like:
                # Generation 3 has 2 individuals. (50.00%)
                text = self._locale.translation.ngettext(
                    "Generation %(generation)d has %(count)d individual. "
                        "%(percent)s",
                    "Generation %(generation)d has %(count)d individuals. "
                        "%(percent)s",
                    thisgensize) % {
                        'generation': gen,
                        'count': thisgensize,
                        'percent': percent}
                            
                self.doc.start_paragraph('NOA-Normal')
                self.doc.write_text(text)
                self.doc.end_paragraph()
                
            temp = thisgen
            thisgen = {}
            for person_handle, person_data in temp.items():
                person = self.__db.get_person_from_handle(person_handle)
                family_handle = person.get_main_parents_family_handle()
                if family_handle:
                    family = self.__db.get_family_from_handle(family_handle)
                    father_handle = family.get_father_handle()
                    mother_handle = family.get_mother_handle()
                    if father_handle:
                        thisgen[father_handle] = (
                            thisgen.get(father_handle, 0) + person_data
                            )
                        all_people[father_handle] = (
                            all_people.get(father_handle, 0) + person_data
                            )
                    if mother_handle:
                        thisgen[mother_handle] = (
                            thisgen.get(mother_handle, 0) + person_data
                            )
                        all_people[mother_handle] = (
                            all_people.get(mother_handle, 0) + person_data
                            )

        if( total_theoretical != 1 ):
            percent = '(%3.2f%%)' % (( sum(all_people.values()) 
                                        / (total_theoretical-1) ) * 100)
        else:
            percent = 0

        # TC # English return something like:
        # Total ancestors in generations 2 to 3 is 4. (66.67%) 
        text = self._("Total ancestors in generations %(second_generation)d to "
                 "%(last_generation)d is %(count)d. %(percent)s") % {
                 'second_generation': 2,
                 'last_generation'  : gen,
                 'count'            : len(all_people),
                 'percent'          : percent
                 }
                
        self.doc.start_paragraph('NOA-Normal')
        self.doc.write_text(text)
        self.doc.end_paragraph()

#------------------------------------------------------------------------
#
# NumberOfAncestorsOptions
#
#------------------------------------------------------------------------
class NumberOfAncestorsOptions(MenuReportOptions):
    """
    Defines options for the NumberOfAncestorsReport.
    """
    def __init__(self, name, dbase):
        MenuReportOptions.__init__(self, name, dbase)
        
    def add_menu_options(self, menu):
        """
        Add options to the menu for the Number of Ancestors report.
        """
        category_name = _("Report Options")
        
        pid = PersonOption(_("Center Person"))
        pid.set_help(_("The center person for the report"))
        menu.add_option(category_name, "pid", pid)    

        stdoptions.add_name_format_option(menu, category_name)

        stdoptions.add_localization_option(menu, category_name)

    def make_default_style(self, default_style):
        """Make the default output style for the Number of Ancestors Report."""
        font = FontStyle()
        font.set_size(16)
        font.set_type_face(FONT_SANS_SERIF)
        font.set_bold(1)
        para = ParagraphStyle()
        para.set_header_level(1)
        para.set_bottom_border(1)
        para.set_bottom_margin(ReportUtils.pt2cm(8))
        para.set_font(font)
        para.set_alignment(PARA_ALIGN_CENTER)
        para.set_description(_("The style used for the title of the page."))
        default_style.add_paragraph_style("NOA-Title", para)
        
        font = FontStyle()
        font.set_size(12)
        para = ParagraphStyle()
        para.set_font(font)
        para.set_description(_('The basic style used for the text display.'))
        default_style.add_paragraph_style("NOA-Normal", para)
