# -*- coding: utf-8 -*-
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2003-2005  Donald N. Allingham
# Copyright (C) 2008       Brian G. Matherly
# Copyright (C) 2010       Andrew I Baznikin
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#

# Written by Alex Roitman, largely based on relationship.py by Don Allingham
# and on valuable input from Frode Jemtland
# Tilraun til aðlögunar: Sveinn í Felli, 02/2016
"""
Icelandic-Specific classes for relationships.
"""

#-------------------------------------------------------------------------
#
# Gramps modules
#
#-------------------------------------------------------------------------

from gramps.gen.lib import Person
import gramps.gen.relationship

#-------------------------------------------------------------------------

_cousin_level = [ "", "", #brother/sister, frændi/frænka -- these are taken care of separately
"þremenningur", "fjórmenningur", "fimmmenningur",
"sexmenningur", "sjömenningur", "áttmenningur",
"nímenningur", "tímenningur", "ellefumenningur",
"tólfmenningur", "þrettánmenningur", "fjórtánmenningur",
"fimtánmenningur", "sekstenmenning", "syttenmenning",
"attenmenning", "nittenmenning", "tyvemenning" ]

_cousin_terms = _cousin_level + ["frændi", "frænka"]
#-------------------------------------------------------------------------
#
#
#
#-------------------------------------------------------------------------
class RelationshipCalculator(gramps.gen.relationship.RelationshipCalculator):
    """
    RelationshipCalculator Class
    """

    def __init__(self):
        gramps.gen.relationship.RelationshipCalculator.__init__(self)

    def get_parents(self, level):
        if level == 0:
            return "foreldri"
        else:
            return "forfaðir í %d-tu kynslóð" % (level+1)

    def get_cousin(self, level):
        if level > len(_cousin_level)-1:
            # FIXME: use Norwegian term term here,
            # UPDATED by Frode: unsure about the expretion "en fjern slektning", should it be just "fjern slektning".
            # Need to see it used in the program to get the understanding.
            return "fjarskyldur ættingi"
        else:
            return _cousin_level[level]

    def pair_up(self, rel_list):
        result = []
        item = ""
        for word in rel_list[:]:
            if not word:
                continue
            if word in _cousin_terms:
                if item:
                    result.append(item)
                    item = ""
                result.append(word)
                continue
            if item:
                if word == 'synir':
                    word = 'sonur'
                result.append(item + word)
                item = ""
            else:
                item = word
        if item:
            result.append(item)
        gen_result = [ item + 's' for item in result[0:-1] ]
        return ' '.join(gen_result+result[-1:])

    def get_direct_ancestor(self, person, rel_string):
        result = []
        for ix in range(len(rel_string)):
            if rel_string[ix] == 'f':
                result.append('faðir')
            else:
                result.append('móðir')
        return self.pair_up(result)

    def get_direct_descendant(self, person, rel_string):
        result = []
        for ix in range(len(rel_string)-2, -1, -1):
            if rel_string[ix] == 'f':
                result.append('synir')
            else:
                result.append('dætur')
        if person == Person.MALE:
            result.append('sonur')
        else:
            result.append('dóttir')
        return self.pair_up(result)

    def get_ancestors_cousin(self, person, rel_string_long, rel_string_short):
        result = []
        removed = len(rel_string_long)-len(rel_string_short)
        level = len(rel_string_short)-1
        for ix in range(removed):
            if rel_string_long[ix] == 'f':
                result.append('faðir')
            else:
                result.append('móðir')
        if level > 1:
            result.append(self.get_cousin(level))
        elif person == Person.MALE:
            result.append('frændi')
        else:
            result.append('frænka')
        main_string = self.get_two_way_rel(person, rel_string_short, rel_string_long)
        aux_string = self.pair_up(result)
        return "%s (%s)" % (main_string, aux_string)

    def get_cousins_descendant(self, person, rel_string_long, rel_string_short):
        result = []
        aux_string = ""
        removed = len(rel_string_long)-len(rel_string_short)-1
        level = len(rel_string_short)-1
        if level > 1:       # Cousin terms without gender
            result.append(self.get_cousin(level))
        elif level == 1:    # gender-dependent fetter/kusine
            if rel_string_long[removed] == 'f':
                result.append('fændi')
            else:
                result.append('frænka')
        elif rel_string_long[removed] == 'f':
            result.append('bróðir')
        else:
            result.append('systir')
        for ix in range(removed-1, -1, -1):
            if rel_string_long[ix] == 'f':
                result.append('sonur')
            else:
                result.append('dóttir')
        if person == Person.MALE:
            result.append('sonur')
        else:
            result.append('dóttir')
        main_string = self.get_two_way_rel(person, rel_string_long, rel_string_short)
        if level:
            aux_string = " (%s)" % self.pair_up(result)
        return "%s%s" % (main_string, aux_string)

    def get_ancestors_brother(self, rel_string):
        result = []
        for ix in range(len(rel_string)-1):
            if rel_string[ix] == 'f':
                result.append('föður')
            else:
                result.append('móður')
        result.append('bróðir')
        return self.pair_up(result)

    def get_ancestors_sister(self, rel_string):
        result = []
        for ix in range(len(rel_string)-1):
            if rel_string[ix] == 'f':
                result.append('föður')
            else:
                result.append('móður')
        result.append('systir')
        return self.pair_up(result)

    def get_two_way_rel(self, person, first_rel_string, second_rel_string):
        result = []
        for ix in range(len(second_rel_string)-1):
            if second_rel_string[ix] == 'f':
                result.append('föður')
            else:
                result.append('móður')
        if len(first_rel_string)>1:
            if first_rel_string[-2] == 'f':
                result.append('bróðir')
            else:
                result.append('systir')
            for ix in range(len(first_rel_string)-3, -1, -1):
                if first_rel_string[ix] == 'f':
                    result.append('sønne')
                else:
                    result.append('datter')
            if person == Person.MALE:
                result.append('sonur')
            else:
                result.append('dóttir')
        else:
            if person == Person.MALE:
                result.append('bróðir')
            else:
                result.append('systir')
        return self.pair_up(result)

    def get_relationship(self,
                        secondRel, firstRel, orig_person, other_person):

        common = ""
        if not firstRel:
            if not secondRel:
                return ('', common)
            else:
                return (self.get_direct_ancestor(other_person, secondRel), common)
        elif not secondRel:
            return (self.get_direct_descendant(other_person, firstRel), common)
        elif len(firstRel) == 1:
            if other_person == Person.MALE:
                return (self.get_ancestors_brother(secondRel), common)
            else:
                return (self.get_ancestors_sister(secondRel), common)
        elif len(secondRel) >= len(firstRel):
            return (self.get_ancestors_cousin(other_person, secondRel, firstRel), common)
        else:
            return (self.get_cousins_descendant(other_person, firstRel, secondRel), common)

    def get_single_relationship_string(self, Ga, Gb, gender_a, gender_b,
                                    reltocommon_a, reltocommon_b,
                                    only_birth=True,
                                    in_law_a=False, in_law_b=False):
        return self.get_relationship(reltocommon_a, reltocommon_b, gender_a, gender_b)[0];

    def get_sibling_relationship_string(self, sib_type, gender_a, gender_b,
                                        in_law_a=False, in_law_b=False):
        return self.get_two_way_rel(gender_b, "", "")

if __name__ == "__main__":

    # Test function. Call it as follows from the command line (so as to find
    #        imported modules):
    #    export PYTHONPATH=/path/to/gramps/src
    # python src/plugins/rel/rel_no.py
    # (Above not needed here)

    """TRANSLATORS, copy this if statement at the bottom of your
        rel_xx.py module, and test your work with:
        python src/plugins/rel/rel_xx.py
    """
    from gramps.gen.relationship import test
    RC = RelationshipCalculator()
    test(RC, True)
