#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2010  Doug Blank <doug.blank@gmail.com>
#
# 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.
#

#-------------------------------------------------------------------------
#
# python modules
#
#-------------------------------------------------------------------------
from gi.repository import Gtk
import re

#-------------------------------------------------------------------------
#
# gramps modules
#
#-------------------------------------------------------------------------
from gramps.gen.const import GRAMPS_LOCALE as glocale
_ = glocale.translation.sgettext
from ..managedwindow import ManagedWindow
from ..display import display_help
from ..glade import Glade
from gramps.gen.simple import SimpleAccess
from gramps.gen.const import URL_MANUAL_SECT2

#-------------------------------------------------------------------------
#
# Constants
#
#-------------------------------------------------------------------------

WIKI_HELP_PAGE = URL_MANUAL_SECT2
WIKI_HELP_SEC = _('manual|Link_Editor')

WEB, EVENT, FAMILY, MEDIA, NOTE, PERSON, PLACE, REPOSITORY, SOURCE, CITATION = list(range(10))
OBJECT_MAP = {
    EVENT: "Event",
    FAMILY: "Family",
    MEDIA: "Media",
    NOTE: "Note",
    PERSON: "Person",
    PLACE: "Place",
    REPOSITORY: "Repository",
    SOURCE: "Source",
    CITATION: "Citation",
    }

#-------------------------------------------------------------------------
#
# EditLink class
#
#-------------------------------------------------------------------------
class EditLink(ManagedWindow):

    def __init__(self, dbstate, uistate, track, url, callback):
        self.url = url
        self.dbstate = dbstate
        self.simple_access = SimpleAccess(self.dbstate.db)
        self.callback = callback

        ManagedWindow.__init__(self, uistate, track, url, modal=True)

        self._local_init()
        self._connect_signals()
        self.show()

    def _local_init(self):
        self.top = Glade()
        self.set_window(self.top.toplevel,
                        self.top.get_object("title"),
                        _('Link Editor'))
        self.setup_configs('interface.editlink', 600, 160)

        self.uri_list = self.top.get_object('link_type')
        for text in [_("Internet Address"),       # 0 this order range above
                     _("Event"),      # 1
                     _("Family"),     # 2
                     _("Media"),      # 3
                     _("Note"),       # 4
                     _("Person"),     # 5
                     _("Place"),      # 6
                     _("Repository"), # 7
                     _("Source"),     # 8
                     _("Citation"),   # 9
                     ]:
            self.uri_list.append_text(text)
        self.pick_item = self.top.get_object('button1')
        self.new_button = self.top.get_object('new')
        self.edit_button = self.top.get_object('edit')
        self.selected = self.top.get_object('label1')
        self.url_link = self.top.get_object('entry1')
        self.uri_list.connect("changed", self._on_type_changed)
        self.pick_item.connect("clicked", self._on_pick_one)
        self.new_button.connect("clicked", self._on_new)
        self.edit_button.connect("clicked", self._on_edit_one)
        if self.url.startswith("gramps://"):
            object_class, prop, value = self.url[9:].split("/", 2)
            if object_class == "Event":
                self.uri_list.set_active(EVENT)
            elif object_class == "Family":
                self.uri_list.set_active(FAMILY)
            elif object_class == "Media":
                self.uri_list.set_active(MEDIA)
            elif object_class == "Note":
                self.uri_list.set_active(NOTE)
            elif object_class == "Person":
                self.uri_list.set_active(PERSON)
            elif object_class == "Place":
                self.uri_list.set_active(PLACE)
            elif object_class == "Repository":
                self.uri_list.set_active(REPOSITORY)
            elif object_class == "Source":
                self.uri_list.set_active(SOURCE)
            elif object_class == "Citation":
                self.uri_list.set_active(CITATION)
            # set texts:
            self.selected.set_text(self.display_link(
                    object_class, prop, value))
            self.url_link.set_text("gramps://%s/%s/%s" %
                                   (object_class, prop, value))
        else:
            self.uri_list.set_active(WEB)
            self.url_link.set_text(self.url)
        self.url_link.connect("changed", self.update_ui)

    def update_ui(self, widget):
        url = self.url_link.get_text()
        # text needs to have 3 or more chars://and at least one char
        # valid internet address are: http://, https://, ftp:// and mailto:
        match = re.match(r"(\w{3,}://\w+|mailto:\w+)", url)
        if match:
            self.ok_button.set_sensitive(True)
        else:
            self.ok_button.set_sensitive(False)

    def display_link(self, obj_class, prop, value):
        return self.simple_access.display(obj_class, prop, value)

    def _on_new_callback(self, obj):
        object_class = obj.__class__.__name__
        self.selected.set_text(self.display_link(
                object_class, "handle", obj.handle))
        self.url_link.set_text("gramps://%s/%s/%s" %
                               (object_class, "handle", obj.handle))

    def _on_new(self, widget):
        from ..editors import EditObject
        object_class = OBJECT_MAP[self.uri_list.get_active()]
        EditObject(self.dbstate,
                   self.uistate,
                   self.track,
                   object_class,
                   callback=self._on_new_callback)

    def _on_edit_one(self, widget):
        from ..editors import EditObject
        uri = self.url_link.get_text()
        if uri.startswith("gramps://"):
            obj_class, prop, value = uri[9:].split("/", 2)
            EditObject(self.dbstate,
                       self.uistate,
                       self.track,
                       obj_class, prop, value)

    def _on_pick_one(self, widget):
        from ..selectors import SelectorFactory
        object_class = OBJECT_MAP[self.uri_list.get_active()]
        Select = SelectorFactory(object_class)
        uri = self.url_link.get_text()
        default = None
        if uri.startswith("gramps://"):
            obj_class, prop, value = uri[9:].split("/", 2)
            if object_class == obj_class:
                if prop == "handle":
                    default = value
                elif (prop == "gramps_id" and
                      object_class in OBJECT_MAP.values()):
                    person = self.dbstate.db.method('get_%s_from_gramps_id',
                                                    object_class)(value)
                    if person:
                        default = person.handle
        d = Select(self.dbstate, self.uistate, self.track,
                   default=default)

        result = d.run()
        if result:
            prop = "handle"
            value = result.handle
            self.selected.set_text(self.display_link(
                    object_class, prop, value))
            self.url_link.set_text("gramps://%s/%s/%s" %
                                   (object_class, prop, value))

    def _on_type_changed(self, widget):
        self.selected.set_text("")
        if self.uri_list.get_active() == WEB:
            self.url_link.set_sensitive(True)
            self.pick_item.set_sensitive(False)
            self.new_button.set_sensitive(False)
            self.edit_button.set_sensitive(False)
        else:
            self.url_link.set_sensitive(False)
            self.pick_item.set_sensitive(True)
            self.new_button.set_sensitive(True)
            self.edit_button.set_sensitive(True)

    def get_uri(self):
        if self.uri_list.get_active() == WEB:
            return self.url_link.get_text()
        else:
            return self.url_link.get_text()

    def _connect_signals(self):
        self.define_cancel_button(self.top.get_object('button125'))
        self.ok_button = self.top.get_object('button124')
        self.define_ok_button(self.ok_button, self.save)
        # TODO help button (rename glade button name)
        self.define_help_button(self.top.get_object('button130'),
                WIKI_HELP_PAGE, WIKI_HELP_SEC)
        self.update_ui(self.url_link)

    def build_menu_names(self, obj):
        etitle =_('Link Editor')
        return (etitle, etitle)

    def define_ok_button(self,button,function):
        button.connect('clicked',function)

    def save(self, widget):
        self.callback(self.get_uri())
        self.close()

    def define_cancel_button(self,button):
        button.connect('clicked',self.close)

    def define_help_button(self, button, webpage='', section=''):
        button.connect('clicked', lambda x: display_help(webpage,
                                                               section))
