#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2002-2006  Donald N. Allingham
# Copyright (C) 2011       Tim G L Lyons
#
# 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, see <https://www.gnu.org/licenses/>.
#

# -------------------------------------------------------------------------
#
# Standard Python modules
#
# -------------------------------------------------------------------------
from ....const import GRAMPS_LOCALE as glocale

_ = glocale.translation.gettext
import logging

LOG = logging.getLogger(".citationfilter")

# -------------------------------------------------------------------------
#
# Gramps modules
#
# -------------------------------------------------------------------------
from ....utils.db import get_source_and_citation_referents
from .. import Rule


# -------------------------------------------------------------------------
#
# Typing modules
#
# -------------------------------------------------------------------------
from typing import Set
from ....lib import Person
from ....db import Database
from ....types import (
    PersonHandle,
    EventHandle,
    PlaceHandle,
    MediaHandle,
    FamilyHandle,
)


# -------------------------------------------------------------------------
# "HasTextMatchingSubstringOf"
# -------------------------------------------------------------------------
class HasTextMatchingSubstringOf(Rule):
    """Rule that checks for string matches in any textual information"""

    labels = [_("Substring:"), _("Case sensitive:")]
    name = _("People with records containing <substring>")
    description = _("Matches people whose records contain text " "matching a substring")
    category = _("General filters")
    allow_regex = True

    def prepare(self, db: Database, user):
        self.db = db
        self.person_map: Set[str] = set()
        self.event_map: Set[str] = set()
        self.source_map: Set[str] = set()
        self.repo_map: Set[str] = set()
        self.family_map: Set[str] = set()
        self.place_map: Set[str] = set()
        self.media_map: Set[str] = set()
        try:
            if int(self.list[1]):
                self.case_sensitive = True
            else:
                self.case_sensitive = False
        except IndexError:
            self.case_sensitive = False
        self.cache_repos()
        self.cache_sources()

    def reset(self):
        self.person_map.clear()
        self.event_map.clear()
        self.source_map.clear()
        self.repo_map.clear()
        self.family_map.clear()
        self.place_map.clear()
        self.media_map.clear()

    def apply_to_one(self, db: Database, person: Person) -> bool:
        if person.handle in self.person_map:  # Cached by matching Source?
            return True
        if self.match_object(person):  # first match the person itself
            return True

        # Look for matching events
        if any(self.search_event(event_ref.ref) for event_ref in person.event_ref_list):
            return True

        # Look for matching families
        if any(
            self.search_family(family_handle) for family_handle in person.family_list
        ):
            return True

        # Look for matching media objects
        if any(self.search_media(media_ref.ref) for media_ref in person.media_list):
            return True
        return False

    def search_family(self, family_handle: FamilyHandle):
        if not family_handle:
            return False
        # search inside the family and cache the result to not search a family twice
        if family_handle not in self.family_map:
            match = 0
            family = self.db.get_family_from_handle(family_handle)
            if self.match_object(family):
                match = 1
            else:
                if any(
                    self.search_event(event_ref.ref)
                    for event_ref in family.event_ref_list
                ):
                    match = 1
                if any(
                    self.search_media(media_ref.ref) for media_ref in family.media_list
                ):
                    return True
            if match:
                self.family_map.add(family_handle)
        return family_handle in self.family_map

    def search_event(self, event_handle: EventHandle):
        if not event_handle:
            return False
        # search inside the event and cache the result (event sharing)
        if not event_handle in self.event_map:
            match = 0
            event = self.db.get_event_from_handle(event_handle)
            if self.match_object(event):
                match = 1
            elif event:
                place_handle = event.place
                if place_handle and self.search_place(place_handle):
                    match = 1
                if any(
                    self.search_media(media_ref.ref) for media_ref in event.media_list
                ):
                    return True
            if match:
                self.event_map.add(event_handle)
        return event_handle in self.event_map

    def search_place(self, place_handle: PlaceHandle) -> bool:
        if not place_handle:
            return False
        # search inside the place and cache the result
        if place_handle not in self.place_map:
            place = self.db.get_place_from_handle(place_handle)
            if self.match_object(place):
                self.place_map.add(place_handle)
        return place_handle in self.place_map

    def search_media(self, media_handle: MediaHandle) -> bool:
        if not media_handle:
            return False
        # search inside the media object and cache the result
        if media_handle not in self.media_map:
            media = self.db.get_media_from_handle(media_handle)
            if self.match_object(media):
                self.media_map.add(media_handle)
        return media_handle in self.media_map

    def cache_repos(self):
        # search all matching repositories
        self.repo_map.update(
            repo.handle
            for repo in self.db.iter_repositories()
            if repo and self.match_object(repo)
        )

    def cache_sources(self):
        # search all sources and match all referents of a matching source
        for source in self.db.iter_sources():
            match = self.match_object(source)
            LOG.debug(
                "cache_sources match %s string %s source %s"
                % (match, self.list[0], source.gramps_id)
            )
            if not match:
                if any(reporef.ref in self.repo_map for reporef in source.reporef_list):
                    match = True
                    LOG.debug(
                        "cache_sources repomatch %s string %s source %s"
                        % (match, self.list[0], source.gramps_id)
                    )
            (
                citation_list,
                citation_referents_list,
            ) = get_source_and_citation_referents(source.handle, self.db)
            LOG.debug("the_lists %s %s" % (citation_list, citation_referents_list))
            for citation_handle, refs in citation_referents_list:
                citation = self.db.get_citation_from_handle(citation_handle)
                LOG.debug(
                    "cache_sources match %s matchcitation %s string %s"
                    " source %s citation %s"
                    % (
                        match,
                        self.match_object(citation),
                        self.list[0],
                        source.gramps_id,
                        citation.gramps_id,
                    )
                )
                if match or self.match_object(citation):
                    # Update the maps to reflect the reference
                    (
                        person_list,
                        family_list,
                        event_list,
                        place_list,
                        source_list,
                        media_list,
                        repo_list,
                    ) = refs
                    self.person_map.update(person_list)
                    self.family_map.update(family_list)
                    self.event_map.update(event_list)
                    self.place_map.update(place_list)
                    self.media_map.update(media_list)
                    self.repo_map.update(repo_list)

    def match_object(self, obj):
        if not obj:
            return False
        if self.use_regex:
            return obj.matches_regexp(self.list[0], self.case_sensitive)
        return obj.matches_string(self.list[0], self.case_sensitive)
