# -*- coding: utf-8 -*-
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000-2007  Donald N. Allingham
# Copyright (C) 2007       Johan Gonqvist <johan.gronqvist@gmail.com>
# Copyright (C) 2007-2009  Gary Burton <gary.burton@zen.co.uk>
# Copyright (C) 2007-2009  Stephane Charette <stephanecharette@gmail.com>
# Copyright (C) 2008-2009  Brian G. Matherly
# Copyright (C) 2008       Jason M. Simanek <jason@bohemianalps.com>
# Copyright (C) 2008-2011  Rob G. Healey <robhealey1@gmail.com>
# Copyright (C) 2010       Doug Blank <doug.blank@gmail.com>
# Copyright (C) 2010       Jakim Friant
# Copyright (C) 2010-      Serge Noiraud
# Copyright (C) 2011       Tim G L Lyons
# Copyright (C) 2013       Benny Malengier
# Copyright (C) 2016       Allen Crider
#
# 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/>.
#

"""
Narrative Web Page generator.

Classe:
    EventPage - Event index page and individual Event pages
"""

# ------------------------------------------------
# python modules
# ------------------------------------------------
from collections import defaultdict
from operator import itemgetter
from decimal import getcontext
import unicodedata
import logging

# ------------------------------------------------
# Gramps module
# ------------------------------------------------
from gramps.gen.const import GRAMPS_LOCALE as glocale
from gramps.gen.lib import Date, Event
from gramps.gen.plug.report import Bibliography
from gramps.plugins.lib.libhtml import Html

# ------------------------------------------------
# specific narrative web import
# ------------------------------------------------
from gramps.plugins.webreport.basepage import BasePage
from gramps.plugins.webreport.common import (
    _EVENTMAP,
    alphabet_navigation,
    partial_navigation,
    create_indexes_pages,
    FULLCLEAR,
    sort_event_types,
    AlphabeticIndex,
)

_ = glocale.translation.sgettext
LOG = logging.getLogger(".NarrativeWeb")
getcontext().prec = 8


#################################################
#
#    creates the Event List Page and EventPages
#
#################################################
class EventPages(BasePage):
    """
    This class is responsible for displaying information about the 'Person'
    database objects. It displays this information under the 'Events'
    tab. It is told by the 'add_instances' call which 'Person's to display,
    and remembers the list of persons. A single call to 'display_pages'
    displays both the Event List (Index) page and all the Event
    pages.

    The base class 'BasePage' is initialised once for each page that is
    displayed.
    """

    def __init__(self, report, the_lang, the_title):
        """
        @param: report    -- The instance of the main report class
                             for this report
        @param: the_lang  -- The lang to process
        @param: the_title -- The title page related to the language
        """
        BasePage.__init__(self, report, the_lang, the_title)
        self.event_handle_list = []
        self.event_types = []
        self.event_dict = defaultdict(set)

    def display_pages(self, the_lang, the_title):
        """
        Generate and output the pages under the Event tab, namely the event
        index and the individual event pages.

        @param: the_lang  -- The lang to process
        @param: the_title -- The title page related to the language
        """
        BasePage.__init__(self, self.report, the_lang, the_title)
        LOG.debug("obj_dict[Event]")
        for item in self.report.obj_dict[Event].items():
            LOG.debug("    %s", str(item))
        event_handle_list = self.report.obj_dict[Event].keys()
        event_types = []
        for event_handle in event_handle_list:
            event = self.r_db.get_event_from_handle(event_handle)
            event_types.append(self._(event.get_type().xml_str()))
        message = _("Creating event pages")
        progress_title = self.report.pgrs_title(the_lang)
        with self.r_user.progress(
            progress_title, message, len(event_handle_list) + 1
        ) as step:
            index = 1
            for event_handle in event_handle_list:
                step()
                index += 1
                self.eventpage(self.report, the_lang, the_title, event_handle)
            step()
        self.eventlistpage(
            self.report, the_lang, the_title, event_types, event_handle_list
        )

    def __output_event(
        self,
        ldatec,
        event_type,
        tbody,
        bucket_letter,
        first_letter,
        _event_displayed,
        first_type,
        event_handle,
    ):
        """
        Generate and output the data for a single event

        @param: ldatec          -- Last change date and time (updated)
        @param: event_type      -- The event type name processed for XML etc
        @param: tbody           -- The current HTML body into which the data is
                                   assembled
        @param: bucket_letter   -- The AlphabeticIndex bucket for this event
        @param: first_letter    -- Whether this is the first event for this
                                   letter
        @param: event_displayed -- List of events already displayed
        @param: first_type      -- Whether this is the first event of this type
        @param: event_handle    -- Handle of the event to be output

        :returns: Returns a tuple of updated ldatec, first_letter, first_type,
                    _event_displayed
        :rtype: tuple

        """
        event = self.r_db.get_event_from_handle(event_handle)
        _type = event.get_type()
        gid = event.get_gramps_id()
        if event.get_change_time() > ldatec:
            ldatec = event.get_change_time()
        # check to see if we have listed this gramps_id yet?
        if gid not in _event_displayed:
            if int(_type) in _EVENTMAP:
                handle_list = set(
                    self.r_db.find_backlink_handles(
                        event_handle, include_classes=["Family", "Person"]
                    )
                )
            else:
                handle_list = set(
                    self.r_db.find_backlink_handles(
                        event_handle, include_classes=["Person"]
                    )
                )
            if handle_list:
                trow = Html("tr")
                tbody += trow
                # set up hyperlinked letter for alphabet_navigation
                tcell = Html("td", class_="ColumnLetter", inline=True)
                trow += tcell
                if first_letter:
                    first_letter = False
                    first_type = False
                    # Update the ColumnLetter cell and
                    # create a populated ColumnType
                    t_a = 'class = "BeginLetter BeginType"'
                    trow.attr = t_a
                    letter = bucket_letter
                    ttle = self._("Event types beginning " "with letter %s") % letter
                    tcell += Html("a", letter, name=letter, title=ttle)
                    tcell = Html(
                        "td", class_="ColumnType", title=self._(event_type), inline=True
                    )
                    tcell += self._(event_type)
                elif first_type:
                    first_type = False
                    # Update the ColumnLetter cell and
                    # create a populated ColumnType cell
                    trow.attr = 'class = "BeginType"'
                    tcell = Html(
                        "td", class_="ColumnType", title=self._(event_type), inline=True
                    )
                    tcell += self._(event_type)
                else:
                    tcell = Html("td", class_="ColumnType", title="&nbsp;", inline=True)
                    tcell += "&nbsp;"  # create a non-populated ColumnType
                # Add the ColumnType cell
                trow += tcell
                # event date
                tcell = Html("td", class_="ColumnDate", inline=True)
                trow += tcell
                date = Date.EMPTY
                if event:
                    date = event.get_date_object()
                    if date and date is not Date.EMPTY:
                        tcell += self.rlocale.get_date(date)
                else:
                    tcell += "&nbsp;"
                # Gramps ID
                trow += Html("td", class_="ColumnGRAMPSID") + (
                    self.event_grampsid_link(event_handle, gid, None)
                )
                # Person(s) column
                tcell = Html("td", class_="ColumnPerson")
                trow += tcell
                # classname can either be a person or a family
                first_person = True
                # get person(s) for ColumnPerson
                sorted_list = sorted(handle_list)
                self.complete_people(tcell, first_person, sorted_list, uplink=False)
        _event_displayed.append(gid)
        return (ldatec, first_letter, first_type, _event_displayed)

    def part_eventlistpage(
        self,
        report,
        index_list,
        name,
        letter,
        index,
        part=None,
        subp=None,
        partial_list=None,
    ):
        """
        Will create the part of event list page
        """
        nav_name = part_name = name
        if part != 0 and subp != 0:
            part_name += str(part)
            nav_name = part_name
        if subp and subp != 0:
            part_name += subp
        output_file, sio = self.report.create_file(part_name)
        result = self.write_header(self._("Events"))
        eventslistpage, dummy_head, dummy_body, outerwrapper = result
        ldatec = 0

        # begin events list  division
        with Html("div", class_="content", id="EventList") as eventlist:
            outerwrapper += eventlist

            msg = self._(
                "This page contains an index of all the events in the "
                "database, sorted by their type and date (if one is "
                "present). Clicking on an event&#8217;s Gramps ID "
                "will open a page for that event."
            )
            eventlist += Html("p", msg, id="description")

            # Output the navigation
            alpha_nav = alphabet_navigation(
                index_list,
                self.rlocale,
                current=part_name,
                rtl=self.dir,
                new_page="events",
                ext=self.ext,
            )
            if alpha_nav:
                eventlist += alpha_nav

            if part is not None:
                # We need to create a new navigation tab for partial page index.
                partial_nav = partial_navigation(
                    partial_list,
                    self.rlocale,
                    current=part_name,
                    rtl=self.dir,
                    ext=self.ext,
                    new_page=nav_name,
                )
                if partial_nav is not None:
                    eventlist += Html(
                        "div", style="clear: both;"
                    )  # This to align the next div to the left.
                    eventlist += partial_nav

            # begin alphabet event table
            with Html(
                "table", class_="infolist primobjlist alphaevent " + self.dir
            ) as table:
                eventlist += table

                thead = Html("thead")
                table += thead

                trow = Html("tr")
                thead += trow

                trow.extend(
                    Html("th", label, class_=colclass, inline=True)
                    for (label, colclass) in [
                        (self._("Letter"), "ColumnRowLabel"),
                        (self._("Type"), "ColumnType"),
                        (self._("Date"), "ColumnDate"),
                        (self._("Gramps ID"), "ColumnGRAMPSID"),
                        (self._("Person"), "ColumnPerson"),
                    ]
                )

                tbody = Html("tbody")
                table += tbody

                first_letter = True
                first_type = True
                _event_displayed = []
                # for each bucket, output the events in that bucket
                # letter, handle_list = index
                evttype = ""
                for evt_hdle, event_type in index:
                    evt_type = event_type.split(" (")[0]
                    if evt_type != evttype:
                        evttype = evt_type
                        first_type = True
                    (
                        ldatec,
                        first_letter,
                        first_type,
                        _event_displayed,
                    ) = self.__output_event(
                        ldatec,
                        evt_type,
                        tbody,
                        letter,
                        first_letter,
                        _event_displayed,
                        first_type,
                        evt_hdle,
                    )

        # add clearline for proper styling
        # add footer section
        footer = self.write_footer(ldatec)
        outerwrapper += (FULLCLEAR, footer)

        # send page ut for processing
        # and close the file
        self.xhtml_writer(eventslistpage, output_file, sio, ldatec)

    def eventlistpage(
        self, report, the_lang, the_title, event_types, event_handle_list
    ):
        """
        Will create the event list page

        @param: report            -- The instance of the main report class for
                                     this report
        @param: the_lang          -- The lang to process
        @param: the_title         -- The title page related to the language
        @param: event_types       -- A list of the type in the events database
        @param: event_handle_list -- A list of event handles
        """
        BasePage.__init__(self, report, the_lang, the_title)
        # get alphabet navigation...
        # Assemble all the event types
        index = AlphabeticIndex(self.rlocale)
        for event_type, data_list in sort_event_types(
            self.r_db, event_types, event_handle_list, self.rlocale
        ):
            index.addRecord(event_type, data_list)

        # Extract the buckets from the index
        index_list = []
        index.resetBucketIterator()
        events_handle_dict = defaultdict(list)
        events_handle_list = []
        max_letter_rows = defaultdict(int)
        while index.nextBucket():
            if index.bucketRecordCount != 0:
                letter = index.bucketLabel
                if letter not in index_list:
                    index_list.append(letter)
                bletter = (
                    unicodedata.normalize("NFKD", letter)[0]
                    if len(letter) > 0
                    else letter
                )
                while index.nextRecord():
                    handle_list = index.recordData
                    if handle_list:
                        for handle in handle_list:
                            event = self.r_db.get_event_from_handle(handle[1])
                            if event:
                                date = event.get_date_object()
                                sdate = str(self._geteventdate(event))
                                evt_date = ""
                                if date and date is not Date.EMPTY:
                                    evt_date = self.rlocale.get_date(date)
                                if evt_date == "":
                                    evt_date = event.get_gramps_id()
                                goto = index.recordName + " (%s)" % evt_date
                            events_handle_dict[bletter].append((handle[1], sdate, goto))
                        if bletter in max_letter_rows:
                            max_letter_rows[bletter] += len(handle_list)
                        else:
                            max_letter_rows[bletter] = len(handle_list)
        events_handle_list = list(events_handle_dict.items())
        extended_handle_list = defaultdict(list)
        for bletter, hdlel in events_handle_list:
            bletter = (
                unicodedata.normalize("NFKD", bletter)[0]
                if len(bletter) > 0
                else bletter
            )
            bletter = bletter[0] if len(bletter) > 0 else bletter
            bletter = bletter.upper() if bletter.isalpha() else "…"

            def sort_on_event_and_date(evt):
                return evt[2].split(" (")[0], evt[1]

            hdlel = sorted(hdlel, key=sort_on_event_and_date)
            for hdle in hdlel:
                extended_handle_list[bletter].append((hdle[0], hdle[2]))
        extended_handle_list = list(extended_handle_list.items())
        create_indexes_pages(
            report,
            "events",
            index_list,
            self.part_eventlistpage,
            extended_handle_list,
            locale=self.rlocale,
        )

    def _geteventdate(self, event):
        """
        Get the event date

        @param: event_handle -- The handle for the event to use
        """
        event_date = Date.EMPTY
        if event:
            date = event.get_date_object()
            if date:
                # returns the date in YYYY-MM-DD format
                return Date(
                    date.get_year_calendar("Gregorian"),
                    date.get_month(),
                    date.get_day(),
                )

        # return empty date string
        return event_date

    def event_grampsid_link(self, handle, grampsid, uplink):
        """
        Create a hyperlink from event handle, but show grampsid

        @param: handle   -- The handle for the event
        @param: grampsid -- The gramps ID to display
        @param: uplink   -- If True, then "../../../" is inserted in front of
                            the result.
        """
        url = self.report.build_url_fname_html(handle, "evt", uplink)

        # return hyperlink to its caller
        return Html("a", grampsid, href=url, title=grampsid, inline=True)

    def eventpage(self, report, the_lang, the_title, event_handle):
        """
        Creates the individual event page

        @param: report       -- The instance of the main report class for
                                this report
        @param: the_lang     -- The lang to process
        @param: the_title    -- The title page related to the language
        @param: event_handle -- The event handle for the database
        """
        event = report.database.get_event_from_handle(event_handle)
        BasePage.__init__(self, report, the_lang, the_title, event.get_gramps_id())
        if not event:
            return

        ldatec = event.get_change_time()
        event_media_list = event.get_media_list()
        self.uplink = True
        subdirs = True
        evt_type = self._(event.get_type().xml_str())
        self.page_title = "%(eventtype)s" % {"eventtype": evt_type}
        self.bibli = Bibliography()

        output_file, sio = self.report.create_file(event_handle, "evt")
        result = self.write_header(self._("Events"))
        eventpage, head, dummy_body, outerwrapper = result
        if event_media_list and self.create_media:
            if self.the_lang and not self.usecms:
                fname = "/".join(["..", "css", "lightbox.css"])
                jsname = "/".join(["..", "css", "lightbox.js"])
            else:
                fname = "/".join(["css", "lightbox.css"])
                jsname = "/".join(["css", "lightbox.js"])
            url = self.report.build_url_fname(fname, None, self.uplink)
            head += Html(
                "link", href=url, type="text/css", media="screen", rel="stylesheet"
            )
            url = self.report.build_url_fname(jsname, None, self.uplink)
            head += Html("script", src=url, type="text/javascript", inline=True)

        # start event detail division
        with Html("div", class_="content", id="EventDetail") as eventdetail:
            outerwrapper += eventdetail

            thumbnail = self.disp_first_img_as_thumbnail(event_media_list, event)
            if thumbnail is not None:
                eventdetail += thumbnail

            # display page title
            eventdetail += Html("h3", self.page_title, inline=True)

            # begin eventdetail table
            with Html("table", class_="infolist eventlist") as table:
                eventdetail += table

                tbody = Html("tbody")
                table += tbody

                evt_gid = event.get_gramps_id()
                if not self.noid and evt_gid:
                    trow = Html("tr") + (
                        Html(
                            "td",
                            self._("Gramps ID"),
                            class_="ColumnAttribute",
                            inline=True,
                        ),
                        Html("td", evt_gid, class_="ColumnGRAMPSID", inline=True),
                    )
                    tbody += trow

                # get event data
                #
                # for more information: see get_event_data()
                #
                event_data = self.get_event_data(event, event_handle, subdirs, evt_gid)

                for label, colclass, data in event_data:
                    if data:
                        trow = Html("tr") + (
                            Html("td", label, class_="ColumnAttribute", inline=True),
                            Html("td", data, class_="Column" + colclass),
                        )
                        tbody += trow

                # Tags
                tags = self.show_tags(event)
                if tags and self.report.inc_tags:
                    trow = Html("tr") + (
                        Html(
                            "td", self._("Tags"), class_="ColumnAttribute", inline=True
                        ),
                        Html("td", tags, class_="ColumnValue", inline=True),
                    )
                    table += trow

            # Narrative subsection
            notelist = event.get_note_list()
            notelist = self.display_note_list(notelist, Event)
            if notelist is not None:
                eventdetail += notelist

            # get attribute list
            attrlist = event.get_attribute_list()
            if attrlist:
                attrsection, attrtable = self.display_attribute_header()
                self.display_attr_list(attrlist, attrtable)
                eventdetail += attrsection

            # event source references
            if report.options["inc_sources"]:
                srcrefs = self.display_ind_sources(event)
                if srcrefs is not None:
                    eventdetail += srcrefs

            # display additional images as gallery
            if self.create_media:
                addgallery = self.disp_add_img_as_gallery(event_media_list, event)
                if addgallery:
                    eventdetail += addgallery

            # References list
            ref_list = self.display_bkref_list(Event, event_handle)
            if ref_list is not None:
                eventdetail += ref_list

        # add clearline for proper styling
        # add footer section
        footer = self.write_footer(ldatec)
        outerwrapper += (FULLCLEAR, footer)

        # send page out for processing
        # and close the page
        self.xhtml_writer(eventpage, output_file, sio, ldatec)
