"""AttributetypeAdmin for Gstudio"""
from datetime import datetime

from django.forms import Media
from django.contrib import admin
from django.contrib.auth.models import User
from django.utils.html import strip_tags
from django.utils.text import truncate_words
from django.conf.urls.defaults import url
from django.conf.urls.defaults import patterns
from django.conf import settings as project_settings
from django.utils.translation import ugettext_lazy as _
from django.core.urlresolvers import reverse, NoReverseMatch
from markitup.widgets import AdminMarkItUpWidget
from tagging.models import Tag

import reversion
from gstudio import settings
from gstudio.managers import HIDDEN
from gstudio.managers import PUBLISHED
from gstudio.ping import DirectoryPinger
from gstudio.admin.forms import SystemtypeAdminForm
from gstudio.settings import GSTUDIO_VERSIONING


if GSTUDIO_VERSIONING == True:
    parent_class = reversion.VersionAdmin
else:
    parent_class = admin.ModelAdmin 

class SystemtypeAdmin(parent_class):
    """Admin for Systemtype model"""
    form = SystemtypeAdminForm
    date_hierarchy = 'creation_date'

    fieldsets = ((_('Neighbourhood'), {'fields': ('title', 'altnames','content', 'parent','image', 'slug','status')}),
                 (_('Systemtype definiton'), {'fields': (
                                                         'nodetype_set', 
                                                         'relationtype_set', 
                                                         'attributetype_set',
                                                         'metatype_set', 
                                                         'processtype_set')}),
                 (_('Dependency'), {'fields': ('prior_nodes', 'posterior_nodes',), 
                                 'classes': ('collapse', 'collapse-closed')}),
                 (_('Options'), {'fields': ('featured', 'excerpt', 'template',
                                            'authors',
                                            'creation_date',
                                            'start_publication',
                                            'end_publication'),
                                 'classes': ('collapse', 'collapse-closed')}),
                 (_('Privacy'), {'fields': ('password', 'login_required',),
                                 'classes': ('collapse', 'collapse-closed')}),
                 (_('Publication'), {'fields': ('tags', 
                                                'sites')}))


    list_filter = ('parent','metatypes', 'authors', 'status', 'featured',
                   'login_required', 'comment_enabled', 'pingback_enabled',
                   'creation_date', 'start_publication',
                   'end_publication', 'sites')
    list_display = ('get_title', 'get_authors', 'get_metatypes',
                    'get_tags', 'get_sites',
                    'get_comments_are_open', 'pingback_enabled',
                    'get_is_actual', 'get_is_visible', 'get_link',
                    'get_short_url', 'creation_date')
    radio_fields = {'template': admin.VERTICAL}
    filter_horizontal = ('metatypes', 'authors')
    prepopulated_fields = {'slug': ('title', )}
    search_fields = ('title', 'excerpt', 'content', 'tags')
    actions = ['make_mine', 'make_published', 'make_hidden',
               'close_comments', 'close_pingbacks',
               'ping_directories', 'make_tweet', 'put_on_top']
    actions_on_top = True
    actions_on_bottom = True

    def __init__(self, model, admin_site):
        self.form.admin_site = admin_site
        super(SystemtypeAdmin, self).__init__(model, admin_site)

    def formfield_for_dbfield(self, db_field, **kwargs):
        if db_field.name == 'content':
            kwargs['widget'] = AdminMarkItUpWidget()
        return super(SystemtypeAdmin, self).formfield_for_dbfield(db_field, **kwargs)

    # Custom Display
    def get_title(self, systemtype):
        """Return the title with word count and number of comments"""
        title = _('%(title)s (%(word_count)i words)') % \
                {'title': systemtype.title, 'word_count': systemtype.word_count}
        comments = systemtype.comments.count()
        if comments:
            return _('%(title)s (%(comments)i comments)') % \
                   {'title': title, 'comments': comments}
        return title
    get_title.short_description = _('title')

    def get_authors(self, systemtype):
        """Return the authors in HTML"""
        try:
            authors = ['<a href="%s" target="blank">%s</a>' %
                       (reverse('gstudio_author_detail',
                                args=[author.username]),
                        author.username) for author in systemtype.authors.all()]
        except NoReverseMatch:
            authors = [author.username for author in systemtype.authors.all()]
        return ', '.join(authors)
    get_authors.allow_tags = True
    get_authors.short_description = _('author(s)')

    def get_metatypes(self, systemtype):
        """Return the metatypes linked in HTML"""
        try:
            metatypes = ['<a href="%s" target="blank">%s</a>' %
                          (metatype.get_absolute_url(), metatype.title)
                          for metatype in systemtype.metatypes.all()]
        except NoReverseMatch:
            metatypes = [metatype.title for metatype in
                          systemtype.metatypes.all()]
        return ', '.join(metatypes)
    get_metatypes.allow_tags = True
    get_metatypes.short_description = _('metatype(s)')

    def get_tags(self, systemtype):
        """Return the tags linked in HTML"""
        try:
            return ', '.join(['<a href="%s" target="blank">%s</a>' %
                              (reverse('gstudio_tag_detail',
                                       args=[tag.name]), tag.name)
                              for tag in Tag.systems.get_for_system(systemtype)])
        except NoReverseMatch:
            return systemtype.tags
    get_tags.allow_tags = True
    get_tags.short_description = _('tag(s)')

    def get_sites(self, systemtype):
        """Return the sites linked in HTML"""
        return ', '.join(
            ['<a href="http://%(domain)s" target="blank">%(name)s</a>' %
             site.__dict__ for site in systemtype.sites.all()])
    get_sites.allow_tags = True
    get_sites.short_description = _('site(s)')

    def get_comments_are_open(self, systemtype):
        """Admin wrapper for systemtype.comments_are_open"""
        return systemtype.comments_are_open
    get_comments_are_open.boolean = True
    get_comments_are_open.short_description = _('comment enabled')

    def get_is_actual(self, systemtype):
        """Admin wrapper for systemtype.is_actual"""
        return systemtype.is_actual
    get_is_actual.boolean = True
    get_is_actual.short_description = _('is actual')

    def get_is_visible(self, systemtype):
        """Admin wrapper for systemtype.is_visible"""
        return systemtype.is_visible
    get_is_visible.boolean = True
    get_is_visible.short_description = _('is visible')

    def get_link(self, systemtype):
        """Return a formated link to the systemtype"""
        return u'<a href="%s" target="blank">%s</a>' % (
            systemtype.get_absolute_url(), _('View'))
    get_link.allow_tags = True
    get_link.short_description = _('View on site')

    def get_short_url(self, systemtype):
        """Return the short url in HTML"""
        short_url = systemtype.short_url
        if not short_url:
            return _('Unavailable')
        return '<a href="%(url)s" target="blank">%(url)s</a>' % \
               {'url': short_url}
    get_short_url.allow_tags = True
    get_short_url.short_description = _('short url')

    # Custom Methods
    def save_model(self, request, systemtype, form, change):
        """Save the authors, update time, make an excerpt"""
        if not form.cleaned_data.get('excerpt') and systemtype.status == PUBLISHED:
            systemtype.excerpt = truncate_words(strip_tags(systemtype.content), 50)

        if systemtype.pk and not request.user.has_perm('gstudio.can_change_author'):
            form.cleaned_data['authors'] = systemtype.authors.all()

        if not form.cleaned_data.get('authors'):
            form.cleaned_data['authors'].append(request.user)

        systemtype.last_update = datetime.now()
        systemtype.save()

    def queryset(self, request):
        """Make special filtering by user permissions"""
        queryset = super(SystemtypeAdmin, self).queryset(request)
        if request.user.has_perm('gstudio.can_view_all'):
            return queryset
        return request.user.systemtypes.all()

    def formfield_for_manytomany(self, db_field, request, **kwargs):
        """Filters the disposable authors"""
        if db_field.name == 'authors':
            if request.user.has_perm('gstudio.can_change_author'):
                kwargs['queryset'] = User.objects.filter(is_staff=True)
            else:
                kwargs['queryset'] = User.objects.filter(pk=request.user.pk)

        return super(SystemtypeAdmin, self).formfield_for_manytomany(
            db_field, request, **kwargs)

    def get_actions(self, request):
        """Define user actions by permissions"""
        actions = super(SystemtypeAdmin, self).get_actions(request)
        if not request.user.has_perm('gstudio.can_change_author') \
           or not request.user.has_perm('gstudio.can_view_all'):
            del actions['make_mine']
        if not settings.PING_DIRECTORIES:
            del actions['ping_directories']
        if not settings.USE_TWITTER:
            del actions['make_tweet']

        return actions

    # Custom Actions
    def make_mine(self, request, queryset):
        """Set the systemtypes to the user"""
        for systemtype in queryset:
            if request.user not in systemtype.authors.all():
                systemtype.authors.add(request.user)
        self.message_user(
            request, _('The selected systemtypes now belong to you.'))
    make_mine.short_description = _('Set the systemtypes to the user')

    def make_published(self, request, queryset):
        """Set systemtypes selected as published"""
        queryset.update(status=PUBLISHED)
        self.ping_directories(request, queryset, messages=False)
        self.message_user(
            request, _('The selected systemtypes are now marked as published.'))
    make_published.short_description = _('Set systemtypes selected as published')

    def make_hidden(self, request, queryset):
        """Set systemtypes selected as hidden"""
        queryset.update(status=HIDDEN)
        self.message_user(
            request, _('The selected systemtypes are now marked as hidden.'))
    make_hidden.short_description = _('Set systemtypes selected as hidden')

    def make_tweet(self, request, queryset):
        """Post an update on Twitter"""
        import tweepy
        auth = tweepy.OAuthHandler(settings.TWITTER_CONSUMER_KEY,
                                   settings.TWITTER_CONSUMER_SECRET)
        auth.set_access_token(settings.TWITTER_ACCESS_KEY,
                              settings.TWITTER_ACCESS_SECRET)
        api = tweepy.API(auth)
        for systemtype in queryset:
            short_url = systemtype.short_url
            message = '%s %s' % (systemtype.title[:139 - len(short_url)], short_url)
            api.update_status(message)
        self.message_user(
            request, _('The selected systemtypes have been tweeted.'))
    make_tweet.short_description = _('Tweet systemtypes selected')

    def close_comments(self, request, queryset):
        """Close the comments for selected systemtypes"""
        queryset.update(comment_enabled=False)
        self.message_user(
            request, _('Comments are now closed for selected systemtypes.'))
    close_comments.short_description = _('Close the comments for '\
                                         'selected systemtypes')

    def close_pingbacks(self, request, queryset):
        """Close the pingbacks for selected systemtypes"""
        queryset.update(pingback_enabled=False)
        self.message_user(
            request, _('Linkbacks are now closed for selected systemtypes.'))
    close_pingbacks.short_description = _(
        'Close the linkbacks for selected systemtypes')

    def put_on_top(self, request, queryset):
        """Put the selected systemtypes on top at the current date"""
        queryset.update(creation_date=datetime.now())
        self.ping_directories(request, queryset, messages=False)
        self.message_user(request, _(
            'The selected systemtypes are now set at the current date.'))
    put_on_top.short_description = _(
        'Put the selected systemtypes on top at the current date')

    def ping_directories(self, request, queryset, messages=True):
        """Ping Directories for selected systemtypes"""
        for directory in settings.PING_DIRECTORIES:
            pinger = DirectoryPinger(directory, queryset)
            pinger.join()
            if messages:
                success = 0
                for result in pinger.results:
                    if not result.get('flerror', True):
                        success += 1
                    else:
                        self.message_user(request,
                                          '%s : %s' % (directory,
                                                       result['message']))
                if success:
                    self.message_user(
                        request,
                        _('%(directory)s directory succesfully ' \
                          'pinged %(success)d systemtypes.') %
                        {'directory': directory, 'success': success})
    ping_directories.short_description = _(
        'Ping Directories for selected systemtypes')

    def get_urls(self):
        systemtype_admin_urls = super(SystemtypeAdmin, self).get_urls()
        urls = patterns(
            'django.views.generic.simple',
            url(r'^autocomplete_tags/$', 'direct_to_template',
                {'template': 'admin/gstudio/systemtype/autocomplete_tags.js',
                 'mimetype': 'application/javascript'},
                name='gstudio_systemtype_autocomplete_tags'),
            url(r'^wymeditor/$', 'direct_to_template',
                {'template': 'admin/gstudio/systemtype/wymeditor.js',
                 'mimetype': 'application/javascript'},
                name='gstudio_systemtype_wymeditor'),
            url(r'^markitup/$', 'direct_to_template',
                {'template': 'admin/gstudio/systemtype/markitup.js',
                 'mimetype': 'application/javascript'},
                name='gstudio_systemtype_markitup'),)
        return urls + systemtype_admin_urls

    def _media(self):
        STATIC_URL = '%sgstudio/' % project_settings.STATIC_URL
        media = super(SystemtypeAdmin, self).media + Media(
            css={'all': ('%scss/jquery.autocomplete.css' % STATIC_URL,)},
            js=('%sjs/jquery.js' % STATIC_URL,
                '%sjs/jquery.bgiframe.js' % STATIC_URL,
                '%sjs/jquery.autocomplete.js' % STATIC_URL,
                reverse('admin:gstudio_systemtype_autocomplete_tags'),))

        if settings.WYSIWYG == 'wymeditor':
            media += Media(
                js=('%sjs/wymeditor/jquery.wymeditor.pack.js' % STATIC_URL,
                    '%sjs/wymeditor/plugins/hovertools/'
                    'jquery.wymeditor.hovertools.js' % STATIC_URL,
                    reverse('admin:gstudio_systemtype_wymeditor')))
        elif settings.WYSIWYG == 'tinymce':
            from tinymce.widgets import TinyMCE
            media += TinyMCE().media + Media(
                js=(reverse('tinymce-js', args=('admin/gstudio/systemtype',)),))
        elif settings.WYSIWYG == 'markitup':
            media += Media(
                js=('%sjs/markitup/jquery.markitup.js' % STATIC_URL,
                    '%sjs/markitup/sets/%s/set.js' % (
                        STATIC_URL, settings.MARKUP_LANGUAGE),
                    reverse('admin:gstudio_systemtype_markitup')),
                css={'all': (
                    '%sjs/markitup/skins/django/style.css' % STATIC_URL,
                    '%sjs/markitup/sets/%s/style.css' % (
                        STATIC_URL, settings.MARKUP_LANGUAGE))})
        return media
    media = property(_media)