# -*- coding: utf-8 -*-

from django import forms
from django.contrib import admin
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import User, Group, Permission
from django.contrib.auth.admin import UserAdmin
from django.core.urlresolvers import reverse
from django.utils.safestring import mark_safe
from django.db.models import Q
import django.utils.six as six

import autocomplete_light

from .petits_cours_models import PetitCoursDemande, \
    PetitCoursSubject, PetitCoursAbility, PetitCoursAttribution, \
    PetitCoursAttributionCounter
from .models import (
    SurveyQuestionAnswer, SurveyQuestion, CofProfile, EventOption,
    EventOptionChoice, Event, Club, EventCommentField, EventRegistration,
    Survey
)

from gestion.models import Profile


def add_link_field(target_model='', field='', link_text=six.text_type,
                   desc_text=six.text_type):
    def add_link(cls):
        reverse_name = target_model or cls.model.__name__.lower()

        def link(self, instance):
            app_name = instance._meta.app_label
            reverse_path = "admin:%s_%s_change" % (app_name, reverse_name)
            link_obj = getattr(instance, field, None) or instance
            if not link_obj.id:
                return ""
            url = reverse(reverse_path, args=(link_obj.id,))
            return mark_safe("<a href='%s'>%s</a>"
                             % (url, link_text(link_obj)))
        link.allow_tags = True
        link.short_description = desc_text(reverse_name + ' link')
        cls.link = link
        cls.readonly_fields =\
            list(getattr(cls, 'readonly_fields', [])) + ['link']
        return cls
    return add_link


class SurveyQuestionAnswerInline(admin.TabularInline):
    model = SurveyQuestionAnswer


@add_link_field(desc_text=lambda x: "Réponses",
                link_text=lambda x: "Éditer les réponses")
class SurveyQuestionInline(admin.TabularInline):
    model = SurveyQuestion


class SurveyQuestionAdmin(admin.ModelAdmin):
    search_fields = ('survey__title', 'answer')
    inlines = [
        SurveyQuestionAnswerInline,
    ]


class SurveyAdmin(admin.ModelAdmin):
    search_fields = ('title', 'details')
    inlines = [
        SurveyQuestionInline,
    ]


class EventOptionChoiceInline(admin.TabularInline):
    model = EventOptionChoice


@add_link_field(desc_text=lambda x: "Choix",
                link_text=lambda x: "Éditer les choix")
class EventOptionInline(admin.TabularInline):
    model = EventOption


class EventCommentFieldInline(admin.TabularInline):
    model = EventCommentField


class EventOptionAdmin(admin.ModelAdmin):
    search_fields = ('event__title', 'name')
    inlines = [
        EventOptionChoiceInline,
    ]


class EventAdmin(admin.ModelAdmin):
    search_fields = ('title', 'location', 'description')
    inlines = [
        EventOptionInline,
        EventCommentFieldInline,
    ]


class ProfileInline(admin.StackedInline):
    model = Profile
    inline_classes = ("collapse open",)


class UserProfileAdmin(UserAdmin):
    def login_clipper(self, obj):
        return obj.profile.login_clipper

    def phone(self, obj):
        return obj.profile.phone

    def occupation(self, obj):
        return obj.profile.occupation

    list_display = (
        UserAdmin.list_display + ('login_clipper', 'phone', 'occupation')
    )
    list_display_links = ('username', 'email', 'first_name', 'last_name')
    search_fields = UserAdmin.search_fields + ('profile__phone', )
    inlines = [
        ProfileInline,
    ]

    staff_fieldsets = [
        (None, {'fields': ['username', 'password']}),
        (_('Personal info'), {'fields': ['first_name', 'last_name', 'email']}),
    ]

    def get_fieldsets(self, request, user=None):
        if not request.user.is_superuser:
            return self.staff_fieldsets
        return super(UserProfileAdmin, self).get_fieldsets(request, user)

    def save_model(self, request, user, form, change):
        cof_group, created = Group.objects.get_or_create(name='COF')
        if created:
            # Si le groupe COF n'était pas déjà dans la bdd
            # On lui assigne les bonnes permissions
            perms = Permission.objects.filter(
                Q(content_type__app_label='cof')
                | Q(content_type__app_label='bda')
                | (Q(content_type__app_label='auth')
                   & Q(content_type__model='user')))
            cof_group.permissions = perms
            # On y associe les membres du Burô
            cof_group.user_set = User.objects.filter(profile__is_buro=True)
            # Sauvegarde
            cof_group.save()
        # le Burô est staff et appartient au groupe COF
        if user.profile.is_buro:
            user.is_staff = True
            user.groups.add(cof_group)
        else:
            user.is_staff = False
            user.groups.remove(cof_group)
        user.save()


# FIXME: This is absolutely horrible.
def user_unicode(self):
    if self.first_name and self.last_name:
        return "%s %s (%s)" % (self.first_name, self.last_name, self.username)
    else:
        return self.username
if six.PY2:
    User.__unicode__ = user_unicode
else:
    User.__str__ = user_unicode


class EventRegistrationAdmin(admin.ModelAdmin):
    form = autocomplete_light.modelform_factory(EventRegistration, exclude=[])
    list_display = ('__unicode__' if six.PY2 else '__str__', 'event', 'user',
                    'paid')
    list_filter = ('paid',)
    search_fields = ('user__username', 'user__first_name', 'user__last_name',
                     'user__email', 'event__title')


class PetitCoursAbilityAdmin(admin.ModelAdmin):
    list_display = ('user', 'matiere', 'niveau', 'agrege')
    search_fields = ('user__username', 'user__first_name', 'user__last_name',
                     'user__email', 'matiere__name', 'niveau')
    list_filter = ('matiere', 'niveau', 'agrege')


class PetitCoursAttributionAdmin(admin.ModelAdmin):
    list_display = ('user', 'demande', 'matiere', 'rank', )
    search_fields = ('user__username', 'matiere__name')


class PetitCoursAttributionCounterAdmin(admin.ModelAdmin):
    list_display = ('user', 'matiere', 'count', )
    list_filter = ('matiere',)
    search_fields = ('user__username', 'user__first_name', 'user__last_name',
                     'user__email', 'matiere__name')
    actions = ['reset', ]
    actions_on_bottom = True

    def reset(self, request, queryset):
        queryset.update(count=0)
    reset.short_description = "Remise à zéro du compteur"


class PetitCoursDemandeAdmin(admin.ModelAdmin):
    list_display = ('name', 'email', 'agrege_requis', 'niveau', 'created',
                    'traitee', 'processed')
    list_filter = ('traitee', 'niveau')
    search_fields = ('name', 'email', 'phone', 'lieu', 'remarques')


class ClubAdminForm(forms.ModelForm):
    def clean(self):
        cleaned_data = super(ClubAdminForm, self).clean()
        respos = cleaned_data.get('respos')
        members = cleaned_data.get('membres')
        for respo in respos.all():
            if respo not in members:
                raise forms.ValidationError(
                    "Erreur : le respo %s n'est pas membre du club."
                    % respo.get_full_name())
        return cleaned_data


class ClubAdmin(admin.ModelAdmin):
    list_display = ['name']
    form = ClubAdminForm


admin.site.register(Survey, SurveyAdmin)
admin.site.register(SurveyQuestion, SurveyQuestionAdmin)
admin.site.register(Event, EventAdmin)
admin.site.register(EventOption, EventOptionAdmin)
admin.site.unregister(User)
admin.site.register(User, UserProfileAdmin)
admin.site.register(CofProfile)
admin.site.register(Club, ClubAdmin)
admin.site.register(PetitCoursSubject)
admin.site.register(PetitCoursAbility, PetitCoursAbilityAdmin)
admin.site.register(PetitCoursAttribution, PetitCoursAttributionAdmin)
admin.site.register(PetitCoursAttributionCounter,
                    PetitCoursAttributionCounterAdmin)
admin.site.register(PetitCoursDemande, PetitCoursDemandeAdmin)
admin.site.register(EventRegistration, EventRegistrationAdmin)