from django.utils.translation import ugettext_lazy as _

from django.contrib import messages
from django.contrib.auth import logout as logout_user
from django.contrib.auth.decorators import login_required
from django.contrib.sites.models import Site
from django.shortcuts import render, redirect, get_object_or_404
from django.http import HttpResponse, JsonResponse
from django.core.mail import send_mail
from django.template.loader import get_template, render_to_string
from django.conf import settings


from events.models.profiles import Organization, Team, UserProfile, Member
from events.models.events import Event, CommonEvent, Place, Attendee
from events.forms import TeamForm, NewTeamForm, DeleteTeamForm, TeamContactForm, TeamInviteForm
from events import location
from events.utils import verify_csrf
from events.utils import slugify

from accounts.models import EmailRecord

import datetime
import simplejson

# Create your views here.
def teams_list(request, *args, **kwargs):
    if not request.user.is_authenticated:
        return redirect('all-teams')

    teams = request.user.profile.memberships.all().distinct()
    geo_ip = location.get_geoip(request)
    context = {
        'active': 'my',
        'teams': sorted(teams, key=lambda team: location.team_distance_from(geo_ip.latlng, team)),
    }
    return render(request, 'get_together/teams/list_teams.html', context)

def teams_list_all(request, *args, **kwargs):
    teams = Team.public_objects.all()
    geo_ip = location.get_geoip(request)
    context = {
        'active': 'all',
        'teams': sorted(teams, key=lambda team: location.team_distance_from(geo_ip.latlng, team)),
    }
    return render(request, 'get_together/teams/list_teams.html', context)


def show_team_by_slug(request, team_slug):
    team = get_object_or_404(Team, slug=team_slug)
    if team.access == Team.PERSONAL:
        return redirect('show-profile', team.owner_profile.id)
    return show_team(request, team)

def show_team_by_id(request, team_id):
    team = get_object_or_404(Team, id=team_id)
    return redirect('show-team-by-slug', team_slug=team.slug)

def show_team(request, team):
    upcoming_events = Event.objects.filter(team=team, end_time__gt=datetime.datetime.now()).order_by('start_time')
    recent_events = Event.objects.filter(team=team, end_time__lte=datetime.datetime.now()).order_by('-start_time')[:3]
    context = {
        'team': team,
        'upcoming_events': upcoming_events,
        'recent_events': recent_events,
        'is_member': request.user.profile in team.members.all(),
        'member_list': Member.objects.filter(team=team).order_by('-role', 'joined_date'),
        'can_create_event': request.user.profile.can_create_event(team),
        'can_edit_team': request.user.profile.can_edit_team(team),
    }
    return render(request, 'get_together/teams/show_team.html', context)

def show_team_events_by_slug(request, team_slug):
    team = get_object_or_404(Team, slug=team_slug)
    upcoming_events = Event.objects.filter(team=team, end_time__gt=datetime.datetime.now()).order_by('start_time')
    recent_events = Event.objects.filter(team=team, end_time__lte=datetime.datetime.now()).order_by('-start_time')
    context = {
        'team': team,
        'upcoming_events': upcoming_events,
        'recent_events': recent_events,
        'is_member': request.user.profile in team.members.all(),
        'member_list': Member.objects.filter(team=team).order_by('-role', 'joined_date'),
        'can_create_event': request.user.profile.can_create_event(team),
        'can_edit_team': request.user.profile.can_edit_team(team),
    }
    return render(request, 'get_together/teams/team_events.html', context)


def show_team_about_by_slug(request, team_slug):
    team = get_object_or_404(Team, slug=team_slug)
    if team.about_page:
        return show_team_about(request, team)
    else:
        return redirect('show-team-by-slug', team_slug=team.slug)

def show_team_about(request, team):
    context = {
        'team': team,
        'is_member': request.user.profile in team.members.all(),
        'member_list': Member.objects.filter(team=team).order_by('-role', 'joined_date'),
        'can_create_event': request.user.profile.can_create_event(team),
        'can_edit_team': request.user.profile.can_edit_team(team),
    }
    return render(request, 'get_together/teams/about_team.html', context)

@login_required
def create_team(request, *args, **kwargs):
    if request.method == 'GET':
        form = NewTeamForm()

        context = {
            'team_form': form,
        }
        return render(request, 'get_together/teams/create_team.html', context)
    elif request.method == 'POST':
        form = NewTeamForm(request.POST, request.FILES)
        if form.is_valid():
            new_team = form.save()
            new_team.owner_profile = request.user.profile
            new_team.save()
            Member.objects.create(team=new_team, user=request.user.profile, role=Member.ADMIN)
            return redirect('show-team-by-slug', team_slug=new_team.slug)
        else:
            context = {
                'team_form': form,
            }
            return render(request, 'get_together/teams/create_team.html', context)
    else:
     return redirect('home')

@login_required
def edit_team(request, team_id):
    team = get_object_or_404(Team, id=team_id)
    if not request.user.profile.can_edit_team(team):
        messages.add_message(request, messages.WARNING, message=_('You can not make changes to this team.'))
        return redirect('show-team-by-slug', team_slug=team.slug)

    if request.method == 'GET':
        form = TeamForm(instance=team)

        context = {
            'team': team,
            'team_form': form,
        }
        return render(request, 'get_together/teams/edit_team.html', context)
    elif request.method == 'POST':
        form = TeamForm(request.POST, request.FILES, instance=team)
        if form.is_valid():
            new_team = form.save()
            new_team.owner_profile = request.user.profile
            new_team.save()
            return redirect('show-team-by-slug', team_slug=new_team.slug)
        else:
            context = {
                'team': team,
                'team_form': form,
            }
            return render(request, 'get_together/teams/edit_team.html', context)
    else:
     return redirect('home')

@login_required
def delete_team(request, team_id):
    team = get_object_or_404(Team, id=team_id)
    if not request.user.profile.can_edit_team(team):
        messages.add_message(request, messages.WARNING, message=_('You can not make changes to this team.'))
        return redirect('show-team-by-slug', team.slug)

    if request.method == 'GET':
        form = DeleteTeamForm()

        context = {
            'team': team,
            'delete_form': form,
        }
        return render(request, 'get_together/teams/delete_team.html', context)
    elif request.method == 'POST':
        form = DeleteTeamForm(request.POST)
        if form.is_valid() and form.cleaned_data['confirm']:
            team.delete()
            return redirect('teams')
        else:
            context = {
                'team': team,
                'delete_form': form,
            }
            return render(request, 'get_together/teams/delete_team.html', context)
    else:
     return redirect('home')


@login_required
def manage_members(request, team_id):
    team = get_object_or_404(Team, id=team_id)
    if not request.user.profile.can_edit_team(team):
        messages.add_message(request, messages.WARNING, message=_('You can not manage this team\'s members.'))
        return redirect('show-team-by-slug', team.slug)

    members = Member.objects.filter(team=team).order_by('-role', 'user__realname')
    member_choices = [(member.id, member.user) for member in members if member.user.user.account.is_email_confirmed]
    default_choices = [('all', 'All Members (%s)' % len(member_choices)), ('admins', 'Only Administrators')]
    if request.method == 'POST':
        contact_form = TeamContactForm(request.POST)
        contact_form.fields['to'].choices = default_choices + member_choices
        if contact_form.is_valid():
            to = contact_form.cleaned_data['to']
            body = contact_form.cleaned_data['body']
            if to is not 'admins' and not request.user.profile.can_edit_team(team):
                messages.add_message(request, messages.WARNING, message=_('You can not contact this team\'s members.'))
                return redirect('show-team-by-slug', team.slug)
            if to == 'all':
                count = 0
                for member in Member.objects.filter(team=team):
                    if member.user.user.account.is_email_confirmed:
                        contact_member(member, body, request.user.profile)
                        count += 1
                messages.add_message(request, messages.SUCCESS, message=_('Emailed %s users' % count))
            elif to == 'admins':
                count = 0
                for member in Member.objects.filter(team=team, role=Member.ADMIN):
                    if member.user.user.account.is_email_confirmed:
                        contact_member(member, body, request.user.profile)
                        count += 1
                messages.add_message(request, messages.SUCCESS, message=_('Emailed %s users' % count))
            else:
                try:
                    member = Member.objects.get(id=to)
                    contact_member(member, body, request.user.profile)
                    messages.add_message(request, messages.SUCCESS, message=_('Emailed %s' % member.user))
                except Member.DoesNotExist:
                    messages.add_message(request, messages.ERROR, message=_('Error sending message: Unknown user (%s)'%to))
                    pass
            return redirect('manage-members', team_id)
        else:
            messages.add_message(request, messages.ERROR, message=_('Error sending message: %s' % contact_form.errors))
    else:
        contact_form = TeamContactForm()
        contact_form.fields['to'].choices = default_choices + member_choices

    context = {
        'team': team,
        'members': members,
        'contact_form': contact_form,
        'can_edit_team': request.user.profile.can_edit_team(team),
    }
    return render(request, 'get_together/teams/manage_members.html', context)


@login_required
def invite_members(request, team_id):
    team = get_object_or_404(Team, id=team_id)
    if not request.user.profile.can_edit_team(team):
        messages.add_message(request, messages.WARNING, message=_('You can not manage this team\'s members.'))
        return redirect('manage-members', team_id)
    if not request.user.account.is_email_confirmed:
        messages.add_message(request, messages.WARNING, message=_('You must confirm your own email address before you can invite others.'))
        return redirect('edit-profile')

    if request.method == 'POST':
        invite_form = TeamInviteForm(request.POST)
        if invite_form.is_valid():
            to = invite_form.cleaned_data['to']
            for email in to:
                invite_member(email, team, request.user.profile)

            messages.add_message(request, messages.SUCCESS, message=_('Sent %s invites' % len(to)))
            return redirect('manage-members', team_id)

    else:
        invite_form = TeamInviteForm()

    context = {
        'team': team,
        'invite_form': invite_form,
        'can_edit_team': request.user.profile.can_edit_team(team),
    }
    return render(request, 'get_together/teams/invite_members.html', context)


def invite_member(email, team, sender):
    context = {
        'sender': sender,
        'team': team,
        'site': Site.objects.get(id=1),
    }
    email_subject = 'Invitation to join: %s' % team
    email_body_text = render_to_string('get_together/emails/teams/member_invite.txt', context)
    email_body_html = render_to_string('get_together/emails/teams/member_invite.html', context)
    email_recipients = [email]
    email_from = getattr(settings, 'DEFAULT_FROM_EMAIL', 'noreply@gettogether.community')

    success = send_mail(
        from_email=email_from,
        html_message=email_body_html,
        message=email_body_text,
        recipient_list=email_recipients,
        subject=email_subject,
        fail_silently=True,
    )

    EmailRecord.objects.create(
        sender=sender.user,
        recipient=None,
        email=email,
        subject=email_subject,
        body=email_body_text,
        ok=success
    )


def contact_member(member, body, sender):
    context = {
        'sender': sender,
        'team': member.team,
        'body': body,
        'site': Site.objects.get(id=1),
    }
    email_subject = 'A message from: %s' % member.team
    email_body_text = render_to_string('get_together/emails/teams/member_contact.txt', context)
    email_body_html = render_to_string('get_together/emails/teams/member_contact.html', context)
    email_recipients = [member.user.user.email]
    email_from = getattr(settings, 'DEFAULT_FROM_EMAIL', 'noreply@gettogether.community')

    success = send_mail(
        from_email=email_from,
        html_message=email_body_html,
        message=email_body_text,
        recipient_list=email_recipients,
        subject=email_subject,
        fail_silently=True,
    )
    EmailRecord.objects.create(
        sender=sender.user,
        recipient=member.user.user,
        email=member.user.user.email,
        subject=email_subject,
        body=email_body_text,
        ok=success
    )


@verify_csrf(token_key='csrftoken')
def change_member_role(request, team_id, profile_id):
    membership = get_object_or_404(Member, team__id=team_id, user__id=profile_id)

    if not request.user.profile.can_edit_team(membership.team):
        messages.add_message(request, messages.WARNING, message=_("You can not change member roles for this team."))
        return redirect(event.get_absolute_url())

    if request.GET.get('role', None) == 'admin':
        membership.role = Member.ADMIN
    elif request.GET.get('role', None) == 'moderator':
        membership.role = Member.MODERATOR
    elif request.GET.get('role', None) == 'normal':
        membership.role = Member.NORMAL
    membership.save()

    return redirect('manage-members', team_id=membership.team.id)