import logging
import mysite.settings

from django.shortcuts import render, get_object_or_404
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth.decorators import login_required
from django.shortcuts import redirect
from django.utils import timezone
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.auth.models import User

from .models import Post, CustomUser
from taggit.models import Tag
from .forms import PostForm, NewTagForm
from django.contrib import messages
from post_office import mail
from hitcount.models import HitCount
from hitcount.views import HitCountMixin


def navlogin(request):
    log = logging.getLogger('mysite')
    logout(request)
    error = ""
    if request.POST:
        username = request.POST.get("username", "?")
        password = request.POST.get("password", "?")

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                return redirect(mysite.settings.LOGIN_REDIRECT_URL)
            else:
                log.info("Inactive user {} tried to login".format(username))
                error = "Ihre Benutzerkennung wurde deaktiviert."
        else:
            log.info("Login failed for {}".format(username))
            error = "Benutzername oder Kennwort falsch."
    context = {'error': error}
    return render(request, 'index.html', context)

#external code customised
#import from https://tutorial.djangogirls.org/en/django_forms/
#start ---
@login_required
def post_list(request, slug=None):
    log = logging.getLogger('mysite')
    posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')
    if slug:
        tag = get_object_or_404(Tag, slug=slug)
        posts = posts.filter(tags__in=[tag])
    return render(request, 'post_list.html', locals())


@login_required
def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    hit_count = HitCount.objects.get_for_object(post)
    hit_count_response = HitCountMixin.hit_count(request, hit_count)
    return render(request, 'post_detail.html', locals())


@login_required
@staff_member_required
def post_new(request):
    if request.method == "POST":
        form = PostForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False)
            post.author = request.user
            post.save()
            form.save_m2m()
            return redirect('post_detail', pk=post.pk)
    else:
        form = PostForm()
    return render(request, 'post_edit.html', {'form': form})


@login_required
@staff_member_required
def post_edit(request, pk):
    post = get_object_or_404(Post, pk=pk)
    if request.method == "POST":
        form = PostForm(request.POST, instance=post)
        if form.is_valid():
            post = form.save(commit=False)
            post.author = request.user
            post.save()
            form.save_m2m()
            return redirect('post_detail', pk=post.pk)
    else:
        form = PostForm(instance=post)
    return render(request, 'post_edit.html', {'form': form})


@login_required
@staff_member_required
def post_draft_list(request):
    posts = Post.objects.filter(
        published_date__isnull=True).order_by('created_date')
    return render(request, 'post_draft_list.html', {'posts': posts})


@login_required
@staff_member_required
def post_publish(request, pk):
    post = get_object_or_404(Post, pk=pk)
    post.publish()
    return redirect('post_detail', pk=pk)


@login_required
@staff_member_required
def post_remove(request, pk):
    post = get_object_or_404(Post, pk=pk)
    messages.info(request, 'Der Artikel "' + post.title + '" wurde gelöscht')
    post.delete()
    return redirect('post_list')
#end ---

@login_required
def tag_list(request):
    log = logging.getLogger('mysite')
    u = User.objects.get(username=request.user)
    posts = Post.objects.none()
    if u:
        tags_user = Tag.objects.filter(customuser__user = u)
        log.info(tags_user)
    for tag in tags_user:
        query = Post.objects.filter(tags__in=[tag]).order_by('-published_date')
        posts = list(set(posts)|set(query))
        log.info(posts)
    return render(request, 'tag_list.html', {'posts': posts})

@login_required      
def search_add(request):    
    posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('published_date')
    if request.method == 'GET':
        search_query = request.GET.get('search_box', None)
        posts = posts.filter(tags__name__in=[search_query])
    u = User.objects.get(username=request.user)
    if u:
        tagsuser = Tag.objects.filter(customuser__user = u)
    user_instance = get_object_or_404(CustomUser, user=request.user)
    if request.method == "POST":
        form = NewTagForm(request.POST, instance=user_instance)
        if form.is_valid():
            obj = form.save(commit=False)
            obj.user = request.user
            tag_names = [tag.name for tag in Tag.objects.all()]
            m_tags = form.cleaned_data['tags']
            m_tags = ' '.join(str(m_tags) for m_tags in m_tags)
            if m_tags in tag_names:
                obj.tags.add(m_tags)
                obj.save()
                messages.info(request, 'Der Tag "' + m_tags + '" wurde gespeichert')
                return redirect('/search/')
            else:
                messages.info(request, 'Sorry !! Den Tag den du suchst gibt es leider nicht!')
    else:
        form = NewTagForm()
    return render(request, 'search_add.html', locals())


#external code customised
#import from https://github.com/ui/django-post_office
mail.send(
    # List of email addresses also accepted
    'kleinhenz.e@gmail.com', 
    'esther.kleinhenz@web.de',
    subject='My email',
    message='Hi there!',
    html_message='Hi <strong>there</strong>!',
)