from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.shortcuts import get_object_or_404, redirect, render
from django.utils import timezone
from django.utils.text import slugify
from django.views.decorators.http import require_http_methods, require_POST

from blog.models import Post


def post_list(request):
    posts = Post.objects.filter(is_published=True)
    return render(request, "blog/list.html", {"posts": posts})


def post_detail(request, slug):
    post = get_object_or_404(Post, slug=slug, is_published=True)
    return render(request, "blog/detail.html", {"post": post})


@login_required
def portal_list(request):
    posts = Post.objects.all()
    return render(request, "blog/portal/list.html", {"posts": posts})


@login_required
@require_http_methods(["GET", "POST"])
def portal_edit(request, pk=None):
    post = get_object_or_404(Post, pk=pk) if pk else None
    if request.method == "POST":
        title = (request.POST.get("title") or "").strip()
        body = (request.POST.get("body") or "").strip()
        excerpt = (request.POST.get("excerpt") or "").strip()
        slug = (request.POST.get("slug") or "").strip()
        is_published = request.POST.get("is_published") == "on"
        if not title or not body:
            messages.error(request, "Title and body are required.")
        else:
            if post is None:
                post = Post(author=request.user)
            post.title = title
            post.body = body
            post.excerpt = excerpt
            post.slug = slugify(slug)[:220] if slug else ""
            post.is_published = is_published
            if is_published and post.published_at is None:
                post.published_at = timezone.now()
            if not is_published:
                post.published_at = None
            post.save()
            messages.success(request, f'Saved “{post.title}”.')
            return redirect("blog_portal:portal_list")
    return render(request, "blog/portal/edit.html", {"post": post})


@login_required
@require_POST
def portal_delete(request, pk):
    post = get_object_or_404(Post, pk=pk)
    title = post.title
    post.delete()
    messages.success(request, f'Deleted “{title}”.')
    return redirect("blog_portal:portal_list")