from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse

from .models import Post
from comments.models import Comment

from comments import services as comments_services

import re


def index(request):
    """Список постов."""
    post_list = Post.objects.order_by("-pub_date")[:20]
    return render(request, "posts/index.html", {"posts": post_list})


def detail(request, post_id):
    """Страница с просмотром поста."""
    # вынести отсюда все. Также надо обработать текст поста тут.

    post = get_object_or_404(Post, pk=post_id)
    comments = post.comment_set.all()
    comments_count = comments.count()

    _nickname = request.COOKIES.get("nickname")
    nickname = comments_services.decode_nickname(_nickname) if _nickname else ""

    images = post.image_set.all()
    # вывод картинок в посте, замена шаблона по регулярке
    post.text = re.sub(
        r"\[\[image\:(.+?)\]\]",
        lambda x: f"<img src='{images.filter(slug=x.group(1))[0].image.url}'/>",
        post.text,
    )

    return render(
        request,
        "posts/post.html",
        {
            "post": post,
            "comments": comments,
            "comments_count": comments_count,
            "nickname": nickname,
        },
    )