import json
from django.http import JsonResponse, HttpResponseBadRequest
from django.views.decorators.csrf import csrf_exempt
from django.contrib.auth.decorators import login_required
from commu.usecases.post_service import PostService
from core.repositories.django_post_repository import DjangoPostRepository
from core.repositories.django_user_repository import DjangoUserRepository

# Service setup (could be moved to app config for larger apps)
user_repo = DjangoUserRepository()
post_repo = DjangoPostRepository()
post_service = PostService(post_repo, user_repo)

@csrf_exempt
@login_required
def create_post(request):
    if request.method != 'POST':
        return HttpResponseBadRequest("POST only")
    try:
        data = json.loads(request.body.decode())
        text = data.get("text")
        images = data.get("images", [])
        videos = data.get("videos", [])
        if not text:
            return JsonResponse({"error": "Missing post text"}, status=400)
        # Use logged-in Django user as author
        user_id = str(request.user.id)
        post = post_service.create_post(user_id, text, images, videos)
        return JsonResponse({
            "id": post.id,
            "text": post.text,
            "author_id": post.author_id,
            "images": post.images,
            "videos": post.videos
        })
    except Exception as e:
        return JsonResponse({"error": str(e)}, status=400)

def search_posts(request):
    q = request.GET.get("q", "")
    results = post_service.search_posts(q)
    posts = [{
        "id": p.id,
        "text": p.text,
        "author_id": p.author_id,
        "images": p.images,
        "videos": p.videos,
        "avg_rating": p.average_rating()
    } for p in results]
    return JsonResponse({"results": posts})

@csrf_exempt
@login_required
def rate_post(request):
    if request.method != 'POST':
        return HttpResponseBadRequest("POST only")
    try:
        data = json.loads(request.body.decode())
        post_id = data.get("post_id")
        rating = data.get("rating")
        if not post_id or rating is None:
            return JsonResponse({"error": "Missing post_id or rating"}, status=400)
        user_id = str(request.user.id)
        post_service.rate_post(post_id, user_id, int(rating))
        return JsonResponse({"ok": True})
    except Exception as e:
        return JsonResponse({"error": str(e)}, status=400)