from typing import Any, Dict, List

from django.http import HttpRequest, HttpResponse

from zerver.lib.drafts import (
    do_create_drafts,
    do_delete_draft,
    do_edit_draft,
    draft_dict_validator,
    draft_endpoint,
)
from zerver.lib.request import REQ, has_request_variables
from zerver.lib.response import json_success
from zerver.lib.validator import check_list
from zerver.models import Draft, UserProfile


@draft_endpoint
def fetch_drafts(request: HttpRequest, user_profile: UserProfile) -> HttpResponse:
    user_drafts = Draft.objects.filter(user_profile=user_profile).order_by("last_edit_time")
    draft_dicts = [draft.to_dict() for draft in user_drafts]
    return json_success({"count": user_drafts.count(), "drafts": draft_dicts})


@draft_endpoint
@has_request_variables
def create_drafts(
    request: HttpRequest,
    user_profile: UserProfile,
    draft_dicts: List[Dict[str, Any]] = REQ(
        "drafts", json_validator=check_list(draft_dict_validator)
    ),
) -> HttpResponse:
    created_draft_objects = do_create_drafts(draft_dicts, user_profile)
    draft_ids = [draft_object.id for draft_object in created_draft_objects]
    return json_success({"ids": draft_ids})


@draft_endpoint
@has_request_variables
def edit_draft(
    request: HttpRequest,
    user_profile: UserProfile,
    draft_id: int,
    draft_dict: Dict[str, Any] = REQ("draft", json_validator=draft_dict_validator),
) -> HttpResponse:
    do_edit_draft(draft_id, draft_dict, user_profile)
    return json_success()


@draft_endpoint
def delete_draft(request: HttpRequest, user_profile: UserProfile, draft_id: int) -> HttpResponse:
    do_delete_draft(draft_id, user_profile)
    return json_success()