283 lines
10 KiB
Python
283 lines
10 KiB
Python
import random
|
|
from datetime import datetime
|
|
|
|
from django.core.cache import cache
|
|
from django.db.models import Count, Q
|
|
|
|
from account.decorators import check_contest_permission
|
|
from account.models import User
|
|
from contest.models import ContestRuleType
|
|
from submission.models import JudgeStatus, Submission
|
|
from utils.api import APIView
|
|
from utils.constants import CacheKey
|
|
|
|
from ..models import Problem, ProblemTag
|
|
from ..serializers import (
|
|
ProblemListSerializer,
|
|
ProblemSafeSerializer,
|
|
ProblemSerializer,
|
|
TagSerializer,
|
|
)
|
|
|
|
|
|
class ProblemTagAPI(APIView):
|
|
def get(self, request):
|
|
keyword = request.GET.get("keyword", "")
|
|
cache_key = f"{CacheKey.problem_tags}:{keyword}"
|
|
cached = cache.get(cache_key)
|
|
if cached is not None:
|
|
return self.success(cached)
|
|
|
|
qs = ProblemTag.objects
|
|
if keyword:
|
|
qs = ProblemTag.objects.filter(name__icontains=keyword)
|
|
tags = qs.annotate(problem_count=Count("problem")).filter(problem_count__gt=0)
|
|
data = TagSerializer(tags, many=True).data
|
|
cache.set(cache_key, data, 3600)
|
|
return self.success(data)
|
|
|
|
|
|
class PickOneAPI(APIView):
|
|
def get(self, request):
|
|
problems = Problem.objects.filter(contest_id__isnull=True, visible=True)
|
|
count = problems.count()
|
|
if count == 0:
|
|
return self.error("No problem to pick")
|
|
return self.success(problems[random.randint(0, count - 1)]._id)
|
|
|
|
|
|
class ProblemAPI(APIView):
|
|
@staticmethod
|
|
def _add_problem_status(request, queryset_values):
|
|
if request.user.is_authenticated:
|
|
profile = request.user.userprofile
|
|
acm_problems_status = profile.acm_problems_status.get("problems", {})
|
|
# paginate data
|
|
results = queryset_values.get("results")
|
|
if results is not None:
|
|
problems = results
|
|
else:
|
|
problems = [queryset_values]
|
|
for problem in problems:
|
|
problem["my_status"] = acm_problems_status.get(
|
|
str(problem["id"]), {}
|
|
).get("status")
|
|
|
|
def get(self, request):
|
|
# 问题详情页
|
|
problem_id = request.GET.get("problem_id")
|
|
if problem_id:
|
|
try:
|
|
problem = Problem.objects.select_related("created_by").get(
|
|
_id=problem_id, contest_id__isnull=True, visible=True
|
|
)
|
|
problem_data = ProblemSerializer(problem).data
|
|
self._add_problem_status(request, problem_data)
|
|
if request.user.is_authenticated:
|
|
failed_statuses = [
|
|
JudgeStatus.WRONG_ANSWER,
|
|
JudgeStatus.CPU_TIME_LIMIT_EXCEEDED,
|
|
JudgeStatus.REAL_TIME_LIMIT_EXCEEDED,
|
|
JudgeStatus.MEMORY_LIMIT_EXCEEDED,
|
|
JudgeStatus.RUNTIME_ERROR,
|
|
JudgeStatus.COMPILE_ERROR,
|
|
]
|
|
problem_data["my_failed_count"] = Submission.objects.filter(
|
|
user_id=request.user.id,
|
|
problem_id=problem.id,
|
|
result__in=failed_statuses,
|
|
).count()
|
|
else:
|
|
problem_data["my_failed_count"] = 0
|
|
return self.success(problem_data)
|
|
except Problem.DoesNotExist:
|
|
return self.error("Problem does not exist")
|
|
|
|
limit = request.GET.get("limit")
|
|
if not limit:
|
|
return self.error("Limit is needed")
|
|
|
|
problems = (
|
|
Problem.objects.select_related("created_by")
|
|
.prefetch_related("tags")
|
|
.filter(contest_id__isnull=True, visible=True)
|
|
.order_by("-create_time")
|
|
)
|
|
|
|
author = request.GET.get("author")
|
|
if author:
|
|
problems = problems.filter(created_by__username=author)
|
|
|
|
# 按照标签筛选
|
|
tag_text = request.GET.get("tag")
|
|
if tag_text:
|
|
problems = problems.filter(tags__name=tag_text)
|
|
|
|
# 搜索的情况
|
|
keyword = request.GET.get("keyword", "").strip()
|
|
if keyword:
|
|
problems = problems.filter(
|
|
Q(title__icontains=keyword) | Q(_id__icontains=keyword)
|
|
)
|
|
|
|
# 难度筛选
|
|
difficulty = request.GET.get("difficulty")
|
|
if difficulty:
|
|
problems = problems.filter(difficulty=difficulty)
|
|
|
|
# 排序
|
|
sort = request.GET.get("sort")
|
|
if sort and sort != "flowchart":
|
|
problems = problems.order_by(sort)
|
|
if sort and sort == "flowchart":
|
|
problems = problems.order_by("-allow_flowchart", "-show_flowchart", "-create_time")
|
|
|
|
# 根据profile 为做过的题目添加标记
|
|
data = self.paginate_data(request, problems, ProblemListSerializer)
|
|
self._add_problem_status(request, data)
|
|
return self.success(data)
|
|
|
|
|
|
class ContestProblemAPI(APIView):
|
|
def _add_problem_status(self, request, queryset_values):
|
|
if request.user.is_authenticated:
|
|
profile = request.user.userprofile
|
|
if self.contest.rule_type == ContestRuleType.ACM:
|
|
problems_status = profile.acm_problems_status.get(
|
|
"contest_problems", {}
|
|
)
|
|
else:
|
|
problems_status = profile.oi_problems_status.get("contest_problems", {})
|
|
for problem in queryset_values:
|
|
problem["my_status"] = problems_status.get(str(problem["id"]), {}).get(
|
|
"status"
|
|
)
|
|
|
|
@check_contest_permission(check_type="problems")
|
|
def get(self, request):
|
|
problem_id = request.GET.get("problem_id")
|
|
if problem_id:
|
|
try:
|
|
problem = Problem.objects.select_related("created_by").get(
|
|
_id=problem_id, contest=self.contest, visible=True
|
|
)
|
|
except Problem.DoesNotExist:
|
|
return self.error("Problem does not exist.")
|
|
if self.contest.problem_details_permission(request.user):
|
|
problem_data = ProblemSerializer(problem).data
|
|
self._add_problem_status(
|
|
request,
|
|
[
|
|
problem_data,
|
|
],
|
|
)
|
|
else:
|
|
problem_data = ProblemSafeSerializer(problem).data
|
|
return self.success(problem_data)
|
|
|
|
contest_problems = Problem.objects.select_related("created_by").prefetch_related("tags").filter(
|
|
contest=self.contest, visible=True
|
|
)
|
|
if self.contest.problem_details_permission(request.user):
|
|
data = ProblemListSerializer(contest_problems, many=True).data
|
|
self._add_problem_status(request, data)
|
|
else:
|
|
data = ProblemSafeSerializer(contest_problems, many=True).data
|
|
return self.success(data)
|
|
|
|
|
|
class ProblemSolvedPeopleCount(APIView):
|
|
def get(self, request):
|
|
problem_id = request.GET.get("problem_id")
|
|
rate = "0"
|
|
if not request.user.is_authenticated:
|
|
return self.success(rate)
|
|
submission_count = Submission.objects.filter(
|
|
user_id=request.user.id,
|
|
problem_id=problem_id,
|
|
result=JudgeStatus.ACCEPTED,
|
|
).count()
|
|
if submission_count == 0:
|
|
return self.success(rate)
|
|
today = datetime.today()
|
|
years_ago = datetime(today.year - 2, today.month, today.day, 0, 0)
|
|
total_count = User.objects.filter(
|
|
is_disabled=False, last_login__gte=years_ago
|
|
).count()
|
|
accepted_count = Submission.objects.filter(
|
|
problem_id=problem_id,
|
|
result=JudgeStatus.ACCEPTED,
|
|
create_time__gte=years_ago,
|
|
).aggregate(user_count=Count("user_id", distinct=True))["user_count"]
|
|
if accepted_count < total_count:
|
|
rate = "%.2f" % ((total_count - accepted_count) / total_count * 100)
|
|
else:
|
|
rate = "0"
|
|
return self.success(rate)
|
|
|
|
|
|
class SimilarProblemAPI(APIView):
|
|
def get(self, request):
|
|
problem_display_id = request.GET.get("problem_id")
|
|
if not problem_display_id:
|
|
return self.error("problem_id is required")
|
|
|
|
try:
|
|
problem = Problem.objects.get(_id=problem_display_id, contest__isnull=True)
|
|
except Problem.DoesNotExist:
|
|
return self.error("Problem not found")
|
|
|
|
tag_ids = list(problem.tags.values_list("id", flat=True))
|
|
if not tag_ids:
|
|
return self.success([])
|
|
|
|
exclude_ids = [problem_display_id]
|
|
if request.user.is_authenticated:
|
|
profile = request.user.userprofile
|
|
ac_display_ids = [
|
|
v["_id"]
|
|
for v in profile.acm_problems_status.get("problems", {}).values()
|
|
if v.get("status") == JudgeStatus.ACCEPTED
|
|
]
|
|
exclude_ids.extend(ac_display_ids)
|
|
|
|
similar = (
|
|
Problem.objects.select_related("created_by")
|
|
.prefetch_related("tags")
|
|
.filter(tags__in=tag_ids, visible=True, contest__isnull=True)
|
|
.exclude(_id__in=exclude_ids)
|
|
.distinct()
|
|
.order_by("difficulty")[:5]
|
|
)
|
|
return self.success(ProblemListSerializer(similar, many=True).data)
|
|
|
|
|
|
class ProblemAuthorAPI(APIView):
|
|
def get(self, request):
|
|
show_all = request.GET.get("all", "0") == "1"
|
|
cache_key = f"{CacheKey.problem_authors}{'_all' if show_all else '_only_visible'}"
|
|
cached_data = cache.get(cache_key)
|
|
if cached_data:
|
|
return self.success(cached_data)
|
|
|
|
problem_filter = {"contest_id__isnull": True, "created_by__is_disabled": False}
|
|
if not show_all:
|
|
problem_filter["visible"] = True
|
|
|
|
authors = (
|
|
Problem.objects.filter(**problem_filter)
|
|
.values("created_by__username")
|
|
.annotate(problem_count=Count("id"))
|
|
.order_by("-problem_count")
|
|
)
|
|
result = [
|
|
{
|
|
"username": author["created_by__username"],
|
|
"problem_count": author["problem_count"],
|
|
}
|
|
for author in authors
|
|
]
|
|
|
|
cache.set(cache_key, result, 7200)
|
|
return self.success(result)
|