OnlineJudge/contest/views.py

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# coding=utf-8
import json
from django.shortcuts import render
from django.db import IntegrityError
from django.utils import dateparse
from django.db.models import Q
from rest_framework.views import APIView
from utils.shortcuts import (serializer_invalid_response, error_response,
success_response, paginate, rand_str, error_page)
from account.models import REGULAR_USER, ADMIN, SUPER_ADMIN
from group.models import Group
from .models import Contest, ContestProblem
from .serializers import (CreateContestSerializer, ContestSerializer, EditContestSerializer,
CreateContestProblemSerializer, ContestProblemSerializer, EditContestProblemSerializer)
def contest_page(request, contest_id):
pass
class ContestAdminAPIView(APIView):
def post(self, request):
"""
比赛发布json api接口
---
request_serializer: CreateContestSerializer
response_serializer: ContestSerializer
"""
serializer = CreateContestSerializer(data=request.data)
if serializer.is_valid():
data = serializer.data
groups = []
# 首先判断比赛的类型: 0 即为是小组赛1 即为是无密码的公开赛2 即为是有密码的公开赛
# 此时为有密码的公开赛,并且此时只能超级管理员才有权限此创建比赛
if data["contest_type"] in [1, 2]:
if request.user.admin_type != SUPER_ADMIN:
return error_response(u"只有超级管理员才可创建公开赛")
if data["contest_type"] == 2:
if not data["password"]:
return error_response(u"此比赛为有密码的公开赛,密码不可为空")
# 没有密码的公开赛 没有密码的小组赛
elif data["contest_type"] == 0:
if request.user.admin_type == SUPER_ADMIN:
groups = Group.objects.filter(id__in=data["groups"])
else:
groups = Group.objects.filter(id__in=data["groups"], admin=request.user)
if not groups.count():
return error_response(u"请至少选择一个小组")
if data["start_time"] >= data["end_time"]:
return error_response(u"比赛的开始时间不能晚于或等于比赛结束的时间")
try:
contest = Contest.objects.create(title=data["title"], description=data["description"],
mode=data["mode"], contest_type=data["contest_type"],
show_rank=data["show_rank"], password=data["password"],
show_user_submission=data["show_user_submission"],
start_time=dateparse.parse_datetime(data["start_time"]),
end_time=dateparse.parse_datetime(data["end_time"]),
created_by=request.user, visible=data["visible"])
except IntegrityError:
return error_response(u"比赛名已经存在")
contest.groups.add(*groups)
return success_response(ContestSerializer(contest).data)
else:
return serializer_invalid_response(serializer)
def put(self, request):
"""
比赛编辑json api接口
---
request_serializer: EditContestSerializer
response_serializer: ContestSerializer
"""
serializer = EditContestSerializer(data=request.data)
if serializer.is_valid():
data = serializer.data
groups = []
try:
contest = Contest.objects.get(id=data["id"])
except Contest.DoesNotExist:
return error_response(u"该比赛不存在!")
try:
contest = Contest.objects.get(title=data["title"])
if contest.id != data["id"]:
return error_response(u"该比赛名称已经存在")
except Contest.DoesNotExist:
pass
if data["contest_type"] in [1, 2]:
if request.user.admin_type != SUPER_ADMIN:
return error_response(u"只有超级管理员才可创建公开赛")
if data["contest_type"] == 2:
if not data["password"]:
return error_response(u"此比赛为有密码的公开赛,密码不可为空")
elif data["contest_type"] == 0:
if request.user.admin_type == SUPER_ADMIN:
groups = Group.objects.filter(id__in=data["groups"])
else:
groups = Group.objects.filter(id__in=data["groups"], admin=request.user)
if not groups.count():
return error_response(u"请至少选择一个小组")
if data["start_time"] >= data["end_time"]:
return error_response(u"比赛的开始时间不能晚于或等于比赛结束的时间")
contest.title = data["title"]
contest.description = data["description"]
contest.mode = data["mode"]
contest.contest_type = data["contest_type"]
contest.show_rank = data["show_rank"]
contest.show_user_submission = data["show_user_submission"]
contest.start_time = dateparse.parse_datetime(data["start_time"])
contest.end_time = dateparse.parse_datetime(data["end_time"])
contest.visible = data["visible"]
contest.password = data["password"]
contest.save()
contest.groups.clear()
contest.groups.add(*groups)
return success_response(ContestSerializer(contest).data)
else:
return serializer_invalid_response(serializer)
def get(self, request):
"""
比赛分页json api接口
---
response_serializer: ContestSerializer
"""
contest = Contest.objects.all().order_by("-last_updated_time")
visible = request.GET.get("visible", None)
if visible:
contest = contest.filter(visible=(visible == "true"))
keyword = request.GET.get("keyword", None)
if keyword:
contest = contest.filter(Q(title__contains=keyword) |
Q(description__contains=keyword))
return paginate(request, contest, ContestSerializer)
class ContestProblemAdminAPIView(APIView):
def post(self, request):
"""
比赛题目发布json api接口
---
request_serializer: CreateContestProblemSerializer
response_serializer: ContestProblemSerializer
"""
serializer = CreateContestProblemSerializer(data=request.data)
if serializer.is_valid():
data = serializer.data
try:
contest = Contest.objects.get(id=data["contest_id"])
except Contest.DoesNotExist:
return error_response(u"比赛不存在")
contest_problem = ContestProblem.objects.create(title=data["title"],
description=data["description"],
input_description=data["input_description"],
output_description=data["output_description"],
test_case_id=data["test_case_id"],
samples=json.dumps(data["samples"]),
time_limit=data["time_limit"],
memory_limit=data["memory_limit"],
created_by=request.user,
hint=data["hint"],
contest=contest,
sort_index=data["sort_index"])
return success_response(ContestProblemSerializer(contest_problem).data)
else:
return serializer_invalid_response(serializer)
def put(self, request):
"""
比赛题目编辑json api接口
---
request_serializer: EditContestProblemSerializer
response_serializer: ContestProblemSerializer
"""
serializer = EditContestProblemSerializer(data=request.data)
if serializer.is_valid():
data = serializer.data
try:
contest_problem = ContestProblem.objects.get(id=data["id"])
except ContestProblem.DoesNotExist:
return error_response(u"该比赛题目不存在!")
contest_problem.title = data["title"]
contest_problem.description = data["description"]
contest_problem.input_description = data["input_description"]
contest_problem.output_description = data["output_description"]
contest_problem.test_case_id = data["test_case_id"]
contest_problem.time_limit = data["time_limit"]
contest_problem.memory_limit = data["memory_limit"]
contest_problem.samples = json.dumps(data["samples"])
contest_problem.hint = data["hint"]
contest_problem.visible = data["visible"]
contest_problem.sort_index = data["sort_index"]
contest_problem.save()
return success_response(ContestProblemSerializer(contest_problem).data)
else:
return serializer_invalid_response(serializer)
def get(self, request):
"""
比赛题目分页json api接口
---
response_serializer: ContestProblemSerializer
"""
contest_problem_id = request.GET.get("contest_problem_id", None)
if contest_problem_id:
try:
contest_problem = ContestProblem.objects.get(id=contest_problem_id)
return success_response(ContestProblemSerializer(contest_problem).data)
except ContestProblem.DoesNotExist:
return error_response(u"比赛题目不存在")
contest_problem = ContestProblem.objects.all().order_by("sort_index")
visible = request.GET.get("visible", None)
if visible:
contest_problem = contest_problem.filter(visible=(visible == "true"))
keyword = request.GET.get("keyword", None)
if keyword:
contest_problem = contest_problem.filter(Q(title__contains=keyword) |
Q(description__contains=keyword))
return paginate(request, contest_problem, ContestProblemSerializer)