mirror of
https://github.com/QingdaoU/OnlineJudge.git
synced 2024-09-21 16:33:22 +00:00
418 lines
18 KiB
Python
418 lines
18 KiB
Python
# coding=utf-8
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import json
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import datetime
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from functools import wraps
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from django.utils.timezone import now
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from django.shortcuts import render
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from django.db import IntegrityError
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from django.utils import dateparse
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from django.db.models import Q, Count, Sum
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from django.core.paginator import Paginator
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from rest_framework.views import APIView
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from utils.shortcuts import (serializer_invalid_response, error_response,
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success_response, paginate, rand_str, error_page)
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from account.models import REGULAR_USER, ADMIN, SUPER_ADMIN, User
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from account.decorators import login_required
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from group.models import Group
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from announcement.models import Announcement
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from .models import Contest, ContestProblem, ContestSubmission
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from .decorators import check_user_contest_permission
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from .serializers import (CreateContestSerializer, ContestSerializer, EditContestSerializer,
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CreateContestProblemSerializer, ContestProblemSerializer,
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EditContestProblemSerializer, ContestPasswordVerifySerializer,
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EditContestProblemSerializer)
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class ContestAdminAPIView(APIView):
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def post(self, request):
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"""
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比赛发布json api接口
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---
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request_serializer: CreateContestSerializer
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response_serializer: ContestSerializer
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"""
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serializer = CreateContestSerializer(data=request.data)
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if serializer.is_valid():
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data = serializer.data
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groups = []
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# 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
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# 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
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if data["contest_type"] in [1, 2]:
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if request.user.admin_type != SUPER_ADMIN:
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return error_response(u"只有超级管理员才可创建公开赛")
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if data["contest_type"] == 2:
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if not data["password"]:
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return error_response(u"此比赛为有密码的公开赛，密码不可为空")
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# 没有密码的公开赛 没有密码的小组赛
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elif data["contest_type"] == 0:
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if request.user.admin_type == SUPER_ADMIN:
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groups = Group.objects.filter(id__in=data["groups"])
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else:
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groups = Group.objects.filter(id__in=data["groups"], admin=request.user)
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if not groups.count():
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return error_response(u"请至少选择一个小组")
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if data["start_time"] >= data["end_time"]:
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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")
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try:
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contest = Contest.objects.create(title=data["title"], description=data["description"],
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mode=data["mode"], contest_type=data["contest_type"],
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show_rank=data["show_rank"], password=data["password"],
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show_user_submission=data["show_user_submission"],
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start_time=dateparse.parse_datetime(data["start_time"]),
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end_time=dateparse.parse_datetime(data["end_time"]),
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created_by=request.user, visible=data["visible"])
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except IntegrityError:
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return error_response(u"比赛名已经存在")
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contest.groups.add(*groups)
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return success_response(ContestSerializer(contest).data)
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else:
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return serializer_invalid_response(serializer)
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def put(self, request):
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"""
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比赛编辑json api接口
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---
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request_serializer: EditContestSerializer
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response_serializer: ContestSerializer
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"""
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serializer = EditContestSerializer(data=request.data)
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if serializer.is_valid():
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data = serializer.data
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groups = []
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try:
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contest = Contest.objects.get(id=data["id"])
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except Contest.DoesNotExist:
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return error_response(u"该比赛不存在！")
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try:
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contest = Contest.objects.get(title=data["title"])
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if contest.id != data["id"]:
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return error_response(u"该比赛名称已经存在")
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except Contest.DoesNotExist:
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pass
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if data["contest_type"] in [1, 2]:
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if request.user.admin_type != SUPER_ADMIN:
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return error_response(u"只有超级管理员才可创建公开赛")
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if data["contest_type"] == 2:
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if not data["password"]:
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return error_response(u"此比赛为有密码的公开赛，密码不可为空")
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elif data["contest_type"] == 0:
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if request.user.admin_type == SUPER_ADMIN:
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groups = Group.objects.filter(id__in=data["groups"])
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else:
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groups = Group.objects.filter(id__in=data["groups"], admin=request.user)
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if not groups.count():
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return error_response(u"请至少选择一个小组")
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if data["start_time"] >= data["end_time"]:
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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")
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if request.user.admin_type != SUPER_ADMIN and request.user != contest.created_by:
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return error_response(u"你无权修改该比赛!")
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contest.title = data["title"]
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contest.description = data["description"]
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contest.mode = data["mode"]
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contest.contest_type = data["contest_type"]
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contest.show_rank = data["show_rank"]
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contest.show_user_submission = data["show_user_submission"]
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contest.start_time = dateparse.parse_datetime(data["start_time"])
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contest.end_time = dateparse.parse_datetime(data["end_time"])
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contest.visible = data["visible"]
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contest.password = data["password"]
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contest.save()
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contest.groups.clear()
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contest.groups.add(*groups)
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return success_response(ContestSerializer(contest).data)
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else:
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return serializer_invalid_response(serializer)
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def get(self, request):
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"""
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比赛分页json api接口
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---
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response_serializer: ContestSerializer
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"""
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if request.user.admin_type == SUPER_ADMIN:
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contest = Contest.objects.all().order_by("-create_time")
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else:
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contest = Contest.objects.filter(created_by=request.user).order_by("-create_time")
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visible = request.GET.get("visible", None)
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if visible:
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contest = contest.filter(visible=(visible == "true"))
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keyword = request.GET.get("keyword", None)
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if keyword:
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contest = contest.filter(Q(title__contains=keyword) |
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Q(description__contains=keyword))
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return paginate(request, contest, ContestSerializer)
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class ContestProblemAdminAPIView(APIView):
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def post(self, request):
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"""
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比赛题目发布json api接口
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---
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request_serializer: CreateContestProblemSerializer
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response_serializer: ContestProblemSerializer
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"""
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serializer = CreateContestProblemSerializer(data=request.data)
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if serializer.is_valid():
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data = serializer.data
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try:
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contest = Contest.objects.get(id=data["contest_id"])
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except Contest.DoesNotExist:
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return error_response(u"比赛不存在")
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contest_problem = ContestProblem.objects.create(title=data["title"],
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description=data["description"],
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input_description=data["input_description"],
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output_description=data["output_description"],
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test_case_id=data["test_case_id"],
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samples=json.dumps(data["samples"]),
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time_limit=data["time_limit"],
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memory_limit=data["memory_limit"],
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created_by=request.user,
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hint=data["hint"],
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contest=contest,
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sort_index=data["sort_index"],
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score=data["score"])
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return success_response(ContestProblemSerializer(contest_problem).data)
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else:
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return serializer_invalid_response(serializer)
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def put(self, request):
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"""
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比赛题目编辑json api接口
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---
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request_serializer: EditContestProblemSerializer
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response_serializer: ContestProblemSerializer
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"""
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serializer = EditContestProblemSerializer(data=request.data)
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if serializer.is_valid():
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data = serializer.data
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try:
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contest_problem = ContestProblem.objects.get(id=data["id"])
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except ContestProblem.DoesNotExist:
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return error_response(u"该比赛题目不存在！")
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contest = Contest.objects.get(id=contest_problem.contest_id)
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if request.user.admin_type != SUPER_ADMIN and contest.created_by != request.user:
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return error_response(u"你无权修改该题目!")
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contest_problem.title = data["title"]
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contest_problem.description = data["description"]
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contest_problem.input_description = data["input_description"]
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contest_problem.output_description = data["output_description"]
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contest_problem.test_case_id = data["test_case_id"]
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contest_problem.time_limit = data["time_limit"]
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contest_problem.memory_limit = data["memory_limit"]
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contest_problem.samples = json.dumps(data["samples"])
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contest_problem.hint = data["hint"]
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contest_problem.visible = data["visible"]
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contest_problem.sort_index = data["sort_index"]
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contest_problem.score = data["score"]
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contest_problem.save()
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return success_response(ContestProblemSerializer(contest_problem).data)
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else:
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return serializer_invalid_response(serializer)
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def get(self, request):
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"""
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比赛题目分页json api接口
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---
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response_serializer: ContestProblemSerializer
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"""
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contest_problem_id = request.GET.get("contest_problem_id", None)
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if contest_problem_id:
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try:
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contest_problem = ContestProblem.objects.get(id=contest_problem_id)
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return success_response(ContestProblemSerializer(contest_problem).data)
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except ContestProblem.DoesNotExist:
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return error_response(u"比赛题目不存在")
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if request.user.admin_type == SUPER_ADMIN:
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contest_problem = ContestProblem.objects.all().order_by("sort_index")
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else:
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contest_problem = ContestProblem.objects.filter(created_by=request.user).order_by("sort_index")
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visible = request.GET.get("visible", None)
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if visible:
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contest_problem = contest_problem.filter(visible=(visible == "true"))
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keyword = request.GET.get("keyword", None)
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if keyword:
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contest_problem = contest_problem.filter(Q(title__contains=keyword) |
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Q(description__contains=keyword))
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contest_id = request.GET.get("contest_id", None)
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if contest_id:
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try:
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contest = Contest.objects.get(id=contest_id)
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except Contest.DoesNotExist:
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return error_response(u"该比赛不存在!")
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contest_problem = contest_problem.filter(contest=contest).order_by("sort_index")
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return paginate(request, contest_problem, ContestProblemSerializer)
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class ContestPasswordVerifyAPIView(APIView):
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@login_required
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def post(self, request):
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serializer = ContestPasswordVerifySerializer(data=request.data)
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if serializer.is_valid():
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data = request.data
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try:
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contest = Contest.objects.get(id=data["contest_id"], contest_type=2)
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except Contest.DoesNotExist:
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return error_response(u"密码错误")
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if data["password"] != contest.password:
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return error_response(u" 密码错误")
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else:
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if "contests" not in request.session:
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request.session["contests"] = []
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request.session["contests"].append(int(data["contest_id"]))
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# https://docs.djangoproject.com/en/dev/topics/http/sessions/#when-sessions-are-saved
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request.session.modified = True
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return success_response(True)
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else:
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return serializer_invalid_response(serializer)
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@check_user_contest_permission
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def contest_page(request, contest_id):
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"""
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单个比赛的详情页
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"""
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try:
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contest = Contest.objects.get(id=contest_id)
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except Contest.DoesNotExist:
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return error_page(request, u"比赛不存在")
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return render(request, "oj/contest/contest_index.html", {"contest": contest})
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@check_user_contest_permission
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def contest_problem_page(request, contest_id, contest_problem_id):
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"""
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单个比赛题目的详情页
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"""
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try:
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contest = Contest.objects.get(id=contest_id)
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except Contest.DoesNotExist:
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return error_page(request, u"比赛不存在")
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try:
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contest_problem = ContestProblem.objects.get(id=contest_problem_id, visible=True)
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except ContestProblem.DoesNotExist:
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return error_page(request, u"比赛题目不存在")
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warning = u"您已经提交过本题的正确答案，重复提交可能造成时间累计。"
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show_warning = False
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try:
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submission = ContestSubmission.objects.get(user=request.user, contest=contest, problem=contest_problem)
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show_warning = submission.ac
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except ContestSubmission.DoesNotExist:
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pass
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# 已经结束
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if contest.status == -1:
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show_warning = True
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warning = u"比赛已经结束"
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return render(request, "oj/contest/contest_problem.html", {"contest_problem": contest_problem, "contest": contest,
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"samples": json.loads(contest_problem.samples),
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"show_warning": show_warning, "warning": warning})
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@check_user_contest_permission
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def contest_problems_list_page(request, contest_id):
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"""
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比赛所有题目的列表页
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"""
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try:
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contest_problems = ContestProblem.objects.filter(contest=Contest.objects.get(id=contest_id)).order_by("sort_index")
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except Contest.DoesNotExist:
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return error_page(request, u"比赛题目不存在")
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# 右侧的公告列表
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announcements = Announcement.objects.filter(is_global=True, visible=True).order_by("-create_time")
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return render(request, "oj/contest/contest_problems_list.html", {"contest_problems": contest_problems,
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"announcements": announcements,
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"contest": {"id": contest_id}})
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def contest_list_page(request, page=1):
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"""
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所有比赛的列表页
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"""
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# 正常情况
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contests = Contest.objects.filter(visible=True).order_by("-create_time")
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# 搜索的情况
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keyword = request.GET.get("keyword", None)
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if keyword:
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contests = contests.filter(Q(title__contains=keyword) | Q(description__contains=keyword))
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# 筛选我能参加的比赛
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join = request.GET.get("join", None)
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if join:
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contests = contests.filter(Q(contest_type__in=[1, 2]) | Q(groups__in=request.user.group_set.all())).\
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filter(end_time__gt=datetime.datetime.now(), start_time__lt=datetime.datetime.now())
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paginator = Paginator(contests, 20)
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try:
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current_page = paginator.page(int(page))
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except Exception:
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return error_page(request, u"不存在的页码")
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previous_page = next_page = None
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try:
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previous_page = current_page.previous_page_number()
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except Exception:
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pass
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try:
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next_page = current_page.next_page_number()
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except Exception:
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pass
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# 右侧的公告列表
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announcements = Announcement.objects.filter(is_global=True, visible=True).order_by("-create_time")
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return render(request, "oj/contest/contest_list.html",
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{"contests": current_page, "page": int(page),
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"previous_page": previous_page, "next_page": next_page,
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"keyword": keyword, "announcements": announcements,
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"join": join})
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def _cmp(x, y):
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if x["total_ac"] > y["total_ac"]:
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return 1
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elif x["total_ac"] < y["total_ac"]:
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return -1
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else:
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if x["total_time"] < y["total_time"]:
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return 1
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else:
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return -1
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@check_user_contest_permission
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def contest_rank_page(request, contest_id):
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contest = Contest.objects.get(id=contest_id)
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contest_problems = ContestProblem.objects.filter(contest=contest).order_by("sort_index")
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result = ContestSubmission.objects.values("user_id").annotate(total_submit=Count("user_id"))
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for i in range(0, len(result)):
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# 这个人所有的提交
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submissions = ContestSubmission.objects.filter(user_id=result[i]["user_id"])
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result[i]["submissions"] = {}
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for item in submissions:
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result[i]["submissions"][item.problem_id] = item
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result[i]["total_ac"] = submissions.filter(ac=True).count()
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result[i]["user"] = User.objects.get(id=result[i]["user_id"])
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result[i]["total_time"] = submissions.filter(ac=True).aggregate(total_time=Sum("total_time"))["total_time"]
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return render(request, "oj/contest/contest_rank.html",
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{"contest": contest, "contest_problems": contest_problems, "result": sorted(result, cmp=_cmp, reverse=True)})
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