from django.contrib import auth
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework.authtoken.models import Token
from rest_framework.authentication import BasicAuthentication, TokenAuthentication
from .serializers import UserRegisterSerializer

from django.middleware.csrf import get_token
from django.contrib.auth import login

from api.utils import *
from api.models import File, Mission, Plan, Result
import requests

import json, csv

PLAN_FAILED = -1
MISSION_FAILED = -2

class RawDataTrans(APIView):
    authentication_classes = []
    permission_classes = []

    def get(self, request):
        if request.user:
            # 用户从前端发来请求
            return success("测试返回图数据")
        else:
            # 进程管理器发来请求
            # mission = Mission.objects.get(id=int(request.data.get('missionId')))
            plan = Plan.objects.get(id=int(request.data.get('planId')))
            return success("测试返回图数据")
        
    def post(self, request):
        # 处理进程反馈计算结果
        mission = Mission.objects.get(id=int(request.data.get('missionId')))
        plan = Plan.objects.get(id=int(request.data.get('planId')))
        nodes = request.data.get('nodes')
        edges = request.data.get('edges')
        progress = request.data.get('progress')
        print(request.data)
        print(mission, plan, progress)
        for param in [mission, plan, progress]:
            if param is None:
                print("结果传递参数不足")
                return failed(message="缺少结果参数")
            
        if int(progress) == 100:
            if not nodes or not edges:
                print("进度完成却没有返回结果数据")
                return failed(message="缺少结果参数")
        try:
            result = plan.own_result
            if int(progress) == 100:
                # 任务完成后需要保存结果文件
                # 读取nodes和edges，生成结果文件
                nodeFile = File(type='csv', usage='result', content='node', user=plan.user)
                nodeFile.save()
                if not nodeFile.generate(nodes) == OK:
                    print("保存节点结果文件失败")
                    return failed(message="保存节点结果文件失败")
                edgeFile = File(type='csv', usage='result', content='edge', user=plan.user)
                edgeFile.save()
                if not edgeFile.generate(edges) == OK:
                    print("保存边结果文件失败")
                    return failed(message="保存边结果文件失败")
                nodeFile.associate = edgeFile
                edgeFile.associate = nodeFile
                nodeFile.save()
                edgeFile.save()

                # 将文件与结果绑定
                result.nodeFile = nodeFile
                result.edgeFile = edgeFile
                result.progress = 100
                result.save()

            else:
                # 进度不到百分百，正在执行中，仅更新进度数值
                # 注意使用负数进度值表示单个处理失败或整个任务失败
                result.progress = int(progress)
                result.save()
            return success(message="保存结果文件成功")
        except Result.DoesNotExist:
            # 不存在结果文件，需要新建
            result = Result()
            result.plan = plan
            result.mission = mission
            result.user = plan.user
            result.progress = int(progress)
            result.save()

            return success(message="保存结果文件成功")