import datetime
import os

from django.http import HttpResponse
from rest_framework.response import Response
from rest_framework.views import APIView

from PrivacyRetrieval.settings import PROJECT_ROOT, HTTP_HEAD
from apps.project.models import RetrievalProject

import logging
logger = logging.getLogger('django')


class ProjectView(APIView):
    # get detail of project
    @staticmethod
    def get(request, project_id, *args, **kwargs):
        project = RetrievalProject.objects.filter(id=project_id, delete=False)
        if not project:
            logger.error("项目已删除或不存在")
            return HttpResponse(status=500, content='项目已删除或不存在')
        project = project[0]

        task_set = project.retrievaltask_set.filter(delete=False)
        task_info = []
        if task_set:
            for task in task_set:
                task_info.append({
                    'id': task.id,
                    'title': task.title,
                    'type': task.type,
                    'state': task.state,
                    'description': task.description
                })

        return Response({
            'id': project.id,
            'title': project.title,
            'type': project.type,
            'project_name': project.project_file.split('/')[-1],
            'project_url': HTTP_HEAD + project.project_file,
            'task_info': task_info
        })

    # edit project
    @staticmethod
    def put(request, project_id, *args, **kwargs):
        title = request.POST.get('title')
        project_type = request.POST.get('type')
        file = request.FILES.get('project')

        project = RetrievalProject.objects.filter(id=project_id, delete=False)
        if not project:
            logger.error("项目已删除或不存在")
            return HttpResponse(status=500, content='项目已删除或不存在')
        project = project[0]

        if not title:
            logger.error("项目名称不能为空")
            return HttpResponse(status=500, content='项目名称不能为空')

        if not project_type:
            logger.error("项目类型不能为空")
            return HttpResponse(status=500, content='项目类型不能为空')

        update_time = datetime.datetime.now()

        if file:
            file_dir = PROJECT_ROOT + str(project.id) + "/" + str(update_time)
            if not os.path.exists(file_dir):
                os.makedirs(file_dir)
            file_path = file_dir + "/" + file.name
            with open(file_path, 'wb') as f:
                f.write(file.read())
            f.close()
            project.project_file = file_path
            project.save()

        project.title = title
        project.type = project_type
        project.update_time = update_time
        project.save()
        return HttpResponse(status=200, content='编辑已保存')

    # delete project
    @staticmethod
    def delete(request, project_id, *args, **kwargs):
        project = RetrievalProject.objects.filter(id=project_id, delete=False)
        if not project:
            logger.error("项目已删除或不存在")
            return HttpResponse(status=500, content='项目已删除或不存在')
        project = project[0]
        project.delete = True
        project.save()

        task_set = project.retrievaltask_set.filter(delete=False)
        if task_set:
            for task in task_set:
                task.delete = True
                task.save()
        return HttpResponse(status=200, content='项目已删除')