# -*- coding: utf-8 -*-

from django.db import transaction
from django.http import JsonResponse

from rest_framework import viewsets

from account.models import UserInfo
from group.models import GroupInfo, GroupUserInfo, GroupPhotoInfo
from group.serializers import GroupInfoSerializer, GroupUserInfoSerializer, GroupPhotoInfoSerializer

from utils.ip_utils import ip_addr

from curtail_uuid import CurtailUUID
from TimeConvert import TimeConvert as tc


@transaction.atomic
def group_create_api(request):
    user_id = request.POST.get('user_id', '')

    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    group_id = CurtailUUID.uuid(GroupInfo, 'group_id')
    group = GroupInfo.objects.create(
        group_id=group_id,
        admin_id=user_id,
        group_from=GroupInfo.APP_GROUP,
    )
    GroupUserInfo.objects.create(
        group_id=group_id,
        user_id=user_id,
        nickname=user.username,
        admin=True,
        user_status=GroupUserInfo.PASSED,
        passed_at=tc.utc_datetime(),
    )

    return JsonResponse({
        'status': 200,
        'message': u'群组创建成功',
        'data': {
            'group_id': group_id,
            'users': group.users(user_id)
        },
    })


def group_detail_api(request):
    group_id = request.POST.get('group_id', '')
    user_id = request.POST.get('user_id', '')

    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    try:
        group = GroupInfo.objects.get(group_id=group_id)
    except GroupInfo.DoesNotExist:
        return JsonResponse({
            'status': 4020,
            'message': u'群组不存在',
        })

    return JsonResponse({
        'status': 200,
        'message': u'获取群组详情成功',
        'data': {
            'group_id': group_id,
            'users': group.users(user_id)
        },
    })


def group_join_api(request):
    group_id = request.POST.get('group_id', '')
    user_id = request.POST.get('user_id', '')
    nickname = request.POST.get('nickname', '')

    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    try:
        group = GroupInfo.objects.get(group_id=group_id)
    except GroupInfo.DoesNotExist:
        return JsonResponse({
            'status': 4020,
            'message': u'群组不存在',
        })
    if group.group_lock:
        return JsonResponse({
            'status': 4021,
            'message': u'群组已锁定',
        })

    if GroupUserInfo.objects.filter(group_id=group_id, user_id=user_id, user_status__in=[GroupUserInfo.APPLYING, GroupUserInfo.PASSED]).exists():
        return JsonResponse({
            'status': 4026,
            'message': u'重复加群申请',
        })

    GroupUserInfo.objects.create(
        group_id=group_id,
        user_id=user_id,
        nickname=nickname or user.username,
        admin=False,
        user_status=GroupUserInfo.APPLYING,
    )

    return JsonResponse({
        'status': 200,
        'message': u'申请已提交',
    })


def group_lock_api(request):
    group_id = request.POST.get('group_id', '')
    user_id = request.POST.get('user_id', '')

    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    try:
        group = GroupInfo.objects.get(group_id=group_id)
    except GroupInfo.DoesNotExist:
        return JsonResponse({
            'status': 4020,
            'message': u'群组不存在',
        })
    if group.admin_id != user_id:
        return JsonResponse({
            'status': 4023,
            'message': u'没有锁定权限',
        })

    group.group_lock = True
    group.save()

    return JsonResponse({
        'status': 200,
        'message': u'锁定成功',
    })


def group_pass_api(request):
    group_id = request.POST.get('group_id', '')
    admin_id = request.POST.get('admin_id', '')
    user_id = request.POST.get('user_id', '')

    try:
        admin = UserInfo.objects.get(user_id=admin_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })
    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    try:
        group = GroupInfo.objects.get(group_id=group_id)
    except GroupInfo.DoesNotExist:
        return JsonResponse({
            'status': 4020,
            'message': u'群组不存在',
        })
    if group.admin_id != admin_id:
        return JsonResponse({
            'status': 4024,
            'message': u'没有通过权限',
        })

    try:
        group_user = GroupUserInfo.objects.get(group_id=group_id, user_id=user_id, user_status=GroupUserInfo.APPLYING)
    except GroupUserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4027,
            'message': u'加群申请不存在',
        })
    group_user.user_status = GroupUserInfo.PASSED
    group_user.passed_at = tc.utc_datetime()
    group_user.save()

    return JsonResponse({
        'status': 200,
        'message': u'申请通过成功',
        'data': {
            'group_id': group_id,
            'users': group.users(user_id)
        },
    })


def group_refuse_api(request):
    group_id = request.POST.get('group_id', '')
    admin_id = request.POST.get('admin_id', '')
    user_id = request.POST.get('user_id', '')

    try:
        admin = UserInfo.objects.get(user_id=admin_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })
    try:
        user = UserInfo.objects.get(user_id=user_id)
    except UserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4011,
            'message': u'用户不存在',
        })

    try:
        group = GroupInfo.objects.get(group_id=group_id)
    except GroupInfo.DoesNotExist:
        return JsonResponse({
            'status': 4020,
            'message': u'群组不存在',
        })
    if group.admin_id != admin_id:
        return JsonResponse({
            'status': 4025,
            'message': u'没有拒绝权限',
        })

    try:
        group_user = GroupUserInfo.objects.get(group_id=group_id, user_id=user_id, user_status=GroupUserInfo.APPLYING)
    except GroupUserInfo.DoesNotExist:
        return JsonResponse({
            'status': 4027,
            'message': u'加群申请不存在',
        })
    group_user.user_status = GroupUserInfo.REFUSED
    group_user.refused_at = tc.utc_datetime()
    group_user.save()

    return JsonResponse({
        'status': 200,
        'message': u'申请拒绝成功',
        'data': {
            'group_id': group_id,
            'users': group.users(user_id)
        },
    })


class GroupInfoViewSet(viewsets.ModelViewSet):
    queryset = GroupInfo.objects.all().order_by('-created_at')
    serializer_class = GroupInfoSerializer


class GroupUserInfoViewSet(viewsets.ModelViewSet):
    queryset = GroupUserInfo.objects.all().order_by('-created_at')
    serializer_class = GroupUserInfoSerializer


class GroupPhotoInfoViewSet(viewsets.ModelViewSet):
    queryset = GroupPhotoInfo.objects.all().order_by('-created_at')
    serializer_class = GroupPhotoInfoSerializer