# coding=utf-8
import logging

from django.http import JsonResponse
from django.views.generic import View
from typing import TYPE_CHECKING
import simplejson as json
from voluptuous import MultipleInvalid

from apilib.utils_sys import MemcachedLock
from apps.web.constant import Const, START_DEVICE_STATUS
from apps.web.core import ROLE
from apps.web.core.exceptions import ServiceException
from apps.web.core.services import wrapper_start_device, StartDeviceEngine
from apps.web.core.utils import JsonOkResponse, JsonErrorResponse, async_operation_no_catch
from apps.web.device.models import DeviceType
from apps.web.exceptions import UnifiedConsumeOrderError
from apps.web.user.models import ConsumeRecord, UserBalanceLog, Card, CardBalanceLog
from apps.web.user.utils import get_consume_order
from apps.web.user.utils2 import UnifiedConsumeOrderManager, ConsumeOrderStateEngine, get_paginate
from apps.web.user.validator2 import unifiedConsumeOrderSchema, startConsumeOrderSchema
from apps.web.utils import error_tolerate, permission_required, get_start_key_status

if TYPE_CHECKING:
    from django.core.handlers.wsgi import WSGIRequest


logger = logging.getLogger(__name__)


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"预下单错误，请刷新页面重试"))
@permission_required(ROLE.myuser)
def unifiedOrder(request):  # type:(WSGIRequest) -> JsonResponse
    """
    创建消费订单
    """
    payload = json.loads(request.body)
    try:
        data = unifiedConsumeOrderSchema(payload)
    except MultipleInvalid as me:
        return JsonErrorResponse(description=u"启动参数校验异常【】".format(me.path[0]))

    # 解析支付参数 创建支付环境
    try:
        with UnifiedConsumeOrderManager(**data) as manager:
            order = manager.buildOrder()
    except UnifiedConsumeOrderError as ue:
        return JsonErrorResponse(description=ue.message)

    ConsumeOrderStateEngine(order).to_wait_confirm()
    return JsonOkResponse(payload={
        "orderNo": order.orderNo,
        "price": order.price,
        "isFree": order.isFree,
        "isPostPaid": order.isPostPaid,
        "logicalCode": order.logicalCode,
        "package": order.package.showDict
    })


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"获取预下单错误，请刷新页面重试"))
@permission_required(ROLE.myuser)
def getUnifiedOrder(request):
    orderNo = request.GET.get("orderNo")
    order = get_consume_order(orderNo)  # type: ConsumeRecord
    if not order:
        return JsonErrorResponse(u"获取订单失败，请刷新页面重试")

    if order.status != order.Status.WAIT_CONF:
        return JsonErrorResponse(u"订单状态异常，请重新扫码下单")

    balance = order.user.calc_currency_balance(
        dealer=order.owner,
        group=order.group
    )

    return JsonOkResponse(payload={
        "orderNo": order.orderNo,
        "price": order.price,
        "isFree": order.isFree,
        "balance": balance,
        "isPostPaid": order.isPostPaid,
        "logicalCode": order.logicalCode,
        "package": order.package.showDict
    })


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"启动设备异常，请刷新页面重试"))
@permission_required(ROLE.myuser)
def startAction(request):
    """
    启动设备
    """
    payload = json.loads(request.body)
    try:
        data = startConsumeOrderSchema(payload)
    except MultipleInvalid as me:
        return JsonErrorResponse(description=u"启动参数校验异常【】".format(me.path[0]))

    order = get_consume_order(data["orderNo"])  # type: ConsumeRecord
    if not order:
        logger.warning('[_start_device ERROR] cannot get order, order = {}'.format(data))
        return JsonErrorResponse(description=u"启动参数校验异常【订单查询失败】")

    # 启动锁，防止用户对同一笔订单重复下单并且支付
    lockKey = order.startLockKey
    logger.info(
        '[_start_device] user({}) on device(devNo={}, port={}) lockKey={}, order={}'.format(
             order.openId, order.devNo, order.port, lockKey, order
        )
    )
    locker = MemcachedLock(key=lockKey, value='1', expire=180)
    if not locker.acquire():
        logger.error(
            '[_start_device ERROR] cannot get device lock<{}>, openId={}, devNo={}, port={}'.format(lockKey, order.openId, order.devNo, order.port)
        )
        return JsonErrorResponse(description=u'订单正在运行中，请刷新界面查看订单详情')

    # 订单的状态锁住 防止用户对同一笔订单重复支付
    try:
        proxy = StartDeviceEngine(order)  # type: StartDeviceEngine

        # 检查订单的支付情况 更多的是余额检验 检验完成之后 根据订单的支付选择 决定是否生成支付信息并添加
        paymentInfo = proxy.get_payment_info()
        paymentInfo and order.update_payment(paymentInfo)
    except ServiceException as se:
        ConsumeOrderStateEngine(order).to_failure(se.result["description"])
        return JsonResponse(se.result)

    # 这个地方只负责将设备的启动传递到新的线程 对于设备启动的结果实际上是未知的
    release_locker = True
    try:
        async_operation_no_catch(wrapper_start_device, locker, proxy)
        release_locker = False
    except ServiceException as e:
        logger.info("[[_start_device ERROR] service exception = {}]".format(e.result))
        return JsonResponse(e.result)
    except Exception as e:
        logger.exception('[_start_device ERROR](order={}) error={}'.format(order, e))
        return JsonResponse({'result': 0, 'description': u'系统开小差了，请您重新试试吧', 'payload': {}})
    else:
        return JsonResponse({'result': 1, 'description': u'等待设备启动', 'payload': {
            'outTradeNo': order.orderNo, 'orderType': 'consume', 'adShow': order.owner.ad_show
        }})
    finally:
        logger.debug('release_locker = {}'.format(release_locker))
        release_locker and locker.release()


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"获取服务异常"))
@permission_required(ROLE.myuser)
def getCurrentUse(request): # type: (WSGIRequest) -> JsonResponse

    openId = request.user.openId
    orderId = request.GET.get("orderId")
    pageIndex = int(request.GET.get("pageIndex", 1))
    pageSize = int(request.GET.get("pageSize", 10))

    query = ConsumeRecord.objects.filter(
        openId=openId,
        status__in=[
            ConsumeRecord.Status.RUNNING, ConsumeRecord.Status.END
        ]
    )
    if orderId:
        query = query.filter(id=orderId)

    dataList = list()
    for order in query.skip((pageIndex-1)*pageSize).limit(pageSize):    # type: ConsumeRecord
        device = order.device
        data = {
            'startTime': order.service.deviceStartTime,
            'address': order.address,
            'groupName': order.groupName,
            'devType': order.devTypeName,
            'devTypeCode': order.devTypeCode,
            'logicalCode': order.logicalCode,
            'status': Const.DEV_WORK_STATUS_WORKING,
            'devNo': order.devNo,
            'majorDeviceType': device.majorDeviceType,
            'port': order.port
        }

        # 添加功率曲线
        if 'show_PG_to_user' in device.owner.features and device.support_power_graph and order.port:
            data.update({'showPG': True, 'port': order.port})

        # 添加各种按钮
        data.update(DeviceType.get_services_button(device['devType']['id']))

        # 添加端口的使用详情
        curInfo = device.deviceAdapter.get_port_using_detail(order.port, {})
        data.update(curInfo)

        dataList.append(data)

    return JsonOkResponse(payload={
        'total': pageSize * pageIndex,
        "dataList": dataList
        }
    )


class GetCurrentOrder(View):

    @staticmethod
    def _get_response(orderProcessing, succeeded, desc='', record = None):
        record = record or {}
        return JsonOkResponse(
            payload = {
                'orderProcessing': orderProcessing,
                'succeeded': succeeded,
                'desc': desc,
                'record': record
            }
        )

    def _get_not_yet_response(self):
        return self._get_response(orderProcessing=True, succeeded=None)

    def _get_stop_polling_unknown(self, desc=None):
        desc = desc or u"系统异常"
        return self._get_response(orderProcessing=False, succeeded=False, desc=desc)

    def _get_polling_finished_failed(self, desc, record=None):
        return self._get_response(orderProcessing=False, succeeded=False, desc=desc, record=record)

    def _get_polling_finished_success(self, desc, record):
        return self._get_response(orderProcessing=False, succeeded=True, desc=desc, record=record)

    def get(self, request):
        orderNo = request.GET.get("startKey")
        exp = request.GET.get("exp", 0)
        start_key_status = get_start_key_status(orderNo)

        # 先查找失败的 如果订单状态为失败 直接返回不用访问数据库
        if start_key_status:
            state = start_key_status['state']
            if state in [START_DEVICE_STATUS.FAILURE]:
                return self._get_polling_finished_failed(
                    start_key_status['reason']
                )

            # 其余的状态
            if state not in [START_DEVICE_STATUS.FINISHED]:
                if exp < 2 * 60 * 1000:
                    return self._get_not_yet_response()

        order = get_consume_order(orderNo)
        if not order:
            return self._get_polling_finished_failed(u'订单查询失败')

        if order.status == order.Status.WAIT_CONF:
            return self._get_not_yet_response()

        # 不需要根据状态进行判断了 直接判断设备有无启动即可
        if order.service.deviceStartTime:
            return self._get_polling_finished_success(
                desc=u'您已成功启动设备。如果有疑问，请点击右下角"设备无反应"按钮',
                record={'coins': order.price, 'detailLink': order.detail_link}
            )
        else:
            return self._get_polling_finished_failed(
                desc=order.description,
                record={'coins': order.price, 'detailLink': order.detail_link}
            )


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"获取服务异常"))
@permission_required(ROLE.myuser)
def getUserBalanceCharge(request):
    user = request.user
    pageIndex = int(request.GET.get("pageIndex", 1))
    pageSize = int(request.GET.get("pageSize", 10))

    logs = UserBalanceLog.get_logs(user, pageIndex=pageIndex, pageSize=pageSize)
    dataList = [_.to_dict() for _ in logs.order_by("-id")]
    return JsonOkResponse(payload={
        "total": get_paginate(dataList, pageSize=pageSize, pageIndex=pageIndex),
        "dataList": dataList
    })


@error_tolerate(logger=logger, nil=JsonErrorResponse(description=u"获取服务异常"))
@permission_required(ROLE.myuser, ROLE.dealer)
def getCardBalanceCharge(request):

    cardId = request.GET.get("cardId")
    pageIndex = int(request.GET.get("pageIndex", 1))
    pageSize = int(request.GET.get("pageSize", 10))
    card = Card.objects.filter(id=cardId).first()
    if not card:
        return JsonErrorResponse(description=u"获取服务异常 查询卡失败")

    logs = CardBalanceLog.get_logs(card, pageIndex=pageIndex, pageSize=pageSize)
    dataList = [_.to_dict() for _ in logs.order_by("-id")]
    return JsonOkResponse(payload={
        "total": get_paginate(dataList, pageSize=pageSize, pageIndex=pageIndex),
        "dataList": dataList
    })