# coding=utf-8
from django.db import models
from django.conf import settings
from django.db.models import Q
from utils.exceptions import CustomError
from django.utils import timezone
from apps.base import Formater
from apps.WeChatResponse import WeChatResponse
from apps.Alipay import Alipay

class Tenant(models.Model):

    company_no = models.CharField(max_length=10, verbose_name=u'单位编号', blank=True, null=True)
    company_name = models.CharField(max_length=200, verbose_name=u'单位名称', blank=True, null=True)
    organ_code = models.CharField(max_length=200, verbose_name=u'组织代码', blank=True, null=True)
    # images = models.ForeignKey('Upload', verbose_name='营业执照图片',on_delete=models.PROTECT, blank=True)
    name = models.CharField(max_length=20, verbose_name=u'联系人名称')
    tel = models.CharField(max_length=20, verbose_name=u'联系人电话')
    address = models.CharField(max_length=20, verbose_name=u'地址', blank=True, null=True)
    create_time = models.DateTimeField(verbose_name=u'申请时间', auto_now_add=True, editable=False)
    end_date = models.DateField(verbose_name=u'到期时间', editable=False, blank=True, null=True)
    status = models.PositiveSmallIntegerField(choices=settings.CHECK_STATE_CHOICES, verbose_name=u'审核状态',
                                              default=settings.DEFAULT)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, verbose_name=u"申请人", on_delete=models.PROTECT,
                             editable=False, null=True)
    reject_reason = models.CharField(max_length=200, verbose_name=u'拒绝原因', blank=True, null=True)
    delete = models.BooleanField(verbose_name=u'删除', default=False, editable=False)

    class Meta:
        db_table = 'tenant'
        ordering = ['-id']
        verbose_name = '租户'
        default_permissions = ()

    def get_no(self):
        now = int(timezone.now().strftime('%H%M%S')) * 1.3
        no = '{0}{1}'.format(self.id, now)
        return no

    @staticmethod
    def is_exist(company_name, exclude_id=None):
        rows = Tenant.objects.filter(delete=False, company_name=company_name)
        if exclude_id:
            rows = rows.filter(~Q(id=exclude_id))
        return rows.count()

    @staticmethod
    def getById(id):
        try:
            id = int(id)
        except:
            raise CustomError(u'无效的租户id！')
        tenant = Tenant.objects.filter(id=id, delete=False).first()
        if not tenant:
            raise CustomError(u'未找到相应的租户信息！')
        return tenant


class RenewLog(models.Model):

    tenant = models.ForeignKey(Tenant, verbose_name=u"租户", on_delete=models.PROTECT, editable=False, )
    amount = models.FloatField(verbose_name='金额')
    create_time = models.DateTimeField(verbose_name=u'续费时间', auto_now_add=True, editable=False)
    end_date = models.DateField(verbose_name=u'到期时间', editable=False, blank=True, null=True)

    class Meta:
        db_table = 'tenant_renew_log'
        ordering = ['-id']
        verbose_name = '租户续费记录'

class Pay(models.Model):
    WAIT = 0
    PAY = 1
    CONFIRM = 2
    UNDO = 4
    STATUS_CHOICES = (
        (WAIT, u'待付款'),
        (PAY, u'已付款'),
        (CONFIRM, u'已确认付款'),
        (UNDO, u'已取消'),
    )
    WECHAT = 1
    ALIPAY = 2
    PAY_CHANNEL_CHOICES = (
        (WECHAT, u'微信'),
        (ALIPAY, u'支付宝'),
    )
    pay_no = models.CharField(max_length=25, verbose_name='支付单号',unique=True, null=True)
    status = models.PositiveSmallIntegerField(choices=STATUS_CHOICES, verbose_name='状态', default=WAIT)
    pay_channel = models.PositiveSmallIntegerField(choices=PAY_CHANNEL_CHOICES, verbose_name='支付通道')
    precreate_amount = models.BigIntegerField(verbose_name=u"预支付金额")
    create_time = models.DateTimeField(verbose_name=u"创建时间", default=timezone.now)
    qrcode = models.CharField(max_length=512, verbose_name=u"付款码", null=True)
    amount = models.BigIntegerField(verbose_name=u"支付金额", null=True)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, verbose_name=u'下单人',related_name='pay_user', on_delete=models.PROTECT)
    tenant = models.ForeignKey(Tenant, verbose_name=u'商户',related_name='pay_tenant', on_delete=models.PROTECT)

    class Meta:
        db_table = "pay"
        verbose_name = u"支付信息"
        ordering = ('-id',)
        default_permissions = ()

    def payClosed(self):
        if self.status != Pay.WAIT:
            return

        self.status = Pay.UNDO
        self.save()

    def paySuccess(self, pay_amount):
        if self.status != Pay.WAIT:
            return

        self.status = Pay.PAY
        self.amount = Formater.formatAmount(pay_amount)
        self.save()

    # 支付宝回调，付款
    def payConfirm(self, no):
        if self.status != Pay.PAY:
            return
        pay_amount = 0
        if self.pay_channel == Pay.ALIPAY:
            pay_amount = Alipay.queryUnifiedOrder(no)
            pay_amount = Formater.formatAmount(pay_amount)
        elif self.pay_channel == Pay.WECHAT:
            pay_amount = WeChatResponse().orderquery(no)
            pay_amount = Formater.formatPrice(pay_amount)

        self.status = Pay.CONFIRM
        self.amount = pay_amount
        self.save()

    @staticmethod
    def getByNo(pay_no):
        instance = Pay.objects.filter(pay_no=pay_no).first()
        if not instance:
            raise CustomError(u'未找到相应的支付单号！')
        return instance

    # 微信支付
    @staticmethod
    def wechatPay(user, tenant_id, amount):
        item = Pay._precreatePay(
            user,
            tenant_id,
            Pay.WECHAT,
            amount
        )
        return item

    # 支付宝支付
    @staticmethod
    def alipayPay(user, tenant_id, amount):
        item = Pay._precreatePay(
            user,
            tenant_id,
            Pay.ALIPAY,
            amount
        )
        return item

    @staticmethod
    def _precreatePay(user, tenant_id, pay_channel, amount):

        pay_no = '{0}{1}'.format(tenant_id, timezone.now().strftime('%y%m%d%H%M%S'))
        pay = Pay.objects.create(
            tenant_id=tenant_id,
            pay_no=pay_no,
            pay_channel=pay_channel,
            status=Pay.WAIT,
            precreate_amount=amount,
            user=user,
        )
        qrcode = ''
        if pay_channel == Pay.WECHAT:
            qrcode = WeChatResponse().unifiedOrder(pay.pay_no, round(float(Formater.formatAmountShow(amount)), 2))
            pass
        elif pay_channel == Pay.ALIPAY:
            qrcode = Alipay.payUnifiedOrder(pay.pay_no, round(float(Formater.formatAmountShow(amount)), 2))

        pay.qrcode = qrcode
        pay.save()
        return pay