from tortoise import fields, models
from tortoise.indexes import Index
from tortoise.contrib.pydantic import pydantic_model_creator, pydantic_queryset_creator
from tortoise.signals import post_save
from typing import Type
from helper.tools import genRandomStr

class Hole(models.Model):
    id = fields.UUIDField(pk=True)
    number = fields.IntField(default=0, description='空位编号')

    traynum = fields.CharField(max_length=255, null=True, description='标品托盘编号')
    typetask = fields.IntField(default=1, description='1: 标准品A, 3: 标准品B, 5: 标准品C, 7: 标准品D, 9:非标准品')

    code = fields.CharField(null=True, max_length=255, description='二维码编号')
    name = fields.CharField(null=True, max_length=255, description='试剂名称')

    height = fields.IntField(default=0, description='瓶高')
    bottle = fields.IntField(default=0, description='瓶身直径')
    cap = fields.IntField(default=0, description='瓶盖直径')

    orderid = fields.CharField(max_length=255, null=True, description='托盘内孔位号对应的订单号列表')

    #停靠点 -> 层坐标 (最底下为第一层) -> 试剂在托盘内的编号
    #where to return
    coordinates = fields.CharField(null=True, max_length=255, description='试剂坐标')
    coordinatessrc = fields.CharField(null=True, max_length=255, description='原试剂坐标')

    created_at = fields.DatetimeField(auto_now_add=True)
    updated_at = fields.DatetimeField(auto_now=True)
    is_valid = fields.BooleanField(default=True, description='是否取消')
    is_active = fields.BooleanField(default=True, description='是否删除')


    class PydanticMeta:
        # Let's exclude the created timestamp
        exclude = ("created_at",)

    class Meta:
        table = 'Holes'
        table_description = '暂存货架或接驳机空位编号表'

        ordering = ["number"]

        indexes = [
            Index(fields={"traynum"}, name="traynumidx"),
            Index(fields={"number"}, name="numberidx"),
            Index(fields={"orderid"}, name="orderididx"),
            Index(fields={"is_valid"}, name="is_valididx"),
            Index(fields={"is_active"}, name="is_activeidx"),
        ]

    def __str__(self):
        return f'Hole(id={self.id} number={self.number},  orderid={self.orderid}, created_at={self.created_at})'

    def as_json(self):
        return dict(id="{}".format(self.id), number=self.number, orderid=self.orderid, created_at="{}".format(self.created_at))
    

Hole_Pydantic = pydantic_model_creator(Hole, name="Hole")
Hole_Pydantic_List = pydantic_queryset_creator(Hole)


class Vacancy(models.Model):
    id = fields.UUIDField(pk=True)
    number = fields.CharField(max_length=255, null=True, description='空位编号')
    traynum = fields.CharField(max_length=255, null=True, description='非标品托盘编号')

    orderids = fields.JSONField(null=True, description='托盘编号对应的订单号列表')
    coordinatessrc = fields.CharField(null=True, max_length=255, description='原试剂坐标')

    typetask = fields.IntField(default=1, description='1: 标准品A, 3: 标准品B, 5: 标准品C, 7: 标准品D, 9:非标准品')

    holes = fields.ManyToManyField('models.Hole', related_name='warehouseholes')

    memo = fields.JSONField(null=True, description='备忘录')

    is_shelf = fields.BooleanField(default=False, description='是货架库存')
    is_connect = fields.BooleanField(default=False, description='是接驳区库存')
    is_empty = fields.BooleanField(default=False, description='是空位')

    created_at = fields.DatetimeField(auto_now_add=True)
    updated_at = fields.DatetimeField(auto_now=True)
    is_valid = fields.BooleanField(default=True, description='是否取消')
    is_active = fields.BooleanField(default=True, description='是否删除')


    class PydanticMeta:
        # Let's exclude the created timestamp
        exclude = ("created_at",)

    class Meta:
        table = 'Vacancys'
        table_description = '暂存货架或接驳机空位编号表'

        ordering = ["number", "created_at"]

        indexes = [
            Index(fields={"number"}, name="numberidx"),
            Index(fields={"traynum"}, name="traynumidx"),
            Index(fields={"is_shelf"}, name="is_shelfidx"),
            Index(fields={"is_connect"}, name="is_connectidx"),
            Index(fields={"is_empty"}, name="is_emptyidx"),
            Index(fields={"is_valid"}, name="is_valididx"),
            Index(fields={"is_active"}, name="is_activeidx"),
        ]

    def __str__(self):
        return f'Vacancy(id={self.id} number={self.number},  traynum={self.traynum}, created_at={self.created_at})'

    def as_json(self):
        return dict(id="{}".format(self.id), number=self.number, traynum=self.traynum, created_at="{}".format(self.created_at))
    

Vacancy_Pydantic = pydantic_model_creator(Vacancy, name="Vacancy")
Vacancy_Pydantic_List = pydantic_queryset_creator(Vacancy)


class Connection(models.Model):
    id = fields.UUIDField(pk=True)
    num = fields.CharField(null=True, max_length=255, description='短编号')
    name = fields.CharField(null=True, max_length=255, description='接驳台编号')
    vacancies = fields.ManyToManyField('models.Vacancy', related_name='connectionvacancies')

    memo = fields.JSONField(null=True, description='备忘录')

    created_at = fields.DatetimeField(auto_now_add=True)
    updated_at = fields.DatetimeField(auto_now=True)
    is_valid = fields.BooleanField(default=True, description='是否取消')
    is_active = fields.BooleanField(default=True, description='是否删除')


    class PydanticMeta:
        # Let's exclude the created timestamp
        exclude = ("created_at",)
        allow_cycles = True
        max_recursion = 4

    class Meta:
        table = 'Connections'
        table_description = '暂存货架库存表'

        ordering = ["name", "created_at"]

        indexes = [
            Index(fields={"name"}, name="nameidx"),
            Index(fields={"num"}, name="numidx"),
            Index(fields={"is_valid"}, name="is_valididx"),
            Index(fields={"is_active"}, name="is_activeidx"),
        ]

    def __str__(self):
        return f'Connection(id={self.id}, num={self.num}, name={self.name}, created_at={self.created_at})'

    def as_json(self):
        return dict(id="{}".format(self.id), num=self.num, name=self.name, created_at="{}".format(self.created_at))

Connection_Pydantic = pydantic_model_creator(Connection, name="Connection")

@post_save(Connection)
async def connection_post_save(
    sender: "Type[Connection]",
    instance: Connection,
    created,
    using_db,
    update_fields,
) -> None:

    if not instance.num or "null" == instance.num:
        # print("instance.num: ", instance.num)
        # check duplicated num
        async def checkNum():
            num = genRandomStr(4)
            # print("new num: ", num)
            if await Connection.filter(num = num).exists():
                # print("num exist, ", num)
                checkNum()
            else:
                # print("num not exist, ", num)
                instance.num = num
                await instance.save()

        await checkNum()