from django.db import models
from apps.utils.models import CommonBDModel, BaseModel

class Mgroup(CommonBDModel):
    """测点集
    """
    name = models.CharField('名称', max_length=50)


class Team(CommonBDModel):
    """班组
    """
    name = models.CharField('名称', max_length=50)
    members = models.ManyToManyField('system.user', verbose_name='关联成员', through='enm.teammember')


class TeamMember(BaseModel):
    """班组成员
    """
    team = models.ForeignKey('enm.team', verbose_name='关联班组', on_delete=models.CASCADE)
    is_main = models.BooleanField('是否班长', default=False)
    member = models.ForeignKey('system.user', verbose_name='关联用户', on_delete=models.CASCADE)


class Mpoint(CommonBDModel):
    """测点
    """
    name = models.CharField('测点名称', max_length=50)
    code = models.CharField('测点编号', max_length=50)
    unit = models.CharField('单位', max_length=50)

    ep_monitored = models.ForeignKey('em.equipment', verbose_name='监测哪个设备', related_name='mp_ep_monitored', on_delete=models.SET_NULL, null=True, blank=True)
    ep_belong = models.ForeignKey('em.equipment', verbose_name='属于哪个设备', related_name='mp_ep_belong', on_delete=models.SET_NULL, null=True, blank=True)
    mgroup = models.ForeignKey('enm.mgroup', verbose_name='所在集合', on_delete=models.SET_NULL, null=True, blank=True)


class Mrecord(BaseModel):
    """测点原始记录
    """
    mpoint = models.ForeignKey(Mpoint, verbose_name='关联测点', on_delete=models.SET_NULL, null=True, blank=True)
    tag_id = models.BigIntegerField('记录ID')
    tag_code = models.CharField('测点编号', max_length=50)
    tag_update = models.DateTimeField('更新时间')
    tag_val = models.FloatField('当前值')


class Drecord(BaseModel):
    """值班记录
    """
    team = models.ForeignKey(Team, verbose_name='班组', on_delete=models.CASCADE)