from django.db import models
from apps.utils.models import CommonBModel
from apps.sam.models import Order
from apps.mtm.models import Material, Process

# Create your models here.

class Mtask(CommonBModel):
    """
    生产任务
    """
    MTASK_CREATED = 10
    MTASK_ASSGINED = 20
    MTASK_WORKING = 30
    MTASK_DONE = 40
    MTASK_STATES = (
        (MTASK_CREATED, '创建中'),
        (MTASK_ASSGINED, '已下达'),
        (MTASK_WORKING, '生产中'),
        (MTASK_DONE, '已完成')
    )
    state = models.PositiveIntegerField('状态', choices=MTASK_STATES, default=MTASK_CREATED, help_text=str(MTASK_STATES))
    number = models.CharField('编号', max_length=50, unique=True)
    order = models.ForeignKey(Order, verbose_name='所属订单', null=True, blank=True, on_delete=models.SET_NULL, related_name='mtask_order')
    process = models.ForeignKey(Process, verbose_name='工序', on_delete=models.CASCADE)
    material = models.ForeignKey(Material, verbose_name='产品', on_delete=models.CASCADE)
    count = models.PositiveIntegerField('任务数', default=1)
    count_real = models.PositiveIntegerField('实际生产数', default=0)
    count_ok = models.PositiveIntegerField('合格数', default=0)
    count_notok = models.PositiveIntegerField('不合格数', default=0)
    start_date = models.DateField('计划开工日期')
    end_date = models.DateField('计划完工日期')
    parent = models.ForeignKey('self', null=True, blank=True, on_delete=models.SET_NULL, verbose_name='父任务')