from django.db import models
from apps.utils.models import CommonADModel
from apps.mtm.models import Material, Mgroup

# Create your models here.


class Mtask(CommonADModel):
    """
    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, '已结束')
    )
    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)
    mgroup = models.ForeignKey(
        Mgroup, verbose_name='工段', on_delete=models.CASCADE)
    material_before = models.ForeignKey(
        Material, verbose_name='领用物', on_delete=models.CASCADE, related_name='mtask_material_before', null=True, blank=True)
    material = models.ForeignKey(
        Material, verbose_name='产物', on_delete=models.CASCADE, related_name='mtask_material')
    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')