from django.db import models
from flower.common import ModelBase
from basic_info import models as basic_models


class PrintingOrder(ModelBase):
    """PrintingOrder model representing a printing order."""
    customer = models.ForeignKey(
        basic_models.Customer, 
        on_delete=models.PROTECT, 
        related_name='printing_orders', 
        verbose_name='客户',
    )
    fabric = models.CharField(max_length=100, verbose_name='面料')
    width = models.CharField(max_length=100, verbose_name='幅宽')
    is_urgent = models.BooleanField(default=False, verbose_name='紧急')
    area = models.CharField(max_length=100, null=True, blank=True, verbose_name='地区')
    address = models.CharField(max_length=200, null=True, blank=True, verbose_name='地址')
    fabric_source = models.CharField(max_length=100, null=True, blank=True, verbose_name='布料来源')
    is_fabric_received = models.BooleanField(default=False, verbose_name='布料是否已收')
    craft = models.CharField(max_length=100, null=True, blank=True, verbose_name='工艺')
    description = models.TextField(blank=True, null=True, verbose_name='订单描述')
    outgoing_date = models.DateField(null=True, blank=True, verbose_name='出货日期')
    curve = models.CharField(max_length=100, blank=True, null=True, verbose_name='曲线')
    new_curve = models.CharField(max_length=100, blank=True, null=True, verbose_name='新加曲线')
    position = models.TextField(blank=True, null=True, verbose_name='位置')
    printing_warn = models.TextField(blank=True, null=True, verbose_name='打印注意事项')
    rolling_warn = models.TextField(blank=True, null=True, verbose_name='滚筒注意事项')
    production_warn = models.TextField(blank=True, null=True, verbose_name='生产注意事项')
    is_invalid = models.BooleanField(default=False, verbose_name='是否作废')

    def __str__(self):
        return self.human_id

    class Meta:
        verbose_name = '印染订单'
        verbose_name_plural = '印染订单'
        permissions = [
            ('can_invalidate_printingorder', '可以作废印染订单'),
            ('can_activate_printingorder', '可以恢复印染订单'),
        ]

    @property
    def human_id(self) -> str:
        return f"{self.created_at.year}{self.created_at.month:02d}{self.created_at.day:02d}{self.id:06d}"


class PrintingJob(ModelBase):
    """PrintingJob model representing a printing job associated with an order."""
    printing_order = models.ForeignKey(
        PrintingOrder, 
        on_delete=models.CASCADE, 
        related_name='printing_jobs', 
        verbose_name='主订单',
    )
    product = models.ForeignKey(
        basic_models.Product, 
        on_delete=models.PROTECT, 
        related_name='printing_jobs', 
        verbose_name='产品',
    )
    quantity = models.PositiveIntegerField(verbose_name='数量')
    unit = models.CharField(max_length=50, verbose_name='单位')
    size = models.CharField(max_length=100, verbose_name='一段尺寸')
    pieces = models.PositiveIntegerField(verbose_name='件数')
    description = models.TextField(blank=True, verbose_name='备注')

    def __str__(self):
        return self.printing_order.human_id

    class Meta:
        verbose_name = '印染款式明细'
        verbose_name_plural = '印染款式明细'