from django.db import models
from Info.models import User, Company

# Create your models here.


class Vendor(models.Model):
    id = models.AutoField(primary_key=True)
    code = models.TextField()
    name = models.TextField()
    contact = models.TextField()
    phone = models.TextField()
    email = models.TextField(blank=True, null=True)
    address = models.TextField()
    comment = models.TextField(blank=True, null=True)
    status = models.TextField(default='sign-off')     # 状态 sign-off,normal,EOL
    creator = models.ForeignKey(
        to=User, on_delete=models.DO_NOTHING, related_name="create_of_vendor", null=True, blank=True)        # 创建人
    owner = models.ForeignKey(
        to=User, on_delete=models.DO_NOTHING, related_name="owner_of_vendor", null=True, blank=True)        # 现在的管理者
    company = models.ForeignKey(to=Company, on_delete=models.CASCADE, null=True)       # 料号归属公司
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class Part(models.Model):
    id = models.AutoField(primary_key=True)
    part_number = models.TextField()
    description = models.TextField()
    comment = models.TextField(blank=True, null=True)
    version = models.IntegerField(default=0)
    # 料号的状态，draft,review,production,EOL
    life_cycle = models.TextField(default='draft')      
    # draft sign-off released expired EOL 表示料号+版本处在生命周期。
    # draft sign-off 只能有一个，表示BOM在签核中，
    # released只能有一个。
    # expired可以有多一个，表示旧的版本。
    # 如果EOL的话，全部版本都要EOL
    sub_parts = models.TextField(blank=True, null=True)      # 将一个包含下一阶料号ID的list转成string
    creator = models.ForeignKey(
        to=User, on_delete=models.DO_NOTHING, related_name="creator_of_part", null=True, blank=True)        # 创建人
    owner = models.ForeignKey(
        to=User, on_delete=models.DO_NOTHING, related_name="owner_of_part", null=True, blank=True)        # 现在的管理者
    company = models.ForeignKey(
        to=Company, on_delete=models.CASCADE, null=True)       # 料号归属公司
    source_type = models.TextField(null=True, blank=True, default='build')     # 原料来源，采购，生产
    vendor = models.ForeignKey(
        to=Vendor, on_delete=models.CASCADE, blank=True, null=True)       # 料号采购公司
    vendor_part_number = models.TextField(blank=True, null=True)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class PartAttachment(models.Model):
    id = models.AutoField(primary_key=True)
    part = models.ForeignKey(to=Part, on_delete=models.CASCADE, blank=True, null=True)
    storage_type = models.TextField(default="local")    # 存储类型 local/cloud 默认为local
    url = models.TextField()
    display_name = models.TextField()
    creator = models.ForeignKey(to=User, on_delete=models.DO_NOTHING, null=True, blank=True)        # 创建人
    company = models.ForeignKey( to=Company, on_delete=models.CASCADE, null=True)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class VendorAttachment(models.Model):
    id = models.AutoField(primary_key=True)
    vendor = models.ForeignKey(to=Vendor, on_delete=models.CASCADE, blank=True, null=True)
    storage_type = models.TextField(default="local")    # 存储类型 local/cloud 默认为local
    url = models.TextField()
    display_name = models.TextField()
    creator = models.ForeignKey(to=User, on_delete=models.DO_NOTHING, null=True, blank=True)        # 创建人
    company = models.ForeignKey( to=Company, on_delete=models.CASCADE, null=True)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class BOMSetting(models.Model):
    id = models.AutoField(primary_key=True)
    company = models.ForeignKey(to=Company, on_delete=models.CASCADE, null=True)
    auto_pn = models.BooleanField(default=False)
    auto_ver = models.BooleanField(default=True)
    auto_supplier_code = models.BooleanField(default=True)
    part_ecn_default_approvers = models.TextField(blank=True, null=True)
    vendor_ecn_default_approvers = models.TextField(blank=True, null=True)
    attachment_maxsize = models.IntegerField(default=1000)      # 默认公司保存附件大小（单位M)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class BOM(models.Model):
    id = models.AutoField(primary_key=True)
    parent_part = models.ForeignKey(to=Part, on_delete=models.CASCADE, related_name="parent_part")
    # child_part = models.ForeignKey(to=Part, on_delete=models.CASCADE, related_name="child_part")
    child_pn = models.TextField()       # child PN 只记录子料号，不记录版本等其他信息。所以不适用foreign key
    qty = models.DecimalField(max_digits=9, decimal_places=4)
    creator = models.ForeignKey(to=User, on_delete=models.DO_NOTHING, null=True, blank=True)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class ECN(models.Model):
    id = models.AutoField(primary_key=True)
    number = models.TextField()
    creator = models.ForeignKey(to=User, on_delete=models.DO_NOTHING, related_name="create_of_ecn", null=True, blank=True)        # 创建人
    company = models.ForeignKey(to=Company, on_delete=models.CASCADE, null=True)       # ECN归属公司
    status = models.TextField(default='签核中')     # 状态，默认签核中，d，拒绝，撤回sign-off,release,reject,widthdraw。不能删除，否则将导致ECN number出错
    comment = models.TextField(blank=True, null=True)
    category = models.TextField()       # 类型 part, vendor
    target_part = models.ForeignKey(to=Part, on_delete=models.CASCADE, null=True)
    target_vendor = models.ForeignKey(to=Vendor, on_delete=models.CASCADE, null=True)
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)


class EcnSignOff(models.Model):
    id = models.AutoField(primary_key=True)
    company = models.ForeignKey(to=Company, on_delete=models.CASCADE, null=True)       # ECN sign off归属公司
    ecn = models.ForeignKey(to=ECN, on_delete=models.CASCADE)
    owner = models.ForeignKey(to=User, on_delete=models.DO_NOTHING, related_name="ecn_sign_off_owner", null=True, blank=True)        # 签核的人
    comment = models.TextField(blank=True, null=True)
    status = models.TextField(default='签核中')     # 状态，默认签核中,批准,拒绝
    create_datetime = models.DateTimeField(auto_now_add=True)
    last_update_datetime = models.DateTimeField(auto_now=True)