daren/apps/expertproducts/models.py

from django.db import models
from django.db.models import JSONField  # 用于存储动态谈判条款
from django.utils import timezone  # Import timezone for timestamping
from apps.daren_detail.models import CreatorProfile  # 导入CreatorProfile模型
from apps.brands.models import Product  # 导入Product模型


# Create your models here.

class Negotiation(models.Model):
    STATUS_CHOICES = [
        ('brand_review', '品牌回顾'),
        ('price_negotiation', '价格谈判'),
        ('contract_review', '合同确认'),
        ('draft_ready', '准备合同'),
        ('draft_approved', '合同提交'),
        ('accepted', '已接受'),
        ('abandoned', '已放弃'),
    ]
    
    creator = models.ForeignKey(CreatorProfile, on_delete=models.CASCADE)
    product = models.ForeignKey(Product, on_delete=models.CASCADE)
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='price_negotiation')
    current_round = models.IntegerField(default=1)  # 当前谈判轮次
    context = models.JSONField(default=dict)  # 存储谈判上下文（如当前报价）


class Message(models.Model):
    negotiation = models.ForeignKey(Negotiation, on_delete=models.CASCADE)
    role = models.CharField(max_length=10)  # user/assistant
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)
    stage = models.CharField(
        max_length=32,
        choices=Negotiation.STATUS_CHOICES,
        default='brand_review'  # 或你想要的其他默认阶段
    )

# 我们可以在这里添加额外的模型或关系，但现在使用user_management中的现有模型