from django.db import models
import uuid


class CardTemplate(models.Model):
    """扑克牌模板模型（经典/现代/卡通/复古 4 套预设）"""
    id = models.CharField(max_length=50, primary_key=True)  # 'classic', 'modern', etc.
    name = models.CharField(max_length=100)
    description = models.TextField()
    preview_image = models.ImageField(upload_to='templates/previews/', null=True)

    # 默认配色方案
    color_spade = models.CharField(max_length=20, default='#000000')
    color_heart = models.CharField(max_length=20, default='#FF0000')
    color_club = models.CharField(max_length=20, default='#000000')
    color_diamond = models.CharField(max_length=20, default='#FF0000')
    color_background = models.CharField(max_length=20, default='#FFFFFF')

    # 模板绑定的预设主题（指向 LibraryAsset.theme_id）
    # 例如 'classical' 模板 → 使用 LibraryAsset.theme_id='classical' 的所有素材
    theme_id = models.CharField(max_length=50, blank=True, default='classical')

    # 模板级 design 覆盖：background_color / border_color / pip_size_ratio 等
    # 不填则走全局默认
    design_override = models.JSONField(default=dict)

    # 默认素材路径（JSON，保留字段兼容老逻辑）
    default_assets = models.JSONField(default=dict)

    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.name

    class Meta:
        ordering = ['name']


class SuitSymbol(models.Model):
    """花色图案模板"""
    template = models.ForeignKey(CardTemplate, on_delete=models.CASCADE, related_name='suit_symbols')
    suit_name = models.CharField(max_length=20)  # 'spade', 'heart', 'club', 'diamond'
    svg_path = models.TextField()  # SVG路径数据
    color = models.CharField(max_length=20)

    def __str__(self):
        return f"{self.template.name} - {self.suit_name}"