orion/models/database/vendor_theme.py

# models/database/vendor_theme.py
"""
Vendor Theme Configuration Model
Allows each vendor to customize their shop's appearance
"""

from sqlalchemy import JSON, Boolean, Column, ForeignKey, Integer, String, Text
from sqlalchemy.orm import relationship

from app.core.database import Base
from models.database.base import TimestampMixin


class VendorTheme(Base, TimestampMixin):
    """
    Stores theme configuration for each vendor's shop.

    Each vendor can have ONE active theme:
    - Custom colors (primary, secondary, accent)
    - Custom fonts
    - Custom logo and favicon
    - Custom CSS overrides
    - Layout preferences

    Theme presets available: default, modern, classic, minimal, vibrant
    """

    __tablename__ = "vendor_themes"

    id = Column(Integer, primary_key=True, index=True)
    vendor_id = Column(
        Integer,
        ForeignKey("vendors.id", ondelete="CASCADE"),
        nullable=False,
        unique=True,  # ONE vendor = ONE theme
    )

    # Basic Theme Settings
    theme_name = Column(
        String(100), default="default"
    )  # default, modern, classic, minimal, vibrant
    is_active = Column(Boolean, default=True)

    # Color Scheme (JSON for flexibility)
    colors = Column(
        JSON,
        default={
            "primary": "#6366f1",  # Indigo
            "secondary": "#8b5cf6",  # Purple
            "accent": "#ec4899",  # Pink
            "background": "#ffffff",  # White
            "text": "#1f2937",  # Gray-800
            "border": "#e5e7eb",  # Gray-200
        },
    )

    # Typography
    font_family_heading = Column(String(100), default="Inter, sans-serif")
    font_family_body = Column(String(100), default="Inter, sans-serif")

    # Branding Assets
    logo_url = Column(String(500), nullable=True)  # Path to vendor logo
    logo_dark_url = Column(String(500), nullable=True)  # Dark mode logo
    favicon_url = Column(String(500), nullable=True)  # Favicon
    banner_url = Column(String(500), nullable=True)  # Homepage banner

    # Layout Preferences
    layout_style = Column(String(50), default="grid")  # grid, list, masonry
    header_style = Column(String(50), default="fixed")  # fixed, static, transparent
    product_card_style = Column(
        String(50), default="modern"
    )  # modern, classic, minimal

    # Custom CSS (for advanced customization)
    custom_css = Column(Text, nullable=True)

    # Social Media Links
    social_links = Column(JSON, default={})  # {facebook: "url", instagram: "url", etc.}

    # SEO & Meta
    meta_title_template = Column(
        String(200), nullable=True
    )  # e.g., "{product_name} - {shop_name}"
    meta_description = Column(Text, nullable=True)

    # Relationships - FIXED: back_populates must match the relationship name in Vendor model
    vendor = relationship("Vendor", back_populates="vendor_theme")

    def __repr__(self):
        return (
            f"<VendorTheme(vendor_id={self.vendor_id}, theme_name='{self.theme_name}')>"
        )

    @property
    def primary_color(self):
        """Get primary color from JSON"""
        return self.colors.get("primary", "#6366f1")

    @property
    def css_variables(self):
        """Generate CSS custom properties from theme config"""
        return {
            "--color-primary": self.colors.get("primary", "#6366f1"),
            "--color-secondary": self.colors.get("secondary", "#8b5cf6"),
            "--color-accent": self.colors.get("accent", "#ec4899"),
            "--color-background": self.colors.get("background", "#ffffff"),
            "--color-text": self.colors.get("text", "#1f2937"),
            "--color-border": self.colors.get("border", "#e5e7eb"),
            "--font-heading": self.font_family_heading,
            "--font-body": self.font_family_body,
        }

    def to_dict(self):
        """Convert theme to dictionary for template rendering"""
        return {
            "theme_name": self.theme_name,
            "colors": self.colors,
            "fonts": {
                "heading": self.font_family_heading,
                "body": self.font_family_body,
            },
            "branding": {
                "logo": self.logo_url,
                "logo_dark": self.logo_dark_url,
                "favicon": self.favicon_url,
                "banner": self.banner_url,
            },
            "layout": {
                "style": self.layout_style,
                "header": self.header_style,
                "product_card": self.product_card_style,
            },
            "social_links": self.social_links,
            "custom_css": self.custom_css,
            "css_variables": self.css_variables,
        }