Multitenant implementation with custom Domain, theme per vendor

models/database/vendor_theme.py

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+# models/database/vendor_theme.py
+"""
+Vendor Theme Configuration Model
+Allows each vendor to customize their shop's appearance
+"""
+from datetime import datetime, timezone
+from sqlalchemy import Column, Integer, String, Boolean, Text, JSON, DateTime, ForeignKey
+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:
+    - Custom colors (primary, secondary, accent)
+    - Custom fonts
+    - Custom logo and favicon
+    - Custom CSS overrides
+    - Layout preferences
+    """
+    __tablename__ = "vendor_themes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    vendor_id = Column(Integer, ForeignKey("vendors.id", ondelete="CASCADE"), nullable=False, unique=True)
+
+    # Basic Theme Settings
+    theme_name = Column(String(100), default="default")  # e.g., "modern", "classic", "minimal"
+    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
+    vendor = relationship("Vendor", back_populates="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,
+        }