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services/tenant/app/models/__init__.py

@@ -13,6 +13,7 @@ AuditLog = create_audit_log_model(Base)
 
 # Import all models to register them with the Base metadata
 from .tenants import Tenant, TenantMember, Subscription
+from .coupon import CouponModel, CouponRedemptionModel
 
 # List all models for easier access
 __all__ = [
@@ -20,4 +21,6 @@ __all__ = [
     "TenantMember",
     "Subscription",
     "AuditLog",
+    "CouponModel",
+    "CouponRedemptionModel",
 ]

services/tenant/app/models/coupon.py

@@ -0,0 +1,64 @@
+"""
+SQLAlchemy models for coupon system
+"""
+from datetime import datetime
+from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey, JSON, Index
+from sqlalchemy.orm import relationship
+from sqlalchemy.dialects.postgresql import UUID
+import uuid
+
+from shared.database import Base
+
+
+class CouponModel(Base):
+    """Coupon configuration table"""
+    __tablename__ = "coupons"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    code = Column(String(50), unique=True, nullable=False, index=True)
+    discount_type = Column(String(20), nullable=False)  # trial_extension, percentage, fixed_amount
+    discount_value = Column(Integer, nullable=False)  # Days/percentage/cents depending on type
+    max_redemptions = Column(Integer, nullable=True)  # None = unlimited
+    current_redemptions = Column(Integer, nullable=False, default=0)
+    valid_from = Column(DateTime(timezone=True), nullable=False)
+    valid_until = Column(DateTime(timezone=True), nullable=True)  # None = no expiry
+    active = Column(Boolean, nullable=False, default=True)
+    created_at = Column(DateTime(timezone=True), nullable=False, default=datetime.utcnow)
+    extra_data = Column(JSON, nullable=True)  # Renamed from metadata to avoid SQLAlchemy reserved name
+
+    # Relationships
+    redemptions = relationship("CouponRedemptionModel", back_populates="coupon")
+
+    # Indexes for performance
+    __table_args__ = (
+        Index('idx_coupon_code_active', 'code', 'active'),
+        Index('idx_coupon_valid_dates', 'valid_from', 'valid_until'),
+    )
+
+    def __repr__(self):
+        return f"<Coupon(code='{self.code}', type='{self.discount_type}', value={self.discount_value})>"
+
+
+class CouponRedemptionModel(Base):
+    """Coupon redemption history table"""
+    __tablename__ = "coupon_redemptions"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    tenant_id = Column(String(255), nullable=False, index=True)
+    coupon_code = Column(String(50), ForeignKey('coupons.code'), nullable=False)
+    redeemed_at = Column(DateTime(timezone=True), nullable=False, default=datetime.utcnow)
+    discount_applied = Column(JSON, nullable=False)  # Details of discount applied
+    extra_data = Column(JSON, nullable=True)  # Renamed from metadata to avoid SQLAlchemy reserved name
+
+    # Relationships
+    coupon = relationship("CouponModel", back_populates="redemptions")
+
+    # Constraints
+    __table_args__ = (
+        Index('idx_redemption_tenant', 'tenant_id'),
+        Index('idx_redemption_coupon', 'coupon_code'),
+        Index('idx_redemption_tenant_coupon', 'tenant_id', 'coupon_code'),  # Prevent duplicate redemptions
+    )
+
+    def __repr__(self):
+        return f"<CouponRedemption(tenant_id='{self.tenant_id}', code='{self.coupon_code}')>"