Add shop

backend/app/models/participant.py

@@ -1,6 +1,6 @@
 from datetime import datetime
 from enum import Enum
-from sqlalchemy import DateTime, ForeignKey, Integer, String, UniqueConstraint
+from sqlalchemy import DateTime, ForeignKey, Integer, String, UniqueConstraint, Boolean, Float
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from app.core.database import Base
@@ -26,6 +26,15 @@ class Participant(Base):
     drop_count: Mapped[int] = mapped_column(Integer, default=0)  # For progressive penalty
     joined_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
 
+    # Shop: coins earned in this marathon
+    coins_earned: Mapped[int] = mapped_column(Integer, default=0)
+
+    # Shop: consumables state
+    skips_used: Mapped[int] = mapped_column(Integer, default=0)
+    active_boost_multiplier: Mapped[float | None] = mapped_column(Float, nullable=True)
+    active_boost_expires_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
+    has_shield: Mapped[bool] = mapped_column(Boolean, default=False)
+
     # Relationships
     user: Mapped["User"] = relationship("User", back_populates="participations")
     marathon: Mapped["Marathon"] = relationship("Marathon", back_populates="participants")
@@ -38,3 +47,16 @@ class Participant(Base):
     @property
     def is_organizer(self) -> bool:
         return self.role == ParticipantRole.ORGANIZER.value
+
+    @property
+    def has_active_boost(self) -> bool:
+        """Check if participant has an active boost"""
+        if self.active_boost_multiplier is None or self.active_boost_expires_at is None:
+            return False
+        return datetime.utcnow() < self.active_boost_expires_at
+
+    def get_boost_multiplier(self) -> float:
+        """Get current boost multiplier (1.0 if no active boost)"""
+        if self.has_active_boost:
+            return self.active_boost_multiplier or 1.0
+        return 1.0