initial

backend/app/schemas/challenge.py

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+from datetime import datetime
+from pydantic import BaseModel, Field
+
+from app.models.challenge import ChallengeType, Difficulty, ProofType
+from app.schemas.game import GameShort
+
+
+class ChallengeBase(BaseModel):
+    title: str = Field(..., min_length=1, max_length=100)
+    description: str = Field(..., min_length=1)
+    type: ChallengeType
+    difficulty: Difficulty
+    points: int = Field(..., ge=1, le=500)
+    estimated_time: int | None = Field(None, ge=1)  # minutes
+    proof_type: ProofType
+    proof_hint: str | None = None
+
+
+class ChallengeCreate(ChallengeBase):
+    pass
+
+
+class ChallengeUpdate(BaseModel):
+    title: str | None = Field(None, min_length=1, max_length=100)
+    description: str | None = None
+    type: ChallengeType | None = None
+    difficulty: Difficulty | None = None
+    points: int | None = Field(None, ge=1, le=500)
+    estimated_time: int | None = None
+    proof_type: ProofType | None = None
+    proof_hint: str | None = None
+
+
+class ChallengeResponse(ChallengeBase):
+    id: int
+    game: GameShort
+    is_generated: bool
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class ChallengeGenerated(BaseModel):
+    """Schema for GPT-generated challenges"""
+    title: str
+    description: str
+    type: str
+    difficulty: str
+    points: int
+    estimated_time: int | None = None
+    proof_type: str
+    proof_hint: str | None = None