文件版本管理-初步优化

backend/app/schemas/distribution.py

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+import enum
+import uuid
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class DistributionTargetType(str, enum.Enum):
+    SITE = "SITE"
+    ROLE = "ROLE"
+    USER = "USER"
+
+
+class DistributionStatus(str, enum.Enum):
+    ACTIVE = "ACTIVE"
+    CLOSED = "CLOSED"
+
+
+class DistributionTarget(BaseModel):
+    target_type: DistributionTargetType
+    target_id: str
+
+
+class DistributionCreate(BaseModel):
+    targets: list[DistributionTarget]
+    due_at: Optional[datetime] = None
+
+
+class DistributionStats(BaseModel):
+    total: int = 0
+    received: int = 0
+    read: int = 0
+    trained: int = 0
+    overdue: int = 0
+
+
+class DistributionRead(BaseModel):
+    id: uuid.UUID
+    document_id: uuid.UUID
+    version_id: uuid.UUID
+    target_type: DistributionTargetType
+    target_id: str
+    status: DistributionStatus
+    due_at: Optional[datetime] = None
+    created_by: Optional[uuid.UUID] = None
+    created_at: datetime
+    stats: DistributionStats = Field(default_factory=DistributionStats)
+
+    model_config = ConfigDict(from_attributes=True)