first commit

backend/app/models.py

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+from datetime import datetime
+from enum import StrEnum
+from uuid import UUID
+
+from pydantic import BaseModel, Field
+
+
+class SegmentType(StrEnum):
+    MARKDOWN = "markdown"
+    PDF = "pdf"
+    VIDEO = "video"
+    AUDIO = "audio"
+    IFRAME = "iframe"
+    GALLERY = "gallery"
+    LINK = "link"
+
+
+class Segment(BaseModel):
+    id: UUID
+    type: SegmentType
+    sort_order: int
+    title: str
+    content: str = ""
+    metadata: dict[str, object] = Field(default_factory=dict)
+    created_at: datetime
+    updated_at: datetime
+
+
+class SegmentCreateRequest(BaseModel):
+    type: SegmentType
+    title: str
+    content: str = ""
+    metadata: dict[str, object] = Field(default_factory=dict)
+
+
+class SegmentUpdateRequest(BaseModel):
+    title: str | None = None
+    content: str | None = None
+    metadata: dict[str, object] | None = None
+
+
+class ReorderRequest(BaseModel):
+    segment_ids: list[UUID]
+
+
+class SiteUpdateRequest(BaseModel):
+    title: str
+
+
+class SegmentResponse(BaseModel):
+    id: UUID
+    type: SegmentType
+    sort_order: int
+    title: str
+    content: str
+    metadata: dict[str, object]
+    created_at: datetime
+    updated_at: datetime
+
+
+class SiteResponse(BaseModel):
+    title: str