first commit

backend/app/schemas/document.py

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+from datetime import datetime
+from typing import Any, Literal
+
+from pydantic import BaseModel, Field
+
+CreateType = Literal["shed", "silo", "sketch", "stead"]
+MemberRole = Literal["editor", "viewer"]
+Visibility = Literal["private", "members"]
+
+
+class DocumentMember(BaseModel):
+    user_id: int
+    role: MemberRole
+    name: str = ""
+    email: str = ""
+
+
+class DocumentCreate(BaseModel):
+    type: CreateType
+    title: str
+    content: dict[str, Any] = Field(default_factory=dict)
+    template_id: str | None = None
+    stead_id: str | None = None
+
+
+class DocumentUpdate(BaseModel):
+    title: str | None = None
+    content: dict[str, Any] | None = None
+    starred: bool | None = None
+
+
+class ShareRequest(BaseModel):
+    email_or_username: str
+    role: MemberRole = "editor"
+
+
+class DocumentResponse(BaseModel):
+    id: str
+    type: CreateType
+    title: str
+    template_id: str | None = None
+    stead_id: str | None = None
+    content: dict[str, Any]
+    created_by: str
+    created_at: datetime
+    updated_at: datetime
+    starred: bool = False
+    last_visited_at: datetime | None = None
+    owner_id: int | None = None
+    visibility: Visibility = "private"
+    members: list[DocumentMember] = Field(default_factory=list)