wehub-resource-sync
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28 lines
651 B
Python
28 lines
651 B
Python
from typing import Annotated
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from pydantic import BaseModel
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from mcp.server import MCPServer
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from mcp.server.mcpserver import Resolve
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mcp = MCPServer("Bookshop")
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INVENTORY = {"Dune": 7, "Neuromancer": 0}
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class Stock(BaseModel):
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title: str
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copies: int
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async def check_stock(title: str) -> Stock:
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return Stock(title=title, copies=INVENTORY.get(title, 0))
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@mcp.tool()
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async def reserve_book(title: str, stock: Annotated[Stock, Resolve(check_stock)]) -> str:
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"""Reserve a copy of a book."""
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if stock.copies == 0:
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return f"{title!r} is out of stock."
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return f"Reserved {title!r} ({stock.copies - 1} copies left)."
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