浅念
1e0467b40f
Minimal read-only FastAPI surface over the mirrored DB: - GET /api/customers with pagination (page/page_size) and optional channel / owner_account_id / department_id filters, ordered by last_chat_time desc (nulls last) then friend_id. - GET /api/health liveness probe. - Pydantic v2 CustomerOut + generic Page[T] envelope. - CORS configured permissively for the local frontend. - Tests override get_session to an in-memory async SQLite session (StaticPool) and drive the app via httpx ASGITransport. Co-Authored-By: Claude <noreply@anthropic.com>
71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
"""GET /api/customers — paginated, filterable customer list.
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Read-only query over the mirrored ``customer`` table. Supports filtering by
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``channel``, ``owner_account_id`` (direct columns) and ``department_id``
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(resolved through ``customer.user_id`` -> ``staff.dept_id``). Results are
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ordered by ``last_chat_time desc`` (nulls last) then ``friend_id`` so the
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most-recently-active contacts surface first.
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"""
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from __future__ import annotations
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from typing import Annotated
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import sqlalchemy as sa
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from fastapi import APIRouter, Depends, Query
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.api.deps import get_session
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from app.api.schemas import CustomerOut, Page
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from app.db.models import Customer, Staff
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router = APIRouter(prefix="/api", tags=["customers"])
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SessionDep = Annotated[AsyncSession, Depends(get_session)]
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PageParam = Annotated[int, Query(ge=1)]
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PageSizeParam = Annotated[int, Query(ge=1, le=100)]
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@router.get("/customers")
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async def list_customers(
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session: SessionDep,
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page: PageParam = 1,
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page_size: PageSizeParam = 20,
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channel: Annotated[str | None, Query()] = None,
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department_id: Annotated[str | None, Query()] = None,
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owner_account_id: Annotated[str | None, Query()] = None,
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) -> Page[CustomerOut]:
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"""List customers with optional filters and pagination."""
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conditions = []
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if channel is not None:
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conditions.append(Customer.channel == channel)
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if owner_account_id is not None:
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conditions.append(Customer.owner_account_id == owner_account_id)
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if department_id is not None:
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# Customer has no dept column; resolve via the owning staff member.
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dept_user_ids = sa.select(Staff.user_id).where(
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Staff.dept_id == department_id
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)
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conditions.append(Customer.user_id.in_(dept_user_ids))
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total_stmt = sa.select(sa.func.count()).select_from(Customer)
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if conditions:
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total_stmt = total_stmt.where(*conditions)
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total = (await session.execute(total_stmt)).scalar_one()
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list_stmt = sa.select(Customer)
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if conditions:
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list_stmt = list_stmt.where(*conditions)
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list_stmt = (
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list_stmt.order_by(
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sa.nullslast(Customer.last_chat_time.desc()),
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Customer.friend_id.asc(),
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)
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.limit(page_size)
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.offset((page - 1) * page_size)
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)
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rows = (await session.execute(list_stmt)).scalars().all()
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items = [CustomerOut.model_validate(row) for row in rows]
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return Page(items=items, total=total, page=page, page_size=page_size)
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