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app/services/admin_desktop_config.py

@@ -0,0 +1,88 @@
+from sqlalchemy import func, select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.desktopConfig import DesktopConfig
+from app.schemas.admin_desktop_config import DesktopConfigCreate, DesktopConfigUpdate
+
+DEFAULT_PAGE_SIZE = 20
+MAX_PAGE_SIZE = 100
+
+
+class AdminDesktopConfigError(Exception):
+    def __init__(self, message: str) -> None:
+        self.message = message
+        super().__init__(message)
+
+
+async def list_configs(
+    db: AsyncSession,
+    *,
+    page: int = 1,
+    page_size: int = DEFAULT_PAGE_SIZE,
+    keyword: str | None = None,
+) -> tuple[list[DesktopConfig], int]:
+    page_size = min(max(page_size, 1), MAX_PAGE_SIZE)
+    page = max(page, 1)
+    offset = (page - 1) * page_size
+
+    filters = []
+    if keyword:
+        like = f"%{keyword.strip()}%"
+        filters.append(DesktopConfig.name.ilike(like))
+
+    count_stmt = select(func.count()).select_from(DesktopConfig)
+    list_stmt = select(DesktopConfig)
+    for clause in filters:
+        count_stmt = count_stmt.where(clause)
+        list_stmt = list_stmt.where(clause)
+
+    total = await db.scalar(count_stmt) or 0
+    result = await db.scalars(
+        list_stmt.order_by(DesktopConfig.name.asc()).offset(offset).limit(page_size)
+    )
+    return list(result.all()), total
+
+
+async def create_config(db: AsyncSession, body: DesktopConfigCreate) -> DesktopConfig:
+    existing = await db.scalar(select(DesktopConfig).where(DesktopConfig.name == body.name))
+    if existing is not None:
+        raise AdminDesktopConfigError("配置键名已存在")
+
+    row = DesktopConfig(name=body.name, value=body.value, mark=body.mark)
+    db.add(row)
+    await db.flush()
+    await db.refresh(row)
+    return row
+
+
+async def update_config(
+    db: AsyncSession,
+    config_id: int,
+    body: DesktopConfigUpdate,
+) -> DesktopConfig:
+    row = await db.get(DesktopConfig, config_id)
+    if row is None:
+        raise AdminDesktopConfigError("配置不存在")
+
+    if body.name is not None and body.name != row.name:
+        taken = await db.scalar(select(DesktopConfig).where(DesktopConfig.name == body.name))
+        if taken is not None:
+            raise AdminDesktopConfigError("配置键名已存在")
+        row.name = body.name
+
+    if body.value is not None:
+        row.value = body.value
+
+    if body.mark is not None:
+        row.mark = body.mark
+
+    await db.flush()
+    await db.refresh(row)
+    return row
+
+
+async def delete_config(db: AsyncSession, config_id: int) -> None:
+    row = await db.get(DesktopConfig, config_id)
+    if row is None:
+        raise AdminDesktopConfigError("配置不存在")
+    await db.delete(row)