"""Dashboard API — 上帝视角（全厂数据，无用户过滤）"""
from datetime import datetime
from fastapi import APIRouter, Depends, Query
from sqlalchemy.ext.asyncio import AsyncSession
from app.core.database import get_db
from app.services.dashboard_service import (
    get_dashboard_stats, DashboardStats,
    get_wip_tasks, WipTask,
    search_product_messages, ProductMessageList,
)

router = APIRouter(prefix="/dashboard", tags=["管理看板"])


@router.get("/stats", response_model=DashboardStats)
async def dashboard_stats(
    since: str | None = Query(None, description="起始日期 ISO 如 2026-08-01T00:00:00"),
    until: str | None = Query(None, description="截止日期 ISO"),
    db: AsyncSession = Depends(get_db),
):
    """
    全局统计（上帝视角）。

    时间筛选仅影响 COMPLETED / REJECTED 计数；
    PENDING / WIP / 总数永远返回实时快照。
    """
    since_dt = datetime.fromisoformat(since) if since else None
    until_dt = datetime.fromisoformat(until) if until else None
    return await get_dashboard_stats(db, since=since_dt, until=until_dt)


@router.get("/wip-tasks", response_model=list[WipTask])
async def wip_tasks(
    limit: int = Query(20, ge=1, le=100),
    db: AsyncSession = Depends(get_db),
):
    """在制品看板 — 永远实时的 PENDING/WIP 任务"""
    return await get_wip_tasks(db, limit)


@router.get("/messages", response_model=ProductMessageList)
async def dashboard_messages(
    keyword: str = Query("", description="搜索: SN码/物料名/留言人/内容"),
    skip: int = Query(0, ge=0),
    limit: int = Query(30, ge=1, le=200),
    db: AsyncSession = Depends(get_db),
):
    """
    协同留言搜索（上帝视角 — 全厂所有产品留言）。

    关联 Product 表返回 serial_number + material_name，
    按时间倒序排列。
    """
    return await search_product_messages(db, keyword=keyword, skip=skip, limit=limit)