fix: 按指标结果校准归属工时

app/services/report_allocations.py

@@ -17,6 +17,7 @@ from app.services.metrics import (
     _mold_key,
     _overlap_minutes,
     _schedule_interval,
+    calculate_report_metrics,
     format_hours,
     item_time_ranges,
     minutes_between,
@@ -129,6 +130,18 @@ def _item_reference_wage(item) -> float:
     return as_float(getattr(item, "good_qty", 0)) * as_float(getattr(item, "process_unit_price_yuan", 0))
 
 
+def _item_target_minutes(report, items: list, schedule: WorkScheduleConfig | None = None) -> dict[int, float]:
+    calculate_report_metrics(
+        getattr(report, "start_at"),
+        getattr(report, "end_at"),
+        items,
+        break_minutes=as_float(getattr(report, "break_minutes", 0)),
+        devices=_report_devices(report),
+        schedule=schedule,
+    )
+    return {id(item): as_float(getattr(item, "allocated_minutes", 0)) for item in items}
+
+
 def _minutes_total(rows: dict[date, dict[str, float]]) -> float:
     return sum(sum(minutes.get(key, 0.0) for key in SHIFT_BUCKETS) for minutes in rows.values())
 
@@ -180,6 +193,21 @@ def _scale_item_minutes_to_bucket_targets(
                 minutes[key] = minutes.get(key, 0.0) * scale
 
 
+def _scale_item_minutes_to_item_targets(
+    minutes_by_item: dict[int, dict[date, dict[str, float]]],
+    target_minutes_by_item: dict[int, float],
+) -> None:
+    for item_id, rows_by_date in minutes_by_item.items():
+        raw_total = _minutes_total(rows_by_date)
+        target_total = target_minutes_by_item.get(item_id, raw_total)
+        if raw_total <= 0 or abs(raw_total - target_total) <= 0.000001:
+            continue
+        scale = target_total / raw_total
+        for minutes in rows_by_date.values():
+            for key in SHIFT_BUCKETS:
+                minutes[key] = minutes.get(key, 0.0) * scale
+
+
 def _items_by_device(items: list) -> dict[str, list]:
     grouped: dict[str, list] = defaultdict(list)
     for item in items:
@@ -305,6 +333,7 @@ def build_report_allocation_drafts(report, schedule: WorkScheduleConfig | None =
     minutes_by_item = _device_minutes_by_item(report, items, schedule)
     if minutes_by_item is None:
         minutes_by_item = _range_minutes_by_item(report, items, schedule)
+    _scale_item_minutes_to_item_targets(minutes_by_item, _item_target_minutes(report, items, schedule))
 
     rows: list[ReportAllocationDraft] = []
     for item in items:

tests/test_report_allocations.py

@@ -297,6 +297,42 @@ def test_matched_meal_split_and_unmatched_device_range_follow_metrics_order():
     assert round(sum(row.effective_minutes for row in rows), 2) == metrics["effective_minutes"]
 
 
+def test_item_totals_anchor_to_metrics_when_unmatched_remaining_buckets_exceed_item_target():
+    start_at = datetime(2026, 7, 25, 8, 0)
+    second_started_at = datetime(2026, 7, 25, 12, 0)
+    switch_at = datetime(2026, 7, 25, 18, 0)
+    end_at = datetime(2026, 7, 25, 20, 0)
+    devices = [
+        _device(start_at, device_no="23#", sort_order=0),
+        _device(switch_at, device_no="77#", sort_order=1),
+    ]
+    first_item = _item(id=1, good_qty=240, device_no="23#", started_at=start_at)
+    second_item = _item(id=2, good_qty=360, device_no="23#", started_at=second_started_at)
+    unmatched_item = _item(id=3, good_qty=60, device_no="99#")
+    items = [first_item, second_item, unmatched_item]
+    report = _report(start_at, end_at, items, devices=devices)
+
+    metrics = calculate_report_metrics(start_at, end_at, items, devices=devices)
+    rows = build_report_allocation_drafts(report)
+
+    assert metrics["effective_minutes"] == 660
+    assert {item.id: item.allocated_minutes for item in items} == {
+        1: 240,
+        2: 360,
+        3: 60,
+    }
+    assert {
+        item_id: round(sum(row.effective_minutes for row in rows if row.report_item_id == item_id), 2)
+        for item_id in [1, 2, 3]
+    } == {
+        1: 240,
+        2: 360,
+        3: 60,
+    }
+    assert round(sum(row.effective_minutes for row in rows), 2) == 660
+    assert all(row.effective_minutes == row.day_minutes + row.overtime_minutes + row.night_minutes for row in rows)
+
+
 def test_zero_effective_minutes_falls_back_to_original_report_date():
     item = _item(good_qty=5, defect_qty=1, scrap_qty=0.5, changeover_count=2, process_unit_price_yuan=3)
     report = _report(