feat: expose safe source health status

apps/api/app/main.py

@@ -24,9 +24,9 @@ from .config import settings
 from .community_review import ExternalReviewError, map_observation, publish_observation, reject_observation
 from .importer import ImportAlreadyRunning, ImportSourceError, import_records, normalize
 from .logging_config import configure_logging
-from .models import Bait, BaitKind, CatchReport, DataSource, ExternalObservation, Fish, ModerationEvent, ModerationStatus, OfficialRecordImport, SourceType, Spot, SubmissionAttempt, Waterbody
+from .models import Bait, BaitKind, CatchReport, CommunityImportRun, DataSource, ExternalObservation, Fish, ModerationEvent, ModerationStatus, OfficialRecordImport, SourceType, Spot, SubmissionAttempt, Waterbody
 from .readiness import readiness_report
-from .schemas import ActivityOut, AdminCatchReportOut, BaitOut, CatchOut, CatchReportAccepted, CatchReportCreate, CatchReportCreated, ExternalObservationDecision, ExternalObservationMapping, ExternalObservationOut, ExternalObservationPublished, FishOut, ImportRunOut, ModerationUpdate, OfficialRecordOut, PublicObservationOut, SpotOut, WaterbodyOut
+from .schemas import ActivityOut, AdminCatchReportOut, BaitOut, CatchOut, CatchReportAccepted, CatchReportCreate, CatchReportCreated, ExternalObservationDecision, ExternalObservationMapping, ExternalObservationOut, ExternalObservationPublished, FishOut, ImportRunOut, ModerationUpdate, OfficialRecordOut, PublicObservationOut, SourceStatusOut, SpotOut, WaterbodyOut
 from .storage import ScreenshotError, client as storage_client, delete_screenshot, signed_screenshot_url, upload_screenshot
 
 
@@ -209,6 +209,30 @@ def community_observations(
     return result
 
 
+@app.get("/api/v1/source-status", response_model=list[SourceStatusOut])
+def source_status(db: Db) -> list[SourceStatusOut]:
+    now = datetime.now(timezone.utc)
+    result = []
+    for source in db.scalars(select(DataSource).order_by(DataSource.name)):
+        runs = list(db.scalars(select(CommunityImportRun).where(CommunityImportRun.source_system == source.key).order_by(CommunityImportRun.started_at.desc()).limit(20)))
+        latest = runs[0] if runs else None
+        success = next((run for run in runs if run.status == "success"), None)
+        if not source.enabled:
+            state = "disabled"
+        elif latest is None:
+            state = "waiting"
+        elif latest.status == "failed":
+            state = "source_changed" if "CommunityParseError" in (latest.error_summary or "") else "temporarily_limited"
+        elif _aware(latest.started_at) < now - timedelta(seconds=settings.community_import_interval_seconds * 2):
+            state = "stale"
+        else:
+            state = "healthy"
+        result.append(SourceStatusOut(source_system=source.key, name=source.name, status=state,
+            last_started_at=latest.started_at if latest else None, last_success_at=success.started_at if success else None,
+            observations=db.scalar(select(func.count()).select_from(ExternalObservation).where(ExternalObservation.source_system == source.key)) or 0))
+    return result
+
+
 @app.get("/api/v1/records", response_model=list[OfficialRecordOut])
 def records(
     db: Db, fish: str | None = None, waterbody: str | None = None,