feat(iace): surface OSHA distance anchor in Maßnahmen tab (name-resolved)

Makes the OSHA minimum-distance anchor visible per measure in a project without a DB schema change or re-seed: persisted mitigations store the measure NAME verbatim (not the catalog ID), and measure names are unique across the 578-entry library (pinned by test), so a name→ID resolver bridges the gap. Backend: MeasureIDByName + MinimumDistancesForMeasureName/LinksForMeasureName; /iace/minimum-distances now accepts ?measure_name=; link table enriched with measure_name for one-request UI matching. Frontend: useMinimumDistances loads the link table once and keys it by name; OshaDistanceNote renders the anchor (value/CFR/license/EU-hint/relation) on the matching measure group in the Maßnahmen tab. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-11 13:39:48 +02:00
parent 76be96556d
commit 6b41eec176
6 changed files with 226 additions and 8 deletions
@@ -0,0 +1,77 @@
+'use client'
+
+import { useEffect, useState } from 'react'
+
+export interface EuNormHint {
+  norm: string
+  section?: string
+  din_comparison_note?: string
+}
+
+export interface MinimumDistance {
+  id: string
+  source_cfr?: string
+  source_table?: string
+  license: string
+  context: string
+  body_part?: string
+  recommended_mm?: number
+  recommended_min_mm?: number
+  recommended_max_mm?: number
+  formula_description?: string
+  formula_mm_per_second?: number
+  rounding_note?: string
+  eu_norm_hints?: EuNormHint[]
+}
+
+export interface MeasureDistanceLink {
+  measure_id: string
+  measure_name?: string
+  distance_ids: string[]
+  relation: string // "value_source" | "public_domain_crossref"
+  note?: string
+}
+
+export interface OshaAnchor {
+  link: MeasureDistanceLink
+  distances: MinimumDistance[]
+}
+
+/**
+ * Loads the OSHA minimum-distance link table ONCE and returns a lookup keyed by
+ * (lower-cased) measure name. A persisted mitigation stores the measure name
+ * verbatim, so the Maßnahmen tab can surface the OSHA anchor by matching on name
+ * — no per-row request, no catalog ID needed.
+ */
+export function useMinimumDistances() {
+  const [byName, setByName] = useState<Record<string, OshaAnchor>>({})
+
+  useEffect(() => {
+    let cancelled = false
+    async function load() {
+      try {
+        const res = await fetch('/api/sdk/v1/iace/minimum-distances')
+        if (!res.ok) return
+        const json = (await res.json()) as { distances: MinimumDistance[]; links: MeasureDistanceLink[] }
+        const byId = Object.fromEntries((json.distances || []).map((d) => [d.id, d]))
+        const map: Record<string, OshaAnchor> = {}
+        for (const link of json.links || []) {
+          if (!link.measure_name) continue
+          map[link.measure_name.toLowerCase()] = {
+            link,
+            distances: link.distance_ids.map((id) => byId[id]).filter(Boolean),
+          }
+        }
+        if (!cancelled) setByName(map)
+      } catch (err) {
+        console.error('Failed to load minimum distances:', err)
+      }
+    }
+    load()
+    return () => {
+      cancelled = true
+    }
+  }, [])
+
+  return { byName }
+}