feat: AI triage suggestion — severity + DOSH flags pre-fill

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FFDuBhMKvoWjrWT3ZnGmmr
2026-07-11 16:27:29 +08:00
parent a5933d2cd9
commit f10fa071f9
3 changed files with 219 additions and 7 deletions
@@ -0,0 +1,105 @@
+export const dynamic = 'force-dynamic'
+
+import { NextRequest, NextResponse } from 'next/server'
+import { createClient } from '@/lib/supabase/server'
+import { anthropic } from '@/lib/claude/client'
+
+export async function POST(
+  _request: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  const { id } = await params
+  const supabase = await createClient()
+  const { data: { user }, error: authError } = await supabase.auth.getUser()
+  if (authError || !user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+
+  const { data: profile } = await supabase.from('users').select('role').eq('id', user.id).single()
+  if (!profile || !['hse', 'admin'].includes(profile.role))
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
+
+  const { data: incident } = await supabase
+    .from('incidents')
+    .select('id, incident_type, description, injury_involved, asset_involved, medical_status')
+    .eq('id', id)
+    .single()
+  if (!incident) return NextResponse.json({ error: 'Not found' }, { status: 404 })
+
+  const inc = incident as {
+    incident_type: string
+    description: string
+    injury_involved: boolean
+    asset_involved: boolean
+    medical_status: string | null
+  }
+
+  const message = await anthropic.messages.create({
+    model: 'claude-opus-4-8',
+    thinking: { type: 'adaptive' },
+    max_tokens: 1024,
+    tools: [{
+      name: 'suggest_triage',
+      description: 'Suggest severity rating and NADOPOD 2004 DOSH classification for a warehouse incident',
+      input_schema: {
+        type: 'object' as const,
+        properties: {
+          severity: { type: 'number', description: '1=minor, 2=low, 3=moderate, 4=serious, 5=critical/fatality' },
+          is_fatality: { type: 'boolean' },
+          is_serious_bodily_injury: { type: 'boolean', description: 'Fracture, amputation, blindness, serious burn, or similar' },
+          is_dangerous_occurrence: { type: 'boolean', description: 'Structural collapse, explosion, fire, scaffold collapse, etc.' },
+          is_occupational_disease: { type: 'boolean', description: 'Disease arising from workplace exposure' },
+          rationale: { type: 'string', description: 'One-sentence rationale citing NADOPOD 2004 where applicable' },
+        },
+        required: [
+          'severity', 'is_fatality', 'is_serious_bodily_injury',
+          'is_dangerous_occurrence', 'is_occupational_disease', 'rationale',
+        ],
+      },
+    }],
+    tool_choice: { type: 'tool', name: 'suggest_triage' },
+    messages: [{
+      role: 'user',
+      content: `You are an HSE triage specialist for a Malaysian 3PL warehouse. Assess this incident under NADOPOD 2004.
+
+Incident type: ${inc.incident_type}
+Description: ${inc.description}
+Injury involved: ${inc.injury_involved ? 'yes' : 'no'}
+Medical status: ${inc.medical_status ?? 'N/A'}
+Asset/equipment involved: ${inc.asset_involved ? 'yes' : 'no'}
+
+Suggest severity (1–5) and tick the appropriate NADOPOD 2004 flags. Give a one-sentence rationale.`,
+    }],
+  })
+
+  const toolBlock = message.content.find(b => b.type === 'tool_use')
+  if (!toolBlock || toolBlock.type !== 'tool_use')
+    return NextResponse.json({ error: 'AI suggestion failed' }, { status: 500 })
+
+  const input = toolBlock.input as {
+    severity?: unknown
+    is_fatality?: unknown
+    is_serious_bodily_injury?: unknown
+    is_dangerous_occurrence?: unknown
+    is_occupational_disease?: unknown
+    rationale?: unknown
+  }
+
+  if (
+    typeof input.severity !== 'number' ||
+    typeof input.is_fatality !== 'boolean' ||
+    typeof input.is_serious_bodily_injury !== 'boolean' ||
+    typeof input.is_dangerous_occurrence !== 'boolean' ||
+    typeof input.is_occupational_disease !== 'boolean' ||
+    typeof input.rationale !== 'string'
+  ) {
+    return NextResponse.json({ error: 'AI returned unexpected structure' }, { status: 500 })
+  }
+
+  await supabase.rpc('write_audit_log', {
+    p_table_name: 'incidents',
+    p_record_id: id,
+    p_action: 'ai_triage_suggest',
+    p_new_value: { suggestion: toolBlock.input, model: 'claude-opus-4-8' } as never,
+  })
+
+  return NextResponse.json(toolBlock.input)
+}