Add OSHA Form 301 and Osha page components

- Implemented Form301 component for displaying OSHA Form 301 equivalent, including employee and case information.
- Created Osha component to manage OSHA recordkeeping, including tabs for 300 Log, 300A Summary, Hours & rates, and Submit to OSHA.
- Added functionality for printing and downloading CSV files for OSHA submissions.
- Integrated loading and error handling states for data fetching.

server/db/seed.ts

@@ -2,7 +2,8 @@
 import { hashPassword } from '../auth/password.ts'
 import { loadConfig } from '../config.ts'
 import { openDatabase } from './client.ts'
-import { auditLog, areas, incidentCounters, incidents, organizations, sites, users } from './schema.ts'
+import { assessRecordability } from '../../shared/osha.ts'
+import { auditLog, areas, correctiveActions, hoursWorked, incidentCounters, incidents, injuredPersons, investigations, organizations, rootCauses, sites, users } from './schema.ts'
 
 const DEMO_PASSWORD = 'safetylog-demo'
 
@@ -79,10 +80,151 @@ try {
           createdAt: incident.createdAt,
         })),
       )
-      await tx.insert(incidentCounters).values({ organizationId: org.id, lastNumber: demo.length })
+      // A year of history so dashboards and the OSHA log have something to show
+      const lastNumber = await seedHistory(tx as unknown as typeof db, org.id, demo.length, areaIds, people.map((p) => p.id))
+      await tx.insert(incidentCounters).values({ organizationId: org.id, lastNumber })
     })
     console.log(`Seeded demo data. Sign in as admin@example.com, manager@example.com, supervisor@example.com or reporter@example.com with password "${DEMO_PASSWORD}".`)
   }
 } finally {
   await close()
 }
+
+/** Deterministic pseudo-random numbers, so every seed produces the same demo. */
+function random(seed: number) {
+  let state = seed
+  return () => {
+    state = (state * 1_664_525 + 1_013_904_223) % 2 ** 32
+    return state / 2 ** 32
+  }
+}
+
+async function seedHistory(
+  database: typeof db,
+  organizationId: string,
+  startNumber: number,
+  areaIds: Record<string, { siteId: string; areaId: string }>,
+  userIds: string[],
+): Promise<number> {
+  const rand = random(42)
+  const pick = <T>(items: readonly T[]) => items[Math.floor(rand() * items.length)]
+  const day = 86_400_000
+  const now = Date.now()
+  const locations = Object.values(areaIds)
+  // Near misses and hazards outnumber injuries, as in a healthy reporting culture
+  const types = ['near_miss', 'near_miss', 'near_miss', 'hazard', 'hazard', 'hazard', 'injury', 'injury', 'property_damage', 'environmental', 'illness'] as const
+  // Busier around shift changes (06–08, 14–16) and mid-shift
+  const hours = [6, 7, 7, 9, 10, 11, 13, 14, 14, 15, 15, 16, 19, 22, 2]
+  const titles = {
+    near_miss: ['Forklift nearly struck pedestrian', 'Load slipped from pallet jack', 'Unsecured ladder almost fell', 'Dropped tool from mezzanine'],
+    hazard: ['Oil leak under press', 'Blocked emergency exit', 'Damaged guard on conveyor', 'Frayed extension cord', 'Missing machine guard'],
+    injury: ['Hand laceration from sheet metal', 'Back strain lifting boxes', 'Slip on wet floor', 'Pinched finger in die'],
+    illness: ['Dermatitis from cutting fluid'],
+    property_damage: ['Forklift hit racking', 'Damaged dock door'],
+    environmental: ['Hydraulic fluid spill', 'Coolant leak to drain'],
+  } as const
+  const categories = ['people', 'process', 'equipment', 'materials', 'environment', 'management'] as const
+
+  let number = startNumber
+  for (let i = 0; i < 150; i++) {
+    const type = pick(types)
+    const occurred = new Date(now - Math.floor(rand() * 360 + 3) * day)
+    occurred.setHours(pick(hours), Math.floor(rand() * 60), 0, 0)
+    const created = new Date(occurred.getTime() + (1 + rand() * 6) * 3_600_000)
+    const age = (now - occurred.getTime()) / day
+    const status = age > 60 ? (rand() < 0.85 ? 'closed' : 'actions') : age > 20 ? pick(['investigation', 'actions', 'verification', 'closed'] as const) : pick(['reported', 'triage', 'investigation'] as const)
+    const closedAt = status === 'closed' ? new Date(created.getTime() + (5 + rand() * 35) * day) : null
+    number++
+    const [incident] = await database
+      .insert(incidents)
+      .values({
+        organizationId,
+        number,
+        title: pick(titles[type]),
+        type,
+        severity: type === 'injury' ? pick(['medium', 'high', 'high'] as const) : pick(['low', 'medium', 'medium', 'high'] as const),
+        status,
+        occurredAt: occurred,
+        createdAt: created,
+        closedAt: closedAt && closedAt.getTime() < now ? closedAt : null,
+        ...pick(locations),
+        reporterId: pick(userIds),
+      })
+      .returning()
+    const auditRows: (typeof auditLog.$inferInsert)[] = [
+      { organizationId, actorId: incident.reporterId, entityType: 'incident', entityId: incident.id, action: 'create', changes: { number, title: incident.title }, createdAt: created },
+    ]
+    if (status !== 'reported') {
+      // Most reports are triaged within a day; the team got quicker over the year
+      const delayHours = rand() < 0.55 + (1 - age / 365) * 0.35 ? 2 + rand() * 18 : 26 + rand() * 70
+      auditRows.push({ organizationId, actorId: pick(userIds), entityType: 'incident', entityId: incident.id, action: 'status', changes: { status: ['reported', 'triage'] }, createdAt: new Date(created.getTime() + delayHours * 3_600_000) })
+    }
+    await database.insert(auditLog).values(auditRows)
+
+    if (['investigation', 'actions', 'verification', 'closed'].includes(status) && type !== 'near_miss') {
+      const [investigation] = await database.insert(investigations).values({ incidentId: incident.id, method: 'five_whys', startedAt: created }).returning()
+      const causes = await database
+        .insert(rootCauses)
+        .values(Array.from({ length: 1 + Math.floor(rand() * 2) }, () => ({ investigationId: investigation.id, category: pick(categories), description: 'Identified during investigation' })))
+        .returning()
+      const due = new Date(created.getTime() + 21 * day)
+      const done = status === 'closed' || status === 'verification' || rand() < 0.4
+      const completed = new Date(created.getTime() + (8 + rand() * 30) * day)
+      await database.insert(correctiveActions).values({
+        incidentId: incident.id,
+        rootCauseId: causes[0].id,
+        title: 'Fix the cause and brief the team',
+        assigneeId: pick(userIds),
+        dueDate: due.toISOString().slice(0, 10),
+        status: done && completed.getTime() < now ? (status === 'closed' ? 'verified' : 'done') : 'open',
+        completedAt: done && completed.getTime() < now ? completed : null,
+      })
+    }
+
+    if ((type === 'injury' || type === 'illness') && rand() < 0.6) {
+      const answers = {
+        employmentType: 'employee' as const,
+        workRelated: true,
+        newCase: true,
+        died: false,
+        daysAwayFromWork: rand() < 0.3,
+        restrictedOrTransfer: rand() < 0.4,
+        medicalTreatment: rand() < 0.7,
+        lossOfConsciousness: false,
+        significantDiagnosis: false,
+        specialCase: 'none' as const,
+      }
+      const verdict = assessRecordability(answers)
+      await database.insert(injuredPersons).values({
+        incidentId: incident.id,
+        caseNumber: `INC-${String(number).padStart(4, '0')}`,
+        name: pick(['Alex Moreno', 'Jamie Patel', 'Chris Nguyen', 'Taylor Brooks', 'Morgan Diaz']),
+        jobTitle: pick(['Press operator', 'Material handler', 'Maintenance technician', 'Assembler']),
+        natureOfInjury: incident.title,
+        caseType: type === 'illness' ? 'skin_disorder' : 'injury',
+        ...answers,
+        daysAway: answers.daysAwayFromWork ? 1 + Math.floor(rand() * 10) : 0,
+        daysRestricted: answers.restrictedOrTransfer ? 2 + Math.floor(rand() * 14) : 0,
+        recordable: verdict.status === 'recordable',
+        outcome: verdict.outcome,
+      })
+    }
+  }
+
+  // Monthly hours worked and headcount for every site, for the last 13 months
+  const siteIds = [...new Set(locations.map((l) => l.siteId))]
+  const today = new Date()
+  for (const siteId of siteIds) {
+    for (let m = 12; m >= 0; m--) {
+      const month = new Date(today.getFullYear(), today.getMonth() - m, 1)
+      const employees = 70 + Math.floor(rand() * 30)
+      await database.insert(hoursWorked).values({
+        siteId,
+        month: `${month.getFullYear()}-${String(month.getMonth() + 1).padStart(2, '0')}-01`,
+        hours: String(employees * 168),
+        averageEmployees: employees,
+      })
+    }
+  }
+  return number
+}