import { openDB, type IDBPDatabase } from 'idb'

export interface PendingReport {
  id?: number
  zone_token: string
  incident_type: string
  description: string
  injury_involved: boolean
  asset_involved: boolean
  medical_status?: string
  type_details?: Record<string, string | boolean>
  truck_id?: string
  created_at: string
}

let dbPromise: Promise<IDBPDatabase> | null = null

function getDb(): Promise<IDBPDatabase> {
  if (!dbPromise) {
    dbPromise = openDB('ims-offline', 1, {
      upgrade(db) {
        db.createObjectStore('pending_reports', { keyPath: 'id', autoIncrement: true })
      },
    })
  }
  return dbPromise
}

export async function addPendingReport(report: Omit<PendingReport, 'id'>): Promise<number> {
  const db = await getDb()
  return db.add('pending_reports', report) as Promise<number>
}

export async function getPendingReports(): Promise<PendingReport[]> {
  const db = await getDb()
  return db.getAll('pending_reports')
}

export async function removePendingReport(id: number): Promise<void> {
  const db = await getDb()
  return db.delete('pending_reports', id)
}

export async function getPendingCount(): Promise<number> {
  const db = await getDb()
  return db.count('pending_reports')
}