import type { SituationalAwarenessGateway } from './port'
import { HttpSituationalAwarenessGateway } from './http-gateway'
import { MockSituationalAwarenessGateway } from './mock-gateway'

export * from './types'
export type { SituationalAwarenessGateway } from './port'

let singleton: SituationalAwarenessGateway | null = null

export function createSituationalAwarenessGateway(): SituationalAwarenessGateway {
  const provider = (import.meta as any).env?.VITE_SA_GATEWAY || 'http'
  if (provider === 'mock') {
    return new MockSituationalAwarenessGateway()
  }
  return new HttpSituationalAwarenessGateway()
}

export function getSituationalAwarenessGateway(): SituationalAwarenessGateway {
  if (!singleton) {
    singleton = createSituationalAwarenessGateway()
  }
  return singleton
}