// frontend/lib/api.ts

import type { DetectionResponse } from '@/types/detection'

const BASE_URL = '/api'

async function _post(endpoint: string, file: File): Promise<DetectionResponse> {
  const form = new FormData()
  form.append('file', file)

  const res = await fetch(`${BASE_URL}${endpoint}`, {
    method: 'POST',
    body: form,
  })

  if (!res.ok) {
    const err = await res.text()
    throw new Error(`Detection failed (${res.status}): ${err}`)
  }

  return res.json()
}

export const detectImage = (file: File) => _post('/detect/image', file)
export const detectVideo = (file: File) => _post('/detect/video', file)

export async function healthCheck(): Promise<{ status: string; version?: string }> {
  const res = await fetch(`${BASE_URL}/health`)
  if (!res.ok) throw new Error(`Health check failed: ${res.status}`)
  return res.json()
}