const BASE_URL = process.env.NEXT_PUBLIC_API_URL ?? 'http://localhost:8000'

export type Encoder = 'xlm-roberta-large'
export type Decoder = 'gemma3' | 'qwen3'

export interface AnnotationEntry {
  span: string
  emojis: string
}

export interface AnnotationData {
  marked: string
  annotations: AnnotationEntry[]
}

export interface AnnotateResponse {
  valid: boolean
  annotation?: AnnotationData
  reason?: string
}

export async function postAnnotate(
  encoder: Encoder,
  decoder: Decoder,
  text: string,
  signal?: AbortSignal
): Promise<AnnotateResponse> {
  const res = await fetch(`${BASE_URL}/api/annotate`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ encoder, decoder, text }),
    signal,
  })
  if (!res.ok) throw new Error(`HTTP ${res.status}`)
  return res.json()
}