import { createAlova } from "alova";
import adapterFetch from "alova/fetch";

export type UploadedFile = {
  originalName: string;
  fileName: string;
  url: string;
  size: number;
  contentType: string | null;
};

export type RecognitionRequest = {
  url: string;
  type: string;
};

export type RecognitionResponse = {
  url: string;
  type: string;
  ppStructureResult: unknown;
};

const defaultApiBaseUrl = "http://192.168.1.137:8082";

function normalizeBaseUrl(baseUrl: string | undefined) {
  const value = baseUrl?.trim() || defaultApiBaseUrl;
  return value.endsWith("/") ? value.slice(0, -1) : value;
}

async function readErrorMessage(response: Response) {
  const fallback = `请求失败，状态码 ${response.status}`;

  try {
    const data = await response.json();
    return data.detail || data.message || data.error || fallback;
  } catch {
    return fallback;
  }
}

const http = createAlova({
  baseURL: normalizeBaseUrl(import.meta.env.VITE_API_BASE_URL),
  requestAdapter: adapterFetch(),
  responded: async (response) => {
    if (!response.ok) {
      throw new Error(await readErrorMessage(response));
    }

    return response.json();
  },
});

export function uploadFile(file: File) {
  const formData = new FormData();
  formData.append("file", file);

  return http.Post<UploadedFile>("/api/files/upload", formData).send();
}

export function recognizeDocument(data: RecognitionRequest) {
  return http.Post<RecognitionResponse>("/api/recognitions/start", data).send();
}