import { PDFStatus } from '../types';

const API_BASE = '/api';

export const pdfPreviewService = {
  // PDFプレビューURLの取得
  async getPDFUrl(fileId: string): Promise<{ url: string }> {
    const response = await fetch(`${API_BASE}/knowledge-bases/${fileId}/pdf-url`, {
      headers: {
        'Authorization': `Bearer ${localStorage.getItem('authToken')}`,
      },
    });
    if (!response.ok) {
      const errorData = await response.json().catch(() => ({}));
      throw new Error(errorData.message || 'Failed to get PDF URL');
    }
    return response.json();
  },

  // PDFステータスの確認
  async getPDFStatus(fileId: string): Promise<PDFStatus> {
    const response = await fetch(`${API_BASE}/knowledge-bases/${fileId}/pdf-status`, {
      headers: {
        'Authorization': `Bearer ${localStorage.getItem('authToken')}`,
      },
    });
    if (!response.ok) {
      const errorData = await response.json().catch(() => ({}));
      throw new Error(errorData.message || 'Failed to fetch PDF status');
    }
    return response.json();
  },

  // PDFのプリロード（変換のトリガー）
  async preloadPDF(fileId: string, force: boolean = false): Promise<void> {
    try {
      const url = `${API_BASE}/knowledge-bases/${fileId}/pdf-url` + (force ? '?force=true' : '');
      const response = await fetch(url, {
        method: 'GET',
        headers: {
          'Authorization': `Bearer ${localStorage.getItem('authToken')}`,
        },
        signal: AbortSignal.timeout(30000), // Increase timeout for conversion
      });

      if (response.ok) {
        console.log('PDF already exists or conversion completed');
      }
    } catch (error) {
      console.log('PDF conversion triggered:', error.message);
    }
  },
};