import { message } from 'antd';
import { convertFileSize } from './index';

// TODO: create a file.ts in utils folder to manage file related utils

export const audioTypeMap: Record<string, string> = {
  'audio/wav': 'wav',
  'audio/mp3': 'mp3',
  'audio/mpeg': 'mp3',
  'audio/x-wav': 'wav'
};

export const convertFileToBase64 = (file: File): Promise<string> => {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onload = () => resolve(reader.result as string);
    reader.onerror = (error) => reject(error);
  });
};

export const loadAudioData = async (
  data: any,
  type: string
): Promise<{
  data: Blob;
  size: number | string;
  type: string;
  duration: number;
  url: string;
}> => {
  return new Promise((resolve, reject) => {
    const audioBlob = new Blob([data], { type: type });
    const fileSize = convertFileSize(audioBlob.size);

    const audio = document.createElement('audio');
    const url = URL.createObjectURL(audioBlob);
    audio.src = url;

    audio.addEventListener('loadedmetadata', () => {
      const duration = audio.duration;
      resolve({
        data: audioBlob,
        size: fileSize,
        type: type,
        duration: Math.ceil(duration),
        url: url
      });
    });

    audio.addEventListener('ended', () => {
      URL.revokeObjectURL(audio.src);
    });

    audio.addEventListener('error', () => {
      URL.revokeObjectURL(url);
      message.error('Failed to load audio metadata invalid file');
      reject(new Error('Failed to load audio metadata invalid file'));
    });
  });
};

export const readAudioFile = async (
  file: File
): Promise<{ url: string; name: string; duration: number }> => {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = async function (e: any) {
      try {
        const arrayBuffer = e.target.result;
        const audioData = await loadAudioData(arrayBuffer, file.type);
        resolve({
          ...(audioData || {}),
          name: file.name
        });
      } catch (error) {
        reject(error);
      }
    };

    reader.onerror = (error) => reject(error);
    reader.readAsArrayBuffer(file);
  });
};