valor-software/ng2-file-upload

export class FileType {
  /*  MS office  */
  public static mime_doc:string[] = [
    'application/msword',
    'application/msword',
    'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
    'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
    'application/vnd.ms-word.document.macroEnabled.12',
    'application/vnd.ms-word.template.macroEnabled.12'
  ];
  public static mime_xsl:string[] = [
    'application/vnd.ms-excel',
    'application/vnd.ms-excel',
    'application/vnd.ms-excel',
    'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
    'application/vnd.ms-excel.sheet.macroEnabled.12',
    'application/vnd.ms-excel.template.macroEnabled.12',
    'application/vnd.ms-excel.addin.macroEnabled.12',
    'application/vnd.ms-excel.sheet.binary.macroEnabled.12'
  ];
  public static mime_ppt:string[] = [
    'application/vnd.ms-powerpoint',
    'application/vnd.ms-powerpoint',
    'application/vnd.ms-powerpoint',
    'application/vnd.ms-powerpoint',
    'application/vnd.openxmlformats-officedocument.presentationml.presentation',
    'application/vnd.openxmlformats-officedocument.presentationml.template',
    'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
    'application/vnd.ms-powerpoint.addin.macroEnabled.12',
    'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
    'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
    'application/vnd.ms-powerpoint.slideshow.macroEnabled.12'
  ];

  /* PSD */
  public static mime_psd:string[] = [
    'image/photoshop',
    'image/x-photoshop',
    'image/psd',
    'application/photoshop',
    'application/psd',
    'zz-application/zz-winassoc-psd'
  ];

  /* Compressed files */
  public static mime_compress:string[] = [
    'application/x-gtar',
    'application/x-gcompress',
    'application/compress',
    'application/x-tar',
    'application/x-rar-compressed',
    'application/octet-stream'
  ];

  public static getMimeClass(file:any):string {
    let mimeClass = 'application';
    if (this.mime_psd.indexOf(file.type) !== -1) {
      mimeClass = 'image';
    } else if (file.type.match('image.*')) {
      mimeClass = 'image';
    } else if (file.type.match('video.*')) {
      mimeClass = 'video';
    } else if (file.type.match('audio.*')) {
      mimeClass = 'audio';
    } else if (file.type === 'application/pdf') {
      mimeClass = 'pdf';
    } else if (this.mime_compress.indexOf(file.type) !== -1) {
      mimeClass = 'compress';
    } else if (this.mime_doc.indexOf(file.type) !== -1) {
      mimeClass = 'doc';
    } else if (this.mime_xsl.indexOf(file.type) !== -1) {
      mimeClass = 'xls';
    } else if (this.mime_ppt.indexOf(file.type) !== -1) {
      mimeClass = 'ppt';
    }
    if (mimeClass === 'application') {
      mimeClass = this.fileTypeDetection(file.name);
    }

    return mimeClass;
  }

  public static fileTypeDetection(inputFilename:string):string {
    let types:{[key:string]:string} = {
      'jpg': 'image',
      'jpeg': 'image',
      'tif': 'image',
      'psd': 'image',
      'bmp': 'image',
      'png': 'image',
      'nef': 'image',
      'tiff': 'image',
      'cr2': 'image',
      'dwg': 'image',
      'cdr': 'image',
      'ai': 'image',
      'indd': 'image',
      'pin': 'image',
      'cdp': 'image',
      'skp': 'image',
      'stp': 'image',
      '3dm': 'image',
      'mp3': 'audio',
      'wav': 'audio',
      'wma': 'audio',
      'mod': 'audio',
      'm4a': 'audio',
      'compress': 'compress',
      'rar': 'compress',
      '7z': 'compress',
      'lz': 'compress',
      'z01': 'compress',
      'pdf': 'pdf',
      'xls': 'xls',
      'xlsx': 'xls',
      'ods': 'xls',
      'mp4': 'video',
      'avi': 'video',
      'wmv': 'video',
      'mpg': 'video',
      'mts': 'video',
      'flv': 'video',
      '3gp': 'video',
      'vob': 'video',
      'm4v': 'video',
      'mpeg': 'video',
      'm2ts': 'video',
      'mov': 'video',
      'doc': 'doc',
      'docx': 'doc',
      'eps': 'doc',
      'txt': 'doc',
      'odt': 'doc',
      'rtf': 'doc',
      'ppt': 'ppt',
      'pptx': 'ppt',
      'pps': 'ppt',
      'ppsx': 'ppt',
      'odp': 'ppt'
    };

    let chunks = inputFilename.split('.');
    if (chunks.length < 2) {
      return 'application';
    }
    let extension = chunks[chunks.length - 1].toLowerCase();
    if (types[extension] === undefined) {
      return 'application';
    } else {
      return types[extension];
    }
  }
}