appwrite/app/config/storage/logos.php

<?php

return [ // Based on this list @see http://stackoverflow.com/a/4212908/2299554
    'default' => __DIR__ . '/logos/none.png',
    'default_image' => __DIR__ . '/logos/image.png',

    // Video Files

    'video/mp4' => __DIR__ . '/logos/video.png',
    'video/x-flv' => __DIR__ . '/logos/video.png',
    'video/webm' => __DIR__ . '/logos/video.png',
    'application/x-mpegURL' => __DIR__ . '/logos/video.png',
    'video/MP2T' => __DIR__ . '/logos/video.png',
    'video/3gpp' => __DIR__ . '/logos/video.png',
    'video/quicktime' => __DIR__ . '/logos/video.png',
    'video/x-msvideo' => __DIR__ . '/logos/video.png',
    'video/x-ms-wmv' => __DIR__ . '/logos/video.png',



    // // Microsoft Word
    // 'application/msword' =>  __DIR__.'/logos/word.png',
    // 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' =>  __DIR__.'/logos/word.png',
    // 'application/vnd.openxmlformats-officedocument.wordprocessingml.template' =>  __DIR__.'/logos/word.png',
    // 'application/vnd.ms-word.document.macroEnabled.12' =>  __DIR__.'/logos/word.png',

    // // Microsoft Excel
    // 'application/vnd.ms-excel' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.openxmlformats-officedocument.spreadsheetml.template' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.ms-excel.sheet.macroEnabled.12' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.ms-excel.template.macroEnabled.12' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.ms-excel.addin.macroEnabled.12' =>  __DIR__.'/logos/excel.png',
    // 'application/vnd.ms-excel.sheet.binary.macroEnabled.12' =>  __DIR__.'/logos/excel.png',

    // // Microsoft Power Point
    // 'application/vnd.ms-powerpoint' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.openxmlformats-officedocument.presentationml.presentation' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.openxmlformats-officedocument.presentationml.template' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.openxmlformats-officedocument.presentationml.slideshow' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.ms-powerpoint.addin.macroEnabled.12' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.ms-powerpoint.presentation.macroEnabled.12' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.ms-powerpoint.template.macroEnabled.12' =>  __DIR__.'/logos/ppt.png',
    // 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12' =>  __DIR__.'/logos/ppt.png',

    // Adobe PDF
    // 'application/pdf' =>  __DIR__.'/logos/pdf.png',
];