Add thumbnail to document content type

[simonrjones]

Sean: I’m using the document type for a file upload, but it’s not passing through the following data from WordPress:

• What type of file it is (e.g. docx, .xlsx, .pdf etc.)
• The thumbnail for the file (WordPress generates this for PDF files for example: https://wordpress.org/support/topic/how-do-i-get-the-attached-thumbnail-for-an-uploaded-pdf/)

[simonrjones]

Exists in WP API:

• mime_type

Example mime types:

• application/pdf
• application/vnd.openxmlformats-officedocument.wordprocessingml.document (Word doc)
• application/vnd.openxmlformats-officedocument.spreadsheetml.sheet (Excel)

See AssetField::guesser() and getMimeType()

Also see:

• media_details.filesize (bytes)

[simonrjones]

File type added via asset.getExtension on v0.6.5

Need to review options for creating image thumbnail, since not trivial to resolve this on the WordPress end. May be best to solve on Frontend.

[simonrjones]

See https://packagist.org/packages/spatie/pdf-to-image
https://freek.dev/223-convert-a-pdf-to-an-image-using-php