Implement sustainable file handling

Research-IT-Swiss-TPH / pdf-form-filling-api

API to read, fill and flatten PDF forms.

https://143.198.242.211.sslip.io/

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Implement sustainable file handling #25

Closed tertek closed 6 months ago

tertek commented 7 months ago

For writing, deleting, updating and reading documents, a sustainable file handling approach is required. The requirements are:

configurable over default config
configure data volume provider: local, external
configure different sources/destinations, e.g. for templates and outputs (see ERD for context) also allowing different levels of data privacy, security in case we have to temporarily store client payloads
should be a stable/supported package within the PHP/Slim ecosystem

tertek commented 7 months ago

Slim Framework provides an interface with some methods to handle files that could be useful:

The file uploads in $_FILES are available from the Request object’s getUploadedFiles() method. This returns an array keyed by the name of the input element.

Each object in the $files array is an instance of Psr\Http\Message\UploadedFileInterface

For more information: https://www.slimframework.com/docs/v4/objects/request.html#uploaded-files

tertek commented 7 months ago

Additional information on file uploading and handling:

Slim eBook Vol. 2: Chapter "File Uploads", p. 38 - 49 (file upload basics)

Slim eBook Vol. 2: Chapter "Flysystem v3", p.49 - 83 (file storage library)

Slim eBook Vol. 2: Chapter "ZIP files", p.208 - 217 (ZIP File Creation and Download)

Slim eBook Vol. 3 Chapter "Amazon S3", p. 9 - 21 (Simple Storage Service) ; this is only relevant for later, but for now it is good to know how to build the abstraction layer