#|

# File Attachments

Attachment class for saving metadata into RDBMS

See MITO-ATTACHMENT for more information: <https://github.com/fukamachi/mito-attachment>

TODO AWS Storage / CC API Upload?

Here's the bit of code for the FILEs:

;; (destructuring-bind (content filename content-type)
;;     file
;;   (if (and (eq (type-of content) 'flex::vector-input-stream)
;;            (> (length (flex::vector-stream-vector content)) 0))
;;       ...))

|#

(in-package #:cl-deck-builder2.models.attachment)

(defclass attachment (mito-attachment:attachment) ()
  (:metaclass registered-table-class))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun create-attachment (content file-key content-type)
  "Use CREATE-DAO to construct a new ATTACHMENT instance. Return the instance if successful, NIL otherwise."
  (create-dao 'attachment
              :content content
              :file-key file-key
              :content-type content-type))

(defun attachment-valid-p (file)
  "Helper function. Ensure FILE data from Caveman has valid:

- Type: 'FLEX::VECTOR-INPUT-STREAM
- Filename: Length > 0
- File Length: Content Length > 0"
  (destructuring-bind (content filename content-type)
      file
    ;; XXX Don't ignore content type?
    (declare (ignore content-type))
    (and (eq (type-of content) 'flex::vector-input-stream)
         (> (length (flex::vector-stream-vector content)) 0)
         (> (length filename) 0))))