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;;; Copyright © 2019 - 2023 Jakob L. Kreuze <zerodaysfordays@sdf.org>
;;;
;;; This program is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License as
;;; published by the Free Software Foundation; either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (jakob dynamic capabilities gallery)
#:use-module (haunt html)
#:use-module (ice-9 match)
#:use-module (jakob dynamic config)
#:use-module (jakob dynamic errors)
#:use-module (jakob dynamic util)
#:use-module (jakob theme)
#:use-module (squee)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (web request)
#:use-module (web response)
#:use-module (web uri)
#:export (get-gallery get-image))
(define conn (connect-to-postgres-paramstring (paramstring-for-dbname "jakob_gallery")))
;; How many bytes of entropy to use when generating vanity ID's.
(define %vanity-length (make-parameter 9))
;; Path where gallery images are stored.
(define %gallery-image-directory (make-parameter "/home/jakob/gallery-images/"))
(define (valid-gallery-code code)
"Check database to see if `code' names a nonempty gallery."
(and (= (string-length code) (base64-length (%vanity-length)))
(positive?
(length
(exec-query conn "SELECT * FROM images WHERE vanity = $1"
(list code))))))
(define (render-gallery code)
(define info
(first
(exec-query conn "SELECT title, description, datetime FROM galleries WHERE vanity = $1" (list code))))
(define images
(exec-query conn "SELECT title, filename, thumb_filename, datetime FROM images WHERE vanity = $1" (list code)))
(match info
((title description datetime)
`(div (@ (id "gallery-container"))
(h1 ,title)
(h3 ,description)
,(map (lambda (image)
(match image
((title filename thumbnail datetime)
`(a (@ (href ,(format #f "/static-ext/~a" filename)))
(img (@ (src ,(format #f "/static-ext/~a" thumbnail))
(alt ,title)
(title ,(format #f "~a - ~a" title datetime))))))))
images)))))
(define (get-gallery request body)
(let* ((query-string (uri-query (request-uri request)))
(params (if query-string
(decode-form query-string)
'()))
(code (if (assoc-ref params "g")
(car (assoc-ref params "g"))
(panic "no gallery code provided"))))
(unless (valid-gallery-code code) (panic "invalid gallery code"))
(values '((content-type . (text/html)))
(sxml->html-string
(theme #:title "Photo Gallery" #:content (render-gallery code))))))
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