From 6cbe572b7e5d2e1357a10f0dff94b561129f34c6 Mon Sep 17 00:00:00 2001
From: Vivien Kraus <vivien@planete-kraus.eu>
Date: Sun, 27 Jun 2021 15:56:20 +0200
Subject: Add a function to delete a resource as with DELETE

---
 src/scm/webid-oidc/server/delete.scm | 66 ++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/scm/webid-oidc/server/delete.scm

(limited to 'src/scm/webid-oidc/server/delete.scm')

diff --git a/src/scm/webid-oidc/server/delete.scm b/src/scm/webid-oidc/server/delete.scm
new file mode 100644
index 0000000..edd23cb
--- /dev/null
+++ b/src/scm/webid-oidc/server/delete.scm
@@ -0,0 +1,66 @@
+(define-module (webid-oidc server delete)
+  #:use-module (webid-oidc errors)
+  #:use-module (webid-oidc server resource path)
+  #:use-module (webid-oidc server resource content)
+  #:use-module (webid-oidc server precondition)
+  #:use-module (webid-oidc cache)
+  #:use-module (webid-oidc fetch)
+  #:use-module (webid-oidc http-link)
+  #:use-module (webid-oidc server resource wac)
+  #:use-module ((webid-oidc stubs) #:prefix stubs:)
+  #:use-module (webid-oidc rdf-index)
+  #:use-module ((webid-oidc refresh-token) #:prefix refresh:)
+  #:use-module (web uri)
+  #:use-module (web client)
+  #:use-module (web response)
+  #:use-module (rdf rdf)
+  #:use-module (turtle tordf)
+  #:use-module (turtle fromrdf)
+  #:use-module (rnrs bytevectors)
+  #:use-module (ice-9 exceptions)
+  #:use-module (ice-9 receive)
+  #:use-module (ice-9 optargs)
+  #:use-module (ice-9 iconv)
+  #:use-module (ice-9 textual-ports)
+  #:use-module (ice-9 binary-ports)
+  #:use-module (ice-9 threads)
+  #:use-module (ice-9 hash-table)
+  #:use-module (rnrs bytevectors)
+  #:use-module (oop goops)
+  #:export
+  (
+
+   delete
+
+   ))
+
+(define* (delete server-name owner user path if-match if-none-match
+                 #:key
+                 (http-get http-get))
+  (check-acl-can-write server-name path owner user)
+  (with-session
+   (lambda (load-content-type load-contained load-static-content
+                              do-create do-delete)
+     (receive (base-path path-type)
+         (base-path path)
+       (update-path
+        base-path
+        (lambda (main-etag auxiliary)
+          (let ((relevant-etag
+                 (if path-type
+                     (assoc-ref auxiliary path-type)
+                     main-etag)))
+            (check-precondition path if-match if-none-match relevant-etag)
+            (if path-type
+                ;; Delete an auxiliary resource
+                (values
+                 main-etag
+                 (filter
+                  (lambda (auxiliary)
+                    (not (equal? (car auxiliary) path-type)))
+                  auxiliary))
+                ;; Delete the main resource, if it’s not the root and
+                ;; it’s not a non-empty container (those things are
+                ;; checked by update-path).
+                #f)))
+        load-content-type load-contained load-static-content do-create do-delete)))))
-- 
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