edit locking

diff --git a/cards/edit_card.sh b/cards/edit_card.sh
new file mode 100755 (executable)
index 0000000..6b62395
--- /dev/null
+++ b/cards/edit_card.sh
@@ -0,0 +1,36 @@
+#!/bin/zsh
+
+# Copyright 2019 Paul Hänsch
+#
+# This file is part of Confetti.
+# 
+# Confetti is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# Confetti 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 Affero General Public License for more details.
+# 
+# You should have received a copy of the GNU Affero General Public License
+# along with Confetti.  If not, see <http://www.gnu.org/licenses/>. 
+
+mkdir -p "${_DATA}/lock"
+
+card="$(GET card)"
+lock="$_DATA/lock/${card}/"
+cardfile="$_DATA/vcard/$card"
+tempfile="$lock/temp.vcf"
+
+filter="$(REF f)"
+order="$(REF o)"
+
+if mkdir "$lock" 2>&-; then
+  cp "$cardfile" "$tempfile"
+  REDIRECT "/cards/?o=${order}&f=${filter}&e=${card}"
+else
+  SET_COOKIE session message="EDITLOCK"
+  REDIRECT "/cards/?o=${order}&f=${filter}#${card}"
+fi