From 6cd151d24948a9862d615ca25c59ee64a9ded799 Mon Sep 17 00:00:00 2001
From: Dan Bungert <daniel.bungert@canonical.com>
Date: Mon, 21 Aug 2023 11:34:58 -0600
Subject: [PATCH] scripts: add bind-patch.sh

scripts/bind-patch.sh is useful for modifying the snap in the live
environment, for quickly testing changes or for things that are too
obscure to test in other ways.
---
 scripts/bind-patch.sh | 45 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100755 scripts/bind-patch.sh

diff --git a/scripts/bind-patch.sh b/scripts/bind-patch.sh
new file mode 100755
index 00000000..c4d2312d
--- /dev/null
+++ b/scripts/bind-patch.sh
@@ -0,0 +1,45 @@
+#!/bin/bash -eux
+
+# modify an existing subiquity-like snap in the live environment.
+# change this script down below to add bindpatch call(s) and run it in the live
+# environment.
+
+if [ "$(id -u)" != "0" ] ; then
+    echo "root required"
+    exit 1
+fi
+
+if [ -d "/snap/subiquity" ] ; then
+    SNAPNAME=subiquity
+    INTERMEDIATE=lib/python3.10/site-packages
+elif [ -d "/snap/ubuntu-desktop-installer" ] ; then
+    SNAPNAME=ubuntu-desktop-installer
+    INTERMEDIATE=bin/subiquity
+else
+    echo "subiquity-like snap not found"
+    exit 1
+fi
+
+SNAP="/snap/$SNAPNAME/current"
+
+function bindpatch
+{
+    input="$1"
+    shift
+    [ "$#" = "0" ] && set -- "vi"
+    tmp_file=/tmp/$(echo "$input" | sed 's,/,_,g')
+    cp "$SNAP/$INTERMEDIATE/$input" "$tmp_file"
+    "$@" "$tmp_file"
+    mount --bind "$tmp_file" "$SNAP/$INTERMEDIATE/$input"
+}
+
+echo "modify the script to configure a call to bindpatch"
+exit 1
+
+# example 1: edit subiquity/server/server.py with vi
+# bindpatch subiquity/server/server.py
+
+# example 2: run command foo on the file
+# bindpatch path/to/file.py foo
+
+snap restart "$SNAPNAME"