From db614dea52d06367e35073989425beda4c88a8ee Mon Sep 17 00:00:00 2001
From: Joe Groocock <me@frebib.net>
Date: Mon, 20 Aug 2018 11:41:01 +0100
Subject: [PATCH] Add back-compat for old config mountpoint

---
 entrypoint    | 39 ++++++++++++++++++++++++++++++++-------
 gen-config.sh |  5 +++--
 2 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/entrypoint b/entrypoint
index 781810d..7f83c77 100755
--- a/entrypoint
+++ b/entrypoint
@@ -3,29 +3,54 @@ set -e
 
 # ANSI colour escape sequences
 RED='\033[0;31m'
+CYANBOLD='\033[1;36m'
 RESET='\033[0m'
 
-if su-exec -e [ ! -w "/config" ]; then
+CONFIG_DIR="/config"
+OLD_CONFIG="/config/Plex Media Server"
+
+if [ -d "$OLD_CONFIG" ] && mountpoint -q "$OLD_CONFIG"; then
+    rm -rf /var/lib/plexmediaserver
+    ln -sf "$CONFIG_DIR" /var/lib/plexmediaserver
+
+    2>&1 echo -e "${RED}####################### NOTICE #######################${RESET}"
+    2>&1 echo
+    2>&1 echo -e "${RED}         The config mountpoint has changed!${RESET}"
+    2>&1 echo -e "${RED}        Please change the volume as follows:${RESET}"
+    2>&1 echo
+    2>&1 echo -e "${CYANBOLD}     '$OLD_CONFIG'${RESET} -> ${CYANBOLD}'$CONFIG_DIR'${RESET}"
+    2>&1 echo
+    2>&1 echo -e "${RED}######################################################${RESET}"
+    2>&1 echo
+
+    CONFIG_DIR="$OLD_CONFIG"
+fi
+
+if su-exec -e [ ! -w "$CONFIG_DIR" ]; then
     2>&1 echo -e "${RED}####################### WARNING #######################${RESET}"
     2>&1 echo
-    2>&1 echo -e "${RED}     No permission to write in '/config' directory.${RESET}"
+    2>&1 echo -e "${RED}     No permission to write in '$CONFIG_DIR' directory.${RESET}"
     2>&1 echo -e "${RED}       Correcting permissions to prevent a crash.${RESET}"
     2>&1 echo
     2>&1 echo -e "${RED}#######################################################${RESET}"
+    2>&1 echo
 
-    chown $SUID:$SGID /config
-    chmod o+rw /config
+    chown $SUID:$SGID "$CONFIG_DIR"
+    chmod o+rw "$CONFIG_DIR"
 fi
 
+export CONFIG_DIR
+export PREF_FILE="$CONFIG_DIR/Preferences.xml"
+
 exec su-exec -e sh <<EOF
 
 # Generate a default configuration on first run, including some user-specified values
-if [ ! -e "/config/Preferences.xml" ]; then
-    gen-config.sh
+if [ ! -e "\$PREF_FILE" ]; then
+    source gen-config.sh
 fi
 
 # Duplicate the Plex logs to stdout (docker logs)
-tail -Fn 0 "/config/Logs/Plex Media Server.log" 2>/dev/null &
+tail -Fn 0 "\$CONFIG_DIR/Logs/Plex Media Server.log" 2>/dev/null &
 
 # Use a random pidfile
 export PLEX_MEDIA_SERVER_PIDFILE="\$(mktemp -ut pms-pid.XXXXXX)"
diff --git a/gen-config.sh b/gen-config.sh
index 48046ae..86adfd8 100755
--- a/gen-config.sh
+++ b/gen-config.sh
@@ -1,7 +1,8 @@
 #!/bin/sh
 set -e
 
-PREF_FILE="${1:-/config/Preferences.xml}"
+CONFIG_DIR="${CONFIG_DIR:-/config}"
+PREF_FILE="${PREF_FILE:-"$CONFIG_DIR/Preferences.xml"}"
 
 getPref() {
     xmlstarlet sel -T -t -m "/Preferences" -v "@$1" -n "${PREF_FILE}"
@@ -16,7 +17,7 @@ setPref() {
 }
 
 # Create a default config file allowing external access
-echo -e $'<?xml version="1.0" encoding="utf-8"?>\n<Preferences />' > "/config/Preferences.xml"
+echo -e $'<?xml version="1.0" encoding="utf-8"?>\n<Preferences />' > "${PREF_FILE}"
 
 # Enforced defaults. These can be changed manually afterwards.
 setPref "AcceptedEULA" "1"