From 68946ceede8f50824fa69e60a37d303243edd975 Mon Sep 17 00:00:00 2001
From: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>
Date: Sun, 6 Sep 2020 19:03:47 -0700
Subject: [PATCH] Add uninstall before installing to Windows installer

---
 package/Tautulli.nsi | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/package/Tautulli.nsi b/package/Tautulli.nsi
index 7f3464d7..aff53bd3 100644
--- a/package/Tautulli.nsi
+++ b/package/Tautulli.nsi
@@ -7,7 +7,7 @@
 !define APP_NAME "Tautulli"
 !define COMP_NAME "Tautulli"
 !define WEB_SITE "https://tautulli.com"
-!define COPYRIGHT "Tautulli © 2020"
+!define COPYRIGHT "Tautulli © 2020"
 !define DESCRIPTION "Monitor your Plex Media Server"
 !define APP_ICON "..\dist\Tautulli\data\interfaces\default\images\logo-circle.ico"
 !define LICENSE_TXT "..\dist\Tautulli\LICENSE"
@@ -116,6 +116,8 @@ Var /GLOBAL nolaunch
 ######################################################################
 
 Section -MainProgram
+Call UninstallPrevious
+
 ${INSTALL_TYPE}
 SetOverwrite ifnewer
 SetOutPath "$INSTDIR"
@@ -238,3 +240,17 @@ Function un.onInit
 FunctionEnd
 
 ######################################################################
+
+Function UninstallPrevious
+  ; Check for uninstaller.
+  ReadRegStr $R0 "${REG_ROOT}" "${UNINSTALL_PATH}" "UninstallString"
+  ${If} $R0 == ""
+    Goto Done
+  ${EndIf}
+  DetailPrint "Removing previous installation."
+  ; Run the uninstaller silently.
+  ExecWait '"$R0" /S _?=$INSTDIR'
+  Done:
+FunctionEnd
+
+######################################################################