From eaa60f129d9db8dd1121bafa8a750d465fd4c0f4 Mon Sep 17 00:00:00 2001
From: Michael Herrmann <michael@herrmann.io>
Date: Mon, 4 Mar 2019 17:34:18 +0100
Subject: [PATCH] Implement Uninstaller for Windows

---
 Makefile                | 17 ++++++----
 windows/Uninstaller.nsi | 72 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+), 6 deletions(-)
 create mode 100644 windows/Uninstaller.nsi

diff --git a/Makefile b/Makefile
index eacc836..023be15 100644
--- a/Makefile
+++ b/Makefile
@@ -66,17 +66,22 @@ launcher-windows: build-windows
 	powershell -Command "(gc ${GEN_SRC_DIR}\launcher\versioninfo.json) -creplace 'YEAR', (Get-Date -UFormat '%Y') | Out-File -Encoding default ${GEN_SRC_DIR}\launcher\versioninfo.json"
 	copy aminal.ico "${GEN_SRC_DIR}\launcher" /Y
 	go generate "${GEN_SRC_DIR}\launcher"
-	if exist "bin\windows\launcher" rmdir /S /Q "bin\windows\launcher"
-	mkdir "bin\windows\launcher\Versions\${VERSION}"
-	go build -o "bin\windows\launcher\${BINARY}.exe" -ldflags "-H windowsgui" "${GEN_SRC_DIR}\launcher"
-	copy ${BINARY}-windows-amd64.exe "bin\windows\launcher\Versions\${VERSION}\${BINARY}.exe" /Y
+	if exist "bin\windows\Aminal" rmdir /S /Q "bin\windows\Aminal"
+	mkdir "bin\windows\Aminal\Versions\${VERSION}"
+	go build -o "bin\windows\Aminal\${BINARY}.exe" -ldflags "-H windowsgui" "${GEN_SRC_DIR}\launcher"
+	copy ${BINARY}-windows-amd64.exe "bin\windows\Aminal\Versions\${VERSION}\${BINARY}.exe" /Y
+
+.PHONY: uninstaller-windows
+uninstaller-windows: launcher-windows
+	makensis "/XOutFile bin/windows/UninstallerSetup.exe" /NOCD windows\Uninstaller.nsi
+	cmd /c "bin\windows\UninstallerSetup.exe /S /D=%cd%\bin\windows\Aminal"
 
 .PHONY: installer-windows
-installer-windows:
+installer-windows: uninstaller-windows
 	if exist "${GEN_SRC_DIR}\installer" rmdir /S /Q "${GEN_SRC_DIR}\installer"
 	xcopy "windows\installer\*.*" "${GEN_SRC_DIR}\installer" /K /H /Y /Q /I
 	powershell -Command "(gc ${GEN_SRC_DIR}\installer\installer.go) -creplace 'VERSION', '${VERSION}' | Out-File -Encoding default ${GEN_SRC_DIR}\installer\installer.go"
-	go-bindata -prefix "bin\windows\launcher" -o "${GEN_SRC_DIR}/installer/data/data.go" "./bin/windows/launcher/..."
+	go-bindata -prefix "bin\windows\Aminal" -o "${GEN_SRC_DIR}/installer/data/data.go" "./bin/windows/Aminal/..."
 	powershell -Command "(gc ${GEN_SRC_DIR}\installer\data\data.go) -creplace 'package main', 'package data' | Out-File -Encoding default ${GEN_SRC_DIR}\installer\data\data.go"
 	go build -o bin/windows/AminalSetup.exe -ldflags "-H windowsgui" "${GEN_SRC_DIR}/installer/installer.go"
 	rem If an .exe name contains "installer", "setup" etc., then at least Windows 10 automatically
diff --git a/windows/Uninstaller.nsi b/windows/Uninstaller.nsi
new file mode 100644
index 0000000..c6a2688
--- /dev/null
+++ b/windows/Uninstaller.nsi
@@ -0,0 +1,72 @@
+!include MUI2.nsh
+
+;--------------------------------
+;Perform Machine-level install, if possible
+
+!define MULTIUSER_EXECUTIONLEVEL Highest
+;Add support for command-line args that let uninstaller know whether to
+;uninstall machine- or user installation:
+!define MULTIUSER_INSTALLMODE_COMMANDLINE
+!include MultiUser.nsh
+!include LogicLib.nsh
+
+Function .onInit
+  !insertmacro MULTIUSER_INIT
+FunctionEnd
+
+Function un.onInit
+  !insertmacro MULTIUSER_UNINIT
+FunctionEnd
+
+;--------------------------------
+;General
+
+  Name "Aminal"
+
+;--------------------------------
+;Pages
+
+  !insertmacro MUI_UNPAGE_CONFIRM
+  !insertmacro MUI_UNPAGE_INSTFILES
+
+;--------------------------------
+;Languages
+
+  !insertmacro MUI_LANGUAGE "English"
+
+;--------------------------------
+;Installer Sections
+
+Section
+  SetOutPath "$InstDir"
+  WriteUninstaller "$InstDir\uninstall.exe"
+SectionEnd
+
+;--------------------------------
+;Uninstaller Section
+
+!define UNINST_KEY \
+  "Software\Microsoft\Windows\CurrentVersion\Uninstall\Aminal"
+!define ROOT_KEY "Software\Aminal"
+!define UPDATE_KEY \
+  "${ROOT_KEY}\Update\Clients\{35B0CF1E-FBB0-486F-A1DA-BE3A41DDC780}"
+
+Section "Uninstall"
+
+  RMDir /r "$InstDir\Versions"
+  Delete "$InstDir\Aminal.exe"
+  Delete "$InstDir\uninstall.exe"
+  ;Omaha leaves this directory behind. Delete if empty:
+  RMDir "$InstDir\CrashReports"
+  RMDir "$InstDir"
+  Delete "$SMPROGRAMS\Aminal.lnk"
+  DeleteRegKey SHCTX "${UNINST_KEY}"
+  DeleteRegKey SHCTX "${UPDATE_KEY}"
+  DeleteRegKey /ifempty SHCTX "${ROOT_KEY}\Update\Clients"
+  ;Try to speed up uninstall of Omaha:
+  DeleteRegValue SHCTX "${ROOT_KEY}\Update" "LastChecked"
+  DeleteRegKey /ifempty SHCTX "${ROOT_KEY}\Update"
+  WriteRegStr SHCTX "${ROOT_KEY}" "" ""
+  DeleteRegKey /ifempty SHCTX "${ROOT_KEY}"
+
+SectionEnd
\ No newline at end of file