Add --reinstall option to reinstall current version and show installation location when latest version is already installed

install-git-credential-manager.sh

@@ -91,7 +91,7 @@ get_arch() {
     esac
 }
 
-# Function to get current installed version
+# Function to get current installed version and location
 get_current_version() {
     if command_exists git-credential-manager; then
         # Extract version from output like "2.6.1+786ab03440ddc82e807a97c0e540f5247e44cec6"
@@ -102,10 +102,21 @@ get_current_version() {
         else
             CURRENT_VERSION="unknown"
         fi
+
+        # Determine installation location
+        GCM_PATH=$(which git-credential-manager)
+        if [[ "$GCM_PATH" == "$HOME/bin"* ]]; then
+            INSTALL_TYPE="user"
+        elif [[ "$GCM_PATH" == "/usr/local/bin"* ]] || [[ "$GCM_PATH" == "/usr/bin"* ]]; then
+            INSTALL_TYPE="system"
+        else
+            INSTALL_TYPE="other"
+        fi
     else
         CURRENT_VERSION="not_installed"
+        INSTALL_TYPE="none"
     fi
-    echo "$CURRENT_VERSION"
+    echo "$CURRENT_VERSION:$INSTALL_TYPE"
 }
 
 # Function to compare versions (returns 0 if first >= second, 1 if first < second)
@@ -167,25 +178,27 @@ get_latest_release() {
 
 # Function to check if update is needed
 check_update_needed() {
-    local current_version=$(get_current_version)
+    local current_info=$(get_current_version)
+    local current_version=$(echo "$current_info" | cut -d: -f1)
+    local install_type=$(echo "$current_info" | cut -d: -f2)
     local latest_version="$1"
-    
-    print_status "Current version: $current_version"
+
+    print_status "Current version: $current_version ($install_type)"
     print_status "Latest version: $latest_version"
-    
+
     if [[ "$current_version" == "not_installed" ]]; then
         print_status "git-credential-manager is not installed"
         return 0  # Need to install
     fi
-    
+
     if [[ "$current_version" == "unknown" ]]; then
         print_warning "Cannot determine current version, proceeding with update"
         return 0  # Assume update needed
     fi
-    
+
     if compare_versions "$latest_version" "$current_version"; then
         if [[ "$latest_version" == "$current_version" ]]; then
-            print_success "You already have the latest version ($current_version)"
+            print_success "You already have the latest version ($current_version) installed at $install_type location"
             if [[ "$force_reinstall" == "true" ]]; then
                 print_status "Force reinstall requested, proceeding..."
                 return 0
@@ -490,6 +503,7 @@ show_usage() {
     echo "  -h, --help     Show this help message"
     echo "  -v, --version  Install specific version (default: latest)"
     echo "  -f, --force    Force reinstall even if already installed"
+    echo "  -r, --reinstall Reinstall the current installed version"
     echo "  -p, --package  Force installation from package manager"
     echo "  -d, --deb      Force installation from DEB package"
     echo "  -t, --tarball  Force installation from tarball"
@@ -498,6 +512,7 @@ show_usage() {
     echo "Examples:"
     echo "  $0                    # Install latest version using best method"
     echo "  $0 -v v2.6.0         # Install specific version"
+    echo "  $0 --reinstall        # Reinstall current version"
     echo "  $0 --package          # Force installation from package manager"
     echo "  $0 --deb             # Force installation from DEB package"
     echo "  $0 --checks           # Check configuration without installing"
@@ -533,6 +548,7 @@ run_checks_only() {
 main() {
     local target_version=""
     local force_reinstall=false
+    local reinstall_current=false
     local install_method="auto"
     local checks_only=false
 
@@ -551,6 +567,10 @@ main() {
                 force_reinstall=true
                 shift
                 ;;
+            -r|--reinstall)
+                reinstall_current=true
+                shift
+                ;;
             -p|--package)
                 install_method="package"
                 shift
@@ -580,12 +600,25 @@ main() {
         run_checks_only
         exit 0
     fi
-    
+
     echo "========================================"
     echo "Git Credential Manager Installer"
     echo "========================================"
     echo
-    
+
+    # Handle reinstall current version
+    if [[ "$reinstall_current" == "true" ]]; then
+        local current_info=$(get_current_version)
+        local current_version=$(echo "$current_info" | cut -d: -f1)
+        if [[ "$current_version" == "not_installed" ]]; then
+            print_error "No current version installed to reinstall"
+            exit 1
+        fi
+        target_version="$current_version"
+        force_reinstall=true
+        print_status "Reinstalling current version: $target_version"
+    fi
+
     # Get latest version if not specified
     if [[ -z "$target_version" ]]; then
         get_latest_release