Skip installation when latest version already installed

static/install.ps1

@@ -38,6 +38,25 @@ function Get-Architecture {
     }
 }
 
+# Get the current installed version
+function Get-CurrentVersion {
+    try {
+        # Check if docfind is in PATH and can be executed
+        $currentVersionOutput = & $BinaryName --version 2>&1
+        if ($LASTEXITCODE -eq 0 -and $currentVersionOutput) {
+            # Extract version from "docfind X.Y.Z" output
+            $versionMatch = $currentVersionOutput -match "^$BinaryName\s+(.+)$"
+            if ($versionMatch -and $Matches[1]) {
+                return $Matches[1].Trim()
+            }
+        }
+    }
+    catch {
+        # Binary not found or not executable
+    }
+    return $null
+}
+
 # Get the latest release version
 function Get-LatestVersion {
     Write-Info "Fetching latest release..."
@@ -218,6 +237,22 @@ function Main {
     Write-Info "Detected platform: $target"
 
     $version = Get-LatestVersion
+
+    # Check if already installed with the same version
+    $currentVersion = Get-CurrentVersion
+    if ($currentVersion) {
+        Write-Info "Current version: $currentVersion"
+        # Strip 'v' prefix from version if present for comparison
+        $latestVersionNum = $version -replace '^v', ''
+        if ($currentVersion -eq $latestVersionNum -or $currentVersion -eq $version) {
+            Write-Info "$BinaryName $currentVersion is already installed (latest version)"
+            Write-Host ""
+            Write-Host "If you want to reinstall, please uninstall first:" -ForegroundColor Cyan
+            Write-Host "  Remove-Item (Get-Command $BinaryName).Path" -ForegroundColor Green
+            exit 0
+        }
+    }
+
     Install-Binary -Version $version -Target $target
 
     $pathUpdated = $false

static/install.sh

@@ -62,6 +62,17 @@ detect_platform() {
     info "Detected platform: $TARGET"
 }
 
+# Get the current installed version
+get_current_version() {
+    if command -v "$BINARY_NAME" >/dev/null 2>&1; then
+        # Extract version from "docfind X.Y.Z" output
+        CURRENT_VERSION=$("$BINARY_NAME" --version 2>/dev/null | sed -E 's/^[^ ]+ //')
+        if [ -n "$CURRENT_VERSION" ]; then
+            echo "$CURRENT_VERSION"
+        fi
+    fi
+}
+
 # Get the latest release version
 get_latest_version() {
     info "Fetching latest release..."
@@ -184,6 +195,22 @@ main() {
 
     detect_platform
     get_latest_version
+
+    # Check if already installed with the same version
+    CURRENT_VERSION=$(get_current_version)
+    if [ -n "$CURRENT_VERSION" ]; then
+        info "Current version: $CURRENT_VERSION"
+        # Strip 'v' prefix from VERSION if present for comparison
+        LATEST_VERSION_NUM=$(echo "$VERSION" | sed 's/^v//')
+        if [ "$CURRENT_VERSION" = "$LATEST_VERSION_NUM" ] || [ "$CURRENT_VERSION" = "$VERSION" ]; then
+            info "$BINARY_NAME $CURRENT_VERSION is already installed (latest version)"
+            echo ""
+            echo "If you want to reinstall, please uninstall first:"
+            echo "  ${GREEN}rm \$(which $BINARY_NAME)${NC}"
+            exit 0
+        fi
+    fi
+
     install_binary
     post_install
 }