feat: add check-update and update commands

Author: FelixIsaac

README.md

@@ -103,6 +103,8 @@ claude-code-sync pull
 | `reset` | Delete all sync data (⚠️ deletes key!) |
 | `reset --keep-key` | Reset but preserve your private key |
 | `unlink` | Disconnect from remote repo (keep local data) |
+| `check-update` | Check if a new version is available |
+| `update` | Download and install latest version |
 | `help` | Show help |
 
 ## What Gets Synced

claude-code-sync

@@ -599,6 +599,66 @@ cmd_unlink() {
     fi
 }
 
+get_remote_version() {
+    local url="https://raw.githubusercontent.com/felixisaac/claude-code-sync/main/claude-code-sync"
+    local content
+    content=$(curl -fsSL --connect-timeout 10 "$url" 2>/dev/null) || return 1
+    echo "$content" | grep -oP 'VERSION="\K[^"]+' | head -1
+}
+
+cmd_check_update() {
+    log_info "Checking for updates..."
+
+    local remote_version
+    remote_version=$(get_remote_version)
+
+    if [[ -z "$remote_version" ]]; then
+        log_warn "Could not fetch remote version. Check your internet connection."
+        return
+    fi
+
+    echo "Local version:  v$VERSION"
+    echo "Remote version: v$remote_version"
+
+    if [[ "$VERSION" == "$remote_version" ]]; then
+        log_success "You're up to date!"
+    else
+        echo ""
+        echo -e "Update available! Run: ${BLUE}claude-code-sync update${NC}"
+    fi
+}
+
+cmd_update() {
+    log_info "Checking for updates..."
+
+    local remote_version
+    remote_version=$(get_remote_version)
+
+    if [[ -z "$remote_version" ]]; then
+        die "Could not fetch remote version. Check your internet connection."
+    fi
+
+    if [[ "$VERSION" == "$remote_version" ]]; then
+        log_success "Already up to date (v$VERSION)"
+        return
+    fi
+
+    log_info "Updating v$VERSION -> v$remote_version..."
+
+    # Find where we're installed
+    local script_path
+    script_path=$(command -v claude-code-sync 2>/dev/null || echo "$HOME/.local/bin/claude-code-sync")
+
+    # Download new version
+    local url="https://raw.githubusercontent.com/felixisaac/claude-code-sync/main/claude-code-sync"
+    if curl -fsSL "$url" -o "$script_path"; then
+        chmod +x "$script_path"
+        log_success "Updated to v$remote_version!"
+    else
+        die "Failed to download update"
+    fi
+}
+
 cmd_version() {
     echo "claude-code-sync v$VERSION"
 }
@@ -621,6 +681,8 @@ COMMANDS:
     reset              Delete all sync data (WARNING: deletes key!)
     reset --keep-key   Reset but preserve your private key
     unlink             Disconnect from remote repo (keep local data)
+    check-update       Check if a new version is available
+    update             Download and install latest version
     version            Show version
     help               Show this help
 
@@ -678,6 +740,8 @@ main() {
         reset)      cmd_reset "$@" ;;
         destroy)    cmd_reset "$@" ;;  # Alias for reset
         unlink)     cmd_unlink "$@" ;;
+        check-update) cmd_check_update ;;
+        update)     cmd_update ;;
         version|-v|--version) cmd_version ;;
         help|-h|--help) cmd_help ;;
         *)          die "Unknown command: $cmd. Run 'claude-code-sync help' for usage." ;;

claude-code-sync.ps1

@@ -615,6 +615,71 @@ function Invoke-Unlink {
     }
 }
 
+function Get-RemoteVersion {
+    try {
+        $url = "https://raw.githubusercontent.com/felixisaac/claude-code-sync/main/claude-code-sync.ps1"
+        $content = Invoke-WebRequest -Uri $url -UseBasicParsing -TimeoutSec 10
+        if ($content.Content -match '\$VERSION\s*=\s*"([^"]+)"') {
+            return $Matches[1]
+        }
+    } catch {
+        return $null
+    }
+    return $null
+}
+
+function Invoke-CheckUpdate {
+    Write-Info "Checking for updates..."
+    $remoteVersion = Get-RemoteVersion
+
+    if (-not $remoteVersion) {
+        Write-Warn "Could not fetch remote version. Check your internet connection."
+        return
+    }
+
+    Write-Host "Local version:  v$VERSION"
+    Write-Host "Remote version: v$remoteVersion"
+
+    if ($VERSION -eq $remoteVersion) {
+        Write-Success "You're up to date!"
+    } else {
+        Write-Host ""
+        Write-Host "Update available! Run: " -NoNewline
+        Write-Host "claude-code-sync update" -ForegroundColor Cyan
+    }
+}
+
+function Invoke-Update {
+    Write-Info "Checking for updates..."
+    $remoteVersion = Get-RemoteVersion
+
+    if (-not $remoteVersion) {
+        throw "Could not fetch remote version. Check your internet connection."
+    }
+
+    if ($VERSION -eq $remoteVersion) {
+        Write-Success "Already up to date (v$VERSION)"
+        return
+    }
+
+    Write-Info "Updating v$VERSION -> v$remoteVersion..."
+
+    # Find where we're installed
+    $scriptPath = $MyInvocation.ScriptName
+    if (-not $scriptPath) {
+        $scriptPath = Join-Path (Join-Path $env:USERPROFILE ".local\bin") "claude-code-sync.ps1"
+    }
+
+    # Download new version
+    $url = "https://raw.githubusercontent.com/felixisaac/claude-code-sync/main/claude-code-sync.ps1"
+    try {
+        Invoke-WebRequest -Uri $url -OutFile $scriptPath -UseBasicParsing
+        Write-Success "Updated to v$remoteVersion!"
+    } catch {
+        throw "Failed to download update: $_"
+    }
+}
+
 function Show-Version {
     Write-Host "claude-code-sync v$VERSION"
 }
@@ -637,6 +702,8 @@ COMMANDS:
     reset              Delete all sync data (WARNING: deletes key!)
     reset --keep-key   Reset but preserve your private key
     unlink             Disconnect from remote repo (keep local data)
+    check-update       Check if a new version is available
+    update             Download and install latest version
     version            Show version
     help               Show this help
 
@@ -674,6 +741,8 @@ switch ($Command.ToLower()) {
     }
     "destroy"    { Invoke-Reset }  # Alias for reset
     "unlink"     { Invoke-Unlink }
+    "check-update" { Invoke-CheckUpdate }
+    "update"     { Invoke-Update }
     "version"    { Show-Version }
     "-v"         { Show-Version }
     "--version"  { Show-Version }