simplify readme and make a force flag for local overrides

README.md

@@ -9,7 +9,9 @@ Generate markdown documentation from directory structure.
 - Full file contents with syntax-highlighted code blocks
 - Filters dotfiles, binaries, and blacklisted extensions
 - Append mode for single files or directories
+- Force overwrite of existing output files
 - Configurable depth, file size limits, ignore patterns
+- Optional upload to Proton Drive after generating output
 
 ## Build
 
@@ -19,36 +21,78 @@ Generate markdown documentation from directory structure.
 
     # Create new documentation
     dirmd -o output.md ~/repos/myproject
-    
+
+    # Overwrite existing output file
+    dirmd -o output.md ~/repos/myproject -f
+
     # Append a single file
     dirmd -a -i README.md -o existing.md
-    
+
     # Append another directory
     dirmd -a ~/repos/anotherproject -o existing.md
 
+    # Generate and upload to Proton Drive (default: /my-files/md/<filename>)
+    dirmd -o output.md ~/repos/myproject --proton-drive
+
+    # Generate and upload to a specific remote path
+    dirmd -o output.md ~/repos/myproject --proton-drive --drive-path /my-files/docs/api.md
+
 ## Flags
 
 | Flag | Description | Default |
 |------|-------------|---------|
 | `-o`, `--output` | Output markdown file path (required) | |
 | `-a`, `--append` | Append to existing output file | false |
+| `-f`, `--force` | Overwrite existing output file (non-append mode) | false |
 | `-i`, `--input-file` | Single file input (append mode only) | |
 | `--max-size` | Max file size in bytes | 524288 |
 | `--max-depth` | Max directory recursion depth | 20 |
 | `--ignore` | Additional ignore patterns (glob) | |
 | `--extensions` | Additional file extensions to skip | |
+| `--proton-drive` | Upload output to Proton Drive after writing locally | false |
+| `--drive-path` | Full remote path on Proton Drive (e.g. /my-files/md/report.md) | /my-files/md/&lt;filename&gt; |
+
+## Proton Drive Integration
+
+dirmd can optionally upload the generated markdown file to Proton Drive using the [Proton Drive CLI](https://proton.me/support/drive-cli). The upload is performed only when `--proton-drive` is passed. Without it, dirmd behaves exactly as before — no Proton Drive dependency is required.
+
+### Prerequisites
+
+1. Install the Proton Drive CLI — see the [official guide](https://proton.me/support/drive-cli) for download and installation instructions.
+2. Authenticate by running `proton-drive auth login`.
+3. Ensure `proton-drive` is in your `PATH`.
+
+If the CLI is not installed or you are not logged in, dirmd will report the error to stderr and exit with a non-zero code. The local markdown file is still written successfully before the upload is attempted.
+
+### Upload Behavior
+
+- Default remote path: `/my-files/md/<filename>` where `<filename>` is the basename of the local output file.
+- Override with `--drive-path /my-files/custom/report.md` (full path including filename).
+- Existing remote files are overwritten (`--conflict-strategy replace`).
+- The local markdown file is always written before the upload is attempted.
+
+For full documentation on the Proton Drive CLI, including installation, authentication, and troubleshooting, refer to the [official Proton Drive CLI support page](https://proton.me/support/drive-cli).
 
 ## Examples
 
     # Custom depth and size limit
     dirmd -o output.md ~/repos/project --max-depth 5 --max-size 262144
-    
+
     # Ignore specific directories
     dirmd -o output.md ~/repos/project --ignore __pycache__ --ignore .venv
-    
+
     # Skip additional file extensions
     dirmd -o output.md ~/repos/project --extensions .log --extensions .tmp
 
+    # Generate, then upload to default remote location
+    dirmd -o docs.md ~/repos/project --proton-drive
+
+    # Generate, then upload to a custom remote location
+    dirmd -o docs.md ~/repos/project --proton-drive --drive-path /my-files/projects/docs.md
+
+    # Overwrite existing local file and upload to Drive
+    dirmd -o docs.md ~/repos/project -f --proton-drive
+
 ## Output Format
 
 Produces markdown with:
@@ -61,22 +105,22 @@ Produces markdown with:
 Example output structure:
 
     # /home/user/repos/myproject
-    
+
     ## Directory Tree
-    
+
     myproject/
     ├── cmd/
     │   └── main.go
     └── internal/
         └── config.go
-    
+
     ## Contents
-    
+
     ### ./cmd/main.go
-    
+
     ```go
     package main
-    
+
     func main() {}
     ```
 

cmd/root.go

@@ -19,7 +19,7 @@ var (
 		Short: "Generate markdown documentation from directory structure",
 		Long: `dirmd walks a directory and generates a markdown file with:
 
-- Directory tree structure  
+- Directory tree structure
 - All readable text files with their contents
 
 Examples:
@@ -27,12 +27,15 @@ Examples:
   # Create new documentation
   dirmd -o output.md ~/repos/myproject
 
-  # Append a single file  
+  # Append a single file
   dirmd -a -i README.md -o existing.md
 
   # Append another directory
   dirmd -a -o existing.md ~/repos/anotherproject
 
+  # Overwrite existing local file
+  dirmd -o output.md ~/repos/myproject -f
+
   # Generate and upload to Proton Drive (default remote path /my-files/md/<filename>)
   dirmd -o output.md ~/repos/myproject --proton-drive
 
@@ -43,6 +46,7 @@ Examples:
 
 	outputPath     string
 	appendMode     bool
+	force          bool
 	singleFile     string
 	maxSize        int64
 	maxDepth       int
@@ -61,6 +65,7 @@ func Execute() {
 func init() {
 	rootCmd.PersistentFlags().StringVarP(&outputPath, "output", "o", "", "output markdown file path (required)")
 	rootCmd.Flags().BoolVarP(&appendMode, "append", "a", false, "append to existing output file")
+	rootCmd.Flags().BoolVarP(&force, "force", "f", false, "overwrite existing output file (non-append mode)")
 	rootCmd.Flags().StringVarP(&singleFile, "input-file", "i", "", "single file input (append mode only)")
 	rootCmd.Flags().Int64Var(&maxSize, "max-size", config.DefaultMaxSize, "max file size in bytes")
 	rootCmd.Flags().IntVar(&maxDepth, "max-depth", config.DefaultMaxDepth, "max directory recursion depth")
@@ -80,6 +85,7 @@ func run(cmd *cobra.Command, args []string) error {
 	cfg := &config.Config{
 		OutputPath:  outputPath,
 		AppendMode:  appendMode,
+		Force:       force,
 		MaxSize:     maxSize,
 		MaxDepth:    maxDepth,
 		Ignores:     append(config.DefaultIgnores, ignorePatterns...),
@@ -107,10 +113,10 @@ func run(cmd *cobra.Command, args []string) error {
 	}
 	cfg.AbsRoot = abs
 
-	// Non-append mode: output must not exist
+	// Non-append mode: check for existing output file
 	if !appendMode {
-		if _, err := os.Stat(outputPath); err == nil {
+		if _, err := os.Stat(outputPath); err == nil && !force {
-			return fmt.Errorf("output file %s already exists (use -a to append)", outputPath)
+			return fmt.Errorf("output file %s already exists (use -f to overwrite or -a to append)", outputPath)
 		}
 	}
 
@@ -132,7 +138,7 @@ func run(cmd *cobra.Command, args []string) error {
 	if protonDrive {
 		remotePath := drivePath
 		if remotePath == "" {
-			remotePath = "/my-files/md/" + filepath.Base(outputPath)
+			remotePath = "/my/files/md/" + filepath.Base(outputPath)
 		}
 
 		if err := drive.CheckAuth(); err != nil {

internal/config/config.go

@@ -56,6 +56,7 @@ type Config struct {
 	InputPath   string
 	OutputPath  string
 	AppendMode  bool
+	Force       bool
 	SingleFile  bool
 	MaxSize     int64
 	MaxDepth    int
@@ -79,6 +80,7 @@ func Parse() (*Config, error) {
 		input       string
 		output      string
 		appendMd    bool
+		force       bool
 		maxSize     int64
 		maxDepth    int
 		ignores     stringSlice
@@ -91,6 +93,7 @@ func Parse() (*Config, error) {
 	flag.StringVar(&input, "i", "", "single file input (append mode only)")
 	flag.StringVar(&output, "o", "", "output markdown file path (required)")
 	flag.BoolVar(&appendMd, "a", false, "append to existing output file")
+	flag.BoolVar(&force, "f", false, "overwrite existing output file (non-append mode)")
 	flag.Int64Var(&maxSize, "max-size", DefaultMaxSize, "max file size in bytes")
 	flag.IntVar(&maxDepth, "max-depth", DefaultMaxDepth, "max directory recursion depth")
 	flag.Var(&ignores, "ignore", "additional ignore patterns (glob, repeatable)")
@@ -118,6 +121,7 @@ func Parse() (*Config, error) {
 	cfg := &Config{
 		OutputPath:  output,
 		AppendMode:  appendMd,
+		Force:       force,
 		MaxSize:     maxSize,
 		MaxDepth:    maxDepth,
 		Ignores:     append(DefaultIgnores, ignores...),
@@ -147,8 +151,8 @@ func Parse() (*Config, error) {
 	cfg.AbsRoot = abs
 
 	if !appendMd {
-		if _, err := os.Stat(output); err == nil {
+		if _, err := os.Stat(output); err == nil && !force {
-			return nil, fmt.Errorf("output file %s already exists (use -a to append)", output)
+			return nil, fmt.Errorf("output file %s already exists (use -f to overwrite or -a to append)", output)
 		}
 	}