1 files changed, 100 insertions, 20 deletions

diff --git a/src/args.rs b/src/args.rs
index fcf224c..52dddfc 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -1,12 +1,51 @@
 use std::path::PathBuf;
 
+/// Whether verbose debug output is enabled.
+/// Set by `DMVOPArguments::verbose`.
+pub static VERBOSE: std::sync::atomic::AtomicBool = std::sync::atomic::AtomicBool::new(false);
+
+/// Print a debug message only when `--verbose` is set.
+#[macro_export]
+macro_rules! debug_log {
+    ($($arg:tt)*) => {
+        if $crate::args::VERBOSE.load(std::sync::atomic::Ordering::Relaxed) {
+            eprintln!($($arg)*);
+        }
+    };
+}
+
 #[derive(clap::Parser)]
-#[command(
-    no_binary_name = true,
-    disable_help_flag = true,
-    disable_version_flag = true
-)]
+#[command(name = "dmvop", disable_help_flag = true, disable_version_flag = true)]
 pub struct DMVOPArguments {
+    // Verbose output (show debug messages)
+    #[arg(long = "verbose", short = 'V')]
+    pub verbose: bool,
+
+    // List all available input devices and exit
+    #[arg(long = "list-devices", alias = "list", short = 'L')]
+    pub list_devices: bool,
+
+    // List all available Whisper models and exit
+    #[arg(long = "list-models")]
+    pub list_models: bool,
+
+    // Download a specific Whisper model and exit
+    #[arg(long = "download-model", alias = "get-model", require_equals = true)]
+    pub download_model: Option<String>,
+
+    // Language hint for Whisper (e.g. en, zh, ja). Auto-detects if not set.
+    #[arg(long = "lang", require_equals = true)]
+    pub lang: Option<String>,
+
+    // Whisper model to use (e.g. tiny, base, small, medium, large-v3)
+    #[arg(
+        long = "model",
+        short = 'm',
+        default_value = "base_en",
+        require_equals = true
+    )]
+    pub model: String,
+
     // Devices (unix/linux device or WASAPI name)
     #[arg(
         long = "device",
@@ -14,7 +53,7 @@ pub struct DMVOPArguments {
         allow_hyphen_values = true,
         require_equals = true
     )]
-    device_name: String,
+    pub device_name: Option<String>,
 
     // Format
     // Use %{param} to represent a parameter
@@ -30,24 +69,25 @@ pub struct DMVOPArguments {
         default_value = "%{vol},%{word}",
         require_equals = true
     )]
-    format_pattern: Option<String>,
+    pub format_pattern: Option<String>,
+
+    #[arg(long = "format-file", short = 'S', require_equals = true)]
+    pub format_file: Option<PathBuf>,
 
+    // Output (can be specified multiple times)
     #[arg(
-        long = "format-file",
-        short = 'S',
-        alias = "fmt",
-        require_equals = true
+        long,
+        short = 'O',
+        require_equals = true,
+        default_value = "stdout",
+        num_args = 1
     )]
-    format_file: Option<PathBuf>,
-
-    // Output
-    #[arg(long, short = 'O', require_equals = true, default_value = "stdout")]
-    output: OutputMode,
+    pub output: Vec<OutputMode>,
 
     // MISC
     // Port (default: 5117)
     #[arg(long, short = 'p', default_value_t = 5117, require_equals = true)]
-    port: u16,
+    pub port: u16,
 
     // Socket file (default: ./dmvop.sock in current directory)
     #[arg(
@@ -56,7 +96,7 @@ pub struct DMVOPArguments {
         default_value = "./dmvop.sock",
         require_equals = true
     )]
-    socket_file: PathBuf,
+    pub socket_file: PathBuf,
 
     // Subnet mask for UDP broadcast (default: only last octet, e.g., "255.255.255.0")
     #[arg(
@@ -65,10 +105,10 @@ pub struct DMVOPArguments {
         default_value = "255.255.255.0",
         require_equals = true
     )]
-    subnet_mask: String,
+    pub subnet_mask: String,
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[allow(non_camel_case_types)]
 pub enum OutputMode {
     /// Establish a basic TCP service, broadcasting output to all connected sockets
@@ -103,3 +143,43 @@ impl std::str::FromStr for OutputMode {
         }
     }
 }
+
+/// Parse a format pattern string and produce a formatted output string
+/// from the provided values.
+///
+/// Supported placeholders:
+/// - `%{vol}` — volume 0–100
+/// - `%{word}` — transcribed word/text
+/// - `%{confid}` / `%{confidence}` — confidence score
+pub fn format_output(pattern: &str, word: &str, confidence: f32, volume: f32) -> String {
+    let mut result = pattern.to_string();
+
+    // Volume: clamp dB range (~-60 to 0) to 0–100 scale
+    // Typical speech is around -30 dB to -12 dB
+    let vol_normalized = ((volume + 60.0).clamp(0.0, 60.0) / 60.0 * 100.0) as u32;
+
+    // Replace known placeholders
+    result = result.replace("%{vol}", &vol_normalized.to_string());
+    result = result.replace("%{word}", word);
+    result = result.replace("%{confid}", &format!("{:.1}", confidence));
+    result = result.replace("%{confidence}", &format!("{:.1}", confidence));
+
+    result
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_format_output() {
+        let s = format_output("%{vol},%{word},%{confid}", "hello", 95.0, -12.0);
+        assert_eq!(s, "80,hello,95.0");
+    }
+
+    #[test]
+    fn test_format_output_no_volume() {
+        let s = format_output("text: %{word}", "world", 0.0, -60.0);
+        assert_eq!(s, "text: world");
+    }
+}