feat: create default config on first run

Co-authored-by: aider (gemini/gemini-2.5-pro-preview-05-06) <aider@aider.chat>

config.toml

@@ -0,0 +1,7 @@
+# Default configuration for jamdl
+# Please edit these values to match your setup.
+
+nas_host = "localhost"
+nas_user = "your_ssh_user"
+nas_path = "/path/on/nas"
+cookies_file = "/path/to/your/apple-music-cookies-file.txt"

src/main.rs

@@ -2,7 +2,7 @@ use anyhow::{Context, Result};
 use clap::Parser;
 use serde::Deserialize;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use std::process::Command;
 use tempfile::TempDir;
 
@@ -25,15 +25,24 @@ struct Args {
 fn main() -> Result<()> {
     let args = Args::parse();
 
-    let config_path = dirs::config_dir()
+    let config_dir = dirs::config_dir()
         .context("Could not find config directory")?
-        .join("jamdl/config.toml");
+        .join("jamdl");
+    let config_path = config_dir.join("config.toml");
 
     if !config_path.exists() {
-        anyhow::bail!(
-            "Config file not found. Please create it at: {}",
+        println!("[INFO] No config file found, creating a default one...");
+        fs::create_dir_all(&config_dir).context("Failed to create config directory")?;
+
+        let default_config = include_str!("../config.toml");
+        fs::write(&config_path, default_config).context("Failed to write default config file")?;
+
+        println!(
+            "[INFO] A default config file was created at: {}",
             config_path.display()
         );
+        println!("[INFO] Please edit this file with your settings and re-run the command.");
+        return Ok(());
     }
 
     let settings = config::Config::builder()