feat: origin filename support.

src/merge.rs

@@ -1,6 +1,6 @@
 use crate::audio_converter::convert_audio_to_aac;
 use crate::dry_run::{print_shell_script_header, ShellScript};
-use crate::file_finder::{find_audio_file, find_largest_video_file};
+use crate::file_finder::{find_audio_file, find_ass_file, find_largest_video_file, get_output_name_from_ass};
 use crate::video_merger::merge_video_and_audio;
 use std::io::Result;
 use std::path::Path;
@@ -34,13 +34,38 @@ pub fn merge_video_from_path(path: &Path, dry_run: bool, overwrite: bool) -> Res
         crate::dry_run::print_shell_script(&script);
     }
 
+    println!("Step 3: Looking for ASS subtitle file to determine output name...");
+    let output_name = match find_ass_file(path) {
+        Ok(ass_path) => {
+            println!("Found ASS file: {}", ass_path.display());
+            let name = get_output_name_from_ass(&ass_path);
+            println!("Output name will be: {}", name);
+            if dry_run {
+                let mut script = ShellScript::new();
+                script.add_variable("ASS_FILE", &ass_path);
+                script.add_variable_str("OUTPUT_NAME", &name);
+                crate::dry_run::print_shell_script(&script);
+            }
+            name
+        }
+        Err(_) => {
+            println!("No ASS file found, using video file name as output name");
+            let name = video_path.file_stem()
+                .and_then(|n| n.to_str())
+                .unwrap_or("output")
+                .to_string();
+            println!("Output name will be: {}", name);
+            name
+        }
+    };
+
     println!();
-    println!("Step 3: Converting audio to AAC format...");
+    println!("Step 4: Converting audio to AAC format...");
     let aac_path = convert_audio_to_aac(&audio_path, dry_run, overwrite)?;
     println!();
 
-    println!("Step 4: Merging video and audio...");
-    let output_path = merge_video_and_audio(&video_path, &aac_path, dry_run, overwrite)?;
+    println!("Step 5: Merging video and audio...");
+    let output_path = merge_video_and_audio(&video_path, &aac_path, &output_name, path, dry_run, overwrite)?;
 
     if dry_run {
         println!();