Detect subtitle language from the old filename

src/functions.rs

@@ -6,7 +6,7 @@ use std::{collections::HashMap, fs, path::Path, process::exit};
 use tmdb::{model::*, themoviedb::*};
 use torrent_name_parser::Metadata;
 
-use crate::structs::{Language, MovieEntry};
+use crate::structs::{get_long_lang, Language, MovieEntry};
 
 // Get the version from Cargo.toml
 const VERSION: &str = env!("CARGO_PKG_VERSION");
@@ -89,12 +89,22 @@ pub fn process_file(
     // Handle the case for subtitle files
     let mut is_subtitle = false;
     if ["srt", "ssa"].contains(&extension.as_str()) {
-        let lang_list = Language::generate_list();
-        let lang_choice = Select::new("Choose the language for the subtitle file:", lang_list)
-            .prompt()
-            .expect("Invalid choice!");
-        if lang_choice.short != "none".to_string() {
-            extension = format!("{}.{}", lang_choice.short, extension);
+        // Try to detect if there's already language info in the filename, else ask user to choose
+        let filename_parts: Vec<&str> = filename.rsplit(".").collect();
+        if filename_parts.len() >= 3 && filename_parts[1].len() == 2 {
+            println!(
+                "Keeping language {} as detected in the subtitle file's extension...",
+                get_long_lang(filename_parts[1])
+            );
+            extension = format!("{}.{}", filename_parts[1], extension);
+        } else {
+            let lang_list = Language::generate_list();
+            let lang_choice = Select::new("Choose the language for the subtitle file:", lang_list)
+                .prompt()
+                .expect("Invalid choice!");
+            if lang_choice.short != "none".to_string() {
+                extension = format!("{}.{}", lang_choice.short, extension);
+            }
         }
         is_subtitle = true;
     }

src/main.rs

@@ -38,7 +38,8 @@ fn main() {
 
     // Iterate over entries
     for entry in entries {
-        // Check if the file/directory exists on disk
+        // Check if the file/directory exists on disk and run necessary commands
+        // TODO: Detect subtitle files with same name/metadata and process them automatically without repeated input
         match settings["directory"] {
             // Normal file
             false => {

src/structs.rs

@@ -80,7 +80,7 @@ impl fmt::Display for Language {
 }
 
 // Get long name of a language
-fn get_long_lang(short: &str) -> String {
+pub fn get_long_lang(short: &str) -> String {
     let long = match short {
         "en" => "English",
         "hi" => "Hindi",