feat: include which occurence of a group a file is from

src/ttmp_extractor.rs

@@ -1,4 +1,5 @@
 use std::cell::RefCell;
+use std::collections::HashMap;
 use std::io::{Cursor, Read, Seek, SeekFrom, Write};
 
 use flate2::read::DeflateDecoder;
@@ -90,13 +91,18 @@ impl<R: Read + Seek> TtmpExtractor<R> {
     pub fn all_files_sorted(&self) -> Vec<ModFile> {
         let mut all_files = Vec::new();
 
+        let mut seen_groups: HashMap<&str, usize> = HashMap::new();
         if let Some(pages) = &self.manifest.mod_pack_pages {
             for page in pages {
                 for group in &page.mod_groups {
+                    let seen = seen_groups.entry(&group.group_name).or_default();
+                    *seen += 1;
+
                     for option in &group.option_list {
                         for file in &option.mods_jsons {
                             all_files.push(ModFile {
                                 group: Some(&*option.group_name),
+                                group_occurence: *seen,
                                 option: Some(&*option.name),
                                 file,
                             });
@@ -109,6 +115,7 @@ impl<R: Read + Seek> TtmpExtractor<R> {
         if let Some(list) = &self.manifest.simple_mods_list {
             all_files.extend(list.iter().map(|file| ModFile {
                 group: None,
+                group_occurence: 0,
                 option: None,
                 file,
             }));
@@ -414,6 +421,7 @@ impl<R: Read> TtmpExtractor<R> {
 #[derive(Debug)]
 pub struct ModFile<'a> {
     pub group: Option<&'a str>,
+    pub group_occurence: usize,
     pub option: Option<&'a str>,
     pub file: &'a SimpleMod,
 }