From 7369dace2c2584b0302b79eaf15f1945a9dc6e20 Mon Sep 17 00:00:00 2001
From: lukeflo
Date: Sat, 5 Oct 2024 23:33:55 +0200
Subject: refine search mechanism, filter tag list for available entries

---
 src/frontend/keywords.rs | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

(limited to 'src/frontend/keywords.rs')

diff --git a/src/frontend/keywords.rs b/src/frontend/keywords.rs
index cb0c28f..311366a 100644
--- a/src/frontend/keywords.rs
+++ b/src/frontend/keywords.rs
@@ -88,7 +88,31 @@ impl App {
         self.tag_list = TagList::from_iter(filtered_list)
     }
 
-    // Filter the entry list by tags
+    pub fn filter_tags_by_entries(&mut self) {
+        if !self.search_struct.filtered_entry_list.is_empty() {
+            let orig_list = &self.search_struct.filtered_entry_list;
+            let mut filtered_keywords: Vec<String> = Vec::new();
+
+            for e in orig_list {
+                if !e[4].is_empty() {
+                    let mut key_vec: Vec<String> = e[4]
+                        .split(',')
+                        .map(|s| s.trim().to_string())
+                        .filter(|s| !s.is_empty())
+                        .collect();
+                    filtered_keywords.append(&mut key_vec);
+                }
+            }
+
+            filtered_keywords.sort_by(|a, b| a.to_lowercase().cmp(&b.to_lowercase()));
+            filtered_keywords.dedup();
+
+            self.search_struct.filtered_tag_list = filtered_keywords.clone();
+            self.tag_list = TagList::from_iter(filtered_keywords);
+        }
+    }
+
+    // Filter the entry list by tags when hitting enter
     // If already inside a filtered tag or entry list, apply the filtering
     // to the already filtered list only
     pub fn filter_for_tags(&mut self) {
@@ -105,6 +129,7 @@ impl App {
         let filtered_list = BibiSearch::filter_entries_by_tag(&keyword, &orig_list);
         self.search_struct.filtered_entry_list = filtered_list;
         self.entry_table = EntryTable::from_iter(self.search_struct.filtered_entry_list.clone());
+        self.filter_tags_by_entries();
         self.toggle_area();
         self.former_area = Some(FormerArea::TagArea);
     }
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