From 97caee37cc3da7ece3e9d5e7185b6129dc8386fb Mon Sep 17 00:00:00 2001
From: Stanislav Pastushenko <staspast1@gmail.com>
Date: Tue, 9 Dec 2025 18:46:12 +0100
Subject: [PATCH] export filtered results

---
 src/main.rs | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index 2c1e78e..03b159a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -132,6 +132,76 @@ impl LogViewerApp {
         }
     }
 
+    fn handle_export_filtered(&mut self) {
+        use std::fs::File;
+        use std::io::Write;
+        use std::time::SystemTime;
+
+        if let Some(tab) = self.active_tab() {
+            if tab.filtered_lines.is_empty() {
+                return;
+            }
+
+            // Generate timestamped filename
+            let original_path = &tab.file_path;
+            let file_stem = original_path
+                .file_stem()
+                .and_then(|s| s.to_str())
+                .unwrap_or("export");
+            let extension = original_path
+                .extension()
+                .and_then(|s| s.to_str())
+                .unwrap_or("log");
+
+            // Generate timestamp
+            let timestamp = SystemTime::now()
+                .duration_since(SystemTime::UNIX_EPOCH)
+                .unwrap()
+                .as_secs();
+
+            // Create new filename: filename_timestamp.extension
+            let export_filename = format!("{}_{}.{}", file_stem, timestamp, extension);
+            let export_path = original_path.with_file_name(export_filename);
+
+            // Write filtered lines to file
+            match File::create(&export_path) {
+                Ok(mut file) => {
+                    // Get the line index and file handle
+                    let line_index = Arc::clone(&tab.line_index);
+                    let file_path = tab.file_path.clone();
+
+                    // Open the original file for reading
+                    if let Ok(original_file) = File::open(&file_path) {
+                        let mut reader = std::io::BufReader::new(original_file);
+
+                        // Write each filtered line to the export file
+                        for filtered_line in &tab.filtered_lines {
+                            if let Some(content) = line_index.read_line(&mut reader, filtered_line.line_number) {
+                                writeln!(file, "{}", content).ok();
+                            }
+                        }
+
+                        // Open the exported file in a new tab
+                        if let Ok(line_index) = crate::line_index::LineIndex::build(&export_path) {
+                            if let Ok(exported_file) = File::open(&export_path) {
+                                let new_tab = crate::file_tab::FileTab::new(
+                                    export_path,
+                                    line_index,
+                                    exported_file,
+                                );
+                                self.tabs.push(new_tab);
+                                self.active_tab_index = self.tabs.len() - 1;
+                            }
+                        }
+                    }
+                }
+                Err(e) => {
+                    eprintln!("Failed to create export file: {}", e);
+                }
+            }
+        }
+    }
+
     fn handle_keyboard_input(&mut self, ctx: &egui::Context) {
         if let Some(tab) = self.active_tab_mut() {
             tab.page_scroll_direction = ctx.input(|i| {
@@ -239,6 +309,7 @@ impl eframe::App for LogViewerApp {
         let show_filtered = !self.search_panel_state.query.is_empty();
         let highlight_rules = self.highlight_manager.rules.clone();
 
+        let mut export_clicked = false;
         if show_filtered {
             if let Some(tab) = self.active_tab_mut() {
                 if !tab.filtered_lines.is_empty() {
@@ -270,6 +341,13 @@ impl eframe::App for LogViewerApp {
                                         .size(14.0)
                                         .color(palette.accent_bright);
                                     ui.label(count);
+
+                                    ui.add_space(16.0);
+
+                                    // Export button
+                                    if ui.button("📤 Export").clicked() {
+                                        export_clicked = true;
+                                    }
                                 });
                             });
 
@@ -288,6 +366,11 @@ impl eframe::App for LogViewerApp {
             }
         }
 
+        // Handle export after rendering the filtered view
+        if export_clicked {
+            self.handle_export_filtered();
+        }
+
         // Handle keyboard input
         self.handle_keyboard_input(ctx);