feat: implement entry management in Bibiman TUI

- Add `.devbox` to the `.gitignore` file
- Create a new backup file `devbox.json.back` with package and shell initialization configurations
- Introduce a new method `add_entry` in the Bibiman struct to manage adding entries
- Implement functionality to handle new entry submissions using `doi2bib`
- Update command actions to include `AddEntry`
- Add `AddEntry` as a new popup type in the TUI for creating entries
- Enhance the UI rendering to support the new entry popup with input fields and cursor positioning

3 files changed, 57 insertions, 0 deletions

diff --git a/src/tui/commands.rs b/src/tui/commands.rs
index a3049ee..626b11b 100644
--- a/src/tui/commands.rs
+++ b/src/tui/commands.rs
@@ -69,6 +69,8 @@ pub enum CmdAction {
     Exit,
     // Show keybindings
     ShowHelp,
+    // Add new entry
+    AddEntry,
     // Do nothing.
     Nothing,
 }
@@ -118,6 +120,8 @@ impl From<KeyEvent> for CmdAction {
             KeyCode::PageUp => Self::ScrollInfoUp,
             // Exit App
             KeyCode::Char('q') => Self::Exit,
+            // Add new entry
+            KeyCode::Char('a') => Self::AddEntry,
             KeyCode::Char('c') | KeyCode::Char('C') => {
                 if key_event.modifiers == KeyModifiers::CONTROL {
                     Self::Exit
diff --git a/src/tui/popup.rs b/src/tui/popup.rs
index 890e5c8..9b91801 100644
--- a/src/tui/popup.rs
+++ b/src/tui/popup.rs
@@ -29,6 +29,7 @@ pub enum PopupKind {
     MessageConfirm,
     MessageError,
     Selection,
+    AddEntry,
 }
 
 #[derive(Debug, Default)]
@@ -39,6 +40,8 @@ pub struct PopupArea {
     pub popup_scroll_pos: u16,
     pub popup_list: Vec<String>,
     pub popup_state: ListState,
+    pub add_entry_input: String,
+    pub add_entry_cursor_position: usize,
 }
 
 impl PopupArea {
@@ -48,6 +51,7 @@ impl PopupArea {
             ("TAB: ", "Toggle areas (Entries, Keywords)"),
             ("/|Ctrl+f: ", "Enter search mode"),
             ("q|Ctrl+c: ", "Quit bibiman"),
+            ("a: ", "Add new entry"),
             ("?: ", "Show help"),
             ("Entry Table", "sub"),
             ("j,k|↓,↑: ", "Select next/previous entry"),
diff --git a/src/tui/ui.rs b/src/tui/ui.rs
index cca87ce..8d7498a 100644
--- a/src/tui/ui.rs
+++ b/src/tui/ui.rs
@@ -181,6 +181,55 @@ pub fn render_popup(app: &mut App, args: &CLIArgs, frame: &mut Frame) {
             frame.render_widget(Clear, popup_area);
             frame.render_widget(par, popup_area)
         }
+
+        Some(PopupKind::AddEntry) => {
+            let area = frame.area();
+
+            let block = Block::bordered()
+                .title_top(" Add Entry ".bold())
+                .title_bottom(" (ESC) ━ (ENTER) ".bold())
+                .title_alignment(Alignment::Center)
+                .style(
+                    Style::new()
+                        .fg(Color::Indexed(args.colors.main_text_color))
+                        .bg(Color::Indexed(args.colors.popup_bg_color)),
+                )
+                .border_set(symbols::border::THICK)
+                .border_style(Style::new().fg(Color::Indexed(args.colors.entry_color)));
+
+            // Prepare the input fields
+            let content = vec![
+                Line::from(vec![Span::styled(
+                    "DOI: ",
+                    Style::new().fg(Color::Indexed(args.colors.entry_color)),
+                )]),
+                Line::from(app.bibiman.popup_area.add_entry_input.clone()),
+            ];
+            let paragraph = Paragraph::new(content)
+                .block(block.clone())
+                .style(Style::new().fg(Color::Indexed(args.colors.main_text_color)))
+                .wrap(Wrap { trim: false });
+
+            // Calculate popup size
+            let popup_width = area.width / 2;
+            let popup_height = 5; // Adjust as needed
+            let popup_area = popup_area(area, popup_width, popup_height);
+
+            // Render the popup
+            frame.render_widget(Clear, popup_area);
+            frame.render_widget(paragraph, popup_area);
+
+            // Set the cursor position
+            if app.input_mode {
+                // Calculate cursor x and y
+                let input_prefix_len = "Title: ".len() as u16 + 1; // +1 for padding
+                let cursor_x = popup_area.x
+                    + input_prefix_len
+                    + app.bibiman.popup_area.add_entry_cursor_position as u16;
+                let cursor_y = popup_area.y + 1; // Line after 'Title: '
+                frame.set_cursor_position(Position::new(cursor_x, cursor_y));
+            }
+        }
         Some(PopupKind::MessageConfirm) => {
             let area = frame.area();