UI evolution

** Re-evaluating need for users to edit list of hosts at runtime **

Cargo.lock

@@ -709,7 +709,7 @@ dependencies = [
 
 [[package]]
 name = "pp"
-version = "0.2.1"
+version = "0.2.2-PREVIEW"
 dependencies = [
  "ansi_term",
  "chrono",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pp"
-version = "0.2.1"
+version = "0.2.2-PREVIEW"
 edition = "2024"
 
 [dependencies]

src/tui/mod.rs

@@ -1,5 +1,4 @@
 pub mod mode_editing;
-pub mod mode_exiting;
 pub mod mode_monitoring;
 pub mod ratatui_app;
 pub mod target_state_widget;

src/tui/mode_adding.rs

@@ -8,7 +8,6 @@ use ratatui::widgets::{Block, Paragraph};
 use crate::tui::ratatui_screens::RatatuiScreens::Monitoring;
 
 pub struct RatatuiAddingMode {}
-
 impl RatatuiAddingMode {
     pub fn render(frame: &mut Frame, state: &mut RatatuiApp) {
         frame.render_widget(
@@ -17,7 +16,6 @@ impl RatatuiAddingMode {
                 .centered(),
             frame.area()
         );
-
     }
 
     pub fn handle_crossterm_events(app: &mut RatatuiApp) -> Result<()> {

src/tui/mode_deleting.rs

@@ -14,7 +14,14 @@ pub struct RatatuiDeletingMode {}
 impl RatatuiDeletingMode {
     pub fn render(frame: &mut Frame, state: &mut RatatuiApp) {
         let title = Line::from("Delete Host").bold().red().centered();
-        let mut body = format!("Do you really want to delete {} (Y/N)", state.selected_host);
+        let as_list = state.state.clone();
+        let mut nice_status = None;
+        for (index, (label, data)) in as_list.iter().enumerate() {
+            if index == state.selected_host {
+                nice_status = Some(data);
+            }
+        }
+        let mut body = format!("Do you really want to delete {} (Y/N)", nice_status.unwrap().name);
 
         frame.render_widget(
             Paragraph::new(body)
@@ -29,7 +36,13 @@ impl RatatuiDeletingMode {
             match event::read()? {
                 Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
                     KeyCode::Enter | KeyCode::Char('y') | KeyCode::Char('Y') => {
-
+                        let as_list = &app.state.clone();
+                        for (index, (label, _)) in as_list.iter().enumerate() {
+                            if index == app.selected_host {
+                                app.state.remove(label).unwrap();
+                                app.set_screen(Monitoring)
+                            }
+                        }
                     }
                     KeyCode::Esc | KeyCode::Char('n') | KeyCode::Char('N') => {
                         app.set_screen(Monitoring)

src/tui/mode_exiting.rs

@@ -1,43 +0,0 @@
-use std::time::Duration;
-use crossterm::event;
-use crossterm::event::{Event, KeyCode, KeyEventKind};
-use ratatui::Frame;
-use ratatui::style::Stylize;
-use ratatui::text::Line;
-use ratatui::widgets::{Block, Paragraph};
-use crate::tui::ratatui_app::RatatuiApp;
-use color_eyre::Result;
-use crate::tui::ratatui_screens::RatatuiScreens::Monitoring;
-
-pub struct RatatuiExitingMode {}
-
-impl RatatuiExitingMode {
-    pub fn render(frame: &mut Frame) {
-        let title = Line::from("Exit?").bold().red().centered();
-        let mut body = "Do you want to exit? (Y/N)";
-        frame.render_widget(
-            Paragraph::new(body)
-                .block(Block::bordered().title(title))
-                .centered(),
-            frame.area(),
-        );
-    }
-
-    pub fn handle_crossterm_events(app: &mut RatatuiApp) -> Result<()>{
-        if event::poll(Duration::from_millis(100))? {
-            match event::read()? {
-                Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
-                    KeyCode::Enter  | KeyCode::Char('y') | KeyCode::Char('Y') => {
-                        app.set_running(false);
-                    }
-                    KeyCode::Char('n') | KeyCode::Char('N') => {
-                        app.set_screen(Monitoring);
-                    }
-                    _ => {}
-                },
-                _ => {}
-            }
-        }
-        Ok(())
-    }
-}

src/tui/mode_monitoring.rs

@@ -1,57 +1,37 @@
 use crate::duration_to_string;
+use crate::target_state::TargetState;
+use crate::tui::ratatui_app::RatatuiApp;
 use color_eyre::Result;
 use crossterm::event;
 use crossterm::event::{Event, KeyCode, KeyEventKind};
-use ratatui::prelude::*;
-use ratatui::widgets::{Block, Borders, Cell, List, ListItem, ListState, Paragraph, Row, Table, TableState};
 use ratatui::Frame;
+use ratatui::layout::Flex;
+use ratatui::prelude::*;
+use ratatui::widgets::{
+    Block, Borders, Cell, Clear, List, ListItem, Paragraph, Row, Table, TableState,
+};
 use std::time::{Duration, SystemTime};
-use crate::tui::ratatui_app::RatatuiApp;
-use crate::tui::ratatui_screens::RatatuiScreens::{Deleting, Editing, Exiting};
 
 pub struct RatatuiMonitoringMode {}
 
 impl RatatuiMonitoringMode {
-    pub fn render(frame: &mut Frame, state: &mut RatatuiApp) {
-        let layouts = Layout::default()
-            .direction(Direction::Vertical)
-            .constraints([
-                Constraint::Fill(1),
-                Constraint::Length(10),
-                Constraint::Length(3),
-            ])
-            .split(frame.area());
-
-        let body_layout = layouts[0];
-        let logs_layout = layouts[1];
-        let footer_layout = layouts[2];
-        //
-        // let title = Line::from(format!("PP v{}", env!("CARGO_PKG_VERSION")))
-        //     .bold()
-        //     .blue()
-        //     .centered();
-        // let table_size = layouts[0].area();
-        // let columns = Layout::default()
-        //     .direction(Vertical)
-        //     .constraints([Constraint::Min(30),
-        //         Constraint::Min(6),
-        //         Constraint::Min(4),
-        //         Constraint::Min(30)]);
-
-        let headers = ["Host", "Alive", "RTT", "Last Change"]
+    fn render_hosts_list(frame: &mut Frame, state: &mut RatatuiApp, area: Rect) {
+        // Headers
+        let headers = ["Host", "RTT", "Last Change"]
             .iter()
             .map(|h| Cell::from(*h));
         let header = Row::new(headers)
-            .style(Style::default().fg(Color::Yellow))
+            .style(Style::default().fg(Color::Yellow).bold())
             .bottom_margin(1);
+
+        // Rows
         let mut rows = vec![];
 
         for (_, current) in state.state.iter() {
-            let mut name_field = format!("{} ({})", current.name.clone(), current.target.clone());
-
-            while name_field.len() < 40 {
-                name_field.push(' ');
-            }
+            let name_field = format!(
+                "{:<40}",
+                format!("{} ({})", current.name.clone(), current.target.clone())
+            );
 
             let name_style = if current.alive {
                 Style::default().fg(Color::Green)
@@ -59,36 +39,39 @@ impl RatatuiMonitoringMode {
                 Style::default().fg(Color::Red)
             };
 
-            let to_push = vec![
+            rows.push(Row::new(vec![
                 Cell::from(name_field).style(name_style),
-                Cell::from(current.alive.to_string()),
                 Cell::from(current.last_rtt.to_string()),
-                Cell::from(
-                    format!("{} ago.",
+                Cell::from(format!(
+                    "{} ago.",
                     duration_to_string(
                         SystemTime::now()
                             .duration_since(current.last_alive_change)
                             .unwrap()
                     )
-                    )
-                )
-            ];
-
-            rows.push(Row::new(to_push));
+                )),
+            ]));
         }
 
-        let table = Table::new(rows, vec![Constraint::Min(30), Constraint::Min(6), Constraint::Min(5), Constraint::Min(30)])
-            .header(header)
-            .block(Block::default()
-                .title(Line::from(format!("PP v{}", env!("CARGO_PKG_VERSION"))))
-                .borders(Borders::ALL))
-            .widths(&[
+        // Table Builder
+        let table = Table::new(rows, vec![
             Constraint::Min(30),
             Constraint::Min(6),
-                Constraint::Min(4),
-                Constraint::Min(30)
+            Constraint::Min(5),
+            Constraint::Min(30),
         ])
-            .highlight_style(
+        .header(header)
+        .block(
+            Block::default()
+                .title(Line::from(format!("PP v{}", env!("CARGO_PKG_VERSION"))))
+                .borders(Borders::ALL),
+        )
+        .widths(&[
+            Constraint::Fill(2), // Host
+            Constraint::Min(4),  // RTT
+            Constraint::Min(30), // TIme Since
+        ])
+        .row_highlight_style(
             Style::default()
                 .bg(Color::Blue)
                 .fg(Color::White)
@@ -97,69 +80,207 @@ impl RatatuiMonitoringMode {
         .highlight_symbol(">> ");
 
         // frame.render_widget(table, layouts[0]);
-        frame.render_stateful_widget(table, layouts[0], &mut make_state(state.selected_host));
-
-        // let footer_text = "Press <ESC> or q to exit";
-        let footer_text = format!("Press <ESC> or q to exit | Press d to delete host | Press a to add host - ({:?})", state.filename);
-
-        let mut list_items = vec![];
-        for entry in state.get_log_entries(10) {
-            list_items.push(ListItem::new(entry));
+        frame.render_stateful_widget(table, area, &mut make_hosts_list_state(state.selected_host));
     }
 
-        let list = List::new(list_items)
+    fn render_logs(frame: &mut Frame, state: &mut RatatuiApp, logs_layout: Rect) {
+        let list_items: Vec<ListItem> = state
+            .get_log_entries(10)
+            .iter()
+            .map(|entry| ListItem::new(entry.clone()))
+            .collect();
+
+        // Log
+        frame.render_widget(
+            List::new(list_items)
                 .block(Block::default().title("Logs").borders(Borders::ALL))
                 .highlight_style(
                     Style::default()
                         .fg(Color::Yellow)
                         .add_modifier(Modifier::BOLD),
+                ),
+            logs_layout,
         );
-       //     .highlight_symbol(">> ");
-
-        let mut list_state = ListState::default();
-        list_state.select(Some(0));
-
-        frame.render_stateful_widget(list, logs_layout, &mut list_state);
+    }
 
+    fn render_footer_block(frame: &mut Frame, footer_layout: Rect) {
         frame.render_widget(
-            Paragraph::new(footer_text)
+            Paragraph::new(
+                "Press <ESC> or q to exit | Press d to delete host | Press a to add host",
+            )
             .block(Block::bordered())
             .centered(),
             footer_layout,
         );
     }
+    pub fn render(frame: &mut Frame, state: &mut RatatuiApp) {
+        let layouts = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([
+                Constraint::Fill(1),    // Top Bar
+                Constraint::Length(10), // Hosts
+                Constraint::Length(3),  // Logs
+            ])
+            .split(frame.area());
 
-    pub fn handle_crossterm_events(app: &mut RatatuiApp) -> Result<()> {
-        if event::poll(Duration::from_millis(100))? {
-            match event::read()? {
-                Event::Key(key) if key.kind == KeyEventKind::Press => {
-                    match (key.modifiers, key.code) {
-                        (_, KeyCode::Down) => {
+        Self::render_hosts_list(frame, state, layouts[0]);
+        Self::render_logs(frame, state, layouts[1]);
+        Self::render_footer_block(frame, layouts[2]);
+
+        Self::add_popup(frame, state);
+        Self::exit_popup(frame, state);
+        Self::delete_popup(frame, state);
+    }
+
+    fn add_popup(frame: &mut Frame, state: &RatatuiApp) {
+        if state.showing_add_popup {
+            let area = RatatuiMonitoringMode::popup_area(frame.area(), 10, 40);
+
+            frame.render_widget(Clear, area);
+
+            frame.render_widget(
+                Paragraph::new(format!("Host Address : {}", state.add_host_name))
+                    .block(Block::bordered().title("Label")),
+                area,
+            );
+        }
+    }
+
+    fn exit_popup(frame: &mut Frame, state: &RatatuiApp) {
+        if state.trying_to_exit {
+            let area = RatatuiMonitoringMode::popup_area(frame.area(), 5, 20);
+
+            frame.render_widget(Clear, area);
+            frame.render_widget(
+                Paragraph::new("Are you sure? (Y/N)").block(Block::bordered().title("Exit")),
+                area,
+            );
+        }
+    }
+
+    fn delete_popup(frame: &mut Frame, state: &RatatuiApp) {
+        if state.trying_to_delete {
+            let as_list = state.state.clone();
+            let mut host_name = String::new();
+            for (index, (label, _)) in as_list.iter().enumerate() {
+                if index == state.selected_host {
+                    host_name = label.clone();
+                }
+            }
+            let block = Paragraph::new(format!("Delete {}", host_name))
+                .centered()
+                .block(Block::bordered());
+
+            frame.render_widget(block, frame.area());
+        }
+    }
+
+    fn popup_area(area: Rect, percent_x: u16, percent_y: u16) -> Rect {
+        let vertical = Layout::vertical([Constraint::Percentage(percent_x)]).flex(Flex::Center);
+        let horizontal = Layout::horizontal([Constraint::Percentage(percent_y)]).flex(Flex::Center);
+        let [area] = vertical.areas(area);
+        let [area] = horizontal.areas(area);
+        area
+    }
+
+    fn handle_add_popup_inputs(app: &mut RatatuiApp, key: KeyCode) {
+        match key {
+            KeyCode::Esc => {
+                app.showing_add_popup = false;
+            }
+            KeyCode::Backspace => {
+                app.add_host_name.remove(app.add_host_name.len() - 1);
+            }
+            KeyCode::Enter => {
+                app.state.insert(app.add_host_name.clone(), TargetState {
+                    name: app.add_host_name.clone(),
+                    ..Default::default()
+                });
+            }
+            KeyCode::Down => {
+                dbg!("Move down to next field");
+            }
+            KeyCode::Up => {
+                dbg!("Move up to previous field");
+            }
+            _ => {
+                app.add_host_name = format!("{}{}", app.add_host_name, key);
+                //dbg!(format!("ADD_HOST_NAME: {}", app.add_host_name.clone()));
+            }
+        }
+    }
+
+    fn handle_exit_popup_inputs(app: &mut RatatuiApp, key: KeyCode) {
+        match key {
+            KeyCode::Char('y') | KeyCode::Char('Y') => {
+                app.set_running(false);
+            }
+            KeyCode::Char('n') | KeyCode::Char('N') => {
+                app.trying_to_exit = false;
+            }
+            _ => {}
+        }
+    }
+
+    fn handle_monitoring_screen_inputs(app: &mut RatatuiApp, key: KeyCode) {
+        // Default monitoring Screen
+        match key {
+            KeyCode::Down => {
                 if app.selected_host + 1 == app.state.len() {
                     app.selected_host = 0;
                 } else {
                     app.selected_host += 1;
                 }
             }
-                        (_, KeyCode::Up) => {
+            KeyCode::Up => {
                 if app.selected_host == 0 {
                     app.selected_host = app.state.len() - 1;
                 } else {
                     app.selected_host -= 1;
                 }
             }
-                        (_, KeyCode::Esc) | (_, KeyCode::Char('q')) | (_, KeyCode::Char('Q')) => {
-                            app.set_screen(Exiting);
+            KeyCode::Esc | KeyCode::Char('q') | KeyCode::Char('Q') => {
+                app.trying_to_exit = true;
             }
-                        (_, KeyCode::Char('e')) | (_, KeyCode::Char('E')) => {
-                            app.set_screen(Editing);
+            KeyCode::Char('a') | KeyCode::Char('A') => {
+                app.showing_add_popup = true;
             }
-                        (_, KeyCode::Char('d')) | (_, KeyCode::Char('D')) => {
-                            app.set_screen(Deleting);
+            KeyCode::Char('d') | KeyCode::Char('D') => {
+                app.trying_to_delete = true;
             }
             _ => {}
         }
     }
+
+    fn handle_delete_popup_inputs(app: &mut RatatuiApp, key: KeyCode) {
+        match key {
+            KeyCode::Char('y') | KeyCode::Char('Y') => {
+                app.remove_selected_host();
+                app.trying_to_delete = false;
+            }
+            KeyCode::Char('n') | KeyCode::Char('N') => {
+                dbg!("Do not delete this item.");
+                app.trying_to_delete = false;
+            }
+            _ => {}
+        }
+    }
+
+    pub fn handle_crossterm_events(app: &mut RatatuiApp) -> Result<()> {
+        if event::poll(Duration::from_millis(100))? {
+            match event::read()? {
+                Event::Key(key) if key.kind == KeyEventKind::Press => {
+                    // adding mode
+                    if app.showing_add_popup {
+                        Self::handle_add_popup_inputs(app, key.code);
+                    } else if app.trying_to_exit {
+                        Self::handle_exit_popup_inputs(app, key.code);
+                    } else if app.trying_to_delete {
+                        Self::handle_delete_popup_inputs(app, key.code);
+                    } else {
+                        Self::handle_monitoring_screen_inputs(app, key.code);
+                    }
+                }
                 _ => {}
             }
         }
@@ -167,7 +288,7 @@ impl RatatuiMonitoringMode {
     }
 }
 
-pub fn make_state(selected: usize) -> TableState {
+pub fn make_hosts_list_state(selected: usize) -> TableState {
     let mut state = TableState::default();
     state.select(Some(selected));
     state

src/tui/ratatui_app.rs

@@ -1,9 +1,14 @@
-use crate::tui::ratatui_screens::RatatuiScreens;
 use crate::manager::Manager;
 use crate::ping_result::PingResult;
 use crate::target_state::TargetState;
+use crate::tui::mode_adding::RatatuiAddingMode;
+use crate::tui::mode_deleting::RatatuiDeletingMode;
+use crate::tui::mode_editing::RatatuiEditingMode;
+use crate::tui::mode_monitoring::RatatuiMonitoringMode;
+use crate::tui::ratatui_screens::RatatuiScreens;
 use chrono::{DateTime, Local};
 use color_eyre::Result;
+use log::debug;
 use ratatui::prelude::*;
 use ratatui::{DefaultTerminal, Frame};
 use std::collections::BTreeMap;
@@ -15,14 +20,8 @@ use std::sync::mpsc;
 use std::sync::mpsc::Receiver;
 use std::thread;
 use std::time::{Duration, SystemTime};
-use log::debug;
-use crate::tui::mode_adding::RatatuiAddingMode;
-use crate::tui::mode_deleting::RatatuiDeletingMode;
-use crate::tui::mode_editing::RatatuiEditingMode;
-use crate::tui::mode_exiting::RatatuiExitingMode;
-use crate::tui::mode_monitoring::RatatuiMonitoringMode;
-
 
+const LOG_ENTRIES_DEFAULT_COUNT: u32 = 10;
 
 #[derive(Default)]
 pub struct RatatuiApp {
@@ -30,12 +29,39 @@ pub struct RatatuiApp {
     pub state: BTreeMap<String, TargetState>,
     current_screen: RatatuiScreens,
     log_entries: Vec<String>,
-    pub(crate) filename: Option<String>,
-    pub selected_host: usize
+    filename: Option<String>,
+    pub selected_host: usize,
+    pub showing_add_popup: bool,
+    pub trying_to_exit: bool,
+    pub trying_to_delete: bool,
+    pub add_host_cursor_position: usize,
+    pub add_host_name: String,
+    pub num_log_entries: u32
 }
 
 /// Private Methods
 impl RatatuiApp {
+    pub fn remove_selected_host(self: &mut RatatuiApp) {
+        for (index, (name, data)) in self.state.clone().iter().enumerate() {
+            if index == self.selected_host {
+                self.state.remove(name).unwrap();
+            }
+        }
+    }
+
+    pub fn set_filename(mut self, new_filename: String) {
+        self.filename = Some(new_filename)
+    }
+
+    pub fn get_filename(self) -> String {
+        self.filename.unwrap_or(String::new())
+    }
+
+    pub fn add_new_host(mut self, new_target: TargetState) -> Result<()> {
+        self.state.insert(new_target.name.clone(), new_target);
+        Ok(())
+    }
+
     pub fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
         self.running = true;
         // start the 'manager' thread that spawns its ping threads as needed
@@ -45,32 +71,9 @@ impl RatatuiApp {
             // check for any waiting ping results...
             self.consume_waiting_results(&receiver);
 
-            match self.current_screen {
-                RatatuiScreens::Deleting => {
-                    terminal
-                        .draw(|frame| RatatuiDeletingMode::render(frame, &mut self))?;
-                    RatatuiDeletingMode::handle_crossterm_events(&mut self)?
-
-                }
-                RatatuiScreens::Monitoring => {
-                    terminal
-                        .draw(|frame| RatatuiMonitoringMode::render(frame, &mut self))?;
+            terminal.draw(|frame| RatatuiMonitoringMode::render(frame, &mut self))?;
             RatatuiMonitoringMode::handle_crossterm_events(&mut self)?;
         }
-                RatatuiScreens::Exiting => {
-                    terminal.draw(|frame| RatatuiExitingMode::render(frame))?;
-                    RatatuiExitingMode::handle_crossterm_events(&mut self)?;
-                }
-                RatatuiScreens::Editing => {
-                    terminal.draw(|frame| RatatuiEditingMode::render(frame, &mut self.state))?;
-                    RatatuiEditingMode::handle_crossterm_events(&mut self)?;
-                }
-                RatatuiScreens::Adding => {
-                    terminal.draw(|frame| RatatuiAddingMode::render(frame, &mut self))?;
-                    RatatuiAddingMode::handle_crossterm_events(&mut self)?
-                }
-            }
-        }
         Ok(())
     }
 
@@ -94,6 +97,7 @@ impl RatatuiApp {
                         alive: new_message.success,
                         last_rtt: new_message.rtt,
                         last_alive_change,
+                        ..TargetState::default()
                     };
                     local_state.insert(name.clone(), new_state.clone());
                     let success_message = if new_state.alive {
@@ -106,8 +110,8 @@ impl RatatuiApp {
 
                     if did_change {
                         self.log_entries.push(format!(
-                            "{:?} {} for {}",
-                            current_time.format("%Y-%m-%d %H:%M:%S: ").to_string(),
+                            "{} {} for {}",
+                            current_time.format("%Y-%m-%d %H:%M:%S:").to_string(),
                             success_message,
                             new_state.name.clone()
                         ));
@@ -127,13 +131,7 @@ impl RatatuiApp {
     }
 
     fn render(&mut self, frame: &mut Frame) {
-        match self.current_screen {
-            RatatuiScreens::Monitoring => RatatuiMonitoringMode::render(frame, self),
-            RatatuiScreens::Exiting => RatatuiExitingMode::render(frame),
-            RatatuiScreens::Editing => RatatuiEditingMode::render(frame, &mut self.state),
-            RatatuiScreens::Deleting => RatatuiDeletingMode::render(frame,self),
-            RatatuiScreens::Adding => RatatuiAddingMode::render(frame, self)
-        }
+        RatatuiMonitoringMode::render(frame, self)
     }
 
     fn quit(&mut self) {
@@ -143,29 +141,36 @@ impl RatatuiApp {
     fn get_default_targets() -> BTreeMap<String, TargetState> {
         let mut working = BTreeMap::new();
 
-        working.insert("1111 DNS".to_string(), TargetState {
+        working.insert(
+            "1111 DNS".to_string(),
+            TargetState {
                 name: "1111 DNS".to_string(),
                 target: Ipv4Addr::new(1, 1, 1, 1),
                 ..TargetState::default()
-        });
-        working.insert("Google DNS".to_string(), TargetState {
+            },
+        );
+        working.insert(
+            "Google DNS".to_string(),
+            TargetState {
                 name: "Google DNS".to_string(),
                 target: Ipv4Addr::new(8, 8, 8, 8),
                 ..TargetState::default()
-        });
-        working.insert("Test Site 1".to_string(), TargetState {
+            },
+        );
+        working.insert(
+            "Test Site 1".to_string(),
+            TargetState {
                 name: "Test Site 1".to_string(),
                 target: Ipv4Addr::new(216, 234, 202, 122),
                 ..TargetState::default()
-        });
+            },
+        );
         working
     }
 }
 
-
 /// Public Methods
 impl RatatuiApp {
-
     fn load_hosts_from_file(file_to_load_from: PathBuf) -> BTreeMap<String, TargetState> {
         let mut working = BTreeMap::new();
 
@@ -173,13 +178,14 @@ impl RatatuiApp {
         let mut rdr = csv::Reader::from_reader(the_file.unwrap());
         for result in rdr.records() {
             let record = result.unwrap();
-            working.insert(record[1].to_string(), TargetState {
+            working.insert(
+                record[1].to_string(),
+                TargetState {
                     name: record[1].to_string(),
                     target: Ipv4Addr::from_str(&record[0]).unwrap(),
-                alive: false,
-                last_alive_change: SystemTime::now(),
-                last_rtt: 0
-            });
+                    ..TargetState::default()
+                },
+            );
         }
 
         working
@@ -192,17 +198,17 @@ impl RatatuiApp {
                 working.filename = Some(file.as_os_str().to_string_lossy().parse().unwrap());
             } else {
                 // working.log_event("Passed file doesnt exist looking for hosts.txt".to_string());
-                if !&PathBuf::from_str("hosts.txt").unwrap().exists() {
-                    // working.log_event("Didnt find hosts.txt".to_string());
-                    working.filename = None;
-                } else {
+                if PathBuf::from_str("hosts.txt").unwrap().exists() {
                     // working.log_event("Found hosts.txt.  using it as the default".to_string());
                     working.filename = Some("hosts.txt".to_string());
+                } else {
+                    // working.log_event("Didnt find hosts.txt".to_string());
+                    working.filename = None;
                 }
             }
 
             if let Some(file) = working.filename.clone() {
-                RatatuiApp::load_hosts_from_file(PathBuf::from_str(&*working.filename.clone().unwrap()).unwrap())
+                RatatuiApp::load_hosts_from_file(PathBuf::from_str(file.as_str()).unwrap())
             } else {
                 RatatuiApp::get_default_targets()
             }
@@ -211,7 +217,9 @@ impl RatatuiApp {
             working.filename = Some("hosts.txt".to_string());
             if let Some(ref hosts_file) = working.filename {
                 if PathBuf::from_str(hosts_file).unwrap().exists() {
-                    RatatuiApp::load_hosts_from_file(PathBuf::from_str(&*hosts_file.clone()).unwrap())
+                    RatatuiApp::load_hosts_from_file(
+                        PathBuf::from_str(&*hosts_file.clone()).unwrap(),
+                    )
                 } else {
                     working.filename = None;
                     RatatuiApp::get_default_targets()
@@ -221,6 +229,7 @@ impl RatatuiApp {
             }
         };
         working.state = targets.clone();
+        working.num_log_entries = LOG_ENTRIES_DEFAULT_COUNT;
         working
     }
 
@@ -240,11 +249,11 @@ impl RatatuiApp {
     }
 
     pub fn get_log_entries(&self, how_many: u32) -> Vec<String> {
-        let mut return_value = vec![];
-        for current in self.log_entries.clone().into_iter().rev() {
-            return_value.push(current);
-        }
-        return_value
-
+        self.log_entries
+            .iter()
+            .rev()
+            .take(how_many as usize)
+            .cloned()
+            .collect()
     }
 }

src/tui/ratatui_screens.rs

@@ -3,7 +3,6 @@
 pub enum RatatuiScreens {
     #[default]
     Monitoring,
-    Exiting,
     Editing,
     Deleting,
     Adding