commented out glue code that isn't public build ready

displays a preset list of hosts and their response state

Updates format of input file to CSV with <host ip>,<host name> as the format.
UI now has red/green for down/up hosts
duration_to_string now in lib
improves display of how long ago change happened
log events are now displayed on the monitoring page to show when a host comes up/goes down
Modularize ui better
Adds ability to return to monitoring or quit from editing page
table in place for displaying hosts

WIP: start of being able to go up/down through the list of hosts to eventually edit them.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pp"
-version = "0.1.1"
+version = "0.2.0"
 edition = "2024"
 
 [dependencies]
@@ -10,8 +10,12 @@ ansi_term = "0.12"
 clap = { version = "4.5", features = ["derive"] }
 csv = "1.3"
 
-[[bin]]
-name = "duration_to_string"
+# Ratatui
+color-eyre = "0.6.3"
+crossterm = "0.28.1"
+ratatui = "0.29.0"
 
+# Time Display
+chrono = "0.4"
 [[bin]]
 name = "pp"

belleville.txt

@@ -1,3 +1,4 @@
+address,name
 10.3.100.1,Belleville Router
 10.11.31.3,Belleville VPN 11-31
 10.12.32.1,Belleville VPN 12-32

lindsay.txt

@@ -1,3 +1,4 @@
+address,name
 10.3.100.1,Belleville Router
 10.11.31.3,Belleville VPN 11-31
 10.12.32.1,Belleville VPN 12-32

peterborough.txt

@@ -1,14 +1,16 @@
-10.3.100.1,Belleville Router
+address,name
+10.3.100.1,Belleville Gateway
 10.11.31.3,Belleville VPN 11-31
 10.12.32.1,Belleville VPN 12-32
+192.186.110.6,Belleville Cogeco
+129.222.197.36,Belleville Starlink
+10.2.100.1,Lindsay Gateway
+24.143.184.98,Lindsay Cogeco
+192.168.1.50,Lindsay Sign
 10.11.21.1,Lindsay VPN 11-21
 10.12.22.1,Lindsay VPN 11-22
 8.8.8.8,Google DNS
 1.1.1.1,1111 DNS
+192.168.0.1,Peterborough Gateway
 24.51.235.162,Peterborough Cogeco
 99.214.0.92,Peterborough Rogers
-216.234.202.122,Lindsay Starlink
-24.143.184.98,Lindsay Cogeco
-192.186.110.6,Belleville Cogeco
-129.222.197.36,Belleville Starlink
-192.168.0.50,Sign

src/app_settings.rs

@@ -0,0 +1,10 @@
+use std::path::PathBuf;
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct AppSettings {
+    /// File of list of hosts
+    #[arg(short, long)]
+    pub ping_host_file: Option<PathBuf>,
+}

src/bin/duration_to_string.rs

@@ -1,41 +0,0 @@
-use std::time::Duration;
-
-pub fn duration_to_string(to_convert: Duration) -> String {
-    let mut total_seconds = to_convert.as_secs();
-    let mut working_string = String::new();
-
-    if total_seconds > 86400 {
-        // days
-        let num_days = total_seconds / 86400;
-        working_string = format!("{} days", num_days);
-        total_seconds = total_seconds - (num_days * 86400);
-    }
-
-    if total_seconds > 3600 {
-        // hours
-        let num_hours = total_seconds / 3600;
-        if num_hours > 0 {
-            working_string = format!("{} {} hours", working_string, num_hours);
-            total_seconds = total_seconds - (num_hours * 3600);
-        }
-    }
-    if total_seconds > 60 {
-        let num_minutes = total_seconds / 60;
-        if num_minutes > 0 {
-            working_string = format!("{} {} minutes", working_string, num_minutes);
-            total_seconds = total_seconds - (num_minutes * 60);
-        }
-        // minutes
-    }
-
-
-    working_string = format!("{} {} seconds.", working_string, total_seconds);
-
-    working_string
-}
-fn main() {
-    println!("1m 12s => {}", duration_to_string(Duration::from_secs(72)));
-    println!("1h 1m 12s => {}", duration_to_string(Duration::from_secs(3672)));
-    println!("1d 1h 1m 12s => {}", duration_to_string(Duration::from_secs(90072)));
-    println!("30d 1h 1m 12s => {}", duration_to_string(Duration::from_secs(2595672)));
-}

src/bin/pp.rs

@@ -14,8 +14,54 @@ use pp::manager::Manager;
 use pp::SECONDS_BETWEEN_DISPLAY;
 use pp::target_state::TargetState;
 use std::{env, error::Error, ffi::OsString, process};
+use color_eyre::owo_colors::OwoColorize;
+use crossterm::style::Stylize;
+use log::debug;
+use pp::app_settings::AppSettings;
 
-fn get_default_targets() -> BTreeMap<String, TargetState> {
+const SECONDS_IN_MINUTE: u32 = 60;
+const SECONDS_IN_HOUR: u32 = SECONDS_IN_MINUTE * 60;
+const SECONDS_IN_DAY: u32 = SECONDS_IN_HOUR * 24;
+
+pub fn duration_to_string(to_convert: Duration) -> String {
+    let mut total_seconds = to_convert.as_secs() as u32;
+    let mut working_string = String::new();
+
+    if total_seconds > 86400 {
+        // days
+        let num_days = (total_seconds / SECONDS_IN_DAY) as u32;
+        working_string = format!("{} days", num_days);
+        total_seconds = total_seconds - (num_days * SECONDS_IN_DAY);
+    }
+
+    if total_seconds > 3600 {
+        // hours
+        let num_hours = (total_seconds / SECONDS_IN_HOUR) as u32;
+        if num_hours > 0 {
+            working_string = format!("{} {} hours", working_string, num_hours);
+            total_seconds = total_seconds - (num_hours * SECONDS_IN_HOUR);
+        }
+    }
+    if total_seconds > 60 {
+        let num_minutes = (total_seconds / SECONDS_IN_MINUTE) as u32;
+        if num_minutes > 0 {
+            working_string = format!("{} {} minutes", working_string, num_minutes);
+            total_seconds = total_seconds - (num_minutes * SECONDS_IN_MINUTE);
+        }
+        // minutes
+    }
+
+
+    working_string = format!("{} {} seconds", working_string, total_seconds);
+
+    working_string
+}
+
+
+struct PPState {}
+
+impl PPState {
+    pub fn get_default_targets() -> BTreeMap<String, TargetState> {
         let mut working = BTreeMap::new();
         working.insert("Localhost".to_string(),
                        TargetState {
@@ -72,21 +118,21 @@ fn get_default_targets() -> BTreeMap<String, TargetState> {
         working
     }
 
-fn build_targets_from_file(filename: Option<PathBuf>) -> BTreeMap<String, TargetState> {
-    let mut hosts: BTreeMap<String, TargetState> = get_default_targets();
-
+    pub fn build_targets_from_file(filename: Option<PathBuf>) -> BTreeMap<String, TargetState> {
+        // PPState::get_default_targets();
         if let Some(file) = filename {
-        hosts = if !&file.exists() {
-            println!("Cant load hosts from {:?}.  Using default host list.", file.clone().as_os_str());
+            let mut working = BTreeMap::new();
+            if !&file.exists() {
+                debug!("Cant load hosts from {:?}.  Using default host list.", file.clone().as_os_str());
                 // use
-            get_default_targets()
+                PPState::get_default_targets()
             } else {
-            println!("LOADING HOSTS FROM  {:?}", file.to_str());
+                debug!("LOADING HOSTS FROM  {:?}", file.to_str());
                 let file = File::open(file);
                 let mut rdr = csv::Reader::from_reader(file.unwrap());
                 for result in rdr.records() {
                     let record = result.unwrap();
-                hosts.insert(record[1].to_string(),
+                    working.insert(record[1].to_string(),
                                    TargetState {
                                        name: record[1].to_string(),
                                        target: Ipv4Addr::from_str(&record[0]).unwrap(),
@@ -95,13 +141,13 @@ fn build_targets_from_file(filename: Option<PathBuf>) -> BTreeMap<String, Target
                                        last_rtt: 0,
                                    });
                 }
-            hosts
+                working
+            }
+        } else {
+            PPState::get_default_targets()
         }
     }
-
-    hosts
 }
-
     fn ips_from_state(to_read_from: BTreeMap<String, TargetState>) -> Vec<Ipv4Addr> {
         let mut working: Vec<Ipv4Addr> = vec![];
         for current in to_read_from {
@@ -111,20 +157,22 @@ fn ips_from_state(to_read_from: BTreeMap<String, TargetState>) -> Vec<Ipv4Addr>
     }
 
     /// Simple program to greet a person
-#[derive(Parser, Debug)]
-#[command(version, about, long_about = None)]
-pub struct AppSettings {
-    /// File of list of hosts
-    #[arg(short, long)]
-    ping_host_file: Option<PathBuf>,
-}
+
 
     fn main() {
         // Get App Settings
         let settings = AppSettings::parse();
 
         print!("Prep to load targets...");
-    let mut targets = build_targets_from_file(settings.ping_host_file);
+        let file_to_check = match settings.ping_host_file {
+            None => {
+                PathBuf::from("./hosts.txt")
+            }
+            Some(actual) => {
+                actual
+            }
+        };
+        let mut targets = PPState::build_targets_from_file(Some(file_to_check));
 
         // channel to send requests to ping
         let (ping_response_sender, ping_response_listener) = mpsc::channel::<PingResult>();
@@ -135,8 +183,10 @@ fn main() {
         let mut display_loop_start = SystemTime::now();
         let mut duration_since_last_loop = SystemTime::now().duration_since(display_loop_start).unwrap();
         loop {
+            let now = SystemTime::now();
             if let Ok(response) = ping_response_listener.recv_timeout(Duration::from_millis(100)) {
-            for (_, (name, current_state)) in targets.clone().iter().enumerate() {
+                let local_targets = targets.clone();
+                for (_, (name, current_state)) in local_targets.iter().enumerate() {
                     if current_state.target == response.target {
                         let last_alive_change = if response.success == current_state.alive {
                             current_state.last_alive_change
@@ -155,27 +205,36 @@ fn main() {
                     }
                 }
             }
-        duration_since_last_loop = SystemTime::now()
+            duration_since_last_loop = now
                 .duration_since(display_loop_start)
                 .expect("unable to figure out how long ago we displayed stuff");
             if duration_since_last_loop.as_secs() > SECONDS_BETWEEN_DISPLAY as u64 {
                 println!("DISPLAY LOOP");
                 println!("Host \t\t\t\t\t | Alive \t | RTT \t\t");
                 for (name, current_result) in targets.clone() {
-                let mut target_string = String::new();
-                let time_since_last_change = SystemTime::now().duration_since(current_result.last_alive_change).unwrap();
-                target_string = format!("{} ({})", name, current_result.target);
+                    let time_since_last_change = now
+                        .duration_since(current_result.last_alive_change)
+                        .unwrap_or(Duration::from_secs(0));
+                    let mut target_string = format!("{} ({})", name, current_result.target);
                     while target_string.len() < 34 {
-                    target_string = format!("{}     ", target_string);
+                        target_string.push(' ');
+                        // target_string = format!("{} ", target_string);
                     }
 
-                println!("{} \t | {} \t | {}\t | Changed {}s ago",
+                    target_string = if current_result.alive {
+                        target_string.green().to_string()
+                    } else {
+                        target_string.red().to_string()
+                    };
+
+                    println!("{} \t | {} \t | {}\t | Changed {} ago",
                              target_string,
                              current_result.alive,
-                         current_result.last_rtt, time_since_last_change.as_secs()
+                             current_result.last_rtt,
+                             duration_to_string(time_since_last_change)
                     );
                 }
-            display_loop_start = SystemTime::now();
+                display_loop_start = now;
             }
         }
     }

src/bin/rat.rs

@@ -0,0 +1,15 @@
+use clap::Parser;
+use ratatui::widgets::TableState;
+use pp::app_settings::AppSettings;
+use pp::tui::ratatui_app::RatatuiApp;
+fn main() -> color_eyre::Result<()> {
+    // find out what file we are using to get our hosts
+    let settings = AppSettings::parse();
+
+    color_eyre::install()?;
+    let terminal = ratatui::init();
+    let result = RatatuiApp::new(settings.ping_host_file).run(terminal);
+    ratatui::restore();
+    result
+}
+

src/lib.rs

@@ -1,8 +1,51 @@
+use std::time::Duration;
+
 pub mod manager;
 pub mod ping_request;
 pub mod ping_result;
 pub mod target_state;
-
+pub mod tui;
+pub mod app_settings;
 
 pub const SECONDS_BETWEEN_DISPLAY: u32 = 1;
 pub const SECONDS_BETWEEN_PING: u32 = 2;
+
+const SECONDS_IN_MINUTE: u32 = 60;
+const SECONDS_IN_HOUR: u32 = SECONDS_IN_MINUTE * 60;
+const SECONDS_IN_DAY: u32 = SECONDS_IN_HOUR * 24;
+
+
+pub fn duration_to_string(to_convert: Duration) -> String {
+    let mut total_seconds = to_convert.as_secs() as u32;
+    let mut working_string = String::new();
+
+    if total_seconds > 86400 {
+        // days
+        let num_days = (total_seconds / SECONDS_IN_DAY) as u32;
+        working_string = format!("{} days", num_days);
+        total_seconds = total_seconds - (num_days * SECONDS_IN_DAY);
+    }
+
+    if total_seconds > 3600 {
+        // hours
+        let num_hours = (total_seconds / SECONDS_IN_HOUR) as u32;
+        if num_hours > 0 {
+            working_string = format!("{} {} hours", working_string, num_hours);
+            total_seconds = total_seconds - (num_hours * SECONDS_IN_HOUR);
+        }
+    }
+    if total_seconds > 60 {
+        let num_minutes = (total_seconds / SECONDS_IN_MINUTE) as u32;
+        if num_minutes > 0 {
+            working_string = format!("{} {} minutes", working_string, num_minutes);
+            total_seconds = total_seconds - (num_minutes * SECONDS_IN_MINUTE);
+        }
+        // minutes
+    }
+
+
+    working_string = format!("{} {} seconds", working_string, total_seconds);
+
+    working_string
+}
+

src/target_state.rs

@@ -1,5 +1,10 @@
 use std::net::Ipv4Addr;
 use std::time::SystemTime;
+use ratatui::buffer::Buffer;
+use ratatui::layout::Rect;
+use ratatui::prelude::{StatefulWidget, Style};
+use ratatui::style::Color;
+use ratatui::widgets::Widget;
 
 #[derive(Clone, Debug)]
 pub struct TargetState {
@@ -21,3 +26,11 @@ impl Default for TargetState {
         }
     }
 }
+struct TargetStateWidget;
+
+impl StatefulWidget for TargetStateWidget {
+    type State = TargetStateWidget;
+    fn render(self, area: Rect, buf: &mut Buffer, state: &mut Self::State) {
+        buf.set_string(area.left(),area.top(),"This is the string set ", Style::default().fg(Color::Red));
+    }
+}

src/tui/mod.rs

@@ -0,0 +1,8 @@
+pub mod mode_editing;
+pub mod mode_exiting;
+pub mod mode_monitoring;
+pub mod ratatui_app;
+pub mod target_state_widget;
+mod ratatui_screens;
+mod mode_deleting;
+mod mode_adding;

src/tui/mode_adding.rs

@@ -0,0 +1,36 @@
+use std::time::Duration;
+use ratatui::Frame;
+use crate::tui::ratatui_app::RatatuiApp;
+use color_eyre::Result;
+use crossterm::event;
+use crossterm::event::{Event, KeyCode, KeyEventKind};
+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(
+            Paragraph::new("Not Yet Written.")
+                .block(Block::bordered())
+                .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::Esc => app.set_screen(Monitoring),
+                    _ => {}
+                }
+                _ => {}
+            }
+
+        }
+        Ok(())
+    }
+}

src/tui/mode_deleting.rs

@@ -0,0 +1,46 @@
+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 crate::tui::ratatui_screens::RatatuiScreens::Monitoring;
+use color_eyre::Result;
+
+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);
+
+        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') => {
+                        println!("TiME TO DELETE SELECTED");
+                    }
+                    KeyCode::Esc | KeyCode::Char('n') | KeyCode::Char('N') => {
+                        app.set_screen(Monitoring)
+                    }
+                    _ => {}
+                }
+                _ => {}
+            }
+        }
+
+        Ok(())
+    }
+}
+

src/tui/mode_editing.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeMap;
+use std::time::Duration;
+use crossterm::event;
+use crossterm::event::{Event, KeyCode, KeyEventKind};
+use ratatui::Frame;
+use ratatui::prelude::Line;
+use ratatui::style::Stylize;
+use ratatui::widgets::{Block, Paragraph};
+use crate::target_state::TargetState;
+use crate::tui::ratatui_app::RatatuiApp;
+use color_eyre::Result;
+use crate::tui::ratatui_screens::RatatuiScreens::Monitoring;
+
+pub struct RatatuiEditingMode {}
+
+impl RatatuiEditingMode {
+    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::Up => {
+                        println!("UP")
+                    }
+                    KeyCode::Down => {
+                        println!("Down")
+                    }
+                    KeyCode::Char('+') => {
+                        println!("ADD HOST")
+                    }
+                    KeyCode::Char('-') => {
+                        println!("Delete Host")
+                    }
+                    KeyCode::Char('q') => {
+                        app.set_running(false);
+                    }
+                    KeyCode::Esc => {
+                        app.set_screen(Monitoring);
+                    }
+                    KeyCode::Char('s') => {
+                        println!("Save to existing file.");
+                    }
+                    _ => {}
+                },
+                _ => {}
+            }
+        }
+        Ok(())
+    }
+
+    pub fn render(frame: &mut Frame, state: &mut BTreeMap<String, TargetState>) {
+        let title = Line::from("Editing Hosts").bold().blue().centered();
+
+        let body_text = "This is the body text for editing hosts\n'q' to exit <esc> to return to monitoring";
+
+        frame.render_widget(
+            Paragraph::new(body_text)
+                .centered()
+                .block(Block::new().title(title).blue()),
+            frame.area(),
+        );
+    }
+}

src/tui/mode_exiting.rs

@@ -0,0 +1,43 @@
+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

@@ -0,0 +1,175 @@
+use crate::duration_to_string;
+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 std::time::{Duration, SystemTime};
+use ratatui::layout::Direction::Vertical;
+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"]
+            .iter()
+            .map(|h| Cell::from(*h));
+        let header = Row::new(headers)
+            .style(Style::default().fg(Color::Yellow))
+            .bottom_margin(1);
+        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_style = if current.alive {
+                Style::default().fg(Color::Green)
+            } else {
+                Style::default().fg(Color::Red)
+            };
+
+            let to_push = 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.",
+                            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("Hosts")
+                .borders(Borders::ALL))
+            .widths(&[
+                Constraint::Min(30),
+                Constraint::Min(6),
+                Constraint::Min(4),
+                Constraint::Min(30)
+            ])
+            .highlight_style(
+                Style::default()
+                    .bg(Color::Blue)
+                    .fg(Color::White)
+                    .add_modifier(Modifier::BOLD),
+            )
+            .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 = "Press <ESC> or q to exit | Press d to delete host | Press a to add host";
+
+        let mut list_items = vec![];
+        for entry in state.get_log_entries(10) {
+            list_items.push(ListItem::new(entry));
+        }
+
+        let list = List::new(list_items)
+            .block(Block::default().title("Logs").borders(Borders::ALL))
+            .highlight_style(
+                Style::default()
+                    .fg(Color::Yellow)
+                    .add_modifier(Modifier::BOLD),
+            );
+       //     .highlight_symbol(">> ");
+
+        let mut list_state = ListState::default();
+        list_state.select(Some(0));
+
+        frame.render_stateful_widget(list, logs_layout, &mut list_state);
+
+        frame.render_widget(
+            Paragraph::new(footer_text)
+                .block(Block::bordered())
+                .centered(),
+            footer_layout,
+        );
+    }
+
+    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) => {
+                            if app.selected_host + 1 == app.state.len() {
+                                app.selected_host = 0;
+                            } else {
+                                app.selected_host += 1;
+                            }
+                        }
+                        (_, 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::Char('e')) | (_, KeyCode::Char('E')) => {
+                        //     app.set_screen(Editing);
+                        // }
+                        // (_, KeyCode::Char('d')) | (_, KeyCode::Char('D')) => {
+                        //     app.set_screen(Deleting);
+                        // }
+                        _ => {}
+                    }
+                }
+                _ => {}
+            }
+        }
+        Ok(())
+    }
+}
+
+pub fn make_state(selected: usize) -> TableState {
+    let mut state = TableState::default();
+    state.select(Some(selected));
+    state
+}

src/tui/ratatui_app.rs

@@ -0,0 +1,220 @@
+use crate::tui::ratatui_screens::RatatuiScreens;
+use crate::manager::Manager;
+use crate::ping_result::PingResult;
+use crate::target_state::TargetState;
+use chrono::{DateTime, Local};
+use color_eyre::Result;
+use ratatui::prelude::*;
+use ratatui::{DefaultTerminal, Frame};
+use std::collections::BTreeMap;
+use std::fs::File;
+use std::net::Ipv4Addr;
+use std::path::PathBuf;
+use std::str::FromStr;
+use std::sync::mpsc;
+use std::sync::mpsc::Receiver;
+use std::time::{Duration, SystemTime};
+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;
+
+
+
+#[derive(Default)]
+pub struct RatatuiApp {
+    running: bool,
+    pub state: BTreeMap<String, TargetState>,
+    current_screen: RatatuiScreens,
+    log_entries: Vec<String>,
+    filename: Option<String>,
+    pub selected_host: usize
+}
+
+/// Private Methods
+impl RatatuiApp {
+    pub fn run(mut self, mut terminal: DefaultTerminal) -> Result<()> {
+        self.running = true;
+        // start the 'manager' thread that spawns its ping threads as needed
+        let (sender, receiver) = mpsc::channel::<PingResult>();
+        Manager::spawn_manager_thread(self.targets_as_vec(), sender);
+        while self.running {
+            // 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))?;
+                    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(())
+    }
+
+    fn consume_waiting_results(&mut self, receiver: &Receiver<PingResult>) {
+        let mut local_state = self.state.clone();
+        if let Ok(new_message) = receiver.recv_timeout(Duration::from_millis(10)) {
+            // find the right TargetState
+            for (name, mut current_state) in local_state.clone() {
+                if current_state.target == new_message.target {
+                    let did_change = new_message.success != current_state.alive;
+
+                    let last_alive_change = if did_change {
+                        SystemTime::now()
+                    } else {
+                        current_state.last_alive_change
+                    };
+
+                    let new_state = TargetState {
+                        name: current_state.name.clone(),
+                        target: current_state.target,
+                        alive: new_message.success,
+                        last_rtt: new_message.rtt,
+                        last_alive_change,
+                    };
+                    local_state.insert(name.clone(), new_state.clone());
+                    let success_message = if new_state.alive {
+                        "Success"
+                    } else {
+                        "Failure"
+                    };
+
+                    let current_time: DateTime<Local> = SystemTime::now().into();
+
+                    if did_change {
+                        self.log_entries.push(format!(
+                            "{:?} {} for {}",
+                            current_time.format("%Y-%m-%d %H:%M:%S: ").to_string(),
+                            success_message,
+                            new_state.name.clone()
+                        ));
+                    }
+                }
+            }
+        }
+        self.state = local_state;
+    }
+
+    fn targets_as_vec(&self) -> Vec<Ipv4Addr> {
+        let mut working = vec![];
+        for (_, current) in &self.state {
+            working.push(current.target);
+        }
+        working
+    }
+
+    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)
+        }
+    }
+
+    fn quit(&mut self) {
+        self.running = false;
+    }
+
+    fn get_default_targets() -> BTreeMap<String, TargetState> {
+        let mut working = BTreeMap::new();
+
+        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 {
+            name: "Google DNS".to_string(),
+            target: Ipv4Addr::new(8, 8, 8, 8),
+            ..TargetState::default()
+        });
+        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 {
+    pub fn new(option: Option<PathBuf>) -> Self {
+
+        let mut working = Self::default();
+        let targets = if let Some(file) = option {
+            let mut working_btree = BTreeMap::new();
+            if !&file.exists() {
+                RatatuiApp::get_default_targets();
+                working.filename = Some("hosts.txt".to_string());
+            } else {
+                let real_file = File::open(file.clone());
+                working.filename = Some(file.as_os_str().to_string_lossy().parse().unwrap());
+                let mut rdr = csv::Reader::from_reader(real_file.unwrap());
+                for result in rdr.records() {
+                    let record = result.unwrap();
+                    working_btree.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,
+                    });
+                }
+            }
+            working_btree
+        } else {
+            RatatuiApp::get_default_targets()
+        };
+        working.state = targets;
+        working
+    }
+
+    pub fn set_screen(&mut self, new_screen: RatatuiScreens) {
+        self.current_screen = new_screen
+    }
+
+    pub fn set_running(&mut self, new_state: bool) {
+        self.running = new_state
+    }
+
+    pub fn clear_log(&mut self) {
+        self.log_entries.clear();
+    }
+    pub fn log_event(&mut self, to_log: String) {
+        self.log_entries.push(to_log);
+    }
+
+    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
+
+    }
+}

src/tui/ratatui_screens.rs

@@ -0,0 +1,10 @@
+
+#[derive(Default)]
+pub enum RatatuiScreens {
+    #[default]
+    Monitoring,
+    Exiting,
+    Editing,
+    Deleting,
+    Adding
+}

src/tui/target_state_widget.rs

@@ -0,0 +1,11 @@
+use ratatui::buffer::Cell;
+use ratatui::prelude::*;
+
+pub struct TargetStateWidget;
+
+impl Widget for TargetStateWidget {
+    fn render(self, area: Rect, buf: &mut Buffer)
+    {
+
+    }
+}