Initial commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "taskwarrior-tui"
+version = "0.1.0"
+authors = ["Dheepak Krishnamurthy <me@kdheepak.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[features]
+default = ["termion-backend"]
+termion-backend = ["tui/termion", "termion"]
+crossterm-backend = ["tui/crossterm", "crossterm"]
+
+[dependencies]
+clap = "*"
+tui = "0.10.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+task-hookrs = "0.7.0"
+termion = { version = "1.5.4", optional = true }
+crossterm = { version = "0.14.2", optional = true }
+rand = "0.7"
+shlex = "0.1.1"
+chrono = "0.4"
+unicode-width = "0.1"

LICENSE

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+MIT License
+
+Copyright (c) 2020 Dheepak Krishnamurthy
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

src/app.rs

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+use serde::{Deserialize, Serialize};
+use serde_json::Result;
+use shlex::split;
+use std::cmp::Ordering;
+use std::convert::TryInto;
+use std::process::Command;
+
+use task_hookrs::import::import;
+use task_hookrs::task::Task;
+use task_hookrs::uda::UDAValue;
+use task_hookrs::date::Date;
+use unicode_width::UnicodeWidthStr;
+
+use chrono::{Local, DateTime, TimeZone, Duration, NaiveDateTime};
+
+use tui::{
+    backend::{Backend, TermionBackend},
+    layout::{Constraint, Direction, Layout, Rect},
+    style::{Color, Modifier, Style},
+    terminal::Frame,
+    text::Text,
+    widgets::{BarChart, Block, Borders, Row, Paragraph, Table, TableState},
+    Terminal,
+};
+
+pub fn cmp(t1: &Task, t2: &Task) -> Ordering {
+    let urgency1 = match &t1.uda()["urgency"] {
+        UDAValue::Str(_) => 0.0,
+        UDAValue::U64(u) => *u as f64,
+        UDAValue::F64(f) => *f,
+    };
+    let urgency2 = match &t2.uda()["urgency"] {
+        UDAValue::Str(_) => 0.0,
+        UDAValue::U64(u) => *u as f64,
+        UDAValue::F64(f) => *f,
+    };
+    urgency2.partial_cmp(&urgency1).unwrap()
+}
+
+pub fn vague_format_date_time(dt: &Date) -> String {
+    let now = Local::now().naive_utc();
+    let seconds = (now - NaiveDateTime::new(dt.date(), dt.time())).num_seconds();
+
+    if seconds >= 60 * 60 * 24 * 365 {
+        return format!("{}y", seconds / 86400 / 365);
+    } else if seconds >= 60 * 60 * 24 * 90 {
+        return format!("{}mo", seconds / 60 / 60 / 24 / 30);
+    } else if seconds >= 60 * 60 * 24 * 14 {
+        return format!("{}w", seconds / 60 / 60 / 24 / 7);
+    } else if seconds >= 60 * 60 * 24 {
+        return format!("{}d", seconds / 60 / 60 / 24);
+    } else if seconds >= 60 * 60 {
+        return format!("{}h", seconds / 60 / 60);
+    } else if seconds >= 60 {
+        return format!("{}min", seconds / 60);
+    } else {
+        return format!("{}s", seconds);
+    }
+}
+
+pub enum InputMode {
+    Normal,
+    Command,
+}
+
+pub struct App {
+    pub should_quit: bool,
+    pub state: TableState,
+    pub filter: String,
+    pub tasks: Vec<Task>,
+    pub task_report_labels: Vec<String>,
+    pub task_report_columns: Vec<String>,
+    pub input_mode: InputMode,
+}
+
+impl App {
+    pub fn new() -> App {
+        let mut app = App {
+            should_quit: false,
+            state: TableState::default(),
+            tasks: vec![],
+            task_report_labels: vec![],
+            task_report_columns: vec![],
+            filter: "status:pending ".to_string(),
+            input_mode: InputMode::Normal,
+        };
+        app.update();
+        app
+    }
+
+    pub fn draw(&mut self, f: &mut Frame<impl Backend>) {
+        let rects = Layout::default()
+            .constraints([
+                Constraint::Percentage(48),
+                Constraint::Percentage(48),
+                Constraint::Max(3),
+            ].as_ref())
+            .split(f.size());
+        self.draw_task_report(f, rects[0]);
+        self.draw_task_details(f, rects[1]);
+        self.draw_command(f, rects[2]);
+        match self.input_mode {
+            InputMode::Normal => (),
+            InputMode::Command => {
+                // Make the cursor visible and ask tui-rs to put it at the specified coordinates after rendering
+                f.set_cursor(
+                    // Put cursor past the end of the input text
+                    rects[2].x + self.filter.width() as u16 + 1,
+                    // Move one line down, from the border to the input line
+                    rects[2].y + 1,
+                )
+            }
+        }
+    }
+
+    fn draw_command(&mut self, f: &mut Frame<impl Backend>, rect: Rect) {
+        let p = Paragraph::new(Text::from(&self.filter[..]))
+            .block(Block::default().borders(Borders::ALL).title("Command"));
+        f.render_widget(p, rect);
+    }
+
+    fn draw_task_details(&mut self, f: &mut Frame<impl Backend>, rect: Rect) {
+        if self.tasks.len() == 0 {
+            f.render_widget(Block::default().borders(Borders::ALL).title("Task not found"), rect);
+            return ();
+        }
+        let selected = self.state.selected().unwrap_or_default();
+        let task_id = self.tasks[selected].id().unwrap_or_default();
+        let output = Command::new("task")
+            .arg(format!("{}", task_id))
+            .output()
+            .expect(
+                &format!("Unable to show details for `task {}`. Check documentation for more information", task_id)[..]
+            );
+        let data = String::from_utf8(output.stdout).unwrap();
+        let p = Paragraph::new(Text::from(&data[..]))
+            .block(Block::default().borders(Borders::ALL).title(format!("Task {}", task_id)));
+        f.render_widget(p, rect);
+    }
+
+    fn draw_task_report(&mut self, f: &mut Frame<impl Backend>, rect: Rect) {
+        let active_style = Style::default()
+            .fg(Color::Blue)
+            .add_modifier(Modifier::BOLD);
+        let normal_style = Style::default();
+
+        let (tasks, headers, widths) = self.task_report();
+        if tasks.len() == 0 {
+            f.render_widget(Block::default().borders(Borders::ALL).title("Task next"), rect);
+            return ();
+        }
+        let header = headers.iter();
+        let rows = tasks
+            .iter()
+            .map(|i| Row::StyledData(i.iter(), normal_style));
+        let constraints: Vec<Constraint> = widths
+            .iter()
+            .map(|i| Constraint::Percentage(std::cmp::min(50, std::cmp::max(*i, 5)).try_into().unwrap()))
+            .collect();
+
+        let t = Table::new(header, rows)
+            .block(Block::default().borders(Borders::ALL).title("Task next"))
+            .highlight_style(normal_style.add_modifier(Modifier::BOLD))
+            .highlight_symbol("• ")
+            .widths(&constraints);
+        f.render_stateful_widget(t, rect, &mut self.state);
+    }
+
+    pub fn get_string_attribute(&self, attribute: &str, task: &Task) -> String {
+        let s = match attribute {
+            "id" => task.id().unwrap_or_default().to_string(),
+            // "entry" => task.entry().unwrap().to_string(),
+            "entry" => vague_format_date_time(task.entry()),
+            "start" => match task.start() {
+                Some(v) => vague_format_date_time(v),
+                None => "".to_string(),
+            },
+            "description" => task.description().to_string(),
+            "urgency" => match &task.uda()["urgency"] {
+                UDAValue::Str(s) => "0.0".to_string(),
+                UDAValue::U64(u) => (*u as f64).to_string(),
+                UDAValue::F64(f) => (*f).to_string(),
+            },
+            _ => "".to_string(),
+        };
+        return s;
+    }
+
+    pub fn task_report(&mut self) -> (Vec<Vec<String>>, Vec<String>, Vec<i16>) {
+        let mut alltasks = vec![];
+        // get all tasks as their string representation
+        for task in &self.tasks {
+            let mut item = vec![];
+            for name in &self.task_report_columns {
+                let attribute = name.split(".").collect::<Vec<&str>>()[0];
+                let s = self.get_string_attribute(attribute, task);
+                item.push(s);
+            }
+            alltasks.push(item)
+        }
+
+        // find which columns are empty
+        let null_columns_len;
+        if alltasks.len() > 0 {
+            null_columns_len = alltasks[0].len();
+        } else {
+            return (vec![], vec![], vec![]);
+        }
+
+        let mut null_columns = vec![0; null_columns_len];
+        for task in &alltasks {
+            for (i, s) in task.iter().enumerate() {
+                null_columns[i] += s.len();
+            }
+        }
+
+        // filter out columns where everything is empty
+        let mut tasks = vec![];
+        for task in &alltasks {
+            let t = task.clone();
+            let t: Vec<String> = t
+                .iter()
+                .enumerate()
+                .filter(|&(i, _)| null_columns[i] != 0)
+                .map(|(_, e)| e.to_owned())
+                .collect();
+            tasks.push(t);
+        }
+
+        // filter out header where all columns are empty
+        let headers: Vec<String> = self
+            .task_report_labels
+            .iter()
+            .enumerate()
+            .filter(|&(i, _)| null_columns[i] != 0)
+            .map(|(_, e)| e.to_owned())
+            .collect();
+
+        // set widths proportional to the content
+        let mut widths: Vec<i16> = vec![0; tasks[0].len()];
+        for task in &tasks {
+            for (i, attr) in task.iter().enumerate() {
+                widths[i] = (attr.len() as i16 * 100
+                    / task.iter().map(|s| s.len() as i16).sum::<i16>())
+                .try_into()
+                .unwrap();
+            }
+        }
+
+        return (tasks, headers, widths);
+    }
+
+    pub fn update(&mut self) {
+        self.export_tasks();
+        self.export_headers();
+    }
+    pub fn next(&mut self) {
+        let i = match self.state.selected() {
+            Some(i) => {
+                if i >= self.tasks.len() - 1 {
+                    0
+                } else {
+                    i + 1
+                }
+            }
+            None => 0,
+        };
+        self.state.select(Some(i));
+    }
+    pub fn previous(&mut self) {
+        let i = match self.state.selected() {
+            Some(i) => {
+                if i == 0 {
+                    self.tasks.len() - 1
+                } else {
+                    i - 1
+                }
+            }
+            None => 0,
+        };
+        self.state.select(Some(i));
+    }
+
+    pub fn export_headers(&mut self) {
+        self.task_report_columns = vec![];
+        self.task_report_labels = vec![];
+
+        let output = Command::new("task")
+            .arg("show")
+            .arg("report.next.columns")
+            .output()
+            .expect("Unable to run `task show report.next.columns`. Check documentation for more information");
+        let data = String::from_utf8(output.stdout).unwrap();
+
+        for line in data.split("\n") {
+            if line.starts_with("report.next.columns") {
+                let column_names: &str = line.split(" ").collect::<Vec<&str>>()[1];
+                for column in column_names.split(",") {
+                    self.task_report_columns.push(column.to_string());
+                }
+            }
+        }
+
+        let output = Command::new("task")
+            .arg("show")
+            .arg("report.next.labels")
+            .output()
+            .expect("Unable to run `task show report.next.labels`. Check documentation for more information");
+        let data = String::from_utf8(output.stdout).unwrap();
+
+        for line in data.split("\n") {
+            if line.starts_with("report.next.labels") {
+                let label_names: &str = line.split(" ").collect::<Vec<&str>>()[1];
+                for label in label_names.split(",") {
+                    self.task_report_labels.push(label.to_string());
+                }
+            }
+        }
+    }
+
+    pub fn export_tasks(&mut self) {
+        let mut task = Command::new("task");
+
+        task.arg("export");
+
+        match split(&self.filter) {
+            Some(cmd) => {
+                for s in cmd {
+                    task.arg(&s);
+                }
+            }
+            None => {
+                task.arg("");
+            }
+        }
+
+        let output = task
+            .output()
+            .expect("Unable to run `task export`. Check documentation for more information");
+        let data = String::from_utf8(output.stdout).unwrap();
+        let imported = import(data.as_bytes());
+        match imported {
+            Ok(i) => {
+                self.tasks = i;
+                self.tasks.sort_by(cmp);
+            }
+            _ => ()
+        }
+
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::app::App;
+    use std::io::stdin;
+
+    use task_hookrs::import::import;
+    use task_hookrs::task::Task;
+
+    #[test]
+    fn test_app() {
+        let mut app = App::new();
+        app.update();
+
+        println!("{:?}", app.task_report_columns);
+        println!("{:?}", app.task_report_labels);
+
+        let (t, h, c) = app.task_report();
+        println!("{:?}", t);
+        println!("{:?}", t);
+        println!("{:?}", t);
+        // if let Ok(tasks) = import(stdin()) {
+        //     for task in tasks {
+        //         println!("Task: {}, entered {:?} is {} -> {}",
+        //                   task.uuid(),
+        //                   task.entry(),
+        //                   task.status(),
+        //                   task.description());
+        //     }
+        // }
+    }
+}

src/main.rs

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+#![allow(dead_code)]
+#![allow(unused_imports)]
+#![allow(unused_variables)]
+
+mod util;
+
+#[allow(dead_code)]
+mod app;
+
+use crate::util::{Event, Events, Config};
+use std::{error::Error, io};
+use termion::{
+    event::Key,
+    input::MouseTerminal,
+    raw::{IntoRawMode, RawTerminal},
+    screen::AlternateScreen,
+};
+use tui::{backend::TermionBackend, Terminal};
+use unicode_width::UnicodeWidthStr;
+use std::time::Duration;
+
+use app::App;
+use app::InputMode;
+
+type B = TermionBackend<AlternateScreen<MouseTerminal<RawTerminal<io::Stdout>>>>;
+
+fn setup_terminal() -> Result<Terminal<B>, io::Error> {
+    let stdout = io::stdout().into_raw_mode()?;
+    let stdout = MouseTerminal::from(stdout);
+    let stdout = AlternateScreen::from(stdout);
+    let backend = TermionBackend::new(stdout);
+    Terminal::new(backend)
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    // Terminal initialization
+    let mut terminal = setup_terminal()?;
+
+    // Setup event handlers
+    let events = Events::with_config(Config{
+        exit_key: Key::Char('q'),
+        tick_rate: Duration::from_secs(5),
+    });
+
+    let mut app = App::new();
+    app.next();
+
+    loop {
+        terminal.draw(|mut frame| app.draw(&mut frame)).unwrap();
+
+        // Handle input
+        if let Event::Input(input) = events.next()? {
+            match app.input_mode {
+                InputMode::Normal => match input {
+                    Key::Ctrl('c') | Key::Char('q') => break,
+                    Key::Char('r')                  => app.update(),
+                    Key::Down | Key::Char('j')      => app.next(),
+                    Key::Up | Key::Char('k')        => app.previous(),
+                    Key::Char('i') => {
+                        app.input_mode = InputMode::Command;
+                    }
+                    _ => {},
+                },
+                InputMode::Command => match input {
+                     Key::Char('\n') | Key::Esc => {
+                        app.input_mode = InputMode::Normal;
+                    }
+                    Key::Char(c) => {
+                        app.filter.push(c);
+                        app.update();
+                    }
+                    Key::Backspace => {
+                        app.filter.pop();
+                        app.update();
+                    }
+                    _ => {}
+                },
+            }
+        }
+    }
+
+    Ok(())
+}

src/util.rs

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+#[cfg(feature = "termion")]
+use std::io;
+use std::sync::mpsc;
+use std::sync::{
+    atomic::{AtomicBool, Ordering},
+    Arc,
+};
+use std::thread;
+use std::time::Duration;
+
+use termion::event::Key;
+use termion::input::TermRead;
+
+pub enum Event<I> {
+    Input(I),
+    Tick,
+}
+
+/// A small event handler that wrap termion input and tick events. Each event
+/// type is handled in its own thread and returned to a common `Receiver`
+pub struct Events {
+    rx: mpsc::Receiver<Event<Key>>,
+    input_handle: thread::JoinHandle<()>,
+    ignore_exit_key: Arc<AtomicBool>,
+    tick_handle: thread::JoinHandle<()>,
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct Config {
+    pub exit_key: Key,
+    pub tick_rate: Duration,
+}
+
+impl Default for Config {
+    fn default() -> Config {
+        Config {
+            exit_key: Key::Char('q'),
+            tick_rate: Duration::from_millis(250),
+        }
+    }
+}
+
+impl Events {
+    pub fn new() -> Events {
+        Events::with_config(Config::default())
+    }
+
+    pub fn with_config(config: Config) -> Events {
+        let (tx, rx) = mpsc::channel();
+        let ignore_exit_key = Arc::new(AtomicBool::new(false));
+        let input_handle = {
+            let tx = tx.clone();
+            let ignore_exit_key = ignore_exit_key.clone();
+            thread::spawn(move || {
+                let stdin = io::stdin();
+                for evt in stdin.keys() {
+                    if let Ok(key) = evt {
+                        if let Err(err) = tx.send(Event::Input(key)) {
+                            eprintln!("{}", err);
+                            return;
+                        }
+                        if !ignore_exit_key.load(Ordering::Relaxed) && key == config.exit_key {
+                            return;
+                        }
+                    }
+                }
+            })
+        };
+        let tick_handle = {
+            thread::spawn(move || loop {
+                if tx.send(Event::Tick).is_err() {
+                    break;
+                }
+                thread::sleep(config.tick_rate);
+            })
+        };
+        Events {
+            rx,
+            ignore_exit_key,
+            input_handle,
+            tick_handle,
+        }
+    }
+
+    pub fn next(&self) -> Result<Event<Key>, mpsc::RecvError> {
+        self.rx.recv()
+    }
+
+    pub fn disable_exit_key(&mut self) {
+        self.ignore_exit_key.store(true, Ordering::Relaxed);
+    }
+
+    pub fn enable_exit_key(&mut self) {
+        self.ignore_exit_key.store(false, Ordering::Relaxed);
+    }
+}