typing_rust

public

A small typing test program in Rust

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mod text_combine;
use text_combine::TextCombine;

mod timer;
use timer::Timer;

use std::{
    fmt::format, io, time::Duration,
};


use crossterm::event::{
    self, 
    poll,
    KeyCode,
    KeyEvent,
    KeyEventKind,
    Event,
};

use ratatui::{
    DefaultTerminal, 
    Frame, 
    buffer::Buffer, 
    layout::{Constraint, Direction, Rect, Layout, Alignment}, 
    style::{Modifier, Stylize}, 
    symbols::border, 
    text::{Line, Text}, 
    widgets::{Block, Clear, Paragraph, Widget, Wrap},
};

fn split_at_char(input: &str, n: usize) -> (&str, &str) {
     let split = input
            .char_indices()
            .nth(n)
            .map(|(idx , _)| idx)
            .unwrap_or(input.len());

        input.split_at(split)

}


#[derive(Debug, PartialEq)]
enum Status {
    Running,
    Menu,
    Exit,
}

#[derive(Debug)]
pub struct TypingTest {
    status: Status,
    errors: usize,
    typing: TextCombine,
    words: usize,
    timer: Timer,
}

use Status::*;

impl Default for TypingTest {
    fn default() -> Self {
        Self {
            status: Running,
            errors: 0,
            words: 0,
            typing: TextCombine::new(),
            timer: Timer::new(Duration::from_secs(30))
        }
    }
}

impl Widget for &TypingTest {
    fn render(self, area: Rect, buf: &mut Buffer) {
        match self.status {
            Running => self.render_game(area, buf),
            Menu => self.render_menu(area, buf),
            Exit => {},
        }
    }
}


impl TypingTest {

    fn run(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {

        while self.status != Exit {
            self.game(terminal)?;
            self.menu(terminal)?;
        }

        Ok(())
    }

    fn menu(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
        while self.status == Menu {
            terminal.draw(|frame| self.draw(frame))?;
            self.handle_events()?;
        }

        Ok(())
    }
 
    fn game(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
        
        if self.status != Running {
            return Ok(());
        }

        terminal.draw(|frame| self.draw(frame))?;
        self.handle_events()?;

        self.timer.start();

        while self.status == Running {
            if poll(Duration::from_millis(100))? {
                self.handle_events()?;
            }
            terminal.draw(|frame| self.draw(frame))?;
            self.check_time();
        }

        Ok(())

    }

    fn check_time(&mut self) {
        if self.timer.remaining().is_zero() {
            self.status = Menu;
        }
    }

    fn draw(&self, frame: &mut Frame) {
        frame.render_widget(self, frame.area());
    }

    fn handle_events(&mut self) -> io::Result<()>{
        match event::read()? {
            Event::Key(key_event) if key_event.kind == KeyEventKind::Press => {
                match self.status {
                    Running => self.handle_game_event(key_event),
                    Menu => self.handle_menu_event(key_event),
                    Exit => {},
                }
            }, 
            _ => {},
        }
        Ok(())
    }

    fn handle_game_event(&mut self, key_event: KeyEvent) {
        match key_event.code {
            KeyCode::Esc => self.exit(),
            KeyCode::Backspace => self.back(),
            KeyCode::Char(c) => self.handle_char(c),
            _ => {},
        }
    }

    fn handle_menu_event(&mut self, key_event: KeyEvent) {
        match key_event.code {
            KeyCode::Esc => self.exit(),
            KeyCode::Enter => self.start(),
            _ => {}
        }
    }

    fn back(&mut self) {

        if let Some(pos) = self.typing
        .pos_char(self.typing.real_pos().saturating_sub(1))
        {
            if pos == ' ' {return;}
        }

        self.typing.back();
    }

    fn handle_char(&mut self, c: char) {
        
        if self.typing.real_pos() >= self.typing.get_len() {
            return;
        }

        if let Some(curr) = self.typing
            .curr_char()
        {
            
            if curr == c 
                && self.typing.get_err_n() == 0 
                && self.typing.get_err_s().len() == 0 
            {
                self.typing.pos_increment();
                if c == ' ' {
                    self.words += 1;
                }
            } else if c != ' ' {
                if curr != ' ' {
                    self.typing.err_n_increment();
                    self.errors += 1;
                } else if self.typing.get_err_s().len() < 16 {
                    self.typing.push_err_s(c); 
                    self.errors += 1;
                }
            }
            
        }
        
    }

    fn render_menu(&self, area: Rect, buf: &mut Buffer) {
        self.render_game(area, buf);

        let title = Line::from(" Menu ");
        let bottom = Line::from( vec![
            " New Game ".into(),
            "<Enter> ".into(),
            "Exit ".into(),
            "<Esc> ".into(),
        ]);
    
        let block = Block::bordered()
            .title(title.centered().bold())
            .title_bottom(bottom.centered().bold())
            .border_set(border::THICK);

        let area_menu = area.centered(
            Constraint::Length(40),
            Constraint::Length(10),

        );

        let block_half = Block::bordered().border_set(border::PLAIN);

        let split = Layout::default()
            .direction(Direction::Horizontal)
            .constraints([
                Constraint::Percentage(50),
                Constraint::Percentage(50),
            ])
            .split(block.inner(area_menu));
        
        let wpm = Text::from(vec![
            "WPM".into(),
            format!("{:4.1}",self.get_wpm()).into(),
        ])
        .centered()
        .bold();

        let accuarcy = Text::from(vec![
            "Accuracy".into(),
            format!("{:3.1}", self.get_accuracy()).into(),
        ])
        .centered()
        .bold();

        let wpm_area = block_half.inner(split[0]).centered(
            Constraint::Length(wpm.width() as u16),
            Constraint::Length(2),
        );

        let accuarcy_area = block_half.inner(split[1]).centered(
            Constraint::Length(accuarcy.width() as u16),
            Constraint::Length(2),
        );



        Clear.render(area_menu, buf);
        block_half.clone().render(split[0], buf);
        wpm.render(wpm_area, buf);
        block_half.render(split[1], buf);
        accuarcy.render(accuarcy_area, buf);
        block.render(area_menu, buf);
        
    }

    fn render_game(&self, area: Rect, buf: &mut Buffer) {
        let title = Line::from(vec![
            " WPM ".into(),
            format!("{:4.1}" , self.get_wpm()).into(),
            " // Time ".into(),
            if self.timer.remaining().as_secs() < 10 {
                format!("{:.1}", self.timer.remaining().as_millis() as f64 / 1000.0).into()
            } else {
                format!("{:2} ", (self.timer.remaining().as_secs())).into()
            },
            " // Mistakes ".into(),
            self.errors.to_string().into(),
            (" ").into()
        ]);
        let bottom = Line::from(vec![
            " Exit ".into(),
            "<Esc> ".into(),
        ]);

        let block = Block::bordered()
            .title(title.centered().bold())
            .title_bottom(bottom.centered().bold())
            .border_set(border::THICK);
        
        let (first, rest) = 
            split_at_char(self.typing.get_text(), self.typing.get_pos());

        let (second, rest2) = 
            split_at_char(rest, self.typing.get_err_n());

        let (third, fourth) =
            split_at_char(rest2, 1); 

        

        let text = Line::from(vec![
            first.green().into(),
            second.red().into(),
            self.typing.get_err_s().red().into(),
            if third.len() != 0 {
                third
            } else {
                " "
            }
            .add_modifier(Modifier::UNDERLINED | Modifier::BOLD)
            .into(),
            fourth.into(),
        ]);


        Paragraph::new(text)
            .wrap(Wrap {trim: true})
            .block(block)
            .render(area, buf);
    }


    fn get_wpm(&self) -> f64 {
        (((self.typing.get_pos() + 1) as f64 / 5.0) 
            / self.timer.elapsed().as_secs_f64())
            * 60.0
    }

    fn get_accuracy(&self) -> f64 {
        (1.0 - self.errors as f64 / (self.typing.get_pos() + self.errors) as f64) * 100.0
    }

    fn start(&mut self) {
        *self = Self::default();
    }

    fn exit(&mut self) {
        self.status = Exit;
    }
}



fn main () -> io::Result<()> {
    ratatui::run(|term| TypingTest::default().run(term))
}

1	mod text_combine;
2	use text_combine::TextCombine;
3
4	mod timer;
5	use timer::Timer;
6
7	use std::{
8	fmt::format, io, time::Duration,
9	};
10
11
12	use crossterm::event::{
13	self,
14	poll,
15	KeyCode,
16	KeyEvent,
17	KeyEventKind,
18	Event,
19	};
20
21	use ratatui::{
22	DefaultTerminal,
23	Frame,
24	buffer::Buffer,
25	layout::{Constraint, Direction, Rect, Layout, Alignment},
26	style::{Modifier, Stylize},
27	symbols::border,
28	text::{Line, Text},
29	widgets::{Block, Clear, Paragraph, Widget, Wrap},
30	};
31
32	fn split_at_char(input: &str, n: usize) -> (&str, &str) {
33	let split = input
34	.char_indices()
35	.nth(n)
36	.map(\|(idx , _)\| idx)
37	.unwrap_or(input.len());
38
39	input.split_at(split)
40
41	}
42
43
44	#[derive(Debug, PartialEq)]
45	enum Status {
46	Running,
47	Menu,
48	Exit,
49	}
50
51	#[derive(Debug)]
52	pub struct TypingTest {
53	status: Status,
54	errors: usize,
55	typing: TextCombine,
56	words: usize,
57	timer: Timer,
58	}
59
60	use Status::*;
61
62	impl Default for TypingTest {
63	fn default() -> Self {
64	Self {
65	status: Running,
66	errors: 0,
67	words: 0,
68	typing: TextCombine::new(),
69	timer: Timer::new(Duration::from_secs(30))
70	}
71	}
72	}
73
74	impl Widget for &TypingTest {
75	fn render(self, area: Rect, buf: &mut Buffer) {
76	match self.status {
77	Running => self.render_game(area, buf),
78	Menu => self.render_menu(area, buf),
79	Exit => {},
80	}
81	}
82	}
83
84
85	impl TypingTest {
86
87	fn run(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
88
89	while self.status != Exit {
90	self.game(terminal)?;
91	self.menu(terminal)?;
92	}
93
94	Ok(())
95	}
96
97	fn menu(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
98	while self.status == Menu {
99	terminal.draw(\|frame\| self.draw(frame))?;
100	self.handle_events()?;
101	}
102
103	Ok(())
104	}
105
106	fn game(&mut self, terminal: &mut DefaultTerminal) -> io::Result<()> {
107
108	if self.status != Running {
109	return Ok(());
110	}
111
112	terminal.draw(\|frame\| self.draw(frame))?;
113	self.handle_events()?;
114
115	self.timer.start();
116
117	while self.status == Running {
118	if poll(Duration::from_millis(100))? {
119	self.handle_events()?;
120	}
121	terminal.draw(\|frame\| self.draw(frame))?;
122	self.check_time();
123	}
124
125	Ok(())
126
127	}
128
129	fn check_time(&mut self) {
130	if self.timer.remaining().is_zero() {
131	self.status = Menu;
132	}
133	}
134
135	fn draw(&self, frame: &mut Frame) {
136	frame.render_widget(self, frame.area());
137	}
138
139	fn handle_events(&mut self) -> io::Result<()>{
140	match event::read()? {
141	Event::Key(key_event) if key_event.kind == KeyEventKind::Press => {
142	match self.status {
143	Running => self.handle_game_event(key_event),
144	Menu => self.handle_menu_event(key_event),
145	Exit => {},
146	}
147	},
148	_ => {},
149	}
150	Ok(())
151	}
152
153	fn handle_game_event(&mut self, key_event: KeyEvent) {
154	match key_event.code {
155	KeyCode::Esc => self.exit(),
156	KeyCode::Backspace => self.back(),
157	KeyCode::Char(c) => self.handle_char(c),
158	_ => {},
159	}
160	}
161
162	fn handle_menu_event(&mut self, key_event: KeyEvent) {
163	match key_event.code {
164	KeyCode::Esc => self.exit(),
165	KeyCode::Enter => self.start(),
166	_ => {}
167	}
168	}
169
170	fn back(&mut self) {
171
172	if let Some(pos) = self.typing
173	.pos_char(self.typing.real_pos().saturating_sub(1))
174	{
175	if pos == ' ' {return;}
176	}
177
178	self.typing.back();
179	}
180
181	fn handle_char(&mut self, c: char) {
182
183	if self.typing.real_pos() >= self.typing.get_len() {
184	return;
185	}
186
187	if let Some(curr) = self.typing
188	.curr_char()
189	{
190
191	if curr == c
192	&& self.typing.get_err_n() == 0
193	&& self.typing.get_err_s().len() == 0
194	{
195	self.typing.pos_increment();
196	if c == ' ' {
197	self.words += 1;
198	}
199	} else if c != ' ' {
200	if curr != ' ' {
201	self.typing.err_n_increment();
202	self.errors += 1;
203	} else if self.typing.get_err_s().len() < 16 {
204	self.typing.push_err_s(c);
205	self.errors += 1;
206	}
207	}
208
209	}
210
211	}
212
213	fn render_menu(&self, area: Rect, buf: &mut Buffer) {
214	self.render_game(area, buf);
215
216	let title = Line::from(" Menu ");
217	let bottom = Line::from( vec![
218	" New Game ".into(),
219	"<Enter> ".into(),
220	"Exit ".into(),
221	"<Esc> ".into(),
222	]);
223
224	let block = Block::bordered()
225	.title(title.centered().bold())
226	.title_bottom(bottom.centered().bold())
227	.border_set(border::THICK);
228
229	let area_menu = area.centered(
230	Constraint::Length(40),
231	Constraint::Length(10),
232
233	);
234
235	let block_half = Block::bordered().border_set(border::PLAIN);
236
237	let split = Layout::default()
238	.direction(Direction::Horizontal)
239	.constraints([
240	Constraint::Percentage(50),
241	Constraint::Percentage(50),
242	])
243	.split(block.inner(area_menu));
244
245	let wpm = Text::from(vec![
246	"WPM".into(),
247	format!("{:4.1}",self.get_wpm()).into(),
248	])
249	.centered()
250	.bold();
251
252	let accuarcy = Text::from(vec![
253	"Accuracy".into(),
254	format!("{:3.1}", self.get_accuracy()).into(),
255	])
256	.centered()
257	.bold();
258
259	let wpm_area = block_half.inner(split[0]).centered(
260	Constraint::Length(wpm.width() as u16),
261	Constraint::Length(2),
262	);
263
264	let accuarcy_area = block_half.inner(split[1]).centered(
265	Constraint::Length(accuarcy.width() as u16),
266	Constraint::Length(2),
267	);
268
269
270
271	Clear.render(area_menu, buf);
272	block_half.clone().render(split[0], buf);
273	wpm.render(wpm_area, buf);
274	block_half.render(split[1], buf);
275	accuarcy.render(accuarcy_area, buf);
276	block.render(area_menu, buf);
277
278	}
279
280	fn render_game(&self, area: Rect, buf: &mut Buffer) {
281	let title = Line::from(vec![
282	" WPM ".into(),
283	format!("{:4.1}" , self.get_wpm()).into(),
284	" // Time ".into(),
285	if self.timer.remaining().as_secs() < 10 {
286	format!("{:.1}", self.timer.remaining().as_millis() as f64 / 1000.0).into()
287	} else {
288	format!("{:2} ", (self.timer.remaining().as_secs())).into()
289	},
290	" // Mistakes ".into(),
291	self.errors.to_string().into(),
292	(" ").into()
293	]);
294	let bottom = Line::from(vec![
295	" Exit ".into(),
296	"<Esc> ".into(),
297	]);
298
299	let block = Block::bordered()
300	.title(title.centered().bold())
301	.title_bottom(bottom.centered().bold())
302	.border_set(border::THICK);
303
304	let (first, rest) =
305	split_at_char(self.typing.get_text(), self.typing.get_pos());
306
307	let (second, rest2) =
308	split_at_char(rest, self.typing.get_err_n());
309
310	let (third, fourth) =
311	split_at_char(rest2, 1);
312
313
314
315	let text = Line::from(vec![
316	first.green().into(),
317	second.red().into(),
318	self.typing.get_err_s().red().into(),
319	if third.len() != 0 {
320	third
321	} else {
322	" "
323	}
324	.add_modifier(Modifier::UNDERLINED \| Modifier::BOLD)
325	.into(),
326	fourth.into(),
327	]);
328
329
330	Paragraph::new(text)
331	.wrap(Wrap {trim: true})
332	.block(block)
333	.render(area, buf);
334	}
335
336
337	fn get_wpm(&self) -> f64 {
338	(((self.typing.get_pos() + 1) as f64 / 5.0)
339	/ self.timer.elapsed().as_secs_f64())
340	* 60.0
341	}
342
343	fn get_accuracy(&self) -> f64 {
344	(1.0 - self.errors as f64 / (self.typing.get_pos() + self.errors) as f64) * 100.0
345	}
346
347	fn start(&mut self) {
348	*self = Self::default();
349	}
350
351	fn exit(&mut self) {
352	self.status = Exit;
353	}
354	}
355
356
357
358	fn main () -> io::Result<()> {
359	ratatui::run(\|term\| TypingTest::default().run(term))
360	}