feature (UI): implemented the main UI

src/app/mod.rs

@@ -4,16 +4,44 @@ use matrix_sdk::{Client};
 use accounts::Account;
 use crate::accounts::AccountManager;
 
+pub struct Message {
+    pub author: String,
+    pub message: String,
+}
+
+pub struct Room {
+    pub messages: Vec<Message>,
+}
+
 pub struct App {
     pub account_manager: accounts::AccountManager,
     pub client: Option<Client>,
+
+    current_room_id: u32,
+    rooms: Vec<Room>,
 }
 
 impl App {
     pub fn new() -> Self {
         Self {
             account_manager: AccountManager::new(),
-            client: None
+            client: None,
+            current_room_id: 0,
+            rooms: Vec::new(),
         }
     }
+
+    pub fn fill_test_data(&mut self) {
+        let mut room = Room {
+            messages: Vec::new()
+        };
+
+        room.messages.push(Message {author: "someone".to_string(), message: "test".to_string()});
+
+        self.rooms.push(room);
+    }
+
+    pub fn room(&self) -> Option<&Room> {
+        self.rooms.get(self.current_room_id as usize)
+    }
 }

src/main.rs

@@ -4,15 +4,22 @@ mod app;
 
 use matrix_sdk::ruma::exports::serde_json;
 use tokio::time::{sleep, Duration};
+use crate::app::Message;
+use crate::ui::UI;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     tracing_subscriber::fmt::init();
 
     let mut app = app::App::new();
+    app.fill_test_data();
 
-    let client = app.account_manager.add("https://nerdcult.net", "test", "abcd1234").await?;
-    app.client = Some(client);
+    let mut ui = UI::new();
+    ui.draw_main(&app)?;
+
+
+    // let client = app.account_manager.add("https://nerdcult.net", "test", "abcd1234").await?;
+    // app.client = Some(client);
 
     // let client = app.account_manager.login(0).await?;
     // app.client = Some(client);

src/ui/mod.rs

@@ -1,48 +1,150 @@
-use crate::ui;
+use crate::app::{App};
 use crossterm::event::KeyCode::Null;
 use crossterm::{
     event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
     execute,
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
+use anyhow::{Error, Result};
 use std::io::Stdout;
 use std::{io, thread, time::Duration};
-use tui::{
-    backend::CrosstermBackend,
-    layout::{Constraint, Direction, Layout},
-    widgets::{Block, Borders, Widget},
-    Terminal,
-};
+use tui::{backend::CrosstermBackend, layout::{Constraint, Direction, Layout, Rect}, widgets::{Block, Borders, Widget}, Terminal, Frame};
+use tui::layout::Alignment;
+use tui::style::{Color, Style};
+use tui::text::{Spans, Span};
+use tui::widgets::{Paragraph, Wrap};
+
 
 pub struct UI {
-    backend: CrosstermBackend<Stdout>,
     terminal: Terminal<CrosstermBackend<Stdout>>,
 }
 
-pub fn ui_create() -> Result<(), io::Error> {
-    // setup terminal
+fn terminal_prepare() -> Result<Stdout> {
     enable_raw_mode()?;
     let mut stdout = io::stdout();
     execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
-    let backend = CrosstermBackend::new(stdout);
-    let mut terminal = Terminal::new(backend)?;
-
-    terminal.draw(|f| {
-        let size = f.size();
-        let block = Block::default().title("Layout design in work...").borders(Borders::ALL);
-        f.render_widget(block, size);
-    })?;
-
-    thread::sleep(Duration::from_millis(5000));
-
-    // restore terminal
-    disable_raw_mode()?;
-    execute!(
-        terminal.backend_mut(),
-        LeaveAlternateScreen,
-        DisableMouseCapture
-    )?;
-    terminal.show_cursor()?;
-
-    Ok(())
+    return Ok(stdout);
+}
+
+fn draw_main_status_block(frame: &mut Frame<CrosstermBackend<Stdout>>, area: Rect) {
+    let panel = Block::default()
+        .title("Status")
+        .borders(Borders::ALL);
+
+    frame.render_widget(panel, area);
+}
+
+fn draw_main_rooms_block(frame: &mut Frame<CrosstermBackend<Stdout>>, area: Rect) {
+    let panel = Block::default()
+        .title("Rooms")
+        .borders(Borders::ALL);
+
+    frame.render_widget(panel, area);
+}
+
+fn draw_main_messages_block(frame: &mut Frame<CrosstermBackend<Stdout>>, area: Rect, app: &App) {
+    let messages = match app.room() {
+        None => return,
+        Some(r) => {
+            r.messages
+                .iter()
+                .rev()
+                .map(|msg| {
+                    Spans::from(vec![
+                        Span::styled(&msg.author, Style::default().fg(Color::Cyan)),
+                        Span::styled(": ", Style::default().fg(Color::Cyan)),
+                        Span::styled(&msg.message, Style::default().fg(Color::White)),
+                    ])
+                })
+                .collect::<Vec<_>>()
+        },
+    };
+
+    let panel = Paragraph::new(messages)
+        .block(
+            Block::default()
+            .title("Messages")
+            .borders(Borders::ALL))
+        .alignment(Alignment::Left)
+        .wrap(Wrap {trim: false});
+
+
+    frame.render_widget(panel, area);
+}
+
+fn draw_main_message_compose_block(frame: &mut Frame<CrosstermBackend<Stdout>>, area: Rect) {
+    let panel = Block::default()
+        .title("Message Compose")
+        .borders(Borders::ALL);
+
+    frame.render_widget(panel, area);
+}
+
+fn draw_main_room_info_block(frame: &mut Frame<CrosstermBackend<Stdout>>, area: Rect) {
+    let panel = Block::default()
+        .title("Room Info")
+        .borders(Borders::ALL);
+
+    frame.render_widget(panel, area);
+}
+
+impl UI {
+    pub fn new() -> Self {
+        let stdout = terminal_prepare().expect("failed to prepare terminal");
+        let backend = CrosstermBackend::new(stdout);
+        let mut terminal = Terminal::new(backend).expect("failed to initialize terminal");
+
+        terminal.clear().expect("failed to clear screen");
+
+        Self {
+            terminal
+        }
+    }
+
+    pub fn draw_main(&mut self, app: &App) -> Result<()> {
+        let chunk = self.terminal.size()?;
+
+        let main_chunks = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([Constraint::Length(32), Constraint::Min(16), Constraint::Length(32)].as_ref())
+            .split(chunk);
+
+        let left_chunks = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Length(5), Constraint::Min(4)].as_ref())
+            .split(main_chunks[0]);
+
+        let middle_chunks = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Min(4), Constraint::Length(3)].as_ref())
+            .split(main_chunks[1]);
+
+        let right_chunks = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Min(4)].as_ref())
+            .split(main_chunks[2]);
+
+
+        self.terminal.draw(|frame| {
+            draw_main_status_block(frame, left_chunks[0]);
+            draw_main_rooms_block(frame, left_chunks[1]);
+            draw_main_messages_block(frame, middle_chunks[0], app);
+            draw_main_message_compose_block(frame, middle_chunks[1]);
+            draw_main_room_info_block(frame, right_chunks[0]);
+        })?;
+
+        thread::sleep(Duration::from_millis(10000));
+        Ok(())
+    }
+
+    pub fn close(&mut self) -> Result<()>{
+        disable_raw_mode()?;
+        execute!(
+            self.terminal.backend_mut(),
+            LeaveAlternateScreen,
+            DisableMouseCapture
+        )?;
+        self.terminal.show_cursor()?;
+        Ok(())
+    }
 }