First commit in rust

2026-02-19 13:51:07 +08:00
commit c37ca9ba52
73 changed files with 9737 additions and 0 deletions
--- a/backchannel-client/src/tui/views/login.rs
+++ b/backchannel-client/src/tui/views/login.rs
@@ -0,0 +1,98 @@
+use ratatui::{
+    layout::{Alignment, Constraint, Direction, Layout},
+    style::{Color, Modifier, Style},
+    text::{Line, Span},
+    widgets::{Block, Borders, Paragraph},
+    Frame,
+};
+
+use crate::tui::app::{App, LoginField};
+
+pub fn draw(frame: &mut Frame, app: &App) {
+    let area = frame.size();
+
+    // Centre a 50×12 box on screen.
+    let v = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([
+            Constraint::Percentage(30),
+            Constraint::Length(14),
+            Constraint::Min(0),
+        ])
+        .split(area);
+
+    let h = Layout::default()
+        .direction(Direction::Horizontal)
+        .constraints([
+            Constraint::Percentage(25),
+            Constraint::Percentage(50),
+            Constraint::Percentage(25),
+        ])
+        .split(v[1]);
+
+    let box_area = h[1];
+
+    let mode_label = if app.login_register { "Register" } else { "Login" };
+
+    let outer = Block::default()
+        .title(format!(" BackChannel — {} ", mode_label))
+        .borders(Borders::ALL)
+        .style(Style::default().fg(Color::Cyan));
+
+    frame.render_widget(outer, box_area);
+
+    let inner = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([
+            Constraint::Length(1), // padding
+            Constraint::Length(3), // username
+            Constraint::Length(3), // password
+            Constraint::Length(1), // padding
+            Constraint::Length(1), // hint
+            Constraint::Length(1), // status
+        ])
+        .margin(1)
+        .split(box_area);
+
+    // Username field
+    let username_style = if app.login_field == LoginField::Username {
+        Style::default().fg(Color::Yellow).add_modifier(Modifier::BOLD)
+    } else {
+        Style::default()
+    };
+    let username_widget = Paragraph::new(app.login_username.as_str())
+        .block(Block::default().borders(Borders::ALL).title(" Username "))
+        .style(username_style);
+    frame.render_widget(username_widget, inner[1]);
+
+    // Password field (mask with asterisks)
+    let password_style = if app.login_field == LoginField::Password {
+        Style::default().fg(Color::Yellow).add_modifier(Modifier::BOLD)
+    } else {
+        Style::default()
+    };
+    let masked: String = "*".repeat(app.login_password.len());
+    let password_widget = Paragraph::new(masked.as_str())
+        .block(Block::default().borders(Borders::ALL).title(" Password "))
+        .style(password_style);
+    frame.render_widget(password_widget, inner[2]);
+
+    // Hints
+    let hint = Paragraph::new(Line::from(vec![
+        Span::raw("Tab: switch field  |  Enter: submit  |  "),
+        Span::styled(
+            if app.login_register { "T: switch to Login" } else { "T: switch to Register" },
+            Style::default().fg(Color::DarkGray),
+        ),
+    ]))
+    .alignment(Alignment::Center);
+    frame.render_widget(hint, inner[4]);
+
+    // Status / error message
+    if let Some(msg) = &app.status_msg {
+        let status = Paragraph::new(msg.as_str())
+            .style(Style::default().fg(Color::Red))
+            .alignment(Alignment::Center);
+        frame.render_widget(status, inner[5]);
+    }
+}