kptui 0.18.0

TUI password manager for KeePass vaults
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use ratatui::{
	Frame,
	layout::{Alignment, Constraint, Direction, Layout, Margin, Rect},
	style::Style,
	text::{Line, Span},
	widgets::{Block, Borders, Paragraph, Wrap},
};

use crate::app::App;
use crate::input::login::database_missing;
use crate::util::default_new_database_path;

pub fn draw_login(frame: &mut Frame, app: &mut App) {
	let area = frame.area().inner(Margin { horizontal: 1, vertical: 1 });

	let logo_height = if app.slim_mode { 0 } else { 20 };

	let vertical = Layout::default()
		.direction(Direction::Vertical)
		.constraints([Constraint::Fill(1), Constraint::Length(logo_height), Constraint::Length(3), Constraint::Fill(1)])
		.split(area);

	let logo_area = vertical[1];
	let input_row = vertical[2];

	let horizontal = Layout::default()
		.direction(Direction::Horizontal)
		.constraints([Constraint::Fill(1), Constraint::Length(50), Constraint::Fill(1)])
		.split(input_row);

	let input_area = horizontal[1];

	// Calculate available input characters
	app.max_len = (input_area.width - 2) as usize;

	let missing = database_missing(app);

	enum BoxContent<'a> {
		Masked(&'a str),
		Static(&'a str),
	}

	let (title, content) = if app.creating_database {
		if app.confirming_new_db_password {
			(" Confirm master password ", BoxContent::Masked(&app.new_db_confirm))
		} else {
			(" New master password ", BoxContent::Masked(&app.password))
		}
	} else if missing {
		(" No database found ", BoxContent::Static("[c] Create a new database"))
	} else {
		("", BoxContent::Masked(&app.password))
	};

	let input_text = match content {
		BoxContent::Masked(buf) => "•".repeat(buf.chars().count()),
		BoxContent::Static(text) => text.to_string(),
	};

	let input = Paragraph::new(input_text)
		.alignment(Alignment::Center)
		.block(Block::default().borders(Borders::ALL).border_style(Style::default().fg(app.theme.border)).title(title));

	if !app.slim_mode {
		let claws_style = Style::default().fg(app.theme.claws);
		let claws_light_style = Style::default().fg(app.theme.claws_light);
		let claws_shadow_style = Style::default().fg(app.theme.claws_shadow);
		let shell_style = Style::default().fg(app.theme.shell);
		let shell_light_style = Style::default().fg(app.theme.shell_light);
		let shell_shadow_style = Style::default().fg(app.theme.shell_shadow);

		let logo = Paragraph::new(vec![
			Line::from(vec![Span::styled("         ███", claws_light_style), Span::styled("                  ███         ", claws_style)]),
			Line::from(vec![Span::styled("        ██", claws_light_style), Span::styled("█        kptui       ███        ", claws_style)]),
			Line::from(vec![Span::styled("       ██", claws_light_style), Span::styled("█   █              █   ███       ", claws_style)]),
			Line::from(vec![
				Span::styled("      ██", claws_light_style),
				Span::styled("█  ██     ", claws_light_style),
				Span::styled(format!("v{:<8}", env!("CARGO_PKG_VERSION")), claws_light_style),
				Span::styled("  ██  ███      ", claws_style),
			]),
			Line::from(vec![Span::styled("      ██", claws_light_style), Span::styled("███                    █████      ", claws_style)]),
			Line::from(vec![
				Span::styled(" ██", claws_light_style),
				Span::styled("    ██          ", claws_style),
				Span::styled("█  █", claws_light_style),
				Span::styled("          ██    ██ ", claws_style),
			]),
			Line::from(vec![
				Span::styled("██", claws_light_style),
				Span::styled("█     ██         ", claws_style),
				Span::styled("█  █", claws_style),
				Span::styled("         ██     ███", claws_style),
			]),
			Line::from(vec![
				Span::styled("██", claws_light_style),
				Span::styled("██     ██  ", claws_style),
				Span::styled("████████████████", shell_light_style),
				Span::styled("  ██     ████", claws_style),
			]),
			Line::from(vec![
				Span::styled("  ██", claws_light_style),
				Span::styled("██     ", claws_style),
				Span::styled("██", shell_light_style),
				Span::styled("██████████████████", shell_style),
				Span::styled("     ████  ", claws_style),
			]),
			Line::from(vec![
				Span::styled("    ████  ", claws_style),
				Span::styled("██", shell_light_style),
				Span::styled("████████████████████", shell_style),
				Span::styled("  ████    ", claws_style),
			]),
			Line::from(vec![
				Span::styled("       ███", claws_style),
				Span::styled("██", shell_light_style),
				Span::styled("████████████████████", shell_style),
				Span::styled("███       ", claws_style),
			]),
			Line::from(vec![Span::styled("          ████████████████████", shell_style), Span::styled("██          ", shell_shadow_style)]),
			Line::from(vec![
				Span::styled("       ███", claws_style),
				Span::styled("████████████████████", shell_style),
				Span::styled("██", shell_shadow_style),
				Span::styled("███       ", claws_shadow_style),
			]),
			Line::from(vec![
				Span::styled("     ███  ██", claws_style),
				Span::styled("████████████████", shell_style),
				Span::styled("██", shell_shadow_style),
				Span::styled("██  ███     ", claws_shadow_style),
			]),
			Line::from(vec![
				Span::styled("    ██   ██  ", claws_style),
				Span::styled("████████████████", shell_shadow_style),
				Span::styled("  ██   ██    ", claws_shadow_style),
			]),
			Line::from(vec![Span::styled("     █  ██    ", claws_style), Span::styled("██          ██    ██   █    ", claws_shadow_style)]),
			Line::from(vec![Span::styled("         █   ", claws_style), Span::styled("██            ██    █        ", claws_shadow_style)]),
			Line::from(vec![Span::styled("              █            █              ", claws_shadow_style)]),
		])
		.alignment(Alignment::Center)
		.style(claws_style);
		frame.render_widget(logo, logo_area);
	}

	frame.render_widget(input, input_area);

	if let Some(error) = &app.login_error {
		let error_area = Rect { x: input_area.x, y: input_area.y + input_area.height, width: input_area.width, height: 3 };

		let error_text = Paragraph::new(error.as_str())
			.alignment(Alignment::Center)
			.wrap(Wrap { trim: true })
			.style(Style::new().fg(app.theme.error));

		frame.render_widget(error_text, error_area);
	} else if app.creating_database {
		let path = app.config.default_database.clone().unwrap_or_else(default_new_database_path);

		let hint_area = Rect { x: input_area.x, y: input_area.y + input_area.height, width: input_area.width, height: 2 };

		let hint = Paragraph::new(vec![Line::from(format!("will create {}", path.display())), Line::from("[Enter] Confirm  [Esc] Cancel")])
			.alignment(Alignment::Center)
			.style(Style::new().fg(app.theme.warning));

		frame.render_widget(hint, hint_area);
	} else if missing {
		let hint_area = Rect { x: input_area.x, y: input_area.y + input_area.height, width: input_area.width, height: 1 };

		let hint = Paragraph::new("[n] Create a new database  [Esc] Quit")
			.alignment(Alignment::Center)
			.style(Style::new().fg(app.theme.warning));

		frame.render_widget(hint, hint_area);
	} else {
		let hint_area = Rect { x: input_area.x, y: input_area.y + input_area.height, width: input_area.width, height: 1 };

		let hint = Paragraph::new("Enter the master password  [Esc] Quit")
			.alignment(Alignment::Center)
			.style(Style::new().fg(app.theme.warning));

		frame.render_widget(hint, hint_area);
	}

	// Keep cursor inside the box, but only while actually typing into it.
	let typed_len = if app.creating_database {
		if app.confirming_new_db_password {
			app.new_db_confirm.chars().count() as u16
		} else {
			app.password.chars().count() as u16
		}
	} else if missing {
		// Static prompt, nothing to place a cursor in.
		return;
	} else {
		app.password.chars().count() as u16
	};

	let inner = Block::default().borders(Borders::ALL).inner(input_area);
	let cursor_x = inner.x + (inner.width / 2).saturating_sub(typed_len / 2) + typed_len;
	frame.set_cursor_position((cursor_x, input_area.y + 1));
}