use super::common::{color, tag_color, truncate_text_by_width, visual_width};
use super::progress_bar::{draw_progress_bar, ProgressState};
use crate::i18n::I18n;
use crate::storage::Storage;
use crate::todo::now_secs;
use ratatui::{
layout::{Alignment, Rect},
style::{Color, Modifier, Style, Stylize},
text::{Line, Span},
widgets::{Block, Borders, Paragraph},
Frame,
};
pub fn draw_todo_list(
frame: &mut Frame,
area: Rect,
storage: &Storage,
visible: &[usize],
selected: usize,
scroll_state: &mut usize,
i18n: &I18n,
progress_state: &mut ProgressState,
) {
let block = Block::default()
.borders(Borders::ALL)
.border_style(Style::default().fg(color::BORDER))
.title(Span::styled(
format!("[ {} ]", i18n.get("title")),
Style::default().fg(color::HEADER).add_modifier(Modifier::BOLD),
));
let inner = block.inner(area);
frame.render_widget(block, area);
let total = storage.todos.len();
if total > 0 && inner.width > 15 && inner.width >= 2 {
let done = storage.done_count();
let prog_area = Rect::new(inner.left() + 1, inner.top(), inner.width - 2, 1);
if prog_area.width > 0 {
draw_progress_bar(frame, prog_area, done, total, progress_state);
}
}
if inner.width > 20 {
let header = Line::from(vec![Span::raw(i18n.get("column_header"))]);
let header_width = visual_width(i18n.get("column_header")) as u16;
if header_width + 2 <= inner.width {
frame.render_widget(Paragraph::new(header).style(Style::default().dim().add_modifier(Modifier::BOLD)),
Rect::new(inner.left() + 1, inner.top() + 2, header_width, 1));
}
let line_len = (inner.width - 2) as usize;
if line_len > 0 {
let divider = Line::from(vec![Span::raw("─".repeat(line_len))]);
if line_len as u16 <= inner.width - 2 {
frame.render_widget(Paragraph::new(divider).style(Style::default().fg(color::BORDER)),
Rect::new(inner.left() + 1, inner.top() + 3, inner.width - 2, 1));
}
}
}
let list_start_y = inner.top() + 5;
let list_height = inner.height.saturating_sub(6) as usize;
if list_height == 0 {
return;
}
let total_items = visible.len();
if total_items == 0 {
let msg1 = i18n.get("empty_list_line1");
let msg2 = i18n.get("empty_list_line2");
let msg1_len = visual_width(msg1) as u16;
let msg2_len = visual_width(msg2) as u16;
let center_y = list_start_y + (list_height / 2) as u16;
let y1 = center_y.saturating_sub(1);
let y2 = y1 + 1;
if msg1_len + 2 <= inner.width && y1 < inner.bottom() - 1 {
frame.render_widget(
Paragraph::new(Span::styled(msg1, Style::default().fg(color::PENDING).add_modifier(Modifier::BOLD))),
Rect::new(inner.left() + 2, y1, msg1_len, 1),
);
}
if msg2_len + 2 <= inner.width && y2 < inner.bottom() - 1 {
frame.render_widget(
Paragraph::new(Span::styled(msg2, Style::default().fg(color::PENDING).add_modifier(Modifier::BOLD))),
Rect::new(inner.left() + 2, y2, msg2_len, 1),
);
}
return;
}
if selected < *scroll_state {
*scroll_state = selected;
} else if selected >= *scroll_state + list_height {
*scroll_state = selected.saturating_sub(list_height - 1);
}
if *scroll_state + list_height > total_items {
*scroll_state = total_items.saturating_sub(list_height);
}
let remaining = if list_height < total_items && *scroll_state + list_height <= total_items {
total_items - (*scroll_state + list_height)
} else {
0
};
let up = i18n.get("scroll_up");
let down_symbol = i18n.get("scroll_down");
let remaining_str = format!("{}", remaining);
let max_width = up.chars().count()
.max(down_symbol.chars().count())
.max(remaining_str.chars().count()) as u16;
let x = inner.right() - max_width - 1;
if *scroll_state > 0 {
let y_up = list_start_y - 1;
if y_up > inner.top() + 2 {
frame.render_widget(
Paragraph::new(Span::styled(up, Style::default().fg(color::SEARCH).bg(Color::Reset).add_modifier(Modifier::BOLD)))
.alignment(Alignment::Right),
Rect::new(x, y_up, max_width, 1),
);
}
}
if remaining > 0 {
let y1 = inner.bottom() - 2;
let y2 = inner.bottom() - 1;
if y1 > list_start_y {
frame.render_widget(
Paragraph::new(Span::styled(down_symbol, Style::default().fg(color::SEARCH).bg(Color::Reset).add_modifier(Modifier::BOLD)))
.alignment(Alignment::Right),
Rect::new(x, y1, max_width, 1),
);
frame.render_widget(
Paragraph::new(Span::styled(remaining_str, Style::default().fg(color::SEARCH).bg(Color::Reset).add_modifier(Modifier::BOLD)))
.alignment(Alignment::Right),
Rect::new(x, y2, max_width, 1),
);
}
}
for i in 0..list_height {
let vi = *scroll_state + i;
if vi >= total_items {
break;
}
let todo_idx = visible[vi];
let todo = &storage.todos[todo_idx];
let is_selected = vi == selected;
let y = list_start_y + i as u16;
let base_style = if is_selected {
Style::default().bg(color::SELECTED_BG).fg(color::SELECTED_FG).add_modifier(Modifier::BOLD)
} else if todo.done {
Style::default().fg(color::DONE).dim()
} else if todo.pinned {
Style::default().fg(color::PIN).add_modifier(Modifier::BOLD)
} else {
Style::default().fg(color::PENDING).add_modifier(Modifier::BOLD)
};
let pin_mark = if todo.pinned && !todo.done { '*' } else { ' ' };
let done_mark = if todo.done { 'x' } else { ' ' };
let mut spans = Vec::new();
spans.push(Span::styled(format!("{} [{}] ", pin_mark, done_mark), base_style));
if !todo.tag.is_empty() {
let tag_style = if is_selected {
base_style
} else {
Style::default().fg(tag_color(&todo.tag)).add_modifier(Modifier::BOLD)
};
spans.push(Span::styled(format!("#{} ", todo.tag), tag_style));
}
if !todo.done && todo.due_date > 0 {
let now = now_secs();
let overdue = todo.due_date < now;
let due_symbol = if overdue { "‼ " } else { "~~ " };
let due_style = if is_selected {
base_style
} else if overdue {
Style::default().fg(Color::Red).add_modifier(Modifier::BOLD)
} else {
Style::default().fg(color::GREEN).add_modifier(Modifier::BOLD)
};
spans.push(Span::styled(due_symbol, due_style));
}
let text_part = &todo.text;
let used_width: usize = spans.iter().map(|s| s.content.len()).sum();
let max_width_text = (inner.width as usize).saturating_sub(used_width + 2);
let truncated_text = if visual_width(text_part) > max_width_text {
truncate_text_by_width(text_part, max_width_text.saturating_sub(1)) + "…"
} else {
text_part.clone()
};
spans.push(Span::styled(truncated_text, base_style));
let line = Line::from(spans);
let line_width = line.width() as u16;
if y < inner.bottom() - 1 && line_width + 1 <= inner.width {
frame.render_widget(Paragraph::new(line), Rect::new(inner.left() + 1, y, line_width, 1));
}
}
}