use ratagrid::{Column, Grid, PageRequest, SortDirection};
use ratatui::style::{Color, Modifier, Style};
use std::{cell::Cell, num::NonZeroUsize, rc::Rc};
pub(super) const SCENARIOS: [Scenario; 7] = [
Scenario::Jobs,
Scenario::HundredK,
Scenario::Million,
Scenario::Unicode,
Scenario::Wide,
Scenario::Empty,
Scenario::Paged,
];
#[derive(Clone, Copy, PartialEq, Eq)]
pub(super) enum Scenario {
Jobs,
HundredK,
Million,
Unicode,
Wide,
Empty,
Paged,
}
impl Scenario {
pub(super) fn label(self) -> &'static str {
match self {
Self::Jobs => "Jobs",
Self::HundredK => "100K rows",
Self::Million => "1M rows",
Self::Unicode => "Unicode",
Self::Wide => "32 columns",
Self::Empty => "Empty",
Self::Paged => "Paged 100M",
}
}
pub(super) fn slug(self) -> &'static str {
match self {
Self::Jobs => "jobs",
Self::HundredK => "100k",
Self::Million => "million",
Self::Unicode => "unicode",
Self::Wide => "wide",
Self::Empty => "empty",
Self::Paged => "paged",
}
}
pub(super) fn compact_label(self) -> &'static str {
match self {
Self::Jobs => "Jobs",
Self::HundredK => "100K",
Self::Million => "1M",
Self::Unicode => "UTF8",
Self::Wide => "Wide",
Self::Empty => "∅",
Self::Paged => "Paged",
}
}
pub(super) fn rows(self) -> usize {
match self {
Self::Jobs => 250,
Self::HundredK => 100_000,
Self::Million => 1_000_000,
Self::Unicode => 128,
Self::Wide => 10_000,
Self::Empty => 0,
Self::Paged => 100_000_000,
}
}
pub(super) fn columns(self) -> usize {
if self == Self::Wide { 32 } else { 9 }
}
pub(super) fn description(self) -> &'static str {
match self {
Self::Paged => {
"100 million virtual records, 50 loaded. Click pager buttons; [ and ] change pages; P changes page size."
}
Self::Jobs => {
"Select a row, then click Boost below: other cells count up and glow. A toggles motion."
}
Self::HundredK => "100,000 records. Try sorting latency, then End and Home.",
Self::Million => {
"One million records. Only visible cells are formatted; sorting visits all rows."
}
Self::Unicode => {
"CJK, combining accents, emoji, long paths, blank cells and control characters."
}
Self::Wide => {
"32 columns. Arrows move the cursor; Shift+wheel scrolls; Tab reveals each header."
}
Self::Empty => {
"No records. Headers still sort and resize. Turn on the live feed to add rows."
}
}
}
}
#[derive(Clone)]
pub(super) struct Record {
pub(super) id: usize,
pub(super) latency: Option<u64>,
pub(super) delta: i64,
pub(super) memory: u64,
pub(super) unicode: bool,
pub(super) remote: bool,
}
impl Record {
pub(super) fn label(&self) -> &'static str {
if self.remote {
return "Indexed record";
}
let labels = if self.unicode {
[
"東京 / build",
"cafe\u{301} / tests",
"🦀 Rust / lint",
"👩🏽💻 agent / review",
"🚀 deploy / preview",
"a\u{1b}\n\tb / controls",
"very/long/path/that/should/be/clipped/without/breaking/the/next/column",
"",
]
} else {
[
"Compile workspace",
"Run integration tests",
"Lint source",
"Review pull request",
"Deploy preview",
"Build documentation",
"Sync fixtures",
"Package release",
]
};
labels[self.id % labels.len()]
}
pub(super) fn name(&self) -> String {
format!("{} #{:06}", self.label(), self.id + 1)
}
pub(super) fn state(&self) -> &'static str {
["running", "queued", "complete", "blocked"][self.id % 4]
}
pub(super) fn owner(&self) -> &'static str {
["Ada", "Lin", "Sam", "Noor"][self.id % 4]
}
pub(super) fn region(&self) -> &'static str {
["us-east", "eu-west", "ap-south", "local"][self.id % 4]
}
}
pub(super) fn mixed(mut n: u64) -> u64 {
n = (n ^ (n >> 30)).wrapping_mul(0xbf58_476d_1ce4_e5b9);
n = (n ^ (n >> 27)).wrapping_mul(0x94d0_49bb_1331_11eb);
n ^ (n >> 31)
}
pub(super) fn records(scenario: Scenario, count: usize, generation: u64) -> Vec<Record> {
(0..count)
.map(|id| {
let value = mixed(id as u64 + generation * 7919 + 1);
Record {
id,
latency: (!id.is_multiple_of(11)).then_some(value % 20_000),
delta: (value % 201) as i64 - 100,
memory: value % 8192,
unicode: scenario == Scenario::Unicode,
remote: false,
}
})
.collect()
}
pub(super) fn columns(count: usize) -> Vec<Column<Record>> {
themed_columns(count, Rc::new(Cell::new(false)))
}
fn themed_columns(count: usize, light: Rc<Cell<bool>>) -> Vec<Column<Record>> {
let mut columns = vec![
Column::new("ID", 9, |r: &Record| format!("{:06}", r.id + 1))
.sortable(|a, b| a.id.cmp(&b.id)),
Column::new("Workload", 29, Record::name)
.sortable(|a, b| a.label().cmp(b.label()).then(a.id.cmp(&b.id))),
Column::new("State", 12, |r: &Record| r.state().into())
.sortable(|a, b| a.state().cmp(b.state())),
Column::new("Latency", 14, |r: &Record| {
r.latency.map_or("—".into(), |n| format!("{n:>6} ms"))
})
.sortable(|a, b| a.latency.cmp(&b.latency)),
Column::new("Delta", 11, |r: &Record| format!("{:+} %", r.delta))
.sortable(|a, b| a.delta.cmp(&b.delta)),
Column::new("Memory", 13, |r: &Record| format!("{} MiB", r.memory))
.sortable(|a, b| a.memory.cmp(&b.memory)),
Column::new("Owner", 12, |r: &Record| r.owner().into())
.sortable(|a, b| a.owner().cmp(b.owner())),
Column::new("Region", 12, |r: &Record| r.region().into())
.sortable(|a, b| a.region().cmp(b.region())),
Column::new("Notes (display only)", 34, |r: &Record| {
if r.unicode {
"東京 · cafe\u{301} · 🦀 · long text".into()
} else {
"Click headers to sort actual values".into()
}
}),
];
for index in 9..count {
columns.push(
Column::new(format!("Metric {:02}", index - 8), 15, move |r: &Record| {
format!("{:>10}", mixed(r.id as u64 + index as u64) % 1_000_000)
})
.sortable(move |a, b| {
mixed(a.id as u64 + index as u64).cmp(&mixed(b.id as u64 + index as u64))
}),
);
}
columns.truncate(count);
columns
.into_iter()
.enumerate()
.map(|(index, column)| {
let palette = light.clone();
column.cell_style(move |r| {
let light = palette.get();
let color = |dark, pale| if light { pale } else { dark };
let cyan = color(Color::Rgb(119, 207, 238), Color::Rgb(0, 99, 135));
let green = color(Color::Rgb(105, 231, 193), Color::Rgb(0, 112, 79));
let amber = color(Color::Rgb(255, 205, 112), Color::Rgb(151, 88, 0));
let red = color(Color::Rgb(255, 131, 150), Color::Rgb(177, 38, 66));
let purple = color(Color::Rgb(192, 164, 255), Color::Rgb(109, 66, 175));
let muted = color(Color::Rgb(128, 149, 170), Color::Rgb(82, 106, 125));
let fg = match index {
0 => muted,
1 => cyan,
2 => match r.state() {
"complete" => green,
"running" => cyan,
"queued" => amber,
_ => red,
},
3 => match r.latency {
None => muted,
Some(n) if n >= 15_000 => red,
Some(n) if n >= 5_000 => amber,
_ => green,
},
4 if r.delta < 0 => red,
4 => green,
5 | 6 => purple,
7 => cyan,
_ => muted,
};
let style = Style::default().fg(fg);
if index == 2 {
style.add_modifier(Modifier::BOLD)
} else {
style
}
})
})
.collect()
}
pub(super) fn page_records(request: PageRequest, total: usize, generation: u64) -> Vec<Record> {
let end = request
.offset()
.saturating_add(request.page_size.get())
.min(total);
let descending = request
.sort
.is_some_and(|s| s.direction == SortDirection::Descending);
let groups = match request.sort.map(|s| s.column) {
Some(2) => Some([3_usize, 2, 1, 0]), Some(6) => Some([0, 1, 3, 2]), Some(7) => Some([2, 1, 3, 0]), _ => None,
};
(request.offset()..end)
.map(|rank| {
let id = if let Some(mut groups) = groups {
if descending {
groups.reverse();
}
let mut local = rank;
let mut found = 0;
for group in groups {
let count = total / 4 + usize::from(group < total % 4);
if local < count {
found = group + local * 4;
break;
}
local -= count;
}
found
} else if descending {
total - 1 - rank
} else {
rank
};
Record {
id,
latency: Some(id as u64 + generation),
delta: id as i64,
memory: id as u64 + generation,
unicode: false,
remote: true,
}
})
.collect()
}
pub(super) fn fulfill_page(grid: &mut Grid<Record>, generation: u64, source_total: usize) {
let query = grid.search_query().to_owned();
if !query.is_empty() {
let id = query
.strip_prefix("id:")
.and_then(|text| text.trim().parse::<usize>().ok());
let Some(id) = id.filter(|&id| id > 0 && id <= source_total) else {
let request = grid.page_request().expect("external source");
grid.set_page_error(
request,
"Use id:NUMBER for this virtual source; explorer demonstrates full text search",
)
.expect("current request");
return;
};
grid.set_total_rows(1);
let request = grid.page_request().expect("external source");
grid.set_page_data(
request,
vec![Record {
id: id - 1,
latency: Some((id - 1) as u64 + generation),
delta: (id - 1) as i64,
memory: (id - 1) as u64 + generation,
unicode: false,
remote: true,
}],
)
.expect("one matching record");
} else {
grid.set_total_rows(source_total);
let request = grid.page_request().expect("external source");
grid.set_page_data(request, page_records(request, source_total, generation))
.expect("complete current page");
}
}
pub(super) fn make_grid(
scenario: Scenario,
count: usize,
column_count: usize,
generation: u64,
light: Rc<Cell<bool>>,
) -> Grid<Record> {
if scenario != Scenario::Paged {
return Grid::new(
themed_columns(column_count, light),
records(scenario, count, generation),
)
.with_row_id(|r| r.id);
}
let mut cols = themed_columns(column_count, light);
cols[0] = Column::new("ID", 12, |r: &Record| format!("{:09}", r.id + 1))
.sortable(|a, b| a.id.cmp(&b.id));
let mut grid =
Grid::new_paged(cols, count, NonZeroUsize::new(50).unwrap()).with_row_id(|r| r.id);
fulfill_page(&mut grid, generation, count);
grid
}