// bracket.js — knockout bracket. R32 slots come from bracket-config.json
// (group positions resolved via computeStandings(), best-third slots via
// thirdPlaceAssignment); every later round is generated by sequential pairing
// of winners (nodes 0-1 → next 0, 2-3 → next 1, …). SF losers feed the
// third-place match. Unresolvable slots render as placeholders, unplayed
// matches as TBD. Interactions land in step 8, simulation in step 9.
import { getData, flagSrc, matchDateUTC } from './app.js';
import { get as storageGet, set as storageSet, getFavorites } from './storage.js';
import { computeStandings, isGroupFinished } from './groups.js';
import { t, translatePhase, getLocale } from './i18n.js';
import { openMatchModal } from './modal.js';
const ROUNDS = [
{ id: 'R32', phase: 'Round of 32', size: 16 },
{ id: 'R16', phase: 'Round of 16', size: 8 },
{ id: 'QF', phase: 'Quarterfinals', size: 4 },
{ id: 'SF', phase: 'Semifinals', size: 2 },
{ id: 'FINAL', phase: 'Final', size: 1 },
];
// ---------------------------------------------------------------- tree
let cachedTree = null;
// results are static per page load; simulation (step 9) will call this
export function invalidateBracket() {
cachedTree = null;
}
export function getBracketTree() {
if (!cachedTree) cachedTree = buildTree();
return cachedTree;
}
function buildTree() {
const { matches, resultByMatchId, bracketConfig } = getData();
const simulation = storageGet('simulation', {});
const standings = computeStandings();
const matchByRef = new Map(matches.filter((m) => m.bracketRef).map((m) => [m.bracketRef, m]));
const nodesByRef = new Map();
const rounds = [];
let previous = null;
for (const round of ROUNDS) {
const nodes = [];
for (let i = 0; i < round.size; i += 1) {
const ref = round.id === 'FINAL' ? 'FINAL' : `${round.id}-${i + 1}`;
const node = {
ref,
round: round.id,
phase: round.phase,
match: matchByRef.get(ref) ?? null,
home: null,
away: null,
winner: null,
loser: null,
result: null,
};
if (round.id === 'R32') {
const entry = bracketConfig.round32[i];
node.home = configSlot(entry.home, standings, bracketConfig);
node.away = configSlot(entry.away, standings, bracketConfig);
} else {
node.home = previous[i * 2].winner ? { teamId: previous[i * 2].winner } : { ph: { kind: 'tbd' } };
node.away = previous[i * 2 + 1].winner ? { teamId: previous[i * 2 + 1].winner } : { ph: { kind: 'tbd' } };
}
decide(node, resultByMatchId);
applySimulation(node, simulation);
nodes.push(node);
nodesByRef.set(ref, node);
}
rounds.push({ ...round, nodes });
previous = nodes;
}
const [sf1, sf2] = rounds.find((r) => r.id === 'SF').nodes;
const third = {
ref: 'THIRD-PLACE',
round: 'THIRD',
phase: 'Third Place',
match: matchByRef.get('THIRD-PLACE') ?? null,
home: sf1.loser ? { teamId: sf1.loser } : { ph: { kind: 'tbd' } },
away: sf2.loser ? { teamId: sf2.loser } : { ph: { kind: 'tbd' } },
winner: null,
loser: null,
result: null,
};
decide(third, resultByMatchId);
applySimulation(third, simulation);
nodesByRef.set('THIRD-PLACE', third);
return { rounds, third, nodesByRef, champion: nodesByRef.get('FINAL').winner };
}
function configSlot(spec, standings, config) {
if (spec.type === 'third') {
const group = config.thirdPlaceAssignment?.[String(spec.slot)];
if (group && isGroupFinished(group)) return { teamId: standings[group][2].teamId };
return { ph: { kind: 'third', n: spec.slot } };
}
if (isGroupFinished(spec.ref)) return { teamId: standings[spec.ref][spec.pos - 1].teamId };
return { ph: { kind: spec.pos === 1 ? 'groupWinner' : 'groupRunnerUp', g: spec.ref } };
}
// real finished results only — the simulation overlay is applySimulation()'s
// job and always loses to a real result
function decide(node, resultByMatchId) {
const result = node.match ? resultByMatchId.get(node.match.id) : null;
node.result = result ?? null;
node.simulated = false;
node.simScore = null;
if (!result || result.status !== 'finished' || !node.home.teamId || !node.away.teamId) return;
let side = result.homeScore > result.awayScore ? 'home'
: result.homeScore < result.awayScore ? 'away'
: null;
if (!side && result.penalties) {
side = result.penalties.home > result.penalties.away ? 'home' : 'away';
}
if (!side) return;
node.winner = node[side].teamId;
node.loser = node[side === 'home' ? 'away' : 'home'].teamId;
}
function isSimulatable(node) {
const realLocked = node.result && node.result.status !== 'scheduled';
return Boolean(node.match) && !realLocked && Boolean(node.home.teamId) && Boolean(node.away.teamId);
}
// User simulation overlays matches without a real final result. Entries whose
// winner no longer matches either resolved team (stale picks after upstream
// changes) are silently ignored — same validation the prediction import uses.
function applySimulation(node, simulation) {
if (node.winner || !node.home.teamId || !node.away.teamId) return;
if (node.result?.status === 'finished') return;
const entry = simulation[node.ref];
if (!entry || (entry.winner !== node.home.teamId && entry.winner !== node.away.teamId)) return;
node.winner = entry.winner;
node.loser = entry.winner === node.home.teamId ? node.away.teamId : node.home.teamId;
node.simulated = true;
const parsed = /^(\d+)-(\d+)$/.exec(entry.score ?? '');
node.simScore = parsed ? { home: Number(parsed[1]), away: Number(parsed[2]) } : null;
}
// ------------------------------------------------------ display helpers
function slotDisplay(slot) {
if (slot?.teamId) {
const team = getData().teamById.get(slot.teamId);
return { team, label: team.name };
}
const ph = slot?.ph ?? { kind: 'tbd' };
switch (ph.kind) {
case 'groupWinner': return { team: null, label: t('bracket.groupWinner').replace('{g}', ph.g) };
case 'groupRunnerUp': return { team: null, label: t('bracket.groupRunnerUp').replace('{g}', ph.g) };
case 'third': return { team: null, label: t('bracket.bestThird').replace('{n}', ph.n) };
default: return { team: null, label: t('app.tbd') };
}
}
// Shared by schedule.js and modal.js: given a match (group or knockout) or a
// bracketRef string, returns { home, away } as { team: Team|null, label }.
export function resolveBracketTeams(matchOrRef) {
const ref = typeof matchOrRef === 'string' ? matchOrRef : matchOrRef.bracketRef;
if (!ref) {
const { teamById } = getData();
const make = (id) => {
const team = teamById.get(id) ?? null;
return { team, label: team?.name ?? t('app.tbd') };
};
return { home: make(matchOrRef.homeTeam), away: make(matchOrRef.awayTeam) };
}
const node = getBracketTree().nodesByRef.get(ref);
if (!node) {
const tbd = { team: null, label: t('app.tbd') };
return { home: tbd, away: tbd };
}
return { home: slotDisplay(node.home), away: slotDisplay(node.away) };
}
// ------------------------------------------------ shared favorites helper
// Matches involving a favorited team — shared by schedule.js and bracket.js.
// Uses resolved slots so knockout matches count once their teams are known.
export function getFavoriteMatches(matches, favorites) {
if (!favorites.length) return [];
const favSet = new Set(favorites);
return matches.filter((match) => {
const slots = resolveBracketTeams(match);
return favSet.has(slots.home.team?.id) || favSet.has(slots.away.team?.id);
});
}
// --------------------------------------------------- challenge (step 12)
// For every knockout match with a real finished result, compares the actual
// winner with the user's simulated pick. Recalculated on every render — no
// persistence of its own.
export function calculateChallengeScore(simulation, results, bracketTree) {
const resultById = new Map(results.map((r) => [r.matchId, r]));
const byPhaseCount = {};
let correct = 0;
let total = 0;
for (const node of bracketTree.nodesByRef.values()) {
if (!node.match || !node.home.teamId || !node.away.teamId) continue;
const result = resultById.get(node.match.id);
if (result?.status !== 'finished') continue;
let side = result.homeScore > result.awayScore ? 'home'
: result.homeScore < result.awayScore ? 'away'
: null;
if (!side && result.penalties) {
side = result.penalties.home > result.penalties.away ? 'home' : 'away';
}
if (!side) continue;
const realWinner = node[side].teamId;
total += 1;
byPhaseCount[node.phase] ??= { correct: 0, total: 0 };
byPhaseCount[node.phase].total += 1;
if (simulation[node.ref]?.winner === realWinner) {
correct += 1;
byPhaseCount[node.phase].correct += 1;
}
}
const byPhase = Object.fromEntries(
Object.entries(byPhaseCount).map(([phase, c]) => [phase, `${c.correct}/${c.total}`]),
);
return { correct, total, byPhase };
}
// ------------------------------------------- share prediction (step 12)
export function getShareableLink() {
const url = new URL(location.href);
url.searchParams.set('prediction', btoa(JSON.stringify(getSimulation())));
return url.toString();
}
// Reads ?prediction= on load. Applies only if every key exists in the current
// bracket tree and the user confirms; invalid/incompatible data is silently
// ignored. The param is removed from the URL either way.
export function loadPredictionFromURL() {
const param = new URLSearchParams(location.search).get('prediction');
if (!param) return;
const cleanURL = new URL(location.href);
cleanURL.searchParams.delete('prediction');
history.replaceState(null, '', cleanURL);
try {
const data = JSON.parse(atob(param));
if (typeof data !== 'object' || data === null || Array.isArray(data)) return;
const entries = Object.entries(data);
if (!entries.length) return;
const tree = getBracketTree();
const valid = entries.every(([ref, entry]) =>
tree.nodesByRef.has(ref) && entry && typeof entry.winner === 'string');
if (!valid) return;
if (window.confirm(t('share.confirm'))) {
storageSet('simulation', data);
refreshAfterSimChange();
}
} catch {
// malformed base64/JSON — ignore silently per spec
}
}
// -------------------------------------------------------------- render
export function initBracket() {
render();
document.addEventListener('langchange', render);
document.addEventListener('favchange', render);
document.addEventListener('datachange', render); // tree already invalidated by the poll → rebuilds
document.addEventListener('timemodechange', render); // kickoff microlines follow the Local/Stadium toggle
// no explicit view choice → default follows the breakpoint (mobile = rounds pager)
window.matchMedia('(max-width: 767px)').addEventListener('change', () => {
if (!VIEW_IDS.includes(storageGet('prefs', {}).bracketView)) render();
});
loadPredictionFromURL();
const root = document.getElementById('bracket-root');
const activate = (el) => {
if (simMode) {
const node = getBracketTree().nodesByRef.get(el.dataset.ref);
if (node && isSimulatable(node)) {
openSimEditor(el.dataset.ref);
return;
}
}
openMatchModal(Number(el.dataset.matchId));
};
root.addEventListener('click', (event) => {
const node = event.target.closest('[data-match-id]');
if (node) activate(node);
});
root.addEventListener('keydown', (event) => {
if (event.key !== 'Enter' && event.key !== ' ') return;
const node = event.target.closest('[data-match-id]');
if (node) {
event.preventDefault();
activate(node);
}
});
}
function challengeCardHTML(challenge) {
const phases = Object.entries(challenge.byPhase)
.map(([phase, score]) => `${translatePhase(phase)}: ${score} `)
.join('');
const summary = t('challenge.correct')
.replace('{x}', challenge.correct)
.replace('{y}', challenge.total);
return `
${t('challenge.title')}
${summary}
${phases}
`;
}
// ------------------------------------------- wallchart layout engine
// Center-out "wallchart": R32 1–8 flow left→center, 9–16 right→center,
// with the Final + champion centerpiece in the middle column and the
// third-place match beneath it. All positions are computed here (absolute
// px inside the canvas); connectors are generated as SVG bezier paths from
// the same numbers, so cards and lines can never drift apart. This engine
// replaced the old flex-column + CSS-stub system (its equal-height
// invariant could not express a mirrored right half).
const GEO = {
gap: 42, // horizontal gap between adjacent columns
centerGap: 46, // SF column ↔ center column
rowGap: 20, // vertical gap between R32 cards
padX: 28,
padTop: 62, // leaves room for the round title row
padBottom: 30,
tiers: {
R32: { w: 184, h: 78 },
R16: { w: 196, h: 82 },
QF: { w: 208, h: 88 },
SF: { w: 220, h: 94 },
FINAL: { w: 264, h: 142 },
THIRD: { w: 208, h: 88 },
},
championH: 118,
championGap: 20, // champion box ↔ final card
thirdGap: 26, // final card ↔ third-place title
thirdTitleH: 22,
};
function refName(roundId, index) {
return roundId === 'FINAL' ? 'FINAL' : `${roundId}-${index + 1}`;
}
function computeWallchartLayout() {
const G = GEO;
const { R32: t32, R16: t16, QF: tQF, SF: tSF, FINAL: tF, THIRD: tT } = G.tiers;
const cards = new Map(); // ref → { x, y, w, h, tier, side }
// column x positions, left → right (right half mirrors the left)
const xL32 = G.padX;
const xL16 = xL32 + t32.w + G.gap;
const xLQF = xL16 + t16.w + G.gap;
const xLSF = xLQF + tQF.w + G.gap;
const xC = xLSF + tSF.w + G.centerGap;
const xRSF = xC + tF.w + G.centerGap;
const xRQF = xRSF + tSF.w + G.gap;
const xR16 = xRQF + tQF.w + G.gap;
const xR32 = xR16 + t16.w + G.gap;
const w = xR32 + t32.w + G.padX;
const h = G.padTop + 8 * t32.h + 7 * G.rowGap + G.padBottom;
for (let i = 0; i < 16; i += 1) {
const left = i < 8;
const row = left ? i : i - 8;
cards.set(refName('R32', i), {
x: left ? xL32 : xR32,
y: G.padTop + row * (t32.h + G.rowGap),
w: t32.w, h: t32.h, tier: 'R32', side: left ? 'L' : 'R',
});
}
// each later node sits at the vertical midpoint of its two feeders
const place = (roundId, prevId, count, tier, xLeft, xRight) => {
for (let i = 0; i < count; i += 1) {
const a = cards.get(refName(prevId, i * 2));
const b = cards.get(refName(prevId, i * 2 + 1));
const cy = (a.y + a.h / 2 + b.y + b.h / 2) / 2;
const left = i < count / 2;
cards.set(refName(roundId, i), {
x: left ? xLeft : xRight,
y: cy - tier.h / 2,
w: tier.w, h: tier.h, tier: roundId, side: left ? 'L' : 'R',
});
}
};
place('R16', 'R32', 8, t16, xL16, xR16);
place('QF', 'R16', 4, tQF, xLQF, xRQF);
place('SF', 'QF', 2, tSF, xLSF, xRSF);
const sf1 = cards.get('SF-1');
const sf2 = cards.get('SF-2');
const midY = (sf1.y + sf1.h / 2 + sf2.y + sf2.h / 2) / 2;
const final = { x: xC, y: midY - tF.h / 2, w: tF.w, h: tF.h, tier: 'FINAL', side: 'C' };
cards.set('FINAL', final);
const champion = {
x: xC, y: final.y - G.championGap - G.championH, w: tF.w, h: G.championH,
};
const thirdTitle = { x: xC + (tF.w - tT.w) / 2, y: final.y + tF.h + G.thirdGap, w: tT.w };
cards.set('THIRD-PLACE', {
x: thirdTitle.x, y: thirdTitle.y + G.thirdTitleH, w: tT.w, h: tT.h, tier: 'THIRD', side: 'C',
});
// connectors: two bezier flow lines into every non-R32 node
const links = [];
const addLink = (fromRef, toRef) => {
const a = cards.get(fromRef);
const b = cards.get(toRef);
const rightward = a.side === 'L'; // left half flows →, right half flows ←
const x1 = rightward ? a.x + a.w : a.x;
const x2 = rightward ? b.x : b.x + b.w;
const y1 = a.y + a.h / 2;
const y2 = b.y + b.h / 2;
const mx = (x1 + x2) / 2;
links.push({
from: fromRef, to: toRef, tier: b.tier,
d: `M ${x1} ${y1} C ${mx} ${y1}, ${mx} ${y2}, ${x2} ${y2}`,
});
};
for (const [roundId, prevId, count] of [['R16', 'R32', 8], ['QF', 'R16', 4], ['SF', 'QF', 2], ['FINAL', 'SF', 1]]) {
for (let i = 0; i < count; i += 1) {
addLink(refName(prevId, i * 2), refName(roundId, i));
addLink(refName(prevId, i * 2 + 1), refName(roundId, i));
}
}
// glowing stem from the final card up into the champion box
const stemX = xC + tF.w / 2;
const stem = `M ${stemX} ${final.y} L ${stemX} ${champion.y + champion.h}`;
const ty = G.padTop - 40;
const labels = [
{ x: xL32, y: ty, w: t32.w, tier: 'R32', phase: 'Round of 32' },
{ x: xL16, y: ty, w: t16.w, tier: 'R16', phase: 'Round of 16' },
{ x: xLQF, y: ty, w: tQF.w, tier: 'QF', phase: 'Quarterfinals' },
{ x: xLSF, y: ty, w: tSF.w, tier: 'SF', phase: 'Semifinals' },
{ x: xC, y: ty, w: tF.w, tier: 'FINAL', phase: 'Final' },
{ x: xRSF, y: ty, w: tSF.w, tier: 'SF', phase: 'Semifinals' },
{ x: xRQF, y: ty, w: tQF.w, tier: 'QF', phase: 'Quarterfinals' },
{ x: xR16, y: ty, w: t16.w, tier: 'R16', phase: 'Round of 16' },
{ x: xR32, y: ty, w: t32.w, tier: 'R32', phase: 'Round of 32' },
];
const scenery = { type: 'pitch', cx: stemX, cy: final.y + tF.h / 2, r: Math.min(230, (h - G.padTop) / 2.6) };
return { id: 'wallchart', w, h, cards, links, stem, labels, scenery, champion, thirdTitle };
}
// --------------------------------------------- radial layout engine
// Second chart view — the "orbit": circular flag tokens on concentric
// rings converging on the trophy. Outermost ring = the 32 entrants; each
// ring inward holds the winner slots of a round (a match's winner slot
// doubles as its next match's participant). Elbow lines trace each team's
// route; gold = real advancement, dashed blue = simulated pick. Clicking
// any token opens its match (winner slots = the match they decide), so the
// modal / sim-editor delegation is unchanged. Names and scores live in the
// app tooltip (has-tip/data-tip) and the modal.
const TGEO = {
pad: 40,
outerR: 388, // 32 entrant tokens
outerD: 44,
winners: { // ring where each round's winner slot sits (its diameter grows inward)
R32: { r: 322, d: 48 },
R16: { r: 252, d: 54 },
QF: { r: 178, d: 60 },
SF: { r: 96, d: 68 }, // = the two finalists flanking the trophy
},
championD: 84,
glowR: 190, // radius of the gold glow pool behind the trophy
thirdDy: 64, // third-place group below the circle
thirdGap: 72, // distance between the two third-place tokens
thirdD: 48,
};
function computeRadialLayout() {
const G = TGEO;
const R = G.outerR + G.outerD / 2 + 8; // circle's outer edge
const cx = G.pad + R;
const cy = G.pad + R;
const w = (G.pad + R) * 2;
const thirdY = cy + R + G.thirdDy;
const h = thirdY + G.thirdD / 2 + G.pad;
return { id: 'radial', w, h, cx, cy, thirdY };
}
// ------------------------------------------------------------- render
// compact kickoff line ("Jul 4, 17:00") honoring the Local/Stadium toggle —
// formatMatchTime()'s medium dateStyle (with year) is too wide for the cards
function kickoffShort(match) {
const stadium = getData().stadiumByName.get(match.stadium);
const mode = storageGet('prefs', {}).timeMode ?? 'local';
const options = { day: 'numeric', month: 'short', hour: '2-digit', minute: '2-digit' };
if (mode === 'stadium' && stadium?.timezone) options.timeZone = stadium.timezone;
return new Intl.DateTimeFormat(getLocale(), options).format(matchDateUTC(match));
}
// ------------------------------------------------------ view switching
// Three views: 'rounds' (swipeable pager, mobile default), 'wallchart'
// (desktop default) and 'radial'. Explicit choice persists in
// wc2026_prefs.bracketView; without one the default follows the breakpoint.
const VIEW_IDS = ['rounds', 'wallchart', 'radial'];
function activeView() {
const stored = storageGet('prefs', {}).bracketView;
if (VIEW_IDS.includes(stored)) return stored;
return window.matchMedia('(max-width: 767px)').matches ? 'rounds' : 'wallchart';
}
function setBracketView(id) {
const prefs = storageGet('prefs', {});
prefs.bracketView = id;
storageSet('prefs', prefs);
}
function viewSwitchHTML(active) {
const labels = {
rounds: t('bracket.viewRounds'),
wallchart: t('bracket.viewWallchart'),
radial: t('bracket.viewRadial'),
};
return `
${VIEW_IDS.map((id) => `
${labels[id]} `).join('')}
`;
}
function render() {
const tree = getBracketTree();
const simulation = getSimulation();
const challenge = calculateChallengeScore(simulation, getData().results, tree);
const hasPicks = Object.keys(simulation).length > 0;
const viewId = activeView();
const chart = viewId !== 'rounds';
const L = chart ? (viewId === 'radial' ? computeRadialLayout() : computeWallchartLayout()) : null;
// the fit observer from the previous render watches removed DOM — reset
if (fitRO) { fitRO.disconnect(); fitRO = null; }
document.getElementById('bracket-root').innerHTML = `
${challenge.total ? challengeCardHTML(challenge) : ''}
${simMode ? `${t('sim.hint')}
` : ''}
${chart ? chartHTML(tree, L, viewId) : pagerHTML(tree)}`;
for (const btn of document.querySelectorAll('#bracket-root .view-btn')) {
btn.addEventListener('click', () => {
if (btn.dataset.view === viewId) return;
setBracketView(btn.dataset.view);
render();
});
}
document.getElementById('sim-toggle').addEventListener('click', () => {
simMode = !simMode;
render();
});
document.getElementById('sim-reset').addEventListener('click', () => {
storageSet('simulation', {});
refreshAfterSimChange();
});
document.getElementById('share-pred').addEventListener('click', async (event) => {
const btn = event.currentTarget;
const link = getShareableLink();
try {
await navigator.clipboard.writeText(link);
const original = btn.textContent;
btn.textContent = t('share.copied');
setTimeout(() => { btn.textContent = original; }, 2000);
} catch {
window.prompt(t('share.button'), link); // clipboard unavailable — let the user copy manually
}
});
if (chart) initInteractions(L);
else initPager(tree);
}
function chartHTML(tree, L, viewId) {
const inner = viewId === 'radial' ? radialInnerHTML(tree, L) : wallchartInnerHTML(tree, L);
return `
`;
}
function wallchartInnerHTML(tree, L) {
let cardsHTML = '';
for (const round of tree.rounds) {
for (const node of round.nodes) cardsHTML += matchNodeHTML(node, L.cards.get(node.ref));
}
cardsHTML += matchNodeHTML(tree.third, L.cards.get('THIRD-PLACE'));
return `
${sceneryHTML(L)}
${linksHTML(L)}
${L.labels.map((lb) => `
${translatePhase(lb.phase)} `).join('')}
${cardsHTML}
${centerHTML(tree, L)}`;
}
// -------------------------------------------------- radial (orbit) view
// short tooltip line for a match: score when played, kickoff otherwise
function matchTip(node) {
if (!node.match) return '';
const home = slotDisplay(node.home);
const away = slotDisplay(node.away);
const { result } = node;
if (result && result.status !== 'scheduled' && node.home.teamId && node.away.teamId) {
const pens = result.penalties ? ` (${result.penalties.home}-${result.penalties.away})` : '';
return `${home.label} ${result.homeScore}–${result.awayScore} ${away.label}${pens}`;
}
if (node.simulated && node.simScore) {
return `${home.label} ${node.simScore.home}–${node.simScore.away} ${away.label} · ${t('sim.chip')}`;
}
return `${home.label} ${t('hero.vs')} ${away.label} · ${kickoffShort(node.match)}`;
}
function radialTokenHTML(pos, d, display, node, opts = {}) {
const classes = [
'bk-token',
opts.ring ? `tk-${opts.ring}` : '',
display.team ? '' : 'tk-tbd',
opts.out ? 'tk-out' : '',
opts.winner ? (node.simulated ? 'tk-sim' : 'tk-winner') : '',
opts.live ? 'tk-live' : '',
opts.fav ? 'tk-fav' : '',
opts.slot && simMode && isSimulatable(node) ? 'simulatable' : '',
].filter(Boolean).join(' ');
const tip = opts.slot ? matchTip(node) : display.label;
const interactive = node.match
? `data-match-id="${node.match.id}" tabindex="0" role="button"
aria-label="${matchTip(node) || display.label} — ${translatePhase(node.phase)}"`
: '';
const flag = display.team
? ` `
: '';
return `
${flag}
`;
}
function radialInnerHTML(tree, L) {
const G = TGEO;
const { cx, cy } = L;
const favorites = getFavorites();
const roundsById = new Map(tree.rounds.map((r) => [r.id, r]));
const polar = (slot, n, r) => {
const th = ((slot + 0.5) / n) * 2 * Math.PI;
return { x: cx + r * Math.sin(th), y: cy - r * Math.cos(th), th, r };
};
const tokens = [];
const lines = [];
const dots = [];
// elbow: out of the participant radially, then straight to the winner slot
const addLine = (from, to, node, sideTeamId, fromRef) => {
const rMid = to.r != null ? to.r + (from.r - (to.r ?? 0)) * 0.5 : from.r * 0.5;
const bend = { x: cx + rMid * Math.sin(from.th), y: cy - rMid * Math.cos(from.th) };
const adv = Boolean(node.winner && node.winner === sideTeamId);
const state = adv ? (node.simulated ? 'is-sim' : 'is-adv') : '';
lines.push(`
`);
dots.push(` `);
};
// entrants (outer ring) + one winner slot per match, ring by ring inward
const winnerPos = new Map();
roundsById.get('R32').nodes.forEach((node, m) => {
const wPos = polar(m, 16, G.winners.R32.r);
winnerPos.set(node.ref, wPos);
[['home', 2 * m], ['away', 2 * m + 1]].forEach(([side, slot]) => {
const pos = polar(slot, 32, G.outerR);
const teamId = node[side].teamId;
tokens.push(radialTokenHTML(pos, G.outerD, slotDisplay(node[side]), node, {
ring: 'ent',
out: Boolean(node.winner && teamId && node.winner !== teamId),
fav: favorites.includes(teamId),
}));
addLine(pos, wPos, node, teamId, node.ref);
});
});
const winnerSlot = (node, ring, pos) => {
const display = node.winner ? slotDisplay({ teamId: node.winner }) : { team: null, label: t('app.tbd') };
return radialTokenHTML(pos, G.winners[ring].d, display, node, {
ring: ring.toLowerCase(),
slot: true, // this token IS the match's winner slot — sim affordance lives here
winner: Boolean(node.winner),
live: node.result?.status === 'live',
fav: Boolean(node.winner) && favorites.includes(node.winner),
});
};
roundsById.get('R32').nodes.forEach((node) => tokens.push(winnerSlot(node, 'R32', winnerPos.get(node.ref))));
for (const [roundId, prevId, n, ring] of [['R16', 'R32', 8, 'R16'], ['QF', 'R16', 4, 'QF'], ['SF', 'QF', 2, 'SF']]) {
roundsById.get(roundId).nodes.forEach((node, i) => {
const wPos = polar(i, n, G.winners[ring].r);
winnerPos.set(node.ref, wPos);
for (const [side, childRef] of [['home', refName(prevId, i * 2)], ['away', refName(prevId, i * 2 + 1)]]) {
addLine(winnerPos.get(childRef), wPos, node, node[side].teamId, childRef);
}
tokens.push(winnerSlot(node, ring, wPos));
});
}
// trophy center = the FINAL's winner slot
const finalNode = tree.nodesByRef.get('FINAL');
const centerPos = { x: cx, y: cy, th: 0, r: 0 };
addLine(winnerPos.get('SF-1'), centerPos, finalNode, finalNode.home.teamId, 'SF-1');
addLine(winnerPos.get('SF-2'), centerPos, finalNode, finalNode.away.teamId, 'SF-2');
const champion = tree.champion ? slotDisplay({ teamId: tree.champion }) : null;
const simChampion = Boolean(tree.champion && finalNode.simulated);
const centerTip = matchTip(finalNode);
const centerHTMLStr = `
${simChampion ? `${t('sim.chip')} ` : ''}
🏆
${champion?.team ? ` ` : ''}
${champion ? `${champion.label} ` : ''}
`;
// third place: a small labeled pair below the circle (SF losers)
const third = tree.third;
const thirdTip = matchTip(third);
const thirdToken = (side) => {
const display = slotDisplay(third[side]);
const win = Boolean(third.winner && third[side].teamId === third.winner);
const flag = display.team
? ` `
: '';
return `
${flag} `;
};
const thirdHTML = `
${translatePhase('Third Place')}
${thirdToken('home')}${thirdToken('away')}
`;
const orbits = [G.outerR, G.winners.R32.r, G.winners.R16.r, G.winners.QF.r]
.map((r) => ` `).join('');
return `
${orbits}
${lines.join('')}
${dots.join('')}
${tokens.join('')}
${centerHTMLStr}
${thirdHTML}`;
}
// faint pitch geometry echoing the wallchart layout: halfway line through
// the center column, center circle around the Final — the stadium floor.
// (The radial view draws its own orbit scenery inside radialInnerHTML.)
function sceneryHTML(L) {
const { cx, cy, r } = L.scenery;
return `
`;
}
function linksHTML(L) {
const paths = L.links.map((link) => `
`).join('');
return `
${paths}
`;
}
// champion centerpiece + third-place block (center column).
// A simulated champion renders in the sim-blue treatment with a SIM chip —
// a user's picks must never be mistakable for a real result (same rule the
// stats verdict follows).
function centerHTML(tree, L) {
const finalNode = tree.nodesByRef.get('FINAL');
const champion = tree.champion ? slotDisplay({ teamId: tree.champion }) : null;
const simChampion = Boolean(tree.champion && finalNode?.simulated);
const flag = champion?.team
? ` `
: '';
const c = L.champion;
const tt = L.thirdTitle;
return `
${simChampion ? `${t('sim.chip')} ` : ''}
🏆
${t('bracket.champion')}
${champion ? `${flag}${champion.label} ` : t('app.tbd')}
${translatePhase('Third Place')} `;
}
function matchNodeHTML(node, pos) {
const home = slotDisplay(node.home);
const away = slotDisplay(node.away);
const live = node.result?.status === 'live';
const favorites = getFavorites();
const hasFav = favorites.includes(node.home.teamId) || favorites.includes(node.away.teamId);
const classes = [
'bracket-match',
`bk-${pos.tier.toLowerCase()}`,
live ? 'is-live' : '',
node.simulated ? 'is-sim' : '',
hasFav ? 'has-fav' : '',
simMode && isSimulatable(node) ? 'simulatable' : '',
].filter(Boolean).join(' ');
const interactive = node.match
? `data-match-id="${node.match.id}" tabindex="0" role="button"
aria-label="${home.label} ${t('hero.vs')} ${away.label} — ${translatePhase(node.phase)}"`
: '';
return `
${node.simulated ? `${t('sim.chip')} ` : ''}
${teamRowHTML(home, node, 'home')}
${teamRowHTML(away, node, 'away')}
${metaHTML(node)}
`;
}
// status fragment shared by chart microlines and pager cards
function statusLine(node) {
const status = node.result?.status;
if (status === 'live') return `${t('hero.live')} `;
if (status === 'finished') return `${t('bracket.ft')} `;
return node.match ? `${kickoffShort(node.match)} ` : '';
}
// microline at the foot of a card: kickoff (upcoming) / LIVE pulse / FT.
// The Final's hero card also carries its venue.
function metaHTML(node) {
if (!node.match) return '';
const venue = node.ref === 'FINAL'
? `${node.match.stadium} · ${node.match.city} `
: '';
return `${venue}${statusLine(node)}
`;
}
// ------------------------------------------------------- rounds pager
// Round-by-round view: chip buttons switch the visible page (R32 → R16 →
// QF → SF → Finals) — button navigation only, no horizontal scrolling.
// Cards are the fuller variant (venue + city). Same data-ref/data-match-id
// contract, so the root delegation (modal + sim editor) works unchanged.
let pagerIndex = null; // survives re-renders (langchange etc.), not reloads
const PAGER_PAGES = [
{ id: 'R32', phase: 'Round of 32' },
{ id: 'R16', phase: 'Round of 16' },
{ id: 'QF', phase: 'Quarterfinals' },
{ id: 'SF', phase: 'Semifinals' },
{ id: 'FINALS', phase: 'Final' },
];
// first round that still has an unfinished match — the page worth opening on
function firstOpenPage(tree) {
for (let i = 0; i < 4; i += 1) {
const round = tree.rounds.find((r) => r.id === PAGER_PAGES[i].id);
if (round.nodes.some((n) => n.result?.status !== 'finished')) return i;
}
return 4;
}
function pcardHTML(node, hero = false) {
const home = slotDisplay(node.home);
const away = slotDisplay(node.away);
const live = node.result?.status === 'live';
const favorites = getFavorites();
const hasFav = favorites.includes(node.home.teamId) || favorites.includes(node.away.teamId);
const classes = [
'bk-pcard',
hero ? 'bk-pcard-hero' : '',
live ? 'is-live' : '',
node.simulated ? 'is-sim' : '',
hasFav ? 'has-fav' : '',
simMode && isSimulatable(node) ? 'simulatable' : '',
].filter(Boolean).join(' ');
const interactive = node.match
? `data-match-id="${node.match.id}" tabindex="0" role="button"
aria-label="${home.label} ${t('hero.vs')} ${away.label} — ${translatePhase(node.phase)}"`
: '';
const top = node.match
? `
${node.match.stadium} · ${node.match.city}
${statusLine(node)}
`
: '';
return `
${node.simulated ? `${t('sim.chip')} ` : ''}
${top}
${teamRowHTML(home, node, 'home')}
${teamRowHTML(away, node, 'away')}
`;
}
function pagerFinalsHTML(tree) {
const finalNode = tree.nodesByRef.get('FINAL');
const champion = tree.champion ? slotDisplay({ teamId: tree.champion }) : null;
const simChampion = Boolean(tree.champion && finalNode?.simulated);
const flag = champion?.team
? ` `
: '';
return `
${simChampion ? `${t('sim.chip')} ` : ''}
🏆
${t('bracket.champion')}
${champion ? `${flag}${champion.label} ` : t('app.tbd')}
${pcardHTML(finalNode, true)}
${translatePhase('Third Place')}
${pcardHTML(tree.third)}`;
}
function pagerHTML(tree) {
const roundsById = new Map(tree.rounds.map((r) => [r.id, r]));
const chips = PAGER_PAGES.map((page, i) => `
${translatePhase(page.phase)} `).join('');
const pages = PAGER_PAGES.map((page) => {
const body = page.id === 'FINALS'
? `${pagerFinalsHTML(tree)}
`
: `${roundsById.get(page.id).nodes.map((n) => pcardHTML(n)).join('')}
`;
return ``;
}).join('');
return `
`;
}
function initPager(tree) {
const pages = [...document.querySelectorAll('#bk-pages .bk-page')];
const chips = [...document.querySelectorAll('#bk-pager-nav .bk-page-btn')];
if (pagerIndex === null) pagerIndex = firstOpenPage(tree);
const show = (i) => {
pagerIndex = Math.max(0, Math.min(PAGER_PAGES.length - 1, i));
pages.forEach((page, k) => { page.hidden = k !== pagerIndex; });
chips.forEach((chip, k) => {
chip.classList.toggle('active', k === pagerIndex);
chip.setAttribute('aria-pressed', String(k === pagerIndex));
});
};
chips.forEach((chip, i) => chip.addEventListener('click', () => show(i)));
show(pagerIndex);
}
// ----------------------------------------------------- simulation (step 9)
let simMode = false;
function getSimulation() {
return storageGet('simulation', {});
}
function refreshAfterSimChange() {
invalidateBracket();
render();
document.dispatchEvent(new CustomEvent('simchange'));
}
function ensureSimDialog() {
if (document.getElementById('sim-dialog')) return;
document.getElementById('modal-root').insertAdjacentHTML(
'beforeend',
' ',
);
const dialog = document.getElementById('sim-dialog');
dialog.addEventListener('click', (event) => {
if (event.target === dialog) dialog.close();
});
}
function openSimEditor(ref) {
ensureSimDialog();
const dialog = document.getElementById('sim-dialog');
const node = getBracketTree().nodesByRef.get(ref);
const existing = getSimulation()[ref] ?? null;
const home = slotDisplay(node.home);
const away = slotDisplay(node.away);
const [scoreHome, scoreAway] = (existing?.score ?? '').split('-');
let selected = existing?.winner ?? null;
const teamButton = (slot, display) => `
${display.label}
`;
dialog.innerHTML = `
`;
const saveBtn = dialog.querySelector('#sim-save');
const homeInput = dialog.querySelector('#sim-score-home');
const awayInput = dialog.querySelector('#sim-score-away');
const select = (teamId) => {
selected = teamId;
for (const btn of dialog.querySelectorAll('.sim-team')) {
btn.classList.toggle('active', btn.dataset.team === teamId);
}
saveBtn.disabled = !selected;
};
for (const btn of dialog.querySelectorAll('.sim-team')) {
btn.addEventListener('click', () => select(btn.dataset.team));
}
// an unequal score implies the winner; a draw needs an explicit pick (pens)
const onScoreInput = () => {
const h = homeInput.value === '' ? null : Number(homeInput.value);
const a = awayInput.value === '' ? null : Number(awayInput.value);
if (h === null || a === null || h === a) return;
select(h > a ? node.home.teamId : node.away.teamId);
};
homeInput.addEventListener('input', onScoreInput);
awayInput.addEventListener('input', onScoreInput);
dialog.setAttribute('aria-label', `${t('sim.title')} — ${home.label} ${t('hero.vs')} ${away.label}`);
dialog.querySelector('[data-close]').addEventListener('click', () => dialog.close());
dialog.querySelector('#sim-clear').addEventListener('click', () => {
const simulation = getSimulation();
delete simulation[ref];
storageSet('simulation', simulation);
dialog.close();
refreshAfterSimChange();
});
saveBtn.addEventListener('click', () => {
if (!selected) return;
const h = homeInput.value === '' ? (selected === node.home.teamId ? 1 : 0) : Number(homeInput.value);
const a = awayInput.value === '' ? (selected === node.away.teamId ? 1 : 0) : Number(awayInput.value);
const simulation = getSimulation();
simulation[ref] = { winner: selected, score: `${h}-${a}` };
storageSet('simulation', simulation);
dialog.close();
refreshAfterSimChange();
});
dialog.showModal();
}
// ------------------------------------------------- interactions (step 8)
const ROUND_ORDER = ['R32', 'R16', 'QF', 'SF', 'FINAL'];
// Zoom state survives re-renders (language switch) but not reloads.
// The fit scale (whole chart visible) is the resting point and the zoom
// label's "100%"; it's recomputed by a ResizeObserver because the panel is
// usually hidden when render() first runs (clientWidth 0 — gotcha class).
const view = { scale: 1, fit: 0, natW: 0, natH: 0, userZoomed: false };
const MAX_SCALE = 2;
let fitRO = null;
function initInteractions(layout) {
const wrap = document.getElementById('bracket-wrap');
const zoomBox = document.getElementById('bracket-zoom');
const canvas = document.getElementById('bracket-canvas');
if (view.layoutId !== layout.id) { // wallchart ↔ radial: fresh fit, not inherited zoom
view.layoutId = layout.id;
view.userZoomed = false;
view.fit = 0;
}
view.natW = layout.w; // geometry is computed, not measured — always known
view.natH = layout.h;
if (view.fit) {
if (!view.userZoomed) view.scale = view.fit;
applyScale(wrap, zoomBox, canvas);
}
updateZoomLabel();
if (fitRO) fitRO.disconnect();
fitRO = new ResizeObserver(() => {
const cw = wrap.clientWidth;
const ch = wrap.clientHeight;
if (cw <= 0 || ch <= 0) return; // panel hidden — wait for the tab to open
view.fit = Math.min(cw / view.natW, ch / view.natH, 1);
if (!view.userZoomed || view.scale < view.fit) view.scale = Math.max(view.fit, view.userZoomed ? view.scale : 0);
if (!view.userZoomed) view.scale = view.fit;
applyScale(wrap, zoomBox, canvas);
updateZoomLabel();
});
fitRO.observe(wrap);
const setScale = (next, cx, cy) => {
if (!view.fit) return;
const scale = Math.min(MAX_SCALE, Math.max(view.fit, next));
if (scale === view.scale) return;
const rect = wrap.getBoundingClientRect();
const px = (cx - rect.left + wrap.scrollLeft) / view.scale;
const py = (cy - rect.top + wrap.scrollTop) / view.scale;
view.scale = scale;
view.userZoomed = true;
applyScale(wrap, zoomBox, canvas);
wrap.scrollLeft = px * scale - (cx - rect.left);
wrap.scrollTop = py * scale - (cy - rect.top);
updateZoomLabel();
};
const zoomAtCenter = (factor) => {
const rect = wrap.getBoundingClientRect();
setScale(view.scale * factor, rect.left + rect.width / 2, rect.top + rect.height / 2);
};
document.getElementById('zoom-in').addEventListener('click', () => zoomAtCenter(1.25));
document.getElementById('zoom-out').addEventListener('click', () => zoomAtCenter(1 / 1.25));
document.getElementById('zoom-reset').addEventListener('click', () => {
if (!view.fit) return;
view.scale = view.fit;
view.userZoomed = false;
applyScale(wrap, zoomBox, canvas);
updateZoomLabel();
});
wrap.addEventListener('wheel', (event) => {
event.preventDefault();
setScale(view.scale * (event.deltaY < 0 ? 1.12 : 1 / 1.12), event.clientX, event.clientY);
}, { passive: false });
// drag to pan (1 pointer) + pinch to zoom (2 pointers)
const pointers = new Map();
let dragging = false;
let dragMoved = false;
let start = null;
let pinch = null;
wrap.addEventListener('pointerdown', (event) => {
pointers.set(event.pointerId, event);
// IMPORTANT: do NOT setPointerCapture here — capturing retargets the
// eventual click to the wrap, which kills match-node clicks (modal and
// simulation). Capture only once a real drag/pinch begins.
if (pointers.size === 1) {
dragging = true;
dragMoved = false;
start = { x: event.clientX, y: event.clientY, left: wrap.scrollLeft, top: wrap.scrollTop };
} else if (pointers.size === 2) {
dragging = false;
for (const p of pointers.values()) {
try { wrap.setPointerCapture(p.pointerId); } catch { /* pointer already gone */ }
}
const [a, b] = [...pointers.values()];
pinch = { dist: Math.hypot(a.clientX - b.clientX, a.clientY - b.clientY), scale: view.scale };
}
});
wrap.addEventListener('pointermove', (event) => {
if (!pointers.has(event.pointerId)) return;
pointers.set(event.pointerId, event);
if (pointers.size === 2 && pinch) {
const [a, b] = [...pointers.values()];
const dist = Math.hypot(a.clientX - b.clientX, a.clientY - b.clientY);
setScale(pinch.scale * (dist / pinch.dist), (a.clientX + b.clientX) / 2, (a.clientY + b.clientY) / 2);
} else if (dragging) {
const dx = event.clientX - start.x;
const dy = event.clientY - start.y;
if (!dragMoved && (Math.abs(dx) > 5 || Math.abs(dy) > 5)) {
dragMoved = true;
try { wrap.setPointerCapture(event.pointerId); } catch { /* pointer already gone */ }
wrap.classList.add('dragging');
}
if (dragMoved) {
wrap.scrollLeft = start.left - dx;
wrap.scrollTop = start.top - dy;
}
}
});
const endPointer = (event) => {
pointers.delete(event.pointerId);
if (pointers.size < 2) pinch = null;
if (pointers.size === 0) {
dragging = false;
wrap.classList.remove('dragging');
}
};
wrap.addEventListener('pointerup', endPointer);
wrap.addEventListener('pointercancel', endPointer);
// a real drag must not fire the match-node click underneath
wrap.addEventListener('click', (event) => {
if (dragMoved) {
event.stopPropagation();
event.preventDefault();
dragMoved = false;
}
}, true);
// hover/focus path highlight — any ref-carrying element (card or token)
canvas.addEventListener('mouseover', (event) => {
const node = event.target.closest('[data-ref]');
if (node) showPath(node.dataset.ref);
});
canvas.addEventListener('mouseout', () => clearPath());
canvas.addEventListener('focusin', (event) => {
const node = event.target.closest('[data-ref]');
if (node) showPath(node.dataset.ref);
});
canvas.addEventListener('focusout', () => clearPath());
}
function applyScale(wrap, zoomBox, canvas) {
zoomBox.style.width = `${view.natW * view.scale}px`;
zoomBox.style.height = `${view.natH * view.scale}px`;
canvas.style.transform = `scale(${view.scale})`;
}
// 100% = the whole-chart fit, not natural card size
function updateZoomLabel() {
const label = document.getElementById('zoom-reset');
if (label) label.textContent = `${Math.round((view.scale / (view.fit || 1)) * 100)}%`;
}
// ----------------------------------------------------- path highlight
function refOf(roundIndex, nodeIndex) {
const id = ROUND_ORDER[roundIndex];
return id === 'FINAL' ? 'FINAL' : `${id}-${nodeIndex + 1}`;
}
// full path = the hovered node, every feeder below it, and its winner's
// route up to the final
function pathRefs(ref) {
const refs = new Set([ref]);
if (ref === 'THIRD-PLACE') {
refs.add('SF-1');
refs.add('SF-2');
return refs;
}
const [roundId, num] = ref === 'FINAL' ? ['FINAL', '1'] : ref.split('-');
const r = ROUND_ORDER.indexOf(roundId);
if (r < 0) return refs;
let i = Number(num) - 1;
for (let rr = r, ii = i; rr < ROUND_ORDER.length - 1; rr += 1) {
ii = Math.floor(ii / 2);
refs.add(refOf(rr + 1, ii));
}
const stack = [[r, i]];
while (stack.length) {
const [cr, ci] = stack.pop();
if (cr === 0) continue;
for (const child of [ci * 2, ci * 2 + 1]) {
refs.add(refOf(cr - 1, child));
stack.push([cr - 1, child]);
}
}
return refs;
}
function showPath(ref) {
const canvas = document.getElementById('bracket-canvas');
clearPath();
canvas.classList.add('has-path');
const refs = pathRefs(ref);
for (const r of refs) {
// cards (wallchart), tokens/center/third group (radial) — anything owning the ref
for (const el of canvas.querySelectorAll(`[data-ref="${r}"]`)) el.classList.add('path-on');
}
// a connector lights up when both of its endpoints are on the path
// (the champion stem carries FINAL→FINAL, so it follows the final)
for (const path of canvas.querySelectorAll('.bk-links path')) {
if (refs.has(path.dataset.from) && refs.has(path.dataset.to)) path.classList.add('path-on');
}
}
function clearPath() {
const canvas = document.getElementById('bracket-canvas');
canvas.classList.remove('has-path');
for (const el of canvas.querySelectorAll('.path-on')) el.classList.remove('path-on');
}
function teamRowHTML(display, node, side) {
const { result } = node;
let score = '';
if (result && result.status !== 'scheduled' && node.home.teamId && node.away.teamId) {
const goals = side === 'home' ? result.homeScore : result.awayScore;
const pens = result.penalties
? `(${side === 'home' ? result.penalties.home : result.penalties.away}) `
: '';
score = `${goals}${pens} `;
} else if (node.simulated && node.simScore) {
score = `${node.simScore[side]} `;
}
const isWinner = node.winner !== null && node[side].teamId === node.winner;
const flag = display.team
? ` `
: ' ';
return `
${flag}
${display.label}
${score}
`;
}