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import {
Chart,
Colors,
LineController,
LineElement,
LinearScale,
PointElement,
TimeScale,
Tooltip,
} from 'chart.js'
import 'chartjs-adapter-date-fns';
Chart.register(
Colors,
LineController,
LineElement,
LinearScale,
PointElement,
TimeScale,
Tooltip,
);
document.addEventListener('DOMContentLoaded', async () => {
const chartCanvas = document.getElementById('chart');
const quizId = chartCanvas.dataset.quizId;
const apiUrl = `${process.env.ALBATROSS_BASE_PATH}/api/quizzes/${quizId}/chart`;
const apiResult = await fetch(apiUrl).then(res => res.json());
if (apiResult.error) {
return;
}
const stats = apiResult.stats;
// Filter best scores.
for (const s of stats) {
const bestScores = [];
for (const score of s.scores) {
if (bestScores.length === 0 || bestScores[bestScores.length - 1].code_size > score.code_size) {
bestScores.push(score);
}
}
s.scores = bestScores;
}
const scoresInChronologicalOrder = stats
.flatMap(s => s.scores.map(score => ({ ...score, user: s.user })))
.toSorted((a, b) => a.submitted_at - b.submitted_at);
const scoresAndRanksAtEachTime = (() => {
const result = [];
const currentScoresForUser = new Map();
for (const { user, submitted_at, code_size } of scoresInChronologicalOrder) {
currentScoresForUser.set(user.name, { user, submitted_at, code_size });
const ranking = currentScoresForUser
.values()
.toArray()
.toSorted(
(a, b) => a.code_size === b.code_size ? a.submitted_at - b.submitted_at : a.code_size - b.code_size,
);
const scores = new Map();
for (const [i, { user, code_size }] of ranking.entries()) {
scores.set(user.name, {
user,
code_size,
rank: i + 1,
});
}
result.push({ submitted_at: submitted_at, scores });
}
return result;
})();
const rankingHistory = (() => {
const result = new Map();
for (const { submitted_at, scores } of scoresAndRanksAtEachTime) {
for (const [username, { user, code_size, rank }] of scores.entries()) {
if (!result.has(username)) {
result.set(username, []);
}
const scores = result.get(username);
scores.push({ user, code_size, rank, submitted_at });
}
}
return result
.values()
.toArray()
.toSorted((a, b) => {
const finalRankA = a[a.length - 1].rank;
const finalRankB = b[b.length - 1].rank;
return finalRankA - finalRankB;
});
})();
new Chart(
chartCanvas,
{
type: 'line',
data: {
datasets: rankingHistory.map(s => ({
label: `${s[0].user.name}${s[0].user.is_admin ? ' (staff)' : ''}`,
data: s.map(row => ({ x: row.submitted_at * 1000, y: row.rank, code_size: row.code_size })),
}))
},
options: {
scales: {
x: {
type: 'time',
time: {
parsing: false,
display: false,
unit: 'day',
tooltipFormat: 'yyyy-MM-dd HH:mm:ss',
displayFormats: {
day: 'yyyy-MM-dd',
},
},
title: {
display: true,
text: '日時',
},
},
y: {
title: {
display: true,
text: '順位',
},
reverse: true,
min: 1,
offset: true,
},
},
plugins: {
tooltip: {
callbacks: {
label: (context) => {
const label = context.dataset.label;
const code_size = context.raw.code_size;
return `${label} (${code_size} byte)`;
},
},
},
},
},
},
);
});
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