Files
Learn_System/frontend/js/exam-prep/practice.js
T
Maxim Dolgolyov 3cc52e21b0 feat(exam9): link tasks to textbook + difficulty-ordered random + topic exclusion
Practice (random) now picks tasks by ascending difficulty so the first
slot is always level 1 and the session ramps up. Adds ?exclude= to drop
specific subtopics from the random pool, with a per-section checkbox
modal in the UI.

Each task carries a topic_ref (textbook chapter + paragraph) shown as
a 'Учить тему · §N' button next to the solution, deep-linking to the
right section of /textbook/<slug>. Mapping seeded for all 15 math9
subtopics in migration 028.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-29 14:55:47 +03:00

352 lines
14 KiB
JavaScript

'use strict';
/* ──────────────────────────────────────────────────────────────────
Practice view — random / unsolved tasks trainer.
Renders a batch of N TaskCards; once all are answered (or user
clicks "Завершить"), shows a summary card with score + restart.
────────────────────────────────────────────────────────────────── */
(async function () {
await EP.boot();
const examKey = EP.examKey;
const main = document.getElementById('ep-main');
// Per-session state
let batch = null; // { strategy, session_id, tasks: [...] }
let strategy = readStrategyFromUrl() || readPersistedStrategy() || 'random';
let count = readPersistedCount();
let excludeSlugs = readPersistedExclude(); // Set<slug>
let topicSections = null; // { sections: [...] } — lazy-loaded
let finalized = false;
const results = new Map(); // taskId -> { isCorrect: 0|1|null, attempts: number }
function readStrategyFromUrl() {
const m = location.search.match(/[?&]strategy=(random|unsolved|weak)/);
return m ? m[1] : null;
}
/* ── Strategy persistence (local pref) ──────────────────────── */
function readPersistedStrategy() {
try { return localStorage.getItem(`exam_prep_${examKey}_practice_strategy`); } catch { return null; }
}
function persistStrategy(s) {
try { localStorage.setItem(`exam_prep_${examKey}_practice_strategy`, s); } catch {}
}
function readPersistedCount() {
try {
const n = Number(localStorage.getItem(`exam_prep_${examKey}_practice_count`));
return (n >= 5 && n <= 30) ? n : 10;
} catch { return 10; }
}
function persistCount(n) {
try { localStorage.setItem(`exam_prep_${examKey}_practice_count`, String(n)); } catch {}
}
function readPersistedExclude() {
try {
const raw = localStorage.getItem(`exam_prep_${examKey}_practice_exclude`) || '';
return new Set(raw.split(',').filter(Boolean));
} catch { return new Set(); }
}
function persistExclude(set) {
try {
localStorage.setItem(`exam_prep_${examKey}_practice_exclude`, Array.from(set).join(','));
} catch {}
}
/* ── Boot: show controls and load first batch ───────────────── */
await loadBatch();
/* ── Controls bar ───────────────────────────────────────────── */
function controlsHTML() {
const opts = [5, 10, 15, 20].map(n => `
<option value="${n}" ${n === count ? 'selected' : ''}>${n} задач</option>`).join('');
const excludeBadge = excludeSlugs.size
? `<span class="pr-exclude-count">${excludeSlugs.size}</span>` : '';
// Exclude only applies to the difficulty-ordered random pool. Hide
// for other strategies so users don't think it filters them too.
const showExclude = strategy === 'random';
return `
<div class="pr-controls">
<div class="pr-controls-row">
<div class="pr-strategy">
<button class="pr-strategy-btn ${strategy === 'random' ? 'active' : ''}" data-strat="random">
<i data-lucide="shuffle"></i> Случайные
</button>
<button class="pr-strategy-btn ${strategy === 'unsolved' ? 'active' : ''}" data-strat="unsolved">
<i data-lucide="circle-dashed"></i> Только нерешённые
</button>
<button class="pr-strategy-btn ${strategy === 'weak' ? 'active' : ''}" data-strat="weak"
title="Топ-3 темы с худшей точностью (нужно ≥3 попыток в теме)">
<i data-lucide="target"></i> Слабые темы
</button>
</div>
<div class="pr-count-pick">
<label>Размер сессии:</label>
<select class="pr-count-select">${opts}</select>
</div>
${showExclude ? `
<button class="ep-btn pr-exclude-btn" title="Исключить темы из пула случайных задач">
<i data-lucide="filter-x"></i> Исключить темы ${excludeBadge}
</button>` : ''}
<button class="ep-btn ep-btn-primary pr-restart">
<i data-lucide="rotate-cw"></i> Новая сессия
</button>
</div>
${strategy === 'random' ? `
<div class="pr-difficulty-note">
<i data-lucide="bar-chart-2"></i>
Задачи идут по возрастанию сложности: 1-я всегда лёгкая, к концу — сложнее.
</div>` : ''}
<div class="pr-progress" id="pr-progress"></div>
</div>`;
}
function renderProgress() {
const el = document.getElementById('pr-progress');
if (!el || !batch) return;
const total = batch.tasks.length;
const answered = Array.from(results.values()).filter(r => r.isCorrect != null).length;
const correct = Array.from(results.values()).filter(r => r.isCorrect === 1).length;
const pct = total ? Math.round((answered / total) * 100) : 0;
el.innerHTML = `
<div class="pr-progress-meta">
<span>Прогресс сессии</span>
<span class="pr-progress-counts">${answered}/${total} · ${correct} верно</span>
</div>
<div class="ep-bar"><div class="ep-bar-fill" style="width:${pct}%"></div></div>`;
}
/* ── Batch loading + render ─────────────────────────────────── */
async function loadBatch() {
finalized = false;
results.clear();
main.innerHTML = controlsHTML() + `
<div class="ep-empty">
<i data-lucide="loader-circle"></i>
<h4>Загрузка задач…</h4>
</div>`;
if (window.lucide) lucide.createIcons();
wireControls();
try {
const query = { count, strategy };
if (strategy === 'random' && excludeSlugs.size) {
query.exclude = Array.from(excludeSlugs).join(',');
}
batch = await EP.api.getPracticeNext(examKey, query);
} catch (e) {
main.querySelector('.ep-empty').outerHTML = `
<div class="ep-empty">
<i data-lucide="alert-triangle"></i>
<h4>Не удалось загрузить задачи</h4>
<p>${escapeHtml(e.message || String(e))}</p>
</div>`;
if (window.lucide) lucide.createIcons();
return;
}
if (!batch.tasks.length) {
main.querySelector('.ep-empty').outerHTML = `
<div class="ep-empty">
<i data-lucide="party-popper"></i>
<h4>Не нашлось задач по этой стратегии</h4>
<p>Попробуйте другую — или это знак, что вы уже всё решили.</p>
</div>`;
if (window.lucide) lucide.createIcons();
return;
}
renderBatch();
}
function renderBatch() {
// Replace empty placeholder with task list
const empty = main.querySelector('.ep-empty');
const taskContainer = document.createElement('div');
taskContainer.className = 'pr-tasks';
if (empty) empty.replaceWith(taskContainer);
batch.tasks.forEach((task, i) => {
results.set(task.id, { isCorrect: null, attempts: 0 });
EP.TaskCard.render(taskContainer, task, {
mode: 'practice',
sessionId: batch.session_id,
numbering: i + 1,
onAttempt: ({ taskId, isCorrect, attempt }) => {
if (isCorrect == null) return; // ignore solution-only events
const r = results.get(taskId);
if (!r) return;
// We record only the FIRST attempt result toward batch score.
if (r.isCorrect == null) r.isCorrect = isCorrect;
r.attempts = attempt || r.attempts + 1;
renderProgress();
maybeFinalize();
},
});
});
// Bottom: "Завершить" button (allow finalizing early)
const finish = document.createElement('div');
finish.className = 'pr-finish-row';
finish.innerHTML = `
<button class="ep-btn pr-finish-btn">
<i data-lucide="flag"></i> Завершить и показать итог
</button>`;
main.appendChild(finish);
finish.querySelector('.pr-finish-btn').onclick = () => finalize();
renderProgress();
if (window.lucide) lucide.createIcons();
}
function maybeFinalize() {
const answered = Array.from(results.values()).filter(r => r.isCorrect != null).length;
if (answered === batch.tasks.length && !finalized) {
finalize();
}
}
function finalize() {
if (finalized) return;
finalized = true;
const total = batch.tasks.length;
const answered = Array.from(results.values()).filter(r => r.isCorrect != null).length;
const correct = Array.from(results.values()).filter(r => r.isCorrect === 1).length;
const acc = answered ? Math.round((correct / answered) * 100) : 0;
const summary = document.createElement('div');
summary.className = 'pr-summary ep-card';
summary.innerHTML = `
<div class="pr-summary-grid">
<div class="pr-summary-stat">
<div class="ep-stat-label">Решено</div>
<div class="ep-stat-value ep-violet">${answered} / ${total}</div>
</div>
<div class="pr-summary-stat">
<div class="ep-stat-label">Верно</div>
<div class="ep-stat-value ${acc >= 70 ? 'ep-good' : 'ep-warn'}">${correct}</div>
<div class="ep-stat-sub">${acc}% точности</div>
</div>
<div class="pr-summary-stat">
<div class="ep-stat-label">Стратегия</div>
<div class="ep-stat-value" style="font-size:1.1rem">${strategyLabel(strategy)}</div>
</div>
</div>
<div class="ep-cta-row">
<button class="ep-btn ep-btn-primary" id="pr-summary-restart">
<i data-lucide="rotate-cw"></i> Ещё ${count} задач
</button>
<a class="ep-btn" href="/exam-prep/${examKey}">
<i data-lucide="gauge"></i> На дашборд
</a>
</div>`;
main.appendChild(summary);
summary.querySelector('#pr-summary-restart').onclick = () => loadBatch();
if (window.lucide) lucide.createIcons();
summary.scrollIntoView({ behavior: 'smooth', block: 'start' });
}
/* ── Wire controls (strategy toggle, count select, restart) ── */
function wireControls() {
main.querySelectorAll('[data-strat]').forEach(btn => {
btn.onclick = () => {
if (btn.disabled) return;
strategy = btn.dataset.strat;
persistStrategy(strategy);
loadBatch();
};
});
const sel = main.querySelector('.pr-count-select');
if (sel) {
sel.onchange = () => {
count = Number(sel.value) || 10;
persistCount(count);
};
}
const restart = main.querySelector('.pr-restart');
if (restart) restart.onclick = () => loadBatch();
const excludeBtn = main.querySelector('.pr-exclude-btn');
if (excludeBtn) excludeBtn.onclick = () => openExcludeModal();
}
/* ── Exclude-topics modal ───────────────────────────────────── */
async function openExcludeModal() {
if (!topicSections) {
try {
topicSections = await EP.api.listTopics(examKey);
} catch (e) {
LS.toast?.('Не удалось загрузить темы', 'error');
return;
}
}
const sections = topicSections.sections || [];
const sectionsHtml = sections.map(sec => {
const items = (sec.subtopics || []).map(st => {
const checked = excludeSlugs.has(st.slug) ? 'checked' : '';
return `
<label class="pr-ex-item">
<input type="checkbox" value="${st.slug}" ${checked} />
<span class="pr-ex-title">${escapeHtml(st.title)}</span>
<span class="pr-ex-meta">${st.total || 0} задач</span>
</label>`;
}).join('');
return `
<div class="pr-ex-section">
<div class="pr-ex-section-head">
<span>${escapeHtml(sec.title)}</span>
<button type="button" class="pr-ex-toggle-all" data-section="${sec.slug}">Все</button>
</div>
<div class="pr-ex-items" data-section-items="${sec.slug}">${items}</div>
</div>`;
}).join('');
const body = `
<div class="pr-ex-form">
<p class="pr-ex-hint">Отмеченные темы не попадут в случайный пул. Сложность распределения сохраняется.</p>
${sectionsHtml || '<div class="pr-ex-empty">Темы не настроены</div>'}
</div>`;
const m = LS.modal({
title: 'Исключить темы из пула',
content: body,
size: 'md',
actions: [
{ label: 'Сбросить', onClick: () => {
m.body.querySelectorAll('input[type="checkbox"]').forEach(c => c.checked = false);
} },
{ label: 'Отмена', onClick: () => m.close() },
{ label: 'Применить', primary: true, onClick: () => {
const checked = Array.from(m.body.querySelectorAll('input[type="checkbox"]:checked')).map(c => c.value);
excludeSlugs = new Set(checked);
persistExclude(excludeSlugs);
m.close();
loadBatch();
} },
],
});
// "Все" toggle per section
m.body.querySelectorAll('.pr-ex-toggle-all').forEach(btn => {
btn.onclick = () => {
const items = m.body.querySelector(`[data-section-items="${btn.dataset.section}"]`);
if (!items) return;
const boxes = items.querySelectorAll('input[type="checkbox"]');
const allChecked = Array.from(boxes).every(b => b.checked);
boxes.forEach(b => b.checked = !allChecked);
};
});
}
function escapeHtml(s) {
return String(s || '').replace(/[&<>"']/g, c => ({ '&':'&amp;', '<':'&lt;', '>':'&gt;', '"':'&quot;', "'":'&#39;' }[c]));
}
function strategyLabel(s) {
if (s === 'unsolved') return 'Нерешённые';
if (s === 'weak') return 'Слабые темы';
if (s === 'unsolved-fallback') return 'Нерешённые (fallback)';
return 'Случайные';
}
})();