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⚡ Optimize Canvas crawler fetching with concurrent requests #94

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⚡ Optimize Canvas crawler fetching with concurrent requests #94

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49 changes: 25 additions & 24 deletions extension/background/canvas-crawler.js
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Original file line number Diff line number Diff line change
Expand Up @@ -18,33 +18,34 @@ export async function crawlCanvasCourse(origin, courseId, fetchImpl = fetch) {
throw new Error('Canvas origin and courseId are required for course crawling.');
}

// 1. Fetch Course details & syllabus
const courseUrl = `${origin}/api/v1/courses/${courseId}?include[]=syllabus_body`;
const courseRes = await fetchImpl(courseUrl, { credentials: 'include' });
if (!courseRes.ok) {
throw new Error(`Failed to fetch Canvas course info (${courseRes.status})`);
}
const courseJson = await courseRes.json();

// 2. Fetch Assignments list (up to 50)
const assignmentsUrl = `${origin}/api/v1/courses/${courseId}/assignments?per_page=50`;
let assignments = [];
try {
const assignRes = await fetchImpl(assignmentsUrl, { credentials: 'include' });
if (assignRes.ok) {
const assignJson = await assignRes.json();
if (Array.isArray(assignJson)) {
assignments = assignJson.map((a) => ({
title: a.name || 'Untitled Assignment',
description: stripHtml(a.description || '').slice(0, 1000),
points: a.points_possible || 0,
dueAt: a.due_at || null
}));
}

const coursePromise = fetchImpl(courseUrl, { credentials: 'include' }).then(async (res) => {
if (!res.ok) {
throw new Error(`Failed to fetch Canvas course info (${res.status})`);
}
} catch (e) {
console.warn('Could not fetch assignments list:', e);
}
return res.json();
});

const assignmentsPromise = fetchImpl(assignmentsUrl, { credentials: 'include' })
.then(async (res) => {
if (!res.ok) return [];
const json = await res.json();
if (!Array.isArray(json)) return [];
return json.map((a) => ({
title: a.name || 'Untitled Assignment',
description: stripHtml(a.description || '').slice(0, 1000),
points: a.points_possible || 0,
dueAt: a.due_at || null
}));
})
.catch((e) => {
console.warn('Could not fetch assignments list:', e);
return [];
});

const [courseJson, assignments] = await Promise.all([coursePromise, assignmentsPromise]);

return {
title: courseJson.name || courseJson.course_code || 'Canvas Course',
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