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Prereq implementation #29

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102 changes: 100 additions & 2 deletions src/components/CourseDetailPanel.tsx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import type { Course } from '@/types/course';
import type { Course, Prereq } from '@/types/course';
import { useEffect, useRef } from 'react';

interface Props {
Expand All @@ -16,6 +16,82 @@ interface Props {
// open/close behaviour (renders nothing when `course` is null), and the drawer
// shell. Rendering the actual course fields and styling is in scope for the ticket.

function renderPrereq(node: Prereq, isRoot: boolean): React.ReactNode {
switch (node.kind) {
case 'course': {
if (node.minGrade !== undefined) {
return (
<span className="break-words">
{node.code} [Grade &ge; {node.minGrade}]
</span>
);
}

return <span className="break-words">{node.code}</span>;
}

case 'all': {
if (node.of.length === 1) {
return renderPrereq(node.of[0], false);
}

return (
<>
<p>{isRoot ? 'Complete all of the following: ' : 'All of: '}</p>
<ul className="list-disc pl-5 space-y-1">
{node.of.map((prereq: Prereq) => (
<li>{renderPrereq(prereq, false)}</li>
))}
</ul>
</>
);
}

case 'any': {
if (node.of.length === 1) {
return renderPrereq(node.of[0], false);
}

return (
<>
<p>{isRoot ? 'Complete any of the following: ' : 'Any of: '}</p>
<ul className="list-disc pl-5 space-y-1">
{node.of.map((prereq: Prereq) => (
<li>{renderPrereq(prereq, false)}</li>
))}
</ul>
</>
);
}

case 'credits': {
return (
<>
<p>
{isRoot
? `Complete ${node.credits} credit(s) from:`
: `${node.credits} credit(s) from:`}
</p>
<ul className="list-disc pl-5 space-y-1">
{node.from.map((prereq: Prereq) => (
<li>{renderPrereq(prereq, false)}</li>
))}
</ul>
</>
);
}

case 'raw': {
return <span className="italic text-gray-500">{node.text}</span>;
}

default: {
const _exhaustive: never = node;
return _exhaustive;
}
}
}

export default function CourseDetailPanel({ course, onClose }: Props) {
const panelRef = useRef<HTMLElement>(null);
const prevFocusRef = useRef<HTMLElement | null>(null);
Expand Down Expand Up @@ -84,10 +160,32 @@ export default function CourseDetailPanel({ course, onClose }: Props) {
</div>
)}

{course.prereqRaw && course.prereq && (
<div>
<h3 className="font-semibold mb-2">Prerequisite(s)</h3>
<h4 className="font-semibold ml-3">Calendar text</h4>
<p className="ml-6 mb-2">{course.prereqRaw}</p>
{course.prereq.kind !== 'raw' && (
<>
<h4 className="font-semibold ml-3">Structured view</h4>
<div className="ml-6">{renderPrereq(course.prereq, true)}</div>
</>
)}
</div>
)}

{course.prereqRaw && (
<div>
<h3 className="font-semibold mb-2">Prerequisite(s)</h3>
<h4 className="font-semibold ml-3">Calendar text</h4>
<p className="ml-6 mb-2">{course.prereqRaw}</p>
</div>
)}

{course.prereqRaw === '' && course.prereq === null && (
<div>
<h3 className="font-semibold">Prerequisite(s)</h3>
<p>{course.prereqRaw}</p>
<p className="ml-4">None</p>
</div>
)}
</div>
Expand Down
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