adminandClaude Opus 4.8
8fe6ad00f4
- Migration: student role, students.user_id, grade_categories/grade_scale (school defaults + per-class override), assignments, grades + RLS - Classes area (nav): list/create classes, class page with Gradebook / Roster / Grading setup tabs; teachers see their classes, admins all - Weighted-category grade calc -> letter scale (shared helper) - Roster assignment (admin), assignment + grade entry (teacher/admin) - Student profile: view-only Grades tab (parents/students) - Portal access: create parent OR student logins linked to the student Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
37 lines
1.7 KiB
TypeScript
37 lines
1.7 KiB
TypeScript
// Weighted-category grade calculation shared by the gradebook and the grade views.
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export type Cat = { id: string; name: string; weight: number };
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export type Scale = { letter: string; min_percent: number };
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export type Assn = { id: string; category_id: string | null; max_points: number };
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export type Grd = { assignment_id: string; student_id: string; points: number | null };
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// Overall percent for a student: weighted average across categories that have graded work.
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export function studentPercent(studentId: string, assignments: Assn[], grades: Grd[], categories: Cat[]): number | null {
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const byCat: Record<string, { earned: number; possible: number }> = {};
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for (const a of assignments) {
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if (!a.category_id) continue;
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const g = grades.find((x) => x.assignment_id === a.id && x.student_id === studentId && x.points != null);
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if (!g) continue;
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const b = byCat[a.category_id] ?? { earned: 0, possible: 0 };
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b.earned += Number(g.points);
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b.possible += Number(a.max_points);
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byCat[a.category_id] = b;
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}
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let weighted = 0, totalW = 0;
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for (const c of categories) {
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const b = byCat[c.id];
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if (!b || b.possible === 0) continue;
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weighted += (b.earned / b.possible) * 100 * Number(c.weight);
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totalW += Number(c.weight);
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}
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return totalW === 0 ? null : weighted / totalW;
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}
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export function letterFor(pct: number | null, scale: Scale[]): string {
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if (pct == null) return "—";
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const s = [...scale].sort((a, b) => Number(b.min_percent) - Number(a.min_percent));
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for (const r of s) if (pct >= Number(r.min_percent)) return r.letter;
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return s.length ? s[s.length - 1].letter : "—";
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}
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export const fmtPct = (pct: number | null) => (pct == null ? "—" : `${pct.toFixed(1)}%`);
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