Round 25: Substitute Teacher, School Newsletter, Career Guidance, Styling

- Substitute Teacher Management View: pool, absences, assignments, statistics, weekly schedule
- School Newsletter View: editor, templates, distribution, analytics, open/click tracking
- Student Career & Guidance View: career exploration, interest quiz, portfolio, goals, appointments
- 6 new Prisma models: SubstituteTeacher, TeacherAbsence, SubstitutionAssignment, CareerProfile, CareerGoal, CareerAppointment
- Enhanced Newsletter model with content, scheduling, and analytics fields
- Enhanced settings-view with gradient header, glassmorphism cards, danger zone
- Enhanced student-portal-view with animated welcome banner, quick action cards
- 16+ new API route files
- 300+ i18n keys added
- All views verified working in browser

src/app/api/substitutes/assignments/[id]/route.ts

@@ -0,0 +1,126 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { db } from '@/lib/db';
+
+// GET /api/substitutes/assignments/[id] - Get a single assignment
+export async function GET(_req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { id } = await params;
+    const assignment = await db.substitutionAssignment.findUnique({
+      where: { id },
+      include: {
+        absence: {
+          include: {
+            teacher: { select: { id: true, firstName: true, lastName: true } },
+          },
+        },
+        substitute: { select: { id: true, firstName: true, lastName: true, rating: true } },
+        classGroup: { select: { id: true, name: true } },
+        subject: { select: { id: true, name: true } },
+      },
+    });
+
+    if (!assignment) {
+      return NextResponse.json({ error: 'Assignment not found' }, { status: 404 });
+    }
+
+    return NextResponse.json(assignment);
+  } catch (error) {
+    console.error('Error fetching assignment:', error);
+    return NextResponse.json({ error: 'Failed to fetch assignment' }, { status: 500 });
+  }
+}
+
+// PUT /api/substitutes/assignments/[id] - Update an assignment
+export async function PUT(req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { id } = await params;
+    const body = await req.json();
+
+    const existing = await db.substitutionAssignment.findUnique({ where: { id } });
+    if (!existing) {
+      return NextResponse.json({ error: 'Assignment not found' }, { status: 404 });
+    }
+
+    const data: Record<string, unknown> = {};
+    const simpleFields = ['status', 'notes', 'room', 'period', 'substituteId', 'classGroupId', 'subjectId'];
+
+    for (const field of simpleFields) {
+      if (body[field] !== undefined) data[field] = body[field];
+    }
+
+    if (body.date) data.date = new Date(body.date);
+
+    const assignment = await db.substitutionAssignment.update({
+      where: { id },
+      data,
+      include: {
+        absence: {
+          include: {
+            teacher: { select: { id: true, firstName: true, lastName: true } },
+          },
+        },
+        substitute: { select: { id: true, firstName: true, lastName: true, rating: true } },
+        classGroup: { select: { id: true, name: true } },
+        subject: { select: { id: true, name: true } },
+      },
+    });
+
+    // Check if all assignments for this absence are covered
+    if (body.status === 'confirmed' || body.status === 'completed') {
+      const absence = await db.teacherAbsence.findUnique({
+        where: { id: existing.absenceId },
+        include: { assignments: true },
+      });
+
+      if (absence && absence.assignments.every(a => a.status === 'confirmed' || a.status === 'completed')) {
+        await db.teacherAbsence.update({
+          where: { id: existing.absenceId },
+          data: { status: 'covered' },
+        });
+      }
+    }
+
+    return NextResponse.json(assignment);
+  } catch (error) {
+    console.error('Error updating assignment:', error);
+    return NextResponse.json({ error: 'Failed to update assignment' }, { status: 500 });
+  }
+}
+
+// DELETE /api/substitutes/assignments/[id] - Delete an assignment
+export async function DELETE(_req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const { id } = await params;
+
+    const existing = await db.substitutionAssignment.findUnique({ where: { id } });
+    if (!existing) {
+      return NextResponse.json({ error: 'Assignment not found' }, { status: 404 });
+    }
+
+    // Decrement the substitute's totalAssignments count
+    await db.substituteTeacher.update({
+      where: { id: existing.substituteId },
+      data: { totalAssignments: { decrement: 1 } },
+    });
+
+    await db.substitutionAssignment.delete({ where: { id } });
+
+    // Check if the absence is still covered
+    const absence = await db.teacherAbsence.findUnique({
+      where: { id: existing.absenceId },
+      include: { assignments: true },
+    });
+
+    if (absence && absence.assignments.length > 0 && !absence.assignments.every(a => a.status === 'confirmed' || a.status === 'completed')) {
+      await db.teacherAbsence.update({
+        where: { id: existing.absenceId },
+        data: { status: 'reported' },
+      });
+    }
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error('Error deleting assignment:', error);
+    return NextResponse.json({ error: 'Failed to delete assignment' }, { status: 500 });
+  }
+}