Add class markbook tab

src/pages/timetable/ClassDetailPage.tsx

@@ -10,6 +10,7 @@ import {
 } from '@mui/icons-material';
 import { useAuth } from '../../contexts/AuthContext';
 import { ResultsWidget } from '../exam';
+import MarkbookPanel from './MarkbookPanel';
 
 const API_BASE = import.meta.env.VITE_API_BASE || import.meta.env.VITE_API_URL || '/api';
 
@@ -270,6 +271,7 @@ const ClassDetailPage: React.FC = () => {
             {/* Tabs */}
             <Tabs value={tab} onChange={(_, v) => setTab(v)} sx={{ borderBottom: 1, borderColor: 'divider', mb: 2 }}>
                 <Tab label={`Students (${cls.student_count})`} />
+                <Tab label="Markbook" />
                 <Tab label={`Requests${pendingCount > 0 ? ` (${pendingCount})` : ''}`} />
                 <Tab label={`Teachers (${cls.teachers.length})`} />
             </Tabs>
@@ -332,8 +334,13 @@ const ClassDetailPage: React.FC = () => {
                 </Box>
             )}
 
-            {/* Enrollment requests tab */}
+            {/* Markbook tab */}
             {tab === 1 && (
+                <MarkbookPanel classId={cls.id} accessToken={accessToken || ''} />
+            )}
+
+            {/* Enrollment requests tab */}
+            {tab === 2 && (
                 <Box>
                     {cls.enrollment_requests.length === 0 ? (
                         <Typography color="text.secondary" sx={{ py: 4, textAlign: 'center' }}>
@@ -392,7 +399,7 @@ const ClassDetailPage: React.FC = () => {
             )}
 
             {/* Teachers tab */}
-            {tab === 2 && (
+            {tab === 3 && (
                 <Box sx={{ display: 'flex', flexDirection: 'column', gap: 1 }}>
                     {cls.teachers.length === 0 ? (
                         <Typography color="text.secondary" sx={{ py: 4, textAlign: 'center' }}>

src/pages/timetable/MarkbookPanel.tsx

@@ -0,0 +1,319 @@
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import {
+  Alert,
+  Box,
+  Button,
+  CircularProgress,
+  Dialog,
+  DialogActions,
+  DialogContent,
+  DialogTitle,
+  Paper,
+  Stack,
+  Table,
+  TableBody,
+  TableCell,
+  TableContainer,
+  TableHead,
+  TableRow,
+  TextField,
+  Typography,
+} from '@mui/material';
+import AddIcon from '@mui/icons-material/Add';
+import DownloadIcon from '@mui/icons-material/Download';
+
+import { API_BASE } from '../../config/apiConfig';
+
+interface Assessment {
+  id: string;
+  title: string;
+  date?: string | null;
+  max_marks: number;
+}
+
+interface MarkbookStudent {
+  student_id: string;
+  student_name: string;
+  row_number: number;
+  marks: Record<string, number | null>;
+  total: number | null;
+  percentage: number | null;
+}
+
+interface AssessmentSummary {
+  assessment_id: string;
+  entered_count: number;
+  average_mark: number | null;
+  average_percentage: number | null;
+}
+
+interface MarkbookGrid {
+  assessments: Assessment[];
+  students: MarkbookStudent[];
+  assessment_summaries: AssessmentSummary[];
+  summary: {
+    student_count: number;
+    assessment_count: number;
+    entered_mark_count: number;
+    class_average_mark: number | null;
+  };
+}
+
+interface MarkbookPanelProps {
+  classId: string;
+  accessToken: string;
+}
+
+const MARKBOOK_BASE = `${API_BASE}/api/markbook`;
+
+function formatNumber(value: number | null | undefined) {
+  return value === null || value === undefined ? '—' : Number(value).toFixed(Number.isInteger(value) ? 0 : 1);
+}
+
+function markInputValue(value: number | null | undefined) {
+  return value === null || value === undefined ? '' : String(value);
+}
+
+function AddAssessmentDialog({
+  open,
+  saving,
+  onClose,
+  onCreate,
+}: {
+  open: boolean;
+  saving: boolean;
+  onClose: () => void;
+  onCreate: (payload: { title: string; date?: string; max_marks: number }) => Promise<void>;
+}) {
+  const [title, setTitle] = useState('');
+  const [date, setDate] = useState('');
+  const [maxMarks, setMaxMarks] = useState('100');
+
+  useEffect(() => {
+    if (open) {
+      setTitle('');
+      setDate('');
+      setMaxMarks('100');
+    }
+  }, [open]);
+
+  const handleCreate = async () => {
+    const parsedMax = Number(maxMarks);
+    if (!title.trim() || !Number.isFinite(parsedMax) || parsedMax <= 0) return;
+    await onCreate({ title: title.trim(), date: date || undefined, max_marks: parsedMax });
+  };
+
+  return (
+    <Dialog open={open} onClose={onClose} maxWidth="xs" fullWidth>
+      <DialogTitle>Add assessment column</DialogTitle>
+      <DialogContent sx={{ pt: 2 }}>
+        <Stack spacing={2} sx={{ mt: 1 }}>
+          <TextField label="Title" size="small" value={title} onChange={(e) => setTitle(e.target.value)} autoFocus />
+          <TextField label="Date" type="date" size="small" value={date} onChange={(e) => setDate(e.target.value)} InputLabelProps={{ shrink: true }} />
+          <TextField label="Max marks" type="number" size="small" value={maxMarks} onChange={(e) => setMaxMarks(e.target.value)} inputProps={{ min: 0, step: 0.5 }} />
+        </Stack>
+      </DialogContent>
+      <DialogActions sx={{ px: 3, pb: 2 }}>
+        <Button onClick={onClose} disabled={saving}>Cancel</Button>
+        <Button onClick={handleCreate} variant="contained" disabled={saving || !title.trim()} startIcon={saving ? <CircularProgress size={16} /> : <AddIcon />}>
+          Add
+        </Button>
+      </DialogActions>
+    </Dialog>
+  );
+}
+
+const MarkbookPanel: React.FC<MarkbookPanelProps> = ({ classId, accessToken }) => {
+  const [grid, setGrid] = useState<MarkbookGrid | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [savingKey, setSavingKey] = useState<string | null>(null);
+  const [addOpen, setAddOpen] = useState(false);
+  const [savingAssessment, setSavingAssessment] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const headers = useMemo(() => ({ Authorization: `Bearer ${accessToken}`, 'Content-Type': 'application/json' }), [accessToken]);
+
+  const load = useCallback(async () => {
+    if (!classId || !accessToken) return;
+    setLoading(true);
+    setError(null);
+    try {
+      const res = await fetch(`${MARKBOOK_BASE}/classes/${classId}/grid`, { headers });
+      const body = await res.json();
+      if (!res.ok) throw new Error(body.detail || 'Failed to load markbook');
+      setGrid(body);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setLoading(false);
+    }
+  }, [accessToken, classId, headers]);
+
+  useEffect(() => {
+    void load();
+  }, [load]);
+
+  const createAssessment = async (payload: { title: string; date?: string; max_marks: number }) => {
+    setSavingAssessment(true);
+    setError(null);
+    try {
+      const res = await fetch(`${MARKBOOK_BASE}/classes/${classId}/assessments`, {
+        method: 'POST',
+        headers,
+        body: JSON.stringify(payload),
+      });
+      const body = await res.json();
+      if (!res.ok) throw new Error(body.detail || 'Failed to create assessment');
+      setAddOpen(false);
+      await load();
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setSavingAssessment(false);
+    }
+  };
+
+  const saveMark = async (studentId: string, assessment: Assessment, raw: string) => {
+    const key = `${studentId}:${assessment.id}`;
+    const trimmed = raw.trim();
+    const mark = trimmed === '' ? null : Number(trimmed);
+    if (mark !== null && (!Number.isFinite(mark) || mark < 0 || mark > Number(assessment.max_marks))) {
+      setError(`Mark must be between 0 and ${assessment.max_marks}`);
+      return;
+    }
+    setSavingKey(key);
+    setError(null);
+    try {
+      const res = await fetch(`${MARKBOOK_BASE}/classes/${classId}/assessments/${assessment.id}/marks/${studentId}`, {
+        method: 'PUT',
+        headers,
+        body: JSON.stringify({ mark }),
+      });
+      const body = await res.json();
+      if (!res.ok) throw new Error(body.detail || 'Failed to save mark');
+      await load();
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    } finally {
+      setSavingKey(null);
+    }
+  };
+
+  const downloadCsv = async () => {
+    setError(null);
+    try {
+      const res = await fetch(`${MARKBOOK_BASE}/classes/${classId}/csv`, { headers });
+      const text = await res.text();
+      if (!res.ok) throw new Error(text || 'Failed to export CSV');
+      const blob = new Blob([text], { type: 'text/csv;charset=utf-8' });
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = `markbook-${classId}.csv`;
+      document.body.appendChild(a);
+      a.click();
+      a.remove();
+      URL.revokeObjectURL(url);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : String(e));
+    }
+  };
+
+  if (loading) {
+    return <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}><CircularProgress /></Box>;
+  }
+
+  if (!grid) {
+    return <Alert severity="error">{error || 'Could not load markbook'}</Alert>;
+  }
+
+  const summaryByAssessment = new Map(grid.assessment_summaries.map((s) => [s.assessment_id, s]));
+
+  return (
+    <Box>
+      {error && <Alert severity="error" onClose={() => setError(null)} sx={{ mb: 2 }}>{error}</Alert>}
+      <Stack direction="row" spacing={1} sx={{ mb: 2 }} justifyContent="space-between" alignItems="center" flexWrap="wrap" useFlexGap>
+        <Stack direction="row" spacing={1} flexWrap="wrap" useFlexGap>
+          <Typography variant="body2" color="text.secondary">{grid.summary.student_count} roster students</Typography>
+          <Typography variant="body2" color="text.secondary">{grid.summary.assessment_count} assessments</Typography>
+          <Typography variant="body2" color="text.secondary">Class average mark {formatNumber(grid.summary.class_average_mark)}</Typography>
+        </Stack>
+        <Stack direction="row" spacing={1}>
+          <Button size="small" variant="outlined" startIcon={<DownloadIcon />} onClick={downloadCsv} disabled={grid.assessments.length === 0}>CSV</Button>
+          <Button size="small" variant="contained" startIcon={<AddIcon />} onClick={() => setAddOpen(true)}>Add assessment</Button>
+        </Stack>
+      </Stack>
+
+      {grid.assessments.length === 0 ? (
+        <Paper variant="outlined" sx={{ py: 4, px: 2, textAlign: 'center' }}>
+          <Typography color="text.secondary" sx={{ mb: 2 }}>No assessment columns yet.</Typography>
+          <Button variant="contained" startIcon={<AddIcon />} onClick={() => setAddOpen(true)}>Add first assessment</Button>
+        </Paper>
+      ) : (
+        <TableContainer component={Paper} variant="outlined" sx={{ maxHeight: 620 }}>
+          <Table size="small" stickyHeader>
+            <TableHead>
+              <TableRow>
+                <TableCell sx={{ minWidth: 44 }}>#</TableCell>
+                <TableCell sx={{ minWidth: 180 }}>Student</TableCell>
+                {grid.assessments.map((assessment) => (
+                  <TableCell key={assessment.id} align="right" sx={{ minWidth: 130 }}>
+                    <Typography variant="body2" fontWeight={700}>{assessment.title}</Typography>
+                    <Typography variant="caption" color="text.secondary">
+                      {assessment.date ? `${new Date(assessment.date).toLocaleDateString('en-GB')} · ` : ''}/{assessment.max_marks}
+                    </Typography>
+                  </TableCell>
+                ))}
+                <TableCell align="right">Total</TableCell>
+                <TableCell align="right">%</TableCell>
+              </TableRow>
+            </TableHead>
+            <TableBody>
+              {grid.students.map((student) => (
+                <TableRow key={student.student_id}>
+                  <TableCell>{student.row_number}</TableCell>
+                  <TableCell>
+                    <Typography variant="body2" fontWeight={600}>{student.student_name || student.student_id}</Typography>
+                    <Typography variant="caption" color="text.secondary">{student.student_id}</Typography>
+                  </TableCell>
+                  {grid.assessments.map((assessment) => {
+                    const key = `${student.student_id}:${assessment.id}`;
+                    return (
+                      <TableCell key={assessment.id} align="right">
+                        <TextField
+                          size="small"
+                          type="number"
+                          defaultValue={markInputValue(student.marks[assessment.id])}
+                          onBlur={(e) => void saveMark(student.student_id, assessment, e.target.value)}
+                          disabled={savingKey === key}
+                          inputProps={{ min: 0, max: assessment.max_marks, step: 0.5, style: { textAlign: 'right' } }}
+                          sx={{ width: 86 }}
+                        />
+                      </TableCell>
+                    );
+                  })}
+                  <TableCell align="right"><strong>{formatNumber(student.total)}</strong></TableCell>
+                  <TableCell align="right">{formatNumber(student.percentage)}</TableCell>
+                </TableRow>
+              ))}
+              <TableRow sx={{ bgcolor: 'action.hover' }}>
+                <TableCell />
+                <TableCell><strong>Average</strong></TableCell>
+                {grid.assessments.map((assessment) => {
+                  const summary = summaryByAssessment.get(assessment.id);
+                  return <TableCell key={assessment.id} align="right"><strong>{formatNumber(summary?.average_mark)}</strong></TableCell>;
+                })}
+                <TableCell />
+                <TableCell />
+              </TableRow>
+            </TableBody>
+          </Table>
+        </TableContainer>
+      )}
+
+      <AddAssessmentDialog open={addOpen} saving={savingAssessment} onClose={() => setAddOpen(false)} onCreate={createAssessment} />
+    </Box>
+  );
+};
+
+export default MarkbookPanel;