feat: 登录态持久化 + 禁用按钮灰色 + 登录提示精简 + 全局美化 + 独立数据看板页

api.php

@@ -119,6 +119,76 @@ try {
             ];
             ny_ok($result);
 
+        // ---------------- 数据看板（按班级聚合，面向班主任/学生整体情况） ----------------
+        case 'dashboard':
+            $projectId = (string)($_GET['projectId'] ?? '');
+            if ($projectId === '') {
+                ny_fail('请先选择问卷/考试');
+            }
+            $nameQid = (string)($_GET['nameQid'] ?? '');
+            $c = cfg();
+            $result = DataService::build($c, $projectId, $nameQid);
+            $fsMap = is_array($c['full_scores'] ?? null) ? $c['full_scores'] : [];
+            $fs = isset($fsMap[$projectId]) ? (int)$fsMap[$projectId] : (int)($c['full_score'] ?? 100);
+            if ($fs < 1) {
+                $fs = 100;
+            }
+
+            $students = $result['roster'] ?: [];
+            $rows     = $result['rows'] ?: [];
+
+            $byCls = [];
+            foreach ($students as $s) {
+                $k = trim((string)($s['cls'] ?? '')) ?: '（未分班）';
+                $byCls[$k][] = $s;
+            }
+            $rowsByCls = [];
+            foreach ($rows as $r) {
+                $k = trim((string)($r['cls'] ?? '')) ?: '（未分班）';
+                $rowsByCls[$k][] = $r;
+            }
+
+            $classes = [];
+            foreach ($byCls as $k => $stu) {
+                $rs       = $rowsByCls[$k] ?? [];
+                $total    = count($stu);
+                $submitted = count($rs);
+                $scores   = array_values(array_filter(array_map(static fn($r) => $r['score'] ?? null, $rs), static fn($v) => $v !== null));
+                $avg      = $scores !== [] ? round(array_sum($scores) / count($scores), 2) : null;
+                $pass     = count(array_filter($rs, static fn($r) => ($r['score'] ?? null) !== null && ($r['score'] >= 0.6 * $fs)));
+                $passRate = $submitted > 0 ? round($pass / $submitted * 100, 1) : 0;
+                $durs     = array_values(array_filter(array_map(static fn($r) => $r['duration'] ?? null, $rs), static fn($v) => $v !== null));
+                $avgDur   = $durs !== [] ? (int)round(array_sum($durs) / count($durs)) : null;
+                $classes[] = [
+                    'class'         => $k,
+                    'total'         => $total,
+                    'submitted'     => $submitted,
+                    'absent'        => max(0, $total - $submitted),
+                    'rate'          => $total > 0 ? round($submitted / $total * 100, 1) : 0,
+                    'avg'           => $avg,
+                    'pass_rate'     => $passRate,
+                    'max'           => $scores !== [] ? max($scores) : null,
+                    'min'           => $scores !== [] ? min($scores) : null,
+                    'avg_duration'  => $avgDur,
+                ];
+            }
+            usort($classes, static function (array $a, array $b): int {
+                $an = is_numeric($a['class']) ? (int)$a['class'] : $a['class'];
+                $bn = is_numeric($b['class']) ? (int)$b['class'] : $b['class'];
+                if (is_int($an) && is_int($bn)) {
+                    return $an <=> $bn;
+                }
+                return strcmp((string)$a['class'], (string)$b['class']);
+            });
+
+            ny_ok([
+                'project'    => $result['project'],
+                'full_score' => $fs,
+                'overall'    => $result['stats'],
+                'classes'    => $classes,
+                'updated_at' => $result['updated_at'],
+            ]);
+
         // ---------------- 名单 ----------------
         case 'roster':
             ny_ok(['students' => Roster::all(), 'meta' => Roster::meta()]);