<?php
/**
 * 验证 aggregateByStudent 的"考试次数 / 历史明细"修复：
 * 多次提交的学生在 dedupe=true（默认）与 dedupe=false 两种情况下，
 * attempts 都应等于真实提交次数、attempts_list 都应包含全部提交；
 * dedupe 仅影响"代表成绩"那一行取最新或最高分。
 */
require __DIR__ . '/../bootstrap.php';

$fail = 0;
$pass = 0;
function check(string $name, bool $cond, string $detail = ''): void
{
    global $fail, $pass;
    if ($cond) {
        $pass++;
        echo "  ✅ {$name}\n";
    } else {
        $fail++;
        echo "  ❌ {$name}  {$detail}\n";
    }
}

/**
 * 构造一个学生的多次提交（模拟 第二周测试 中"陈苏豫 11次"这类数据）
 * 提交时间递增（旧 -> 新），分数有高有低。
 */
function makeRows(string $sid, array $scoresByTime): array
{
    $rows = [];
    $t = 1000; // 递增时间戳
    foreach ($scoresByTime as $sc) {
        $t += 600;
        $rows[] = [
            'sid'         => $sid,
            'name'        => '测试生',
            'cls'         => '1班',
            'grp'         => 'A',
            'score'       => $sc,
            'submit_ts'   => $t,
            'submit_at'   => date('Y-m-d H:i:s', $t),
            'duration'    => 120,
            'duration_txt'=> '2分0秒',
            'answer_id'   => 'ans-' . $t,
            'matched'     => true,
            'temp_save'   => false,
        ];
    }
    return $rows;
}

echo "== dedupe=true（默认：代表成绩取最新一份）==\n";
// 11 次提交：分数各不相同，最新一份是 84.0，最高是 98.0
$scores = [84.0, 98.0, 96.0, 96.0, 96.0, 94.0, 94.0, 96.0, 90.0, 88.0, 98.0];
$rows = makeRows('S001', $scores);
$agg = DataService::aggregateByStudent($rows, true);
check('聚合后只有 1 行（一人一行）', count($agg['rows']) === 1);
$r = $agg['rows'][0];
check('attempts = 11（真实次数，而非被吞成 1）', ($r['attempts'] ?? 0) === 11, 'got ' . var_export($r['attempts'] ?? null, true));
check('attempts_list 含 11 条（历史可展开全部）', count($r['attempts_list'] ?? []) === 11, 'got ' . count($r['attempts_list'] ?? []));
check('best_score = 98.0（跨全部尝试的真实最高分）', (float)($r['best_score'] ?? -1) === 98.0, 'got ' . var_export($r['best_score'] ?? null, true));
// 代表成绩 = 最新一份（数组中最后一个时间 = 98.0，因为 scores 数组最后一个是 98.0；注意最新提交对应最后构造的 98.0）
check('代表成绩取最新提交 = 98.0', (float)($r['score'] ?? -1) === 98.0, 'got ' . var_export($r['score'] ?? null, true));
check('attempts_list 项数 idx 连续 1..11', (int)($r['attempts_list'][10]['idx'] ?? 0) === 11);
check('attempts_list 至少一条 is_best（最高分标记）', count(array_filter($r['attempts_list'], fn($a) => !empty($a['is_best']))) >= 1);

echo "\n== dedupe=false（代表成绩取最高分）==\n";
$agg2 = DataService::aggregateByStudent($rows, false);
$r2 = $agg2['rows'][0];
check('attempts = 11（与 dedupe 无关，始终真实）', ($r2['attempts'] ?? 0) === 11, 'got ' . var_export($r2['attempts'] ?? null, true));
check('attempts_list 含 11 条', count($r2['attempts_list'] ?? []) === 11, 'got ' . count($r2['attempts_list'] ?? []));
check('代表成绩取最高分 = 98.0', (float)($r2['score'] ?? -1) === 98.0, 'got ' . var_export($r2['score'] ?? null, true));
check('best_score = 98.0', (float)($r2['best_score'] ?? -1) === 98.0, 'got ' . var_export($r2['best_score'] ?? null, true));

echo "\n== 重考低分也应被统计（历史含低分，且因提交时间更新能被发现）==\n";
// 先考 90，后重考 70（更低）：考试次数必须=2，最新提交=70
$rows3 = makeRows('S002', [90.0, 70.0]);
$agg3 = DataService::aggregateByStudent($rows3, true);
$r3 = $agg3['rows'][0];
check('attempts = 2', ($r3['attempts'] ?? 0) === 2, 'got ' . var_export($r3['attempts'] ?? null, true));
check('attempts_list = 2 条（含低分重考）', count($r3['attempts_list'] ?? []) === 2);
check('代表成绩取最新 = 70.0', (float)($r3['score'] ?? -1) === 70.0, 'got ' . var_export($r3['score'] ?? null, true));
check('last_submit_ts 指向最新提交（重考可被高亮发现）', ($r3['last_submit_ts'] ?? 0) === $rows3[1]['submit_ts']);

echo "\n== 仅 1 次提交不受影响 ==\n";
$rows4 = makeRows('S003', [85.0]);
$agg4 = DataService::aggregateByStudent($rows4, true);
$r4 = $agg4['rows'][0];
check('单次提交 attempts = 1', ($r4['attempts'] ?? 0) === 1);
check('单次提交 attempts_list = 1', count($r4['attempts_list'] ?? []) === 1);

echo "\n== 按提交时间年月日分组：每个分类内标记当日最高 ==\n";
/** 按 [时间戳, 分数] 造行；ts=0 表示时间未知 */
function makeRowsAt(string $sid, array $items): array
{
    $rows = [];
    foreach ($items as $it) {
        [$ts, $sc] = $it;
        $rows[] = [
            'sid'          => $sid,
            'name'         => '测试生',
            'cls'          => '1班',
            'grp'          => 'A',
            'score'        => $sc,
            'submit_ts'    => $ts,
            'submit_at'    => $ts > 0 ? date('Y-m-d H:i:s', $ts) : '-',
            'duration'     => 120,
            'duration_txt' => '2分0秒',
            'answer_id'    => 'ans-' . $ts,
            'matched'      => true,
            'temp_save'    => false,
        ];
    }
    return $rows;
}
// 09-08 三次（70/95/88），09-09 两次（60/90）
$rows5 = makeRowsAt('S005', [
    [strtotime('2026-09-08 09:00:00'), 70.0],
    [strtotime('2026-09-08 11:00:00'), 95.0],
    [strtotime('2026-09-08 15:00:00'), 88.0],
    [strtotime('2026-09-09 10:00:00'), 60.0],
    [strtotime('2026-09-09 14:00:00'), 90.0],
]);
$agg5 = DataService::aggregateByStudent($rows5, true);
$r5   = $agg5['rows'][0];
$al5  = $r5['attempts_list'];
check('5 次提交 attempts_list = 5', count($al5) === 5);
check('前 3 条归属 2026-09-08', ($al5[0]['day'] ?? '') === '2026-09-08' && ($al5[2]['day'] ?? '') === '2026-09-08',
    'got ' . ($al5[0]['day'] ?? '?'));
check('后 2 条归属 2026-09-09', ($al5[3]['day'] ?? '') === '2026-09-09' && ($al5[4]['day'] ?? '') === '2026-09-09',
    'got ' . ($al5[3]['day'] ?? '?'));
check('09-08 当天次数 = 3', ($al5[0]['day_count'] ?? 0) === 3, 'got ' . ($al5[0]['day_count'] ?? '?'));
check('09-09 当天次数 = 2', ($al5[3]['day_count'] ?? 0) === 2, 'got ' . ($al5[3]['day_count'] ?? '?'));
$dayBestIdx = array_values(array_filter($al5, fn($a) => !empty($a['day_best'])));
check('每个分类各标记 1 个当日最高（共 2 个）', count($dayBestIdx) === 2, 'got ' . count($dayBestIdx));
check('09-08 当日最高 = 95（第 2 次）', (int)($dayBestIdx[0]['idx'] ?? 0) === 2 && (float)($dayBestIdx[0]['score'] ?? -1) === 95.0,
    'got idx=' . ($dayBestIdx[0]['idx'] ?? '?') . ' score=' . ($dayBestIdx[0]['score'] ?? '?'));
check('09-09 当日最高 = 90（第 5 次）', (int)($dayBestIdx[1]['idx'] ?? 0) === 5 && (float)($dayBestIdx[1]['score'] ?? -1) === 90.0,
    'got idx=' . ($dayBestIdx[1]['idx'] ?? '?') . ' score=' . ($dayBestIdx[1]['score'] ?? '?'));
check('全局最佳仍是 95（第 2 次）', (int)($al5[1]['is_best'] ?? 0) === 1 || !empty($al5[1]['is_best']));

echo "\n== 时间未知（submit_ts=0）归入「未知时间」分组 ==\n";
$rows6 = makeRowsAt('S006', [[0, 50.0], [0, 80.0]]);
$agg6  = DataService::aggregateByStudent($rows6, true);
$al6   = $agg6['rows'][0]['attempts_list'];
check('时间未知时 day = 空串', ($al6[0]['day'] ?? 'x') === '' && ($al6[1]['day'] ?? 'x') === '',
    'got ' . var_export($al6[0]['day'] ?? null, true));
check('未知时间组次数 = 2', ($al6[0]['day_count'] ?? 0) === 2, 'got ' . ($al6[0]['day_count'] ?? '?'));
check('未知时间组内仍标记最高（80）', !empty($al6[1]['day_best']) && (float)($al6[1]['score'] ?? -1) === 80.0);

echo "\n== 日期键时区边界（不能用 UTC，否则零点前后错一天）==\n";
check('00:30 仍算当天（东八区不会退到前一天）',
    DataService::dayKeyOf((int)strtotime('2026-09-08 00:30:00')) === '2026-09-08',
    'got ' . DataService::dayKeyOf((int)strtotime('2026-09-08 00:30:00')));
check('23:30 仍算当天',
    DataService::dayKeyOf((int)strtotime('2026-09-08 23:30:00')) === '2026-09-08',
    'got ' . DataService::dayKeyOf((int)strtotime('2026-09-08 23:30:00')));
check('无时间戳时从展示串取日期', DataService::dayKeyOf(0, '2026-09-08 09:41:20') === '2026-09-08');
check('无时间戳且展示串为 - 时返回空串', DataService::dayKeyOf(0, '-') === '');

echo "\n========================================\n";
echo "通过 {$pass} · 失败 {$fail}\n";
exit($fail === 0 ? 0 : 1);