72 lines
2.5 KiB
PHP
72 lines
2.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace app\common\service;
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/** 一次 HTTP 请求只拉一页；只有归档成功后才推进游标。 */
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final class ImChatSyncSession
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{
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public static function start(array $accounts): array
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{
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return [
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'accounts' => array_values(array_unique($accounts)),
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'index' => 0, 'side' => 0, 'cursor' => [], 'inserted' => 0, 'errors' => [],
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];
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}
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public static function step(array $state, callable $fetchPage, callable $archive): array
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{
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if ($state['index'] >= count($state['accounts'])) {
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return $state;
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}
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$account = $state['accounts'][$state['index']];
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try {
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$page = $fetchPage($account, $state['cursor']);
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} catch (\Throwable $e) {
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// 失败的会话不妨碍其他医生记录落库，下一轮仍从头补拉该会话。
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$state['errors'][] = $account . ($state['side'] === 0 ? '（医生侧）' : '（患者侧）') . '：' . $e->getMessage();
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return self::nextSide($state);
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}
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// 落库异常交由调用者处理，绝不能把未归档的页标记为已同步。
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$state['inserted'] += $archive($account, $page['msgList']);
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if ($page['completed']) {
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$state = self::nextSide($state);
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} else {
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$state['cursor'] = $page['cursor'];
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}
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return $state;
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}
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private static function nextSide(array $state): array
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{
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$state['cursor'] = [];
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if ($state['side'] === 0) {
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$state['side'] = 1;
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} else {
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$state['side'] = 0;
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$state['index']++;
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}
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return $state;
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}
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public static function progress(array $state): array
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{
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$checking = array_key_exists('accounts_verified', $state) && !$state['accounts_verified'];
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$check = $state['account_check'] ?? null;
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$completed = !$checking && $state['index'] >= count($state['accounts']);
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return [
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'completed' => $completed,
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'phase' => $checking ? 'checking_accounts' : ($completed ? 'completed' : 'syncing'),
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'checked_accounts' => $check['offset'] ?? 0,
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'candidate_accounts' => $check ? count($check['candidates']) : 0,
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'skipped_accounts' => $check ? count($check['missing']) : 0,
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'inserted' => $state['inserted'],
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'processed_peers' => $state['index'],
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'total_peers' => count($state['accounts']),
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'errors' => $state['errors'],
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];
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}
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}
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