| 1 |
<?php |
| 2 |
|
| 3 |
namespace FluentCart\App\Services\CustomerIdentity; |
| 4 |
|
| 5 |
use FluentCart\App\Models\Customer; |
| 6 |
use FluentCart\App\Models\User; |
| 7 |
use FluentCart\Framework\Database\Orm\Builder; |
| 8 |
|
| 9 |
/** Resumes large, verified recoveries without retaining frontend transactions. */ |
| 10 |
class CustomerRecoveryService |
| 11 |
{ |
| 12 |
const META_KEY = '_fct_customer_recovery'; |
| 13 |
const HOOK = 'fluent_cart/customer/recover_verified_history'; |
| 14 |
const FOREGROUND_SOURCES = 5; |
| 15 |
const MAX_ATTEMPTS = 3; |
| 16 |
|
| 17 |
public static function start(int $userId, Customer $target, string $email): void |
| 18 |
{ |
| 19 |
if (!CustomerMerger::supportsTransactions()) { |
| 20 |
throw new \RuntimeException('Customer recovery requires transactional storage.'); |
| 21 |
} |
| 22 |
|
| 23 |
$state = [ |
| 24 |
'id' => wp_generate_uuid4(), |
| 25 |
'customer_id' => (int) $target->id, |
| 26 |
'email' => $email, |
| 27 |
'cursor' => 0, |
| 28 |
'upper_id' => (int) static::sources($email, (int) $target->id)->max('id'), |
| 29 |
'processed' => 0, |
| 30 |
'attempts' => 0, |
| 31 |
'incomplete' => false, |
| 32 |
'status' => 'pending', |
| 33 |
]; |
| 34 |
update_user_meta($userId, static::META_KEY, $state); |
| 35 |
if (!wp_schedule_single_event(time() + 1, static::HOOK, [['user_id' => $userId, 'id' => $state['id']]])) { |
| 36 |
throw new \RuntimeException('Unable to schedule customer recovery.'); |
| 37 |
} |
| 38 |
} |
| 39 |
|
| 40 |
public static function progress(int $userId): array |
| 41 |
{ |
| 42 |
$state = get_user_meta($userId, static::META_KEY, true); |
| 43 |
return is_array($state) ? $state : []; |
| 44 |
} |
| 45 |
|
| 46 |
protected static function sources(string $email, int $targetId): Builder |
| 47 |
{ |
| 48 |
return Customer::query()->where('email', $email)->where('id', '!=', $targetId)->unclaimed(); |
| 49 |
} |
| 50 |
|
| 51 |
/** One customer and at most BATCH_SIZE rows per resource table per invocation. */ |
| 52 |
public static function run(array $payload): void |
| 53 |
{ |
| 54 |
$userId = (int) ($payload['user_id'] ?? 0); |
| 55 |
$jobId = (string) ($payload['id'] ?? ''); |
| 56 |
wp_cache_delete($userId, 'user_meta'); |
| 57 |
$state = static::progress($userId); |
| 58 |
if (($state['id'] ?? '') !== $jobId || ($state['status'] ?? '') !== 'pending') { |
| 59 |
return; |
| 60 |
} |
| 61 |
|
| 62 |
if (!CustomerMerger::supportsTransactions()) { |
| 63 |
// One compare-and-set write; no rollback is assumed on this path. |
| 64 |
// Do not replace a newer claim or advance any transfer progress. |
| 65 |
$blocked = array_merge($state, ['status' => 'blocked_storage']); |
| 66 |
update_user_meta($userId, static::META_KEY, $blocked, $state); |
| 67 |
return; |
| 68 |
} |
| 69 |
|
| 70 |
// Persist a watchdog BEFORE opening the work transaction. A hard timeout |
| 71 |
// rolls back that batch but leaves a scheduled retry and its attempt count. |
| 72 |
$args = [['user_id' => $userId, 'id' => $jobId]]; |
| 73 |
$retryAt = time() + 15 * MINUTE_IN_SECONDS; |
| 74 |
$connection = Customer::query()->getConnection(); |
| 75 |
if (!wp_schedule_single_event($retryAt, static::HOOK, $args) && !wp_next_scheduled(static::HOOK, $args)) { |
| 76 |
$connection->transaction(function () use ($userId, $jobId) { |
| 77 |
User::query()->where('ID', $userId)->lockForUpdate()->first(); |
| 78 |
wp_cache_delete($userId, 'user_meta'); |
| 79 |
$state = static::progress($userId); |
| 80 |
if (($state['id'] ?? '') === $jobId && ($state['status'] ?? '') === 'pending') { |
| 81 |
$state['status'] = 'failed'; |
| 82 |
update_user_meta($userId, static::META_KEY, $state); |
| 83 |
} |
| 84 |
}); |
| 85 |
return; |
| 86 |
} |
| 87 |
try { |
| 88 |
$ready = $connection->transaction(function () use ($userId, $jobId) { |
| 89 |
User::query()->where('ID', $userId)->lockForUpdate()->first(); |
| 90 |
wp_cache_delete($userId, 'user_meta'); |
| 91 |
$state = static::progress($userId); |
| 92 |
if (($state['id'] ?? '') !== $jobId || ($state['status'] ?? '') !== 'pending') { |
| 93 |
return false; |
| 94 |
} |
| 95 |
if ($state['attempts'] >= static::MAX_ATTEMPTS) { |
| 96 |
$state['status'] = 'failed'; |
| 97 |
update_user_meta($userId, static::META_KEY, $state); |
| 98 |
return false; |
| 99 |
} |
| 100 |
$state['attempts']++; |
| 101 |
update_user_meta($userId, static::META_KEY, $state); |
| 102 |
return true; |
| 103 |
}); |
| 104 |
if ($ready) { |
| 105 |
$connection->transaction(function () use ($userId, $jobId) { |
| 106 |
User::query()->where('ID', $userId)->lockForUpdate()->first(); |
| 107 |
clean_user_cache($userId); |
| 108 |
wp_cache_delete($userId, 'user_meta'); |
| 109 |
$state = static::progress($userId); |
| 110 |
if (($state['id'] ?? '') !== $jobId || ($state['status'] ?? '') !== 'pending') { |
| 111 |
return; |
| 112 |
} |
| 113 |
$user = get_userdata($userId); |
| 114 |
$target = Customer::query()->where('user_id', $userId)->orderBy('id')->lockForUpdate()->first(); |
| 115 |
$conflict = Customer::query()->where('email', $state['email'])->where('id', '!=', $state['customer_id'])->where('user_id', '>', 0)->exists(); |
| 116 |
if (!$user || !$target || (int) $target->id !== $state['customer_id'] || !EmailClaimService::isEnabled() || EmailVerificationService::isRequired($userId) |
| 117 |
|| !EmailVerificationService::isSame($user->user_email, $state['email']) |
| 118 |
|| !EmailVerificationService::isSame($target->email, $state['email']) || $conflict) { |
| 119 |
$state['status'] = 'cancelled'; |
| 120 |
update_user_meta($userId, static::META_KEY, $state); |
| 121 |
return; |
| 122 |
} |
| 123 |
$source = static::sources($state['email'], (int) $target->id) |
| 124 |
->where('id', '>', $state['cursor'])->where('id', '<=', $state['upper_id']) |
| 125 |
->orderBy('id')->lockForUpdate()->first(); |
| 126 |
if ($source) { |
| 127 |
$needsAnotherBatch = false; |
| 128 |
$complete = CustomerMerger::absorb($source, $target, $needsAnotherBatch); |
| 129 |
if (!$needsAnotherBatch) { |
| 130 |
$state['cursor'] = (int) $source->id; |
| 131 |
$state['processed']++; |
| 132 |
$state['incomplete'] = $state['incomplete'] || !$complete; |
| 133 |
} |
| 134 |
} else { |
| 135 |
$target->recountStat(); |
| 136 |
$state['status'] = $state['incomplete'] ? 'incomplete' : 'completed'; |
| 137 |
} |
| 138 |
$state['attempts'] = 0; |
| 139 |
update_user_meta($userId, static::META_KEY, $state); |
| 140 |
}); |
| 141 |
} |
| 142 |
} catch (\Throwable $exception) { |
| 143 |
// The durable watchdog retries the same cursor; no partial batch commits. |
| 144 |
wp_cache_delete($userId, 'user_meta'); |
| 145 |
return; |
| 146 |
} |
| 147 |
|
| 148 |
wp_cache_delete($userId, 'user_meta'); |
| 149 |
$state = static::progress($userId); |
| 150 |
if (($state['id'] ?? '') === $jobId && ($state['status'] ?? '') === 'pending') { |
| 151 |
// Keep the watchdog unless the next invocation is durably scheduled. |
| 152 |
if (!wp_schedule_single_event(time() + 1, static::HOOK, $args)) { |
| 153 |
return; |
| 154 |
} |
| 155 |
} |
| 156 |
wp_unschedule_event($retryAt, static::HOOK, $args); |
| 157 |
} |
| 158 |
} |
| 159 |
|
