<?php
/**
 * After-sale handling-log harness.
 *
 * Drives the REAL AfterSaleService against an in-memory $wpdb stand-in so the
 * handling-log contract is covered end to end: every state submission appends one
 * 「status + note + source + created_at」 entry, the log stays chronological, it is
 * capped, and malformed rows normalize instead of fataling.
 *
 * Usage: php after-sale-log-harness.php   -> prints a JSON result object.
 */

namespace {
	define('ARRAY_A', 'ARRAY_A');

	final class WP_Error {
		public function __construct(private string $code, private string $message, private array $data = []) {}
		public function get_error_code(): string { return $this->code; }
		public function get_error_message(): string { return $this->message; }
		public function get_error_data(): array { return $this->data; }
	}

	define('ABSPATH', __DIR__ . '/');

	// ---------- WP function stubs ----------
	function __($s, $d = null) { return (string) $s; }
	function esc_html($s) { return htmlspecialchars((string) $s, ENT_QUOTES); }
	function esc_url_raw($s) { return (string) $s; }
	function sanitize_key($s) { return preg_replace('/[^a-z0-9_\-]/', '', strtolower((string) $s)) ?? ''; }
	function sanitize_text_field($s) { return trim(strip_tags((string) $s)); }
	function sanitize_textarea_field($s) { return trim(strip_tags((string) $s)); }
	function wp_json_encode($v, $f = 0) { return (string) json_encode($v, $f); }
	function current_user_can($c) { return true; }

	// Monotonic clock: every append must land on a strictly later timestamp so the
	// chronological ordering assertion is meaningful.
	$GLOBALS['aksrt_log_now'] = strtotime('2026-10-01 10:00:00');
	function current_time($type = 'mysql', $gmt = false) {
		$GLOBALS['aksrt_log_now'] += 1;
		return gmdate('Y-m-d H:i:s', $GLOBALS['aksrt_log_now']);
	}

	// ---------- In-memory $wpdb ----------
	final class FakeWpdb {
		public string $prefix = 'wp_';
		/** @var array<int,array<string,mixed>> keyed by after-sale id */
		public array $rows = [];
		public int $insert_id = 0;
		private int $next_id = 100;

		public function prepare(string $sql, ...$args) {
			if (count($args) === 1 && is_array($args[0])) $args = $args[0];
			$i = 0;
			return preg_replace_callback('/%[sd]/', static function ($m) use (&$i, $args): string {
				if ($i >= count($args)) return $m[0];
				$value = $args[$i++];
				return $m[0][1] === 'd' ? (string) (int) $value : "'" . str_replace("'", "''", (string) $value) . "'";
			}, $sql) ?? $sql;
		}

		public function get_var(string $sql) {
			if (preg_match("/GET_LOCK\('/", $sql)) return 1;
			if (preg_match("/RELEASE_LOCK\('/", $sql)) return 1;
			if (str_starts_with($sql, 'SELECT COUNT(*)')) return count($this->rows);
			throw new RuntimeException('unsupported get_var: ' . $sql);
		}

		public function get_row(string $sql, $output = null) {
			if (preg_match("/WHERE id = (\d+)$/", $sql, $m)) return $this->rows[(int) $m[1]] ?? null;
			if (preg_match("/WHERE order_number = '([^']*)'/", $sql, $m)) {
				$statuses = preg_match("/status IN \(([^)]*)\)/", $sql, $s) ? explode(',', str_replace("'", '', $s[1])) : null;
				$found = null;
				foreach ($this->rows as $row) {
					if ((string) ($row['order_number'] ?? '') !== $m[1]) continue;
					if ($statuses !== null && !in_array((string) ($row['status'] ?? ''), array_map('trim', $statuses), true)) continue;
					if ($found === null || (int) $row['id'] > (int) $found['id']) $found = $row;
				}
				return $found;
			}
			throw new RuntimeException('unsupported get_row: ' . $sql);
		}

		public function get_results(string $sql, $output = null) {
			if (preg_match("/WHERE order_number = '([^']*)'/", $sql, $m)) {
				$rows = array_values(array_filter($this->rows, static fn($row): bool => (string) ($row['order_number'] ?? '') === $m[1]));
				usort($rows, static fn($a, $b): int => (int) $b['id'] <=> (int) $a['id']);
				return $rows;
			}
			throw new RuntimeException('unsupported get_results: ' . $sql);
		}

		public function insert(string $table, array $data, array $formats = []) {
			$id = $this->next_id++;
			$this->rows[$id] = $data + ['id' => $id];
			$this->insert_id = $id;
			return 1;
		}

		public function update(string $table, array $data, array $where, array $formats = [], array $where_formats = []) {
			$id = (int) ($where['id'] ?? 0);
			if (!isset($this->rows[$id])) return false;
			$this->rows[$id] = array_merge($this->rows[$id], $data);
			return 1;
		}
	}

	// ---------- Domain stubs the service collaborates with ----------
	require __DIR__ . '/../../src/Ledger/AssetType.php';
	require __DIR__ . '/../../src/Ledger/AssetAmount.php';
}

namespace AKSRT\Core {
	final class DBMigrator {
		public static function table(string $name): string { return 'wp_aksrt_' . $name; }
	}
}

namespace AKSRT\Payment {
	final class Order {
		public const STATUS_PAID = 'paid';
	}

	final class OrderRepository {
		private static $i;
		/** @var array<string,array<string,mixed>> keyed by order number */
		public static array $orders = [];
		public static function get_instance(): self { return self::$i ?: self::$i = new self(); }
		public function get_user_order(int $user_id, string $order_number): ?array {
			return self::$orders[$order_number] ?? null;
		}
	}

	require __DIR__ . '/../../src/Payment/AfterSaleService.php';
}

namespace {
	$GLOBALS['aksrt_wpdb'] = new FakeWpdb();
	// The service reaches for the real global $wpdb, so the stand-in has to live there.
	$GLOBALS['wpdb'] = $GLOBALS['aksrt_wpdb'];

	/** @return list<string> */
	function run(): array {
		$wpdb = $GLOBALS['aksrt_wpdb'];
		$service = \AKSRT\Payment\AfterSaleService::get_instance();
		$order = ['order_number' => '20261001100000000001', 'user_id' => 7, 'status' => 'paid', 'currency' => 'CNY', 'amount' => '12.50'];
		\AKSRT\Payment\OrderRepository::$orders = [$order['order_number'] => $order];

		// 1) create() seeds the log with the user's own submission.
		$wpdb->rows = [];
		$created = $service->create(7, $order['order_number'], '商品与描述不符');
		if ($created instanceof \WP_Error) return ['error' => 'create failed: ' . $created->get_error_message()];
		$log = $created['handling_log'];
		$results = [];
		$results[] = ['name' => 'create_seeds_single_user_entry', 'ok' => count($log) === 1
			&& $log[0]['status'] === 'pending'
			&& $log[0]['source'] === 'user'
			&& $log[0]['note'] === ''
			&& $log[0]['created_at'] === $created['created_at'],
			'detail' => $log];

		// 2) Every admin submission appends, even with an empty note; order is chronological.
		$service->set_status((int) $created['id'], 'processing', '已联系仓库核实');
		$service->set_status((int) $created['id'], 'completed', '已原路退款');
		$service->set_status((int) $created['id'], 'rejected', '');
		$log = $service->get((int) $created['id'])['handling_log'];
		$results[] = ['name' => 'status_changes_append_even_without_note', 'ok' => count($log) === 4
			&& $log[1] === ['status' => 'processing', 'note' => '已联系仓库核实', 'source' => 'admin', 'created_at' => $log[1]['created_at']]
			&& $log[2]['status'] === 'completed' && $log[2]['note'] === '已原路退款'
			&& $log[3]['status'] === 'rejected' && $log[3]['note'] === ''
			&& $log[0]['created_at'] < $log[1]['created_at']
			&& $log[1]['created_at'] < $log[2]['created_at']
			&& $log[2]['created_at'] < $log[3]['created_at'],
			'detail' => $log];

		// 3) A user-side cancel is logged as a user entry.
		$wpdb->rows = [];
		$second = $service->create(7, $order['order_number'], '拍错了');
		$service->cancel_for_user(7, $order['order_number']);
		$log = $service->get((int) $second['id'])['handling_log'];
		$last = end($log);
		$results[] = ['name' => 'cancel_appends_user_entry', 'ok' => count($log) === 2
			&& $last['status'] === 'cancelled' && $last['source'] === 'user' && $last['note'] === '',
			'detail' => $log];

		// 4) The log is capped, keeping the most recent entries.
		$wpdb->rows = [];
		$seeded = [];
		for ($i = 1; $i <= 50; $i++) {
			$seeded[] = ['status' => 'processing', 'note' => 'seed-' . $i, 'source' => 'admin', 'created_at' => sprintf('2026-10-01 10:%02d:00', $i)];
		}
		$wpdb->rows[900] = ['id' => 900, 'order_number' => $order['order_number'], 'user_id' => 7, 'status' => 'processing', 'handling_log' => wp_json_encode($seeded), 'created_at' => '2026-10-01 10:01:00'];
		$service->set_status(900, 'completed', '第五十条');
		$log = $service->get(900)['handling_log'];
		$results[] = ['name' => 'log_is_capped_at_50', 'ok' => count($log) === 50
			&& $log[0]['note'] === 'seed-2'
			&& end($log)['note'] === '第五十条',
			'detail' => ['count' => count($log), 'first' => $log[0]['note'], 'last' => end($log)['note']]];

		// 5) Malformed rows normalize instead of fataling.
		$wpdb->rows[901] = ['id' => 901, 'order_number' => $order['order_number'], 'user_id' => 7, 'status' => 'processing',
			'handling_log' => wp_json_encode([
				['status' => 'pending', 'note' => 'ok', 'source' => 'user', 'created_at' => '2026-10-01 10:00:00'],
				['status' => '', 'note' => 'no status', 'source' => 'admin', 'created_at' => '2026-10-01 10:05:00'],
				['note' => 'not an array value', 'source' => 'admin', 'created_at' => '2026-10-01 10:06:00'],
				'garbage',
				['status' => 'completed', 'source' => 'mystery', 'created_at' => '2026-10-01 10:07:00'],
			])];
		$wpdb->rows[902] = ['id' => 902, 'order_number' => $order['order_number'], 'user_id' => 7, 'status' => 'pending', 'handling_log' => 'not-json'];
		$normalized = $service->get(901)['handling_log'];
		$broken = $service->get(902)['handling_log'];
		$results[] = ['name' => 'normalize_drops_malformed_entries', 'ok' => count($normalized) === 2
			&& $normalized[0]['status'] === 'pending'
			&& $normalized[1] === ['status' => 'completed', 'note' => '', 'source' => 'admin', 'created_at' => '2026-10-01 10:07:00']
			&& $broken === [],
			'detail' => ['normalized' => $normalized, 'broken_json' => $broken]];

		// 6) 再次申请的闸门只看「进行中」的工单：completed / rejected / cancelled 都放行，
		//    订单有没有另标已退款不影响这条（订单已退款时 create() 的 STATUS_PAID 校验先挡）。
		$gate = static function (string $status) use ($service, $wpdb, $order) {
			$wpdb->rows = [];
			$wpdb->rows[950] = ['id' => 950, 'order_number' => $order['order_number'], 'user_id' => 7, 'status' => $status,
				'reason' => '旧申请', 'handling_log' => wp_json_encode([['status' => $status, 'note' => '', 'source' => 'admin', 'created_at' => '2026-10-01 10:00:00']]),
				'created_at' => '2026-10-01 10:00:00'];
			return $service->create(7, $order['order_number'], '新的申请原因');
		};
		$completed = $gate('completed');
		$rejected = $gate('rejected');
		$cancelled = $gate('cancelled');
		$results[] = ['name' => 'settled_ticket_still_allows_reapply', 'ok' => !$completed instanceof \WP_Error
			&& !$rejected instanceof \WP_Error
			&& !$cancelled instanceof \WP_Error,
			'detail' => [
				'completed' => $completed instanceof \WP_Error ? $completed->get_error_code() : 'created',
				'rejected'  => $rejected instanceof \WP_Error ? $rejected->get_error_code() : 'created',
				'cancelled' => $cancelled instanceof \WP_Error ? $cancelled->get_error_code() : 'created',
			]];

		// 待审核：同人同因幂等返回原工单，换原因则挡住
		$wpdb->rows = [];
		$wpdb->rows[951] = ['id' => 951, 'order_number' => $order['order_number'], 'user_id' => 7, 'status' => 'pending',
			'reason' => '同一个原因', 'handling_log' => '[]', 'created_at' => '2026-10-01 10:00:00'];
		$same = $service->create(7, $order['order_number'], '同一个原因');
		$other = $service->create(7, $order['order_number'], '换了个原因');
		$results[] = ['name' => 'open_ticket_blocks_duplicate_apply', 'ok' => is_array($same)
			&& (int) $same['id'] === 951
			&& $other instanceof \WP_Error
			&& $other->get_error_code() === 'aksrt_after_sale_exists',
			'detail' => ['same' => is_array($same) ? (int) $same['id'] : 'error', 'other' => $other instanceof \WP_Error ? $other->get_error_code() : 'created']];

		return $results;
	}

	$results = run();
	$failed = array_values(array_filter($results, static fn($r): bool => empty($r['ok'])));
	echo json_encode(['passed' => count($results) - count($failed), 'failed' => count($failed), 'results' => $results], JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT) . "\n";
	exit($failed ? 1 : 0);
}