<?php
declare(strict_types=1);

header('Content-Type: application/json; charset=utf-8');

if (session_status() === PHP_SESSION_NONE) {
	session_start();
}

require_once dirname(__DIR__, 2) . '/db_conn.php';

$memberId = (string)($_SESSION['member_id'] ?? $_SESSION['user_id'] ?? '');
$sysCompCode = (string)($_SESSION['sys_comp_code'] ?? $_SESSION['company'] ?? '');

if ($memberId === '') {
	http_response_code(401);
	echo json_encode(['success' => false, 'message' => 'not_logged_in'], JSON_UNESCAPED_UNICODE);
	exit;
}

$rawBody = file_get_contents('php://input');
$input = is_string($rawBody) && $rawBody !== '' ? json_decode($rawBody, true) : [];
if (!is_array($input)) {
	$input = $_POST;
}

$contentId = trim((string)($input['content_id'] ?? ''));
if ($contentId === '') {
	http_response_code(400);
	echo json_encode(['success' => false, 'message' => 'content_id_required'], JSON_UNESCAPED_UNICODE);
	exit;
}

try {
	$pdo = db_conn();

	// 학습 이력 조회
	$sql = 'SELECT watch_tm, content_tm, completed_at, last_viewed_at
			FROM edu_learning_histories
			WHERE member_id = ? AND content_id = ?';
	$params = [$memberId, $contentId];

	if ($sysCompCode !== '') {
		$sql .= ' AND sys_comp_code = ?';
		$params[] = $sysCompCode;
	}

	$sql .= ' ORDER BY last_viewed_at DESC LIMIT 1';

	$stmt = $pdo->prepare($sql);
	$stmt->execute($params);
	$row = $stmt->fetch(PDO::FETCH_ASSOC);

	// 콘텐츠 상세정보 조회 (description)
	$stmtContent = $pdo->prepare('SELECT description FROM edu_contents WHERE content_id = ? LIMIT 1');
	$stmtContent->execute([$contentId]);
	$contentRow = $stmtContent->fetch(PDO::FETCH_ASSOC);
	$description = ($contentRow['description'] ?? '');

	// 북마크 상태 조회
	$bookmarkSql = 'SELECT is_active FROM edu_content_wishlist WHERE content_id = ? AND member_id = ?';
	$bookmarkParams = [$contentId, $memberId];
	if ($sysCompCode !== '') {
		$bookmarkSql .= ' AND sys_comp_code = ?';
		$bookmarkParams[] = $sysCompCode;
	}
	$bookmarkSql .= ' LIMIT 1';
	$stmtBookmark = $pdo->prepare($bookmarkSql);
	$stmtBookmark->execute($bookmarkParams);
	$bookmarkRow = $stmtBookmark->fetch(PDO::FETCH_ASSOC);
	$isBookmarked = (($bookmarkRow['is_active'] ?? '0') === '1');

	$result = [
		'success'        => true,
		'watch_tm'       => (int)($row['watch_tm'] ?? 0),
		'content_tm'     => (int)($row['content_tm'] ?? 0),
		'completed_at'   => $row['completed_at'] ?? null,
		'last_viewed_at' => $row['last_viewed_at'] ?? null,
		'description'    => $description,
		'is_bookmarked'  => $isBookmarked,
	];

	echo json_encode($result, JSON_UNESCAPED_UNICODE);

} catch (Throwable $e) {
	error_log('[get_video_time] ' . $e->getMessage());
	http_response_code(500);
	echo json_encode(['success' => false, 'message' => 'server_error'], JSON_UNESCAPED_UNICODE);
}