<?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__) . '/db_conn.php';

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

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

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['success' => false, 'message' => 'POST only'], JSON_UNESCAPED_UNICODE);
    exit;
}

$contentId = trim((string)($_POST['content_id'] ?? ''));
$isActive  = trim((string)($_POST['is_active'] ?? ''));

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

// is_active: '1' → 활성, 그 외 → '0' 비활성
$activeValue = ($isActive === '1') ? '1' : '0';

try {
    $pdo = db_conn();
    $pdo->exec("SET NAMES 'utf8mb4'");

    // sys_comp_code가 세션에 없으면 DB에서 조회
    if ($sysCompCode === '') {
        $stmtUser = $pdo->prepare('SELECT sys_comp_code FROM edu_users WHERE member_id = ? ORDER BY sys_comp_code LIMIT 1');
        $stmtUser->execute([$memberId]);
        $row = $stmtUser->fetch();
        $sysCompCode = (string)($row['sys_comp_code'] ?? '');
    }

    if ($sysCompCode === '') {
        echo json_encode(['success' => false, 'message' => '회사코드 확인 불가'], JSON_UNESCAPED_UNICODE);
        exit;
    }

    // 기존 레코드 확인
    $stmtCheck = $pdo->prepare(
        'SELECT content_id, is_active
         FROM edu_content_wishlist
         WHERE content_id = ?
           AND member_id = ?
           AND sys_comp_code = ?'
    );
    $stmtCheck->execute([$contentId, $memberId, $sysCompCode]);
    $existing = $stmtCheck->fetch();

    if ($existing) {
        // UPDATE
        $stmtUpdate = $pdo->prepare(
            'UPDATE edu_content_wishlist
             SET is_active = ?, updated_at = NOW()
             WHERE content_id = ?
               AND member_id = ?
               AND sys_comp_code = ?'
        );
        $stmtUpdate->execute([$activeValue, $contentId, $memberId, $sysCompCode]);
    } else {
        // INSERT
        $stmtInsert = $pdo->prepare(
            'INSERT INTO edu_content_wishlist
             (content_id, member_id, sys_comp_code, is_active, created_at, updated_at)
             VALUES (?, ?, ?, ?, NOW(), NOW())'
        );
        $stmtInsert->execute([$contentId, $memberId, $sysCompCode, $activeValue]);
    }

    echo json_encode(['success' => true, 'is_active' => $activeValue], JSON_UNESCAPED_UNICODE);

} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['success' => false, 'message' => '서버 오류'], JSON_UNESCAPED_UNICODE);
}