<?php
require_once __DIR__ . '/../../bbs/db_conn.php';

ini_set('display_errors', '0');
ini_set('display_startup_errors', '0');
error_reporting(E_ALL & ~E_NOTICE & ~E_WARNING);

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

try {
    $pdo = db_conn();

    // 파라미터 받기
    $offer_date_fr = $_GET['offer_date_fr'] ?? '';
    $offer_date_to = $_GET['offer_date_to'] ?? '';
    $member_id = $_GET['member_id'] ?? '';
    $reason = $_GET['reason'] ?? '';
    $status_code = $_GET['status_code'] ?? '';

    // 쿼리 빌드
    $sql = "
        SELECT 
            o.offer_id,
            o.reference_url,
            o.reason,
            o.status_code,
            COALESCE(c.code_name, o.status_code) AS status_name,
            o.reason_return,
            o.member_id,
            u.name,
            DATE(o.created_at) AS offer_date
        FROM edu_content_offer o
        LEFT JOIN edu_users u ON o.member_id = u.member_id AND o.sys_comp_code = u.sys_comp_code
        LEFT JOIN edu_codes c ON c.group_code = 'OF100' AND c.base_code = o.status_code
        WHERE 1=1
    ";
    $params = [];

    if ($offer_date_fr) {
        $sql .= " AND DATE(o.created_at) >= ?";
        $params[] = $offer_date_fr;
    }
    if ($offer_date_to) {
        $sql .= " AND DATE(o.created_at) <= ?";
        $params[] = $offer_date_to;
    }
    if ($member_id) {
        $sql .= " AND (o.member_id LIKE ? OR u.name LIKE ?)";
        $params[] = '%' . $member_id . '%';
        $params[] = '%' . $member_id . '%';
    }
    if ($reason) {
        $sql .= " AND o.reason LIKE ?";
        $params[] = '%' . $reason . '%';
    }
    if ($status_code) {
        $sql .= " AND o.status_code = ?";
        $params[] = $status_code;
    }

    $sql .= " ORDER BY o.created_at DESC";

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

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

} catch (Exception $e) {
    error_log('[GET_OFFERS ERROR] ' . $e->getMessage());
    echo json_encode(['success' => false, 'message' => '서버 오류가 발생했습니다.'], JSON_UNESCAPED_UNICODE);
}
?>