<?php
require_once __DIR__ . '/../../bbs/auth.php';
edu_require_login();

include_once __DIR__ . '/../../bbs/db_conn.php';

header('Content-Type: application/json');

$year = $_GET['year'] ?? date('Y');
$month = $_GET['month'] ?? '';
$comp = $_GET['access_comp'] ?? '';

if (!$month && !isset($_GET['fr_date'])) {
    echo json_encode(['success' => false, 'message' => '조회 정보가 없습니다.']);
    exit;
}

try {
    $pdo = db_conn();

    $fr_date = $_GET['fr_date'] ?? '';
    $to_date = $_GET['to_date'] ?? '';

    // 법인별 접속자 리스트 조회
    $sql = "
        SELECT 
            fn_get_code_name(CONCAT('CO100', u.sys_comp_code)) as comp_name,
            u.sys_comp_code, 
            u.name, 
            u.dept_name, 
            u.rank_name, 
            a.accessed_at
        FROM edu_access_logs a
        JOIN edu_users u ON a.member_id = u.member_id and a.sys_comp_code = u.sys_comp_code
        WHERE 1=1
    ";
    $params = [];

    if ($fr_date && $to_date) {
        $sql .= " AND a.accessed_at BETWEEN ? AND ?";
        $params[] = "$fr_date 00:00:00";
        $params[] = "$to_date 23:59:59";
    } elseif ($month) {
        $sql .= " AND YEAR(a.accessed_at) = ? AND MONTH(a.accessed_at) = ?";
        $params[] = $year;
        $params[] = $month;
    } else {
        $sql .= " AND YEAR(a.accessed_at) = ?";
        $params[] = $year;
    }

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

    $sql .= " ORDER BY a.accessed_at DESC, u.sys_comp_code ASC, u.member_id ASC";

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

    echo json_encode(['success' => true, 'data' => $logs]);
} catch (Exception $e) {
    echo json_encode(['success' => false, 'message' => '데이터 조회 중 오류가 발생했습니다.', 'error' => $e->getMessage()]);
}