<?php
// ini_set('display_errors', 1);
// error_reporting(E_ALL);
// header("Content-Type: application/json; charset=utf-8");

// try {
//     $pdo = new PDO(
//         "mysql:host=localhost;dbname=egbim;charset=utf8mb4",
//         "egbim",
//         "baron3840!!",
//         [
//             PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
//             PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
//         ]
//     );
// } catch (Exception $e) {
//     echo json_encode(["status" => "fail", "message" => "DB 연결 실패"]);
//     exit;
// }

// $action = $_POST['action'] ?? $_GET['action'] ?? "";

// /* =========================
//    1) READ
// ========================= */
// if ($action === "list") {
//     $stmt = $pdo->query("SELECT * FROM sales_clients ORDER BY created_at DESC");
//     $rows = $stmt->fetchAll();

//     echo json_encode([
//         "status" => "ok",
//         "records" => $rows
//     ]);
//     exit;
// }

// /* =========================
//    2) INSERT — client_code 자동 생성
// ========================= */
// if ($action === "insert") {

//     // 가장 큰 client_code 조회
//     $stmt = $pdo->query("
//         SELECT client_code 
//         FROM sales_clients 
//         ORDER BY client_code DESC 
//         LIMIT 1
//     ");
//     $row = $stmt->fetch();
//     $last_code = $row['client_code'] ?? 'C000';

//     // 숫자 증가
//     $num = (int)substr($last_code, 1);
//     $new_code = "C" . str_pad($num + 1, 3, "0", STR_PAD_LEFT);

//     // 신규 데이터 생성
//     $stmt = $pdo->prepare("
//         INSERT INTO sales_clients 
//         (client_code, client_name, business_type, org_type, manager_emp_no, biz_number, address, phone, remarks, created_at)
//         VALUES (?, '', '', '', '', '', '', '', '', NOW())
//     ");

//     $stmt->execute([$new_code]);

//     echo json_encode([
//         "status" => "ok",
//         "client_code" => $new_code
//     ]);
//     exit;
// }

// /* =========================
//    3) UPDATE — 추가된 4개 필드도 자동 처리
// ========================= */
// if ($action === "update") {

//     $code = $_POST['client_code'];
//     unset($_POST['action'], $_POST['client_code']);

//     $fields = [];
//     $params = [];

//     foreach ($_POST as $key => $val) {
//         $fields[] = "$key = ?";
//         $params[] = $val;
//     }

//     if (!empty($fields)) {
//         $sql = "UPDATE sales_clients SET " . implode(", ", $fields) . ", updated_at = NOW() WHERE client_code = ?";
//         $params[] = $code;

//         $stmt = $pdo->prepare($sql);
//         $stmt->execute($params);
//     }

//     echo json_encode(["status" => "ok"]);
//     exit;
// }

// /* =========================
//    4) DELETE
// ========================= */
// if ($action === "delete") {
//     $stmt = $pdo->prepare("DELETE FROM sales_clients WHERE client_code=?");
//     $stmt->execute([$_POST['client_code']]);

//     echo json_encode(["status" => "ok"]);
//     exit;
// }

// echo json_encode(["status" => "fail", "message" => "알 수 없는 요청"]);
?>
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
header("Content-Type: application/json; charset=utf-8");

/* ====================================
   0) DB 연결
==================================== */
try {
    $pdo = new PDO(
        "mysql:host=localhost;dbname=egbim;charset=utf8mb4",
        "egbim",
        "baron3840!!",
        [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
        ]
    );
} catch (Exception $e) {
    echo json_encode(["status" => "fail", "message" => "DB 연결 실패"]);
    exit;
}

$action = $_POST['action'] ?? $_GET['action'] ?? "";

// /* ====================================
//    1) OPTION LIST (기관/업종)
// ==================================== */
// if ($action === "get_options") {

//     /* 기관구분 옵션 */
//     $stmt = $pdo->query("SELECT org_type FROM sales_org_types ORDER BY id ASC");
//     $orgTypes = [];
//     while ($row = $stmt->fetch()) {
//         $orgTypes[] = [
//             "id"   => $row['org_type'],
//             "text" => $row['org_type']
//         ];
//     }

//     /* 업종 옵션 */
//     $stmt = $pdo->query("SELECT business_type FROM sales_business_types ORDER BY id ASC");
//     $businessTypes = [];
//     while ($row = $stmt->fetch()) {
//         $businessTypes[] = [
//             "id"   => $row['business_type'],
//             "text" => $row['business_type']
//         ];
//     }

//     echo json_encode([
//         "status"        => "ok",
//         "orgTypes"      => $orgTypes,
//         "businessTypes" => $businessTypes
//     ]);
//     exit;
// }

/* ====================================
   2) READ (전체 목록)
==================================== */
if ($action === "list") {

    $stmt = $pdo->query("SELECT * FROM sales_clients ORDER BY created_at DESC");
    $rows = $stmt->fetchAll();

    echo json_encode([
        "status" => "ok",
        "records" => $rows
    ]);
    exit;
}

/* ====================================
   3) INSERT (client_code 자동생성)
==================================== */
if ($action === "insert") {

    // 가장 큰 client_code 탐색
    $stmt = $pdo->query("
        SELECT client_code 
        FROM sales_clients 
        ORDER BY client_code DESC 
        LIMIT 1
    ");
    $row = $stmt->fetch();
    $last_code = $row['client_code'] ?? 'C000';

    // 숫자 증가
    $num = (int)substr($last_code, 1);
    $new_code = "C" . str_pad($num + 1, 3, "0", STR_PAD_LEFT);

    // 신규 insert
    $stmt = $pdo->prepare("
        INSERT INTO sales_clients 
        (client_code, client_name, business_type, org_type, manager_emp_no, biz_number, address, phone, remarks, created_at)
        VALUES (?, '', '', '', '', '', '', '', '', NOW())
    ");
    $stmt->execute([$new_code]);

    echo json_encode([
        "status" => "ok",
        "client_code" => $new_code
    ]);
    exit;
}

/* ====================================
   4) UPDATE (모든 필드 자동 처리)
==================================== */
if ($action === "update") {

    $client_code = $_POST['client_code'];
    unset($_POST['client_code'], $_POST['action']);

    $fields = [];
    $params = [];

    foreach ($_POST as $key => $val) {
        $fields[] = "$key = ?";
        $params[] = $val;
    }

    // updated_at 자동 업데이트
    if ($fields) {
        $sql = "UPDATE sales_clients SET " . implode(", ", $fields) . ", updated_at = NOW() WHERE client_code = ?";
        $params[] = $client_code;

        $stmt = $pdo->prepare($sql);
        $stmt->execute($params);
    }

    echo json_encode(["status" => "ok"]);
    exit;
}

/* ====================================
   5) DELETE
==================================== */
if ($action === "delete") {

    $stmt = $pdo->prepare("DELETE FROM sales_clients WHERE client_code=?");
    $stmt->execute([$_POST['client_code']]);

    echo json_encode(["status" => "ok"]);
    exit;
}

/* ====================================
   DEFAULT
==================================== */
echo json_encode(["status" => "fail", "message" => "알 수 없는 요청"]);
exit;

?>