<?php
require_once __DIR__ . '/db/config.php';
require_once __DIR__ . '/includes/lang.php';
if (session_status() === PHP_SESSION_NONE) session_start();

$user = null;
if (isset($_SESSION['user_id'])) {
    $stmt = db()->prepare("SELECT * FROM users WHERE id = ?");
    $stmt->execute([$_SESSION['user_id']]);
    $user = $stmt->fetch();
}

if (!$user) {
    header('Location: /auth/login.php');
    exit;
}

require_once __DIR__ . '/includes/header.php';
require_once __DIR__ . '/includes/exchange.php';

// Fetch rates
$rates = get_exchange_rates();

// Fetch settings
$stmt = db()->query("SELECT setting_key, setting_value FROM system_settings");
$settings = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);

$trc20_addr = $settings['usdt_trc20_address'] ?? 'TYv9V5J1P1eEwz7y3WqJg9M2yv7f7xXv3x';
$erc20_addr = $settings['usdt_erc20_address'] ?? '0x742d35Cc6634C0532925a3b844Bc454e4438f44e';
$bep20_addr = $settings['usdt_bep20_address'] ?? '0x742d35Cc6634C0532925a3b844Bc454e4438f44e';
?>

<div class="container py-4">
    <div class="row justify-content-center">
        <div class="col-lg-8">
            <!-- Back Button -->
            <div class="mb-4">
                <a href="javascript:history.back()" class="text-white-50 text-decoration-none d-inline-flex align-items-center gap-2">
                    <i class="bi bi-arrow-left fs-4"></i>
                    <span><?= __('back') ?></span>
                </a>
            </div>

            <div class="card bg-surface border-secondary rounded-4 shadow-lg overflow-hidden mb-4">
                <div class="card-header border-secondary bg-black bg-opacity-30 p-4">
                    <h4 class="mb-0 fw-bold d-flex align-items-center gap-3 text-white">
                        <i class="bi bi-wallet2 text-primary"></i>
                        <?= __('recharge') ?>
                    </h4>
                </div>
                
                <div class="card-body p-4">
                    <!-- Tabs -->
                    <ul class="nav nav-pills nav-fill mb-4 bg-black p-1 rounded-pill" id="rechargeTabs" role="tablist">
                        <li class="nav-item" role="presentation">
                            <button class="nav-link active rounded-pill px-4" id="fiat-tab" data-bs-toggle="pill" data-bs-target="#fiat" type="button" role="tab"><?= __('fiat_recharge') ?></button>
                        </li>
                        <li class="nav-item" role="presentation">
                            <button class="nav-link rounded-pill px-4" id="crypto-tab" data-bs-toggle="pill" data-bs-target="#crypto" type="button" role="tab"><?= __('crypto_recharge') ?></button>
                        </li>
                    </ul>

                    <div class="tab-content" id="rechargeTabsContent">
                        <!-- Fiat Recharge -->
                        <div class="tab-pane fade show active" id="fiat" role="tabpanel">
                            <form id="fiatRechargeForm">
                                <div class="mb-4">
                                    <label class="form-label text-white-50 small fw-bold mb-2"><?= __('select_currency') ?></label>
                                    <select class="form-select bg-dark border-secondary text-white py-3" id="fiatCurrency" onchange="updateRate()">
                                        <?php
                                        $currencies = get_global_currencies();
                                        foreach ($currencies as $code => $info) {
                                            $rate = $rates[$code] ?? 1.0;
                                            echo "<option value=\"$code\" data-rate=\"$rate\">{$info['flag']} $code - {$info['name']}</option>";
                                        }
                                        ?>
                                    </select>
                                </div>

                                <div class="mb-4">
                                    <label class="form-label text-white-50 small fw-bold mb-2"><?= __('fiat_amount') ?></label>
                                    <div class="input-group">
                                        <input type="number" class="form-control bg-dark border-secondary text-white py-3" id="fiatAmount" placeholder="0.00" oninput="calculateUSDT()">
                                        <span class="input-group-text bg-dark border-secondary text-white-50 fw-bold" id="selectedCurrencyLabel">USD</span>
                                    </div>
                                </div>

                                <div class="mb-5 p-4 bg-primary bg-opacity-10 border border-primary border-opacity-20 rounded-4">
                                    <div class="d-flex justify-content-between align-items-center">
                                        <span class="text-white-50"><?= __('est_usdt') ?></span>
                                        <span class="h4 mb-0 fw-bold text-primary" id="estUsdt">0.00 USDT</span>
                                    </div>
                                    <div class="mt-2 small text-white-50">
                                        <i class="bi bi-info-circle me-1"></i>
                                        <?= __('rate') ?>: 1 USDT ≈ <span id="currentRateText" class="text-white">1.00 USD</span>
                                    </div>
                                </div>

                                <button type="button" class="btn btn-primary w-100 py-3 rounded-pill fw-bold shadow-lg" onclick="confirmFiatOrder(this, event)">
                                    <?= __('confirm_order') ?>
                                </button>
                            </form>

                            <div class="mt-5 p-4 bg-black bg-opacity-20 rounded-4 border border-secondary border-opacity-50">
                                <h6 class="text-white fw-bold mb-3 d-flex align-items-center gap-2">
                                    <i class="bi bi-info-circle text-info"></i> <?= __('recharge_steps') ?>
                                </h6>
                                <ul class="text-white-50 small mb-0 ps-3">
                                    <li class="mb-2"><?= __('recharge_step1') ?></li>
                                    <li class="mb-2"><?= __('recharge_step2') ?></li>
                                    <li class="mb-2"><?= __('recharge_step3') ?></li>
                                    <li><?= __('recharge_step4') ?></li>
                                </ul>
                            </div>

                            <div class="bg-black bg-opacity-20 rounded-4 p-4 mt-4 border border-secondary border-opacity-50">
                                <h6 class="text-white fw-bold mb-3 d-flex align-items-center gap-2">
                                    <i class="bi bi-shield-check text-warning"></i> <?= __('security_tips') ?>
                                </h6>
                                <ul class="text-white-50 small mb-0 ps-3">
                                    <li class="mb-2"><?= __('recharge_tip1') ?></li>
                                    <li class="mb-2"><?= __('recharge_tip2') ?></li>
                                    <li><?= __('recharge_tip3') ?></li>
                                </ul>
                            </div>
                        </div>

                        <!-- Crypto Recharge -->
                        <div class="tab-pane fade" id="crypto" role="tabpanel">
                            <div class="mb-4">
                                <label class="form-label text-white-50 small fw-bold mb-2"><?= __('coin') ?></label>
                                <div class="d-flex align-items-center gap-3 p-3 bg-dark border border-secondary rounded-4">
                                    <img src="<?= getCoinIcon('USDT') ?>" width="32" height="32" alt="USDT" onerror="handleIconError(this, 'USDT')">
                                    <div>
                                        <div class="fw-bold text-white"><?= $lang === 'zh' ? __('USDT') : 'USDT' ?></div>
                                        <div class="text-white-50 small"><?= __('tether') ?></div>
                                    </div>
                                </div>
                            </div>

                            <div class="mb-4">
                                <label class="form-label text-white-50 small fw-bold mb-2"><?= __('select_network') ?></label>
                                <div class="d-flex gap-2" id="networkSelectors">
                                    <button type="button" class="btn btn-outline-primary active flex-fill py-2 rounded-3" onclick="selectNetwork('TRC20', '<?= $trc20_addr ?>')">TRC20</button>
                                    <button type="button" class="btn btn-outline-secondary flex-fill py-2 rounded-3" onclick="selectNetwork('ERC20', '<?= $erc20_addr ?>')">ERC20</button>
                                    <button type="button" class="btn btn-outline-secondary flex-fill py-2 rounded-3" onclick="selectNetwork('BEP20', '<?= $bep20_addr ?>')">BEP20</button>
                                </div>
                            </div>

                            <div class="mb-4 text-center">
                                <div class="p-3 bg-white rounded-4 d-inline-block mb-3 shadow-sm">
                                    <img id="qrCode" src="https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=<?= $trc20_addr ?>" width="150" height="150" alt="QR Code">
                                </div>
                                <div class="input-group">
                                    <input type="text" id="cryptoAddress" class="form-control bg-dark border-secondary text-white text-center py-3" value="<?= $trc20_addr ?>" readonly>
                                    <button class="btn btn-outline-primary px-4" type="button" onclick="copyAddress()"><?= __('copy') ?></button>
                                </div>
                                <p class="text-warning small mt-3 mb-0">
                                    <i class="bi bi-exclamation-triangle-fill me-1"></i>
                                    <?= __('crypto_recharge_warning') ?>
                                </p>
                            </div>

                            <div class="mb-4">
                                <label class="form-label text-white-50 small fw-bold mb-2"><?= __('recharge_amount') ?></label>
                                <div class="input-group">
                                    <input type="number" class="form-control bg-dark border-secondary text-white py-3" id="cryptoAmount" placeholder="0.00">
                                    <span class="input-group-text bg-dark border-secondary text-white-50 fw-bold">USDT</span>
                                </div>
                            </div>

                            <button type="button" class="btn btn-primary w-100 py-3 rounded-pill fw-bold shadow-lg" onclick="confirmCryptoOrder(this, event)">
                                <?= __('i_have_paid') ?>
                            </button>

                            <div class="mt-5 p-4 bg-black bg-opacity-20 rounded-4 border border-secondary border-opacity-50">
                                <h6 class="text-white fw-bold mb-3 d-flex align-items-center gap-2">
                                    <i class="bi bi-info-circle text-info"></i> <?= __('recharge_steps') ?>
                                </h6>
                                <ul class="text-white-50 small mb-0 ps-3">
                                    <li class="mb-2"><?= __('recharge_step1') ?></li>
                                    <li class="mb-2"><?= __('recharge_step2') ?></li>
                                    <li class="mb-2"><?= __('recharge_step3') ?></li>
                                    <li><?= __('recharge_step4') ?></li>
                                </ul>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
    @media (max-width: 768px) {
        .container { padding-left: 10px !important; padding-right: 10px !important; }
        .card-body { padding: 1.25rem !important; }
        .nav-pills .nav-link { padding: 10px 15px !important; font-size: 13px; }
        .h4 { font-size: 1.25rem !important; }
    }
</style>

<!-- Recharge Confirmation Modal -->
<div class="modal fade" id="rechargeModal" data-bs-backdrop="static" data-bs-keyboard="false" tabindex="-1">
    <div class="modal-dialog modal-xl modal-dialog-centered">
        <div class="modal-content border-0 shadow-lg overflow-hidden" style="border-radius: 24px; background: #ffffff;">
            <div class="modal-body p-0">
                <div class="row g-0">
                    <!-- Left Side: Online Service -->
                    <div class="col-lg-6 d-flex flex-column border-end border-light order-2 order-lg-1 chat-column" style="background: #fff0f5;">
                        <div class="p-4 border-bottom border-light bg-white bg-opacity-50">
                            <div class="d-flex align-items-center gap-3">
                                <div class="position-relative">
                                    <div class="bg-primary rounded-circle d-flex align-items-center justify-content-center shadow-sm" style="width: 48px; height: 48px; background: #ff4d94 !important;">
                                        <i class="bi bi-headset text-white fs-4"></i>
                                    </div>
                                    <div class="position-absolute bottom-0 end-0 bg-success border border-2 border-white rounded-circle" style="width: 14px; height: 14px;"></div>
                                </div>
                                <div class="flex-grow-1">
                                    <h6 class="mb-0 fw-bold text-dark fs-5"><?= __('online_support') ?></h6>
                                    <div class="d-flex align-items-center gap-2 mt-1">
                                        <span class="badge bg-primary bg-opacity-10 text-primary border border-primary border-opacity-10 small px-2 py-1" style="color: #ff4d94 !important; border-color: #ff4d94 !important;"><?= __('online') ?></span>
                                        <span class="text-muted small"><?= __('ip') ?></span> 
                                        <span class="text-dark small fw-bold"><?= getRealIP() ?></span>
                                    </div>
                                </div>
                                <button type="button" class="btn-close ms-auto shadow-none" data-bs-dismiss="modal"></button>
                            </div>
                        </div>

                        <div id="modal-chat-messages" class="flex-grow-1 p-4 overflow-y-auto" style="scrollbar-width: thin; background: #fff0f5; min-height: 300px;">
                            <div class="text-center text-muted small mb-4 py-3 bg-white rounded-3 border border-light">
                                <i class="bi bi-shield-lock-fill text-success me-2"></i><?= __('welcome_support') ?>
                            </div>
                        </div>

                        <div class="p-4 bg-white border-top border-light">
                            <form id="modal-chat-form" class="d-flex gap-2 align-items-center">
                                <input type="file" id="modal-chat-file" class="d-none" accept="image/*">
                                <button type="button" id="modal-chat-upload" class="btn btn-light border-0 rounded-circle d-flex align-items-center justify-content-center" style="width: 42px; height: 42px; background: #ffe4e1;">
                                    <i class="bi bi-plus-lg text-primary fs-5" style="color: #ff4d94 !important;"></i>
                                </button>
                                <div class="flex-grow-1 position-relative">
                                    <input type="text" id="modal-chat-input" class="form-control bg-light border-0 py-2 ps-3 rounded-pill shadow-none" placeholder="<?= __('type_message') ?>" style="height: 42px;">
                                </div>
                                <button type="submit" class="btn btn-primary rounded-circle d-flex align-items-center justify-content-center shadow-sm" style="width: 42px; height: 42px; background: #ff4d94 !important; border: none;">
                                    <i class="bi bi-send-fill text-white"></i>
                                </button>
                            </form>
                        </div>
                    </div>

                    <!-- Right Side: Account Matching -->
                    <div class="col-lg-6 p-4 p-lg-5 d-flex flex-column justify-content-center info-side position-relative overflow-hidden order-1" style="background: #fff;">
                        <div class="text-center text-lg-start position-relative" style="z-index: 2;">
                            <div class="mb-4 text-center">
                                <div class="d-inline-flex align-items-center gap-2 px-3 py-2 rounded-pill bg-primary bg-opacity-10 text-primary small fw-bold mb-3 border border-primary border-opacity-10" style="color: #ff4d94 !important; border-color: #ff4d94 !important;">
                                    <span class="pulse-dot-pink"></span> <span style="letter-spacing: 1px;"><?= __('waiting_allocation') ?></span>
                                </div>
                                <h2 class="fw-bold text-dark mb-3" style="font-size: 2rem;"><?= __('matching_account') ?></h2>
                                <p class="text-muted fw-medium mb-0" style="font-size: 15px;">
                                    <?= __('matching_desc') ?>
                                </p>
                            </div>

                            <div class="mb-4 py-4 px-4 rounded-4 border border-light shadow-sm" style="background: #fff0f5;">
                                <div class="row align-items-center text-center">
                                    <div class="col-12 mb-3">
                                        <div class="text-muted small mb-1 fw-bold"><?= __('waiting_countdown') ?></div>
                                        <div class="display-5 fw-bold text-primary mb-0" id="modal-countdown" style="font-family: 'Monaco', 'Consolas', monospace; color: #ff4d94 !important;">30:00</div>
                                    </div>
                                    <div class="col-12 border-top border-white pt-3">
                                        <div class="text-muted small mb-2 fw-bold"><?= __('secure_channel') ?></div>
                                        <div class="d-flex justify-content-center gap-1">
                                            <div class="rounded-pill" style="width: 25px; height: 6px; background: #ff4d94;"></div>
                                            <div class="rounded-pill" style="width: 25px; height: 6px; background: #ff4d94;"></div>
                                            <div class="rounded-pill" style="width: 25px; height: 6px; background: #ff4d94;"></div>
                                        </div>
                                    </div>
                                </div>
                            </div>

                            <div class="p-4 rounded-4 bg-light border border-light">
                                <h6 class="text-dark fw-bold mb-3 d-flex align-items-center gap-2">
                                    <i class="bi bi-shield-lock-fill text-primary fs-5" style="color: #ff4d94 !important;"></i> <?= __('security_tips') ?>
                                </h6>
                                <div class="text-muted small lh-lg">
                                    <div class="mb-2 d-flex gap-2">
                                        <i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> 
                                        <span><?= __('recharge_instruction_1') ?></span>
                                    </div>
                                    <div class="mb-2 d-flex gap-2">
                                        <i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> 
                                        <span><?= __('recharge_instruction_2') ?></span>
                                    </div>
                                    <div class="d-flex gap-2">
                                        <i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> 
                                        <span><?= __('recharge_instruction_3') ?></span>
                                    </div>
                                </div>
                                <div class="mt-4">
                                    <button type="button" class="btn btn-primary w-100 rounded-pill py-2 fw-bold opacity-50" disabled style="background: #ff4d94 !important; border: none;">
                                        <?= __('waiting_system_allocation') ?>...
                                    </button>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
.pulse-dot-pink {
    width: 8px;
    height: 8px;
    background-color: #ff4d94;
    border-radius: 50%;
    display: inline-block;
    animation: dot-pulse-pink 1.5s infinite;
}
@keyframes dot-pulse-pink {
    0% { transform: scale(0.95); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.6; }
}
#modal-chat-messages::-webkit-scrollbar { width: 4px; }
#modal-chat-messages::-webkit-scrollbar-track { background: transparent; }
#modal-chat-messages::-webkit-scrollbar-thumb { background: #ff4d9422; border-radius: 10px; }
.msg-bubble { box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
@media (max-width: 992px) {
    .chat-column { display: none !important; }
    .info-side { width: 100% !important; border-radius: 24px !important; }
}
</style>

<style>
.vibrancy-bg {
    background: linear-gradient(135deg, #1e1e1e 0%, #ff4d94 40%, #ff80ab 70%, #f48fb1 100%);
    background-size: 400% 400%;
    animation: gradientFlow 6s ease-in-out infinite;
}
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.text-shadow-ultra { 
    text-shadow: 0 0 10px rgba(0,0,0,0.8), 0 0 20px rgba(255,77,148,0.5), 0 4px 12px rgba(0,0,0,0.9); 
    letter-spacing: 0.5px;
}
.text-shadow-heavy { 
    text-shadow: 2px 2px 10px rgba(0,0,0,0.9), 0 0 5px rgba(0,0,0,0.7);
    font-weight: 800 !important;
}
.text-shadow-medium { 
    text-shadow: 1px 1px 5px rgba(0,0,0,0.8);
    font-weight: 600 !important;
}
.text-shadow-glow { 
    text-shadow: 0 0 20px rgba(255,77,148,0.7), 0 0 10px rgba(255,77,148,0.4), 2px 2px 4px rgba(0,0,0,0.9); 
}
.text-shadow-glow-sm { 
    text-shadow: 0 0 10px rgba(255,77,148,0.7), 1px 1px 3px rgba(0,0,0,0.9); 
}
.shadow-glow-green { box-shadow: 0 0 25px rgba(255,77,148,0.5); }
.shadow-2xl { box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8); }

.payment-item .h5, .payment-item .h4 {
    letter-spacing: 0.5px;
}

.payment-item .btn-light {
    background: rgba(255,255,255,0.9);
    border: none;
    color: #ff4d94;
}
.payment-item .btn-light:hover {
    background: #ffffff;
    transform: translateY(-1px);
}

.hover-scale-sm:hover { transform: translateX(5px); background: rgba(0,0,0,0.4) !important; }

.pulse-dot-white {
    width: 8px;
    height: 8px;
    background-color: #fff;
    border-radius: 50%;
    display: inline-block;
    animation: dot-pulse-white 1.5s infinite;
    box-shadow: 0 0 8px rgba(255,255,255,0.8);
}
@keyframes dot-pulse-white {
    0% { transform: scale(0.95); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.6; }
}

#modal-chat-messages::-webkit-scrollbar {
    width: 6px;
}
#modal-chat-messages::-webkit-scrollbar-track {
    background: transparent;
}
#modal-chat-messages::-webkit-scrollbar-thumb {
    background: rgba(255,77,148,0.3);
    border-radius: 10px;
}
#modal-chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(255,77,148,0.5);
}
.modal-msg .msg-bubble {
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
@media (max-width: 992px) {
    .chat-column { display: none !important; }
    .info-side { 
        width: 100% !important; 
        min-height: 100vh !important;
        border-radius: 24px !important;
    }
    .modal-dialog { margin: 0; }
    .modal-content { border-radius: 0; height: 100vh; }
}

/* Premium Desktop Styling */
.modal-content {
    box-shadow: 0 10px 40px rgba(0,0,0,0.1), 0 0 20px rgba(255,77,148,0.1) !important;
    background: #ffffff !important;
    border: 1px solid #ff4d9422 !important;
    border-radius: 30px !important;
}
.chat-column {
    background: #fff0f5 !important;
}
.msg-bubble.bg-primary {
    background: #ff4d94 !important;
}
.btn-primary {
    background: #ff4d94 !important;
    border: none !important;
    box-shadow: 0 4px 12px rgba(255, 77, 148, 0.2) !important;
}
.text-primary {
    color: #ff4d94 !important;
}
</style>

<script>
let currentNetwork = 'TRC20';
let currentAddress = '<?= $trc20_addr ?>';
const userId = '<?= $user['uid'] ?? $user['id'] ?>';
let rechargeCountdownInterval;
let modalChatLastIds = new Set();
let remainingSeconds = 1800;
let modalChatPolling = false;

function notify(icon, title, text = '') {
    return Swal.fire({
        icon: icon,
        title: title,
        text: text,
        background: '#1e2329',
        color: '#fff',
        confirmButtonColor: '#0062ff',
        confirmButtonText: '<?= __("confirm") ?>'
    });
}

function updateRate() {
    const select = document.getElementById('fiatCurrency');
    const symbol = select.value;
    const rate = select.options[select.selectedIndex].getAttribute('data-rate');
    document.getElementById('selectedCurrencyLabel').innerText = symbol;
    document.getElementById('currentRateText').innerText = `${rate} ${symbol}`;
    calculateUSDT();
}

function calculateUSDT() {
    const amount = parseFloat(document.getElementById('fiatAmount').value) || 0;
    const select = document.getElementById('fiatCurrency');
    const rate = parseFloat(select.options[select.selectedIndex].getAttribute('data-rate'));
    const est = amount / rate;
    document.getElementById('estUsdt').innerText = est.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}) + ' USDT';
}

function selectNetwork(net, addr) {
    currentNetwork = net;
    currentAddress = addr;
    const btns = document.querySelectorAll('#networkSelectors button');
    btns.forEach(btn => {
        if (btn.innerText === net) {
            btn.classList.add('active', 'btn-outline-primary');
            btn.classList.remove('btn-outline-secondary');
        } else {
            btn.classList.remove('active', 'btn-outline-primary');
            btn.classList.add('btn-outline-secondary');
        }
    });
    document.getElementById('cryptoAddress').value = addr;
    document.getElementById('qrCode').src = `https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=${addr}`;
}

function saveRechargeState(state) {
    localStorage.setItem('recharge_state', JSON.stringify({
        ...state,
        timestamp: Date.now(),
        remainingSeconds: remainingSeconds
    }));
}

function clearRechargeState() {
    localStorage.removeItem('recharge_state');
    if (rechargeCountdownInterval) clearInterval(rechargeCountdownInterval);
    if (window.statusPollingInterval) clearInterval(window.statusPollingInterval);
}

function finishTransfer() {
    const state = JSON.parse(localStorage.getItem('recharge_state') || '{}');
    const orderId = state.orderId;
    if (orderId) {
        const formData = new FormData();
        formData.append('action', 'complete_transfer');
        formData.append('order_id', orderId);
        fetch('/api/finance.php', { method: 'POST', body: formData })
            .then(r => r.json())
            .then(data => { if (data.success) finishTransferUI(); });
    } else {
        finishTransferUI();
    }
}

function finishTransferUI() {
    clearRechargeState();
    const modalEl = document.getElementById('rechargeModal');
    const modalInstance = bootstrap.Modal.getInstance(modalEl);
    if (modalInstance) modalInstance.hide();
    notify('success', '<?= __("recharge_success_title") ?>', '<?= __("recharge_success_text") ?>');
}

function openRechargeModal(initialMessage, isRestore = false, orderId = null) {
    const modalElement = document.getElementById('rechargeModal');
    if (!modalElement) return;
    const modal = new bootstrap.Modal(modalElement);
    modal.show();
    
    const currentOrderId = orderId || JSON.parse(localStorage.getItem('recharge_state') || '{}').orderId;
    
    if (!isRestore) {
        remainingSeconds = 1800;
        saveRechargeState({ phase: 'pending', initialMessage, orderId: currentOrderId });
        sendModalMessage(initialMessage); // Automatically notify admin about the new recharge request
    }
    
    if (currentOrderId) startStatusPolling(currentOrderId);
    
    if (rechargeCountdownInterval) clearInterval(rechargeCountdownInterval);
    rechargeCountdownInterval = setInterval(() => {
        const display = document.querySelectorAll('#modal-countdown');
        let mins = Math.floor(remainingSeconds / 60);
        let secs = remainingSeconds % 60;
        const timeStr = `${mins}:${secs < 10 ? '0' : ''}${secs}`;
        display.forEach(d => d.innerText = timeStr);
        
        const state = JSON.parse(localStorage.getItem('recharge_state') || '{}');
        state.remainingSeconds = remainingSeconds;
        localStorage.setItem('recharge_state', JSON.stringify(state));
        if (--remainingSeconds < 0) clearInterval(rechargeCountdownInterval);
    }, 1000);

    if (!isRestore) renderRechargeUI({ status: 'pending' });
    initModalChat();
}

function startStatusPolling(orderId) {
    if (window.statusPollingInterval) clearInterval(window.statusPollingInterval);
    const checkStatus = async () => {
        const modalEl = document.getElementById('rechargeModal');
        if (!modalEl || !modalEl.classList.contains('show')) return;
        try {
            const r = await fetch(`/api/recharge_status.php?id=${orderId}&_t=${Date.now()}`);
            const data = await r.json();
            if (data.success) {
                console.log('Order status update:', data.status, data);
                renderRechargeUI(data);
                if (data.status === 'finished') clearInterval(window.statusPollingInterval);
            }
        } catch (e) { console.error('Status polling error:', e); }
    };
    checkStatus();
    window.statusPollingInterval = setInterval(checkStatus, 2000);
}

function renderRechargeUI(data) {
    const side = document.querySelector('.info-side');
    if (!side) return;
    const status = data.status;
    if (status === 'finished' || status === '3') { finishTransferUI(); return; }

    if (status === 'pending' || status === '0') {
        side.innerHTML = `
            <div class="text-center text-lg-start position-relative" style="z-index: 2;">
                <div class="mb-4 text-center">
                    <div class="d-inline-flex align-items-center gap-2 px-3 py-2 rounded-pill bg-primary bg-opacity-10 text-primary small fw-bold mb-3 border border-primary border-opacity-10" style="color: #ff4d94 !important; border-color: #ff4d94 !important;">
                        <span class="pulse-dot-pink"></span> <span style="letter-spacing: 1px;">正在为您匹配充值账户</span>
                    </div>
                    <h2 class="fw-bold text-dark mb-3" style="font-size: 2rem;">正在为您匹配充值账户</h2>
                    <p class="text-muted fw-medium mb-0" style="font-size: 15px;">系统正在为您分配专属收款账户，请耐心等待。<br>匹配成功后，页面将自动更新收款信息。<br>请勿关闭当前页面。</p>
                </div>
                <div class="mb-4 py-4 px-4 rounded-4 border border-light shadow-sm" style="background: #fff0f5;">
                    <div class="row align-items-center text-center">
                        <div class="col-12 mb-3">
                            <div class="text-muted small mb-1 fw-bold"><?= __('waiting_countdown') ?></div>
                            <div class="display-5 fw-bold text-primary mb-0" id="modal-countdown" style="font-family: monospace; color: #ff4d94 !important;">30:00</div>
                        </div>
                    </div>
                </div>
                <div class="p-4 rounded-4 bg-light border border-light">
                    <h6 class="text-dark fw-bold mb-3 d-flex align-items-center gap-2"><i class="bi bi-shield-lock-fill text-primary" style="color: #ff4d94 !important;"></i> <?= __('security_tips') ?></h6>
                    <div class="text-muted small lh-lg">
                        <div class="mb-2 d-flex gap-2"><i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> <span><?= __('recharge_instruction_1') ?></span></div>
                        <div class="mb-2 d-flex gap-2"><i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> <span><?= __('recharge_instruction_2') ?></span></div>
                        <div class="d-flex gap-2"><i class="bi bi-check2-circle text-primary" style="color: #ff4d94 !important;"></i> <span><?= __('recharge_instruction_3') ?></span></div>
                    </div>
                    <div class="mt-4"><button type="button" class="btn btn-primary w-100 rounded-pill py-2 fw-bold opacity-50" disabled style="background: #ff4d94 !important; border: none;">正在获取账户详情...</button></div>
                </div>
            </div>`;
    } else if (status === 'matched') {
        side.innerHTML = `
            <div class="text-center text-lg-start position-relative" style="z-index: 2;">
                <div class="mb-4 text-center">
                    <div class="d-inline-flex align-items-center gap-2 px-3 py-2 rounded-pill bg-success bg-opacity-10 text-success small fw-bold mb-3 border border-success border-opacity-10">
                        <i class="bi bi-check-circle-fill text-success"></i> 匹配成功
                    </div>
                    <h2 class="fw-bold text-dark mb-3" style="font-size: 2rem;">匹配成功</h2>
                    <p class="text-muted fw-medium mb-0" style="font-size: 15px;">您的充值订单已匹配成功。<br>客服正在为您发送收款账户信息，请稍候。<br>页面将自动显示收款账户，请勿刷新或关闭页面。</p>
                </div>
                <div class="mb-4 py-4 px-4 rounded-4 border border-light shadow-sm" style="background: #fff0f5;">
                    <div class="row align-items-center text-center">
                        <div class="col-12 mb-3">
                            <div class="text-muted small mb-1 fw-bold"><?= __('waiting_countdown') ?></div>
                            <div class="display-5 fw-bold text-primary mb-0" id="modal-countdown" style="font-family: monospace; color: #ff4d94 !important;">30:00</div>
                        </div>
                    </div>
                </div>
                <div class="p-4 rounded-4 bg-light border border-light">
                    <h6 class="text-dark fw-bold mb-3 d-flex align-items-center gap-2"><i class="bi bi-shield-lock-fill text-primary" style="color: #ff4d94 !important;"></i> <?= __('security_tips') ?></h6>
                    <div class="mt-4"><button type="button" class="btn btn-primary w-100 rounded-pill py-2 fw-bold opacity-50" disabled style="background: #ff4d94 !important; border: none;">正在获取账户详情...</button></div>
                </div>
            </div>`;
    } else if (status === 'account_sent') {
        const bank = data.account_bank || '---';
        const account = data.account_number || '---';
        const name = data.account_name || '---';
        side.innerHTML = `
            <div class="text-center text-lg-start">
                <div class="mb-4 text-center">
                    <div class="d-inline-flex align-items-center gap-2 px-3 py-1 rounded-pill bg-success bg-opacity-10 text-success small fw-bold mb-3 border border-success border-opacity-10"><i class="bi bi-check-circle-fill text-success"></i> 匹配成功</div>
                    <h2 class="fw-bold text-dark mb-2" style="font-size: 1.8rem;">请按照以下账户信息进行转账</h2>
                </div>
                <div class="mb-3 p-4 rounded-4 shadow-sm border border-light" style="background: #fff0f5;">
                    <div class="d-flex flex-column gap-3">
                        <div class="payment-item">
                            <div class="text-muted small mb-1 fw-bold text-start"><?= __("receiving_bank") ?>：</div>
                            <div class="d-flex justify-content-between align-items-center gap-2">
                                <div class="h6 mb-0 fw-bold text-dark text-start" style="word-break: break-all; font-size: 1.1rem;">${bank}</div>
                                <button class="btn btn-sm rounded-pill px-3 fw-bold flex-shrink-0" style="font-size: 10px; background: #ff4d94; color: white;" onclick="copyText('${bank}')"><?= __("copy") ?></button>
                            </div>
                        </div>
                        <div class="payment-item border-top border-white border-opacity-50 pt-2">
                            <div class="text-muted small mb-1 fw-bold text-start"><?= __("receiving_account") ?>：</div>
                            <div class="d-flex justify-content-between align-items-center gap-2">
                                <div class="h5 mb-0 fw-bold text-start" style="word-break: break-all; font-family: monospace; font-size: 1.3rem; color: #ff4d94;">${account}</div>
                                <button class="btn btn-sm rounded-pill px-3 fw-bold flex-shrink-0" style="font-size: 10px; background: #ff4d94; color: white;" onclick="copyText('${account}')"><?= __("copy") ?></button>
                            </div>
                        </div>
                        <div class="payment-item border-top border-white border-opacity-50 pt-2">
                            <div class="text-muted small mb-1 fw-bold text-start"><?= __("receiving_name") ?>：</div>
                            <div class="d-flex justify-content-between align-items-center gap-2">
                                <div class="h6 mb-0 fw-bold text-dark text-start" style="word-break: break-all; font-size: 1.1rem;">${name}</div>
                                <button class="btn btn-sm rounded-pill px-3 fw-bold flex-shrink-0" style="font-size: 10px; background: #ff4d94; color: white;" onclick="copyText('${name}')"><?= __("copy") ?></button>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="mb-3 py-3 px-4 rounded-4 shadow-sm border border-light" style="background: #ffffff;">
                    <div class="row align-items-center text-center text-lg-start">
                        <div class="col-12 col-lg-7 mb-2 mb-lg-0">
                            <div class="text-muted small mb-0 fw-bold"><?= __("remaining_time") ?></div>
                            <div class="h2 fw-bold mb-0" id="modal-countdown" style="font-family: monospace; color: #ff4d94;">--:--</div>
                        </div>
                        <div class="col-12 col-lg-5 border-start-lg border-light ps-lg-3">
                            <div class="small fw-bold" style="color: #ff4d94;"><i class="bi bi-shield-check me-1"></i><?= __("secure_pay") ?></div>
                            <div class="text-muted" style="font-size: 10px;"><?= __("encrypted_channel") ?></div>
                        </div>
                    </div>
                </div>
                <div class="p-2 text-center mb-3"><p class="text-muted small fw-bold mb-0">请严格按照页面展示的收款账户信息进行转账。<br>请勿分笔转账或修改信息，转账完成后，请点击“完成转账”按钮。<br>转账完成后请提交转账凭证给在线客服，方便第一时间为你确认到账。</p></div>
                <button type="button" class="btn btn-primary w-100 rounded-pill py-3 fw-bold shadow-sm" onclick="finishTransfer()" style="background: #ff4d94 !important; border: none; color: white;">【完成转账】</button>
            </div>`;
    }
    
    // Sync countdown if exists
    if (remainingSeconds > 0) {
        let mins = Math.floor(remainingSeconds / 60), secs = remainingSeconds % 60;
        const timeStr = `${mins}:${secs < 10 ? '0' : ''}${secs}`;
        document.querySelectorAll('#modal-countdown').forEach(d => d.innerText = timeStr);
    }
}

document.addEventListener('DOMContentLoaded', async () => {
    const savedState = localStorage.getItem('recharge_state');
    if (savedState) {
        const state = JSON.parse(savedState);
        const elapsed = Math.floor((Date.now() - state.timestamp) / 1000);
        remainingSeconds = (state.remainingSeconds || 1800) - elapsed;
        if (remainingSeconds > 0 && state.orderId) {
            openRechargeModal(state.initialMessage, true, state.orderId);
            try {
                const r = await fetch(`/api/recharge_status.php?id=${state.orderId}&_t=${Date.now()}`);
                const data = await r.json();
                if (data.success) {
                    renderRechargeUI(data);
                }
            } catch (e) {}
        } else { localStorage.removeItem('recharge_state'); }
    }
});

function initModalChat() {
    if (modalChatPolling) return;
    modalChatPolling = true;
    const modalChatForm = document.getElementById('modal-chat-form'), modalChatInput = document.getElementById('modal-chat-input');
    const modalChatUpload = document.getElementById('modal-chat-upload'), modalChatFile = document.getElementById('modal-chat-file');
    if (!modalChatForm || !modalChatUpload || !modalChatFile) return;

    modalChatUpload.onclick = () => modalChatFile.click();
    modalChatFile.onchange = async () => {
        if (!modalChatFile.files[0]) return;
        const file = modalChatFile.files[0], tempId = 'modal_temp_img_' + Date.now(), localUrl = URL.createObjectURL(file);
        appendModalMessage({ id: tempId, sender: 'user', message: `<img src="${localUrl}" class="img-fluid rounded" style="max-height: 250px; opacity: 0.6;">`, created_at: new Date().toISOString() });
        scrollModalToBottom();
        const formData = new FormData(); formData.append('file', file); formData.append('action', 'upload_image');
        try {
            const resp = await fetch('/api/chat.php', { method: 'POST', body: formData }), data = await resp.json();
            document.querySelector(`[data-modal-id="${tempId}"]`)?.remove();
            if (data.success) { appendModalMessage(data.message); scrollModalToBottom(); }
        } catch (err) { console.error(err); }
        modalChatFile.value = ''; setTimeout(() => URL.revokeObjectURL(localUrl), 5000);
    };
    modalChatForm.onsubmit = async (e) => {
        e.preventDefault(); const msg = modalChatInput.value.trim(); if (!msg) return;
        modalChatInput.value = ''; const tempId = 'modal_temp_msg_' + Date.now();
        appendModalMessage({ id: tempId, sender: 'user', message: msg, created_at: new Date().toISOString() });
        scrollModalToBottom();
        try {
            const resp = await fetch('/api/chat.php?action=send_message', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` });
            const data = await resp.json();
            document.querySelector(`[data-modal-id="${tempId}"]`)?.remove();
            if (data.success) { appendModalMessage(data.message); scrollModalToBottom(); }
        } catch (err) { console.error(err); }
    };
    const modalPoll = async () => {
        if (!document.getElementById('rechargeModal').classList.contains('show')) {
            modalChatPolling = false;
            return;
        }
        try {
            fetch(`/api/chat.php?action=ping&user_time=${encodeURIComponent(new Date().toLocaleString())}`);
            const resp = await fetch('/api/chat.php?action=get_messages'), data = await resp.json();
            if (Array.isArray(data)) { data.forEach(m => { if (!modalChatLastIds.has(m.id)) { appendModalMessage(m); modalChatLastIds.add(m.id); scrollModalToBottom(); } }); }
        } catch (err) {}
        setTimeout(modalPoll, 2000);
    };
    modalPoll();
}

async function sendModalMessage(msg) {
    try { await fetch('/api/chat.php?action=send_message', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: `message=${encodeURIComponent(msg)}` }); } catch (err) {}
}

function appendModalMessage(m) {
    const container = document.getElementById('modal-chat-messages');
    if (!container || document.querySelector(`[data-modal-id="${m.id}"]`)) return;
    const sender = m.sender; let text = (m.message || '').toString(), displayMsg = text;
    const isImage = text.includes('<img') || text.includes('/assets/images/chat/') || text.includes('data:image');
    if (isImage && !displayMsg.includes('<img')) displayMsg = `<img src="${displayMsg.includes('assets/') ? '/'+displayMsg : displayMsg}" class="img-fluid rounded" style="max-height: 250px; cursor: zoom-in;" onclick="window.open(this.src)">`;
    let timeStr = ''; try { const d = m.created_at ? (m.created_at.includes('-') ? new Date(m.created_at.replace(/-/g, "/")) : new Date(m.created_at)) : new Date(); timeStr = d.toLocaleTimeString('zh-CN', {hour:'2-digit', minute:'2-digit'}); } catch(e) { timeStr = '--:--'; }
    const html = `
        <div class="mb-3 d-flex flex-column ${sender === 'user' ? 'align-items-end' : 'align-items-start'} modal-msg" data-modal-id="${m.id}">
            <div class="msg-bubble p-2 px-3 rounded-4 small ${sender === 'user' ? 'bg-primary text-white' : 'bg-dark text-white border border-secondary border-opacity-30'}" style="max-width: 85%; position: relative; padding-bottom: 22px !important;">
                <div class="message-content">${displayMsg}</div>
                <div style="font-size: 9px; opacity: 0.6; position: absolute; bottom: 4px; ${sender === 'user' ? 'right: 12px;' : 'left: 12px;'}">${timeStr}</div>
            </div>
        </div>`;
    container.insertAdjacentHTML('beforeend', html); modalChatLastIds.add(m.id);
}

function copyText(text) {
    const el = document.createElement('textarea'); el.value = text; document.body.appendChild(el); el.select(); document.execCommand('copy'); document.body.removeChild(el);
    Swal.fire({ icon: 'success', title: '<?= __("copy_success") ?>', toast: true, position: 'top-end', showConfirmButton: false, timer: 2000 });
}

function scrollModalToBottom() { const c = document.getElementById('modal-chat-messages'); if (c) c.scrollTop = c.scrollHeight; }

function confirmFiatOrder(btn, event) {
    if (event) event.preventDefault();
    const amount = parseFloat(document.getElementById('fiatAmount').value), select = document.getElementById('fiatCurrency'), currency = select.value, rate = parseFloat(select.options[select.selectedIndex].getAttribute('data-rate'));
    if (isNaN(amount) || amount <= 0) { notify('warning', '<?= __("enter_amount") ?>'); return; }
    const originalText = btn.innerHTML; btn.disabled = true; btn.innerHTML = `<span class="spinner-border spinner-border-sm me-2"></span>${originalText}`;
    const formData = new FormData(); formData.append('action', 'recharge'); formData.append('amount', amount / rate); formData.append('symbol', 'USDT'); formData.append('fiat_amount', amount); formData.append('fiat_currency', currency); formData.append('method', '<?= __("fiat_recharge") ?> (' + currency + ')');
    fetch('/api/finance.php', { method: 'POST', body: formData }).then(r => r.json()).then(data => {
        btn.disabled = false; btn.innerHTML = originalText;
        if (data.success) {
            let msg = `<?= __("recharge_msg_fiat") ?>`; msg = msg.replace('%uid%', userId).replace('%amount%', amount).replace('%currency%', currency).replace('%rate%', rate).replace('%res%', (amount / rate).toFixed(4));
            openRechargeModal(msg, false, data.id);
        } else notify('error', data.error || '<?= __("request_failed") ?>');
    }).catch(err => { btn.disabled = false; btn.innerHTML = originalText; notify('error', err.message); });
}

function confirmCryptoOrder(btn, event) {
    if (event) event.preventDefault();
    const amountInput = document.getElementById('cryptoAmount'), amount = parseFloat(amountInput.value);
    if (isNaN(amount) || amount <= 0) { notify('warning', '<?= __("enter_amount") ?>'); return; }
    const originalText = btn.innerHTML; btn.disabled = true; btn.innerHTML = `<span class="spinner-border spinner-border-sm me-2"></span>${originalText}`;
    const formData = new FormData(); formData.append('action', 'recharge'); formData.append('amount', amount); formData.append('symbol', 'USDT'); formData.append('method', currentNetwork);
    fetch('/api/finance.php', { method: 'POST', body: formData }).then(r => r.json()).then(data => {
        btn.disabled = false; btn.innerHTML = originalText;
        if (data.success) { Swal.fire({ icon: 'success', title: '<?= __("recharge_request_submitted") ?>', text: '<?= __("recharge_request_submitted_text") ?>', toast: true, position: 'top-end', showConfirmButton: false, timer: 3000 }); amountInput.value = ''; }
        else notify('error', data.error || '<?= __("request_failed") ?>');
    }).catch(err => { btn.disabled = false; btn.innerHTML = originalText; notify('error', err.message); });
}

function copyAddress() {
    const addr = document.getElementById('cryptoAddress'); addr.select(); document.execCommand('copy');
    Swal.fire({ icon: 'success', title: '<?= __("copy_success") ?>', toast: true, position: 'top-end', showConfirmButton: false, timer: 3000, background: '#1e2329', color: '#fff' });
}
</script>

<?php require_once __DIR__ . '/includes/footer.php'; ?>
