{% extends "base.html" %}

{% block title_extra %} — {{ _('share_title') }}{% endblock %}

{% block content %}
<div class="card" style="max-width: 600px; margin: 2rem auto;">
    <div class="card-header"
        style="justify-content: center; text-align: center; flex-direction: column; gap: var(--space-xs);">
        <h2 class="card-title">{{ _('vpn_access') }}</h2>
        <p style="color: var(--text-muted); font-size: 0.9rem;">{{ _('user_label_share') }}: <strong>{{
                share_user.username }}</strong>
        </p>
    </div>

    {% if need_password %}
    <div style="padding: var(--space-lg); text-align: center;">
        <div class="logo-icon" style="font-size: 3rem; margin-bottom: var(--space-md);">🔐</div>
        <p style="margin-bottom: var(--space-md);">{{ _('share_protected_desc') }}
        </p>

        <form id="authForm" onsubmit="authShare(event)"
            style="display: flex; flex-direction: column; gap: var(--space-md); max-width: 300px; margin: 0 auto;">
            <div class="form-group">
                <input type="password" id="sharePassword" class="form-input" placeholder="{{ _('password') }}" required
                    autofocus>
            </div>
            <button type="submit" class="btn btn-primary" id="authBtn">
                <span id="authBtnText">{{ _('login') }}</span>
                <div class="spinner hidden" id="authSpinner"></div>
            </button>
        </form>
    </div>
    {% else %}
    <div id="connectionsList" style="padding: var(--space-md);">
        <div style="text-align: center; padding: 2rem;" id="loadingState">
            <div class="spinner" style="width: 40px; height: 40px; margin: 0 auto;"></div>
            <p style="margin-top: 1rem; color: var(--text-muted);">{{ _('loading_share_conns') }}</p>
        </div>
        <div id="connectionsGrid" class="hidden" style="display: grid; gap: var(--space-md);">
            <!-- Connections will be here -->
        </div>
        <div id="emptyState" class="hidden" style="text-align: center; padding: 2rem;">
            <p style="color: var(--text-muted);">{{ _('no_active_conns') }}</p>
        </div>
    </div>
    {% endif %}
</div>

<!-- Modal for Config -->
<div class="modal-backdrop" id="configModal">
    <div class="modal" style="max-width: 600px;">
        <div class="modal-header">
            <h2 class="modal-title" id="configModalTitle">{{ _('config') }}</h2>
            <button class="modal-close" onclick="closeModal('configModal')">×</button>
        </div>

        <div class="config-tabs">
            <button class="config-tab active" onclick="switchConfigTab('conf')">{{ _('config_tab') }}</button>
            <button class="config-tab" onclick="switchConfigTab('vpn')">{{ _('vpn_key_tab') }}</button>
            <button class="config-tab" onclick="switchConfigTab('qr')">{{ _('qr_code_tab') }}</button>
        </div>

        <div class="config-panel active" id="panel-conf">
            <div class="config-display">
                <textarea class="config-text" id="configText" readonly rows="12"
                    style="width:100%; border:none; background:transparent; color:inherit; font-family:monospace; resize:none; outline:none;"></textarea>
                <div class="config-actions">
                    <button class="btn btn-secondary btn-sm" onclick="copyConfig()" style="flex:1">{{ _('copy_config')
                        }}</button>
                    <a id="downloadBtn" class="btn btn-primary btn-sm"
                        style="flex:1; text-decoration:none; display:flex; align-items:center; justify-content:center;">
                        {{ _('download_conf') }}
                    </a>
                </div>
            </div>
        </div>

        <div class="config-panel" id="panel-vpn">
            <div class="vpn-link-box" id="vpnLinkText" style="min-height: 100px;"></div>
            <div class="config-actions" style="margin-top:var(--space-sm);">
                <button class="btn btn-secondary btn-sm" onclick="copyVpnLink()" style="flex:1">{{ _('copy_key')
                    }}</button>
            </div>
        </div>

        <div class="config-panel" id="panel-qr">
            <div class="qr-container">
                <div id="qrcode"></div>
            </div>
        </div>
    </div>
</div>

<script>
    const TOKEN = "{{ token }}";

    async function authShare(e) {
        e.preventDefault();
        const password = document.getElementById('sharePassword').value;
        const btn = document.getElementById('authBtn');
        const text = document.getElementById('authBtnText');
        const spinner = document.getElementById('authSpinner');

        btn.disabled = true;
        text.classList.add('hidden');
        spinner.classList.remove('hidden');

        try {
            const res = await fetch(`/api/share/${TOKEN}/auth`, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ password })
            });
            const data = await res.json();
            if (data.status === 'success') {
                window.location.reload();
            } else {
                alert(data.error || _('login_error'));
            }
        } catch (err) {
            alert(`${_('error')}: ` + err.message);
        } finally {
            btn.disabled = false;
            text.classList.remove('hidden');
            spinner.classList.add('hidden');
        }
    }

    async function loadConnections() {
        if (document.getElementById('loadingState') === null) return;

        try {
            const res = await fetch(`/api/share/${TOKEN}/connections`);
            if (res.status === 401) return; // Wait for auth

            const data = await res.json();
            document.getElementById('loadingState').classList.add('hidden');

            if (!data.connections || data.connections.length === 0) {
                document.getElementById('emptyState').classList.remove('hidden');
                return;
            }

            const grid = document.getElementById('connectionsGrid');
            grid.classList.remove('hidden');
            grid.innerHTML = data.connections.map(c => `
            <div class="card" style="padding: var(--space-md); border: 1px solid var(--border-color);">
                <div style="display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: var(--space-sm);">
                    <div style="text-align: initial;">
                        <div style="font-weight: 600; font-size: 1.1rem;">${c.name}</div>
                        <div style="font-size: 0.8rem; color: var(--text-muted);">${c.protocol.toUpperCase()} • ${c.server_name}</div>
                    </div>
                    <span class="badge badge-success">${_('active')}</span>
                </div>
                <button class="btn btn-secondary btn-sm w-full" onclick="showConfig('${c.id}', '${c.name}')">
                    ${_('show_settings_btn')}
                </button>
            </div>
        `).join('');
        } catch (err) {
            console.error(err);
        }
    }

    function switchConfigTab(tab) {
        document.querySelectorAll('.config-tab').forEach(t => t.classList.remove('active'));
        document.querySelectorAll('.config-panel').forEach(p => p.classList.remove('active'));

        const tabs = document.querySelectorAll('.config-tab');
        const panels = { conf: 'panel-conf', vpn: 'panel-vpn', qr: 'panel-qr' };
        const tabIdx = { conf: 0, vpn: 1, qr: 2 };

        tabs[tabIdx[tab]].classList.add('active');
        document.getElementById(panels[tab]).classList.add('active');
    }

    let currentConfig = '';
    let currentVpnLink = '';

    async function showConfig(connId, name) {
        try {
            const res = await fetch(`/api/share/${TOKEN}/config/${connId}`, { method: 'POST' });
            const data = await res.json();
            if (data.error) throw new Error(data.error);

            currentConfig = data.config;
            currentVpnLink = data.vpn_link || '';

            document.getElementById('configText').value = data.config;
            document.getElementById('vpnLinkText').textContent = currentVpnLink;
            document.getElementById('configModalTitle').textContent = name;

            const dl = document.getElementById('downloadBtn');
            dl.onclick = () => downloadFile(data.config, `${name}.conf`);

            const qrContainer = document.getElementById('qrcode');
            qrContainer.innerHTML = '';
            new QRCode(qrContainer, {
                text: data.config,
                width: 256,
                height: 256,
                colorDark: "#000000",
                colorLight: "#ffffff",
                correctLevel: QRCode.CorrectLevel.L
            });

            switchConfigTab('conf');
            openModal('configModal');
        } catch (err) {
            alert(`${_('error')}: ` + err.message);
        }
    }

    function copyConfig() {
        copyToClipboard(currentConfig);
    }

    function copyVpnLink() {
        copyToClipboard(currentVpnLink);
    }

    document.addEventListener('DOMContentLoaded', loadConnections);
</script>

<style>
    .w-full {
        width: 100%;
    }

    .spinner {
        border: 3px solid rgba(255, 255, 255, 0.1);
        border-top: 3px solid var(--accent-color);
        border-radius: 50%;
        width: 20px;
        height: 20px;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        0% {
            transform: rotate(0deg);
        }

        100% {
            transform: rotate(360deg);
        }
    }
</style>
{% endblock %}