{% extends "base.html" %}
{% block title %}服务控制 - Squid Manager{% endblock %}
{% block content %}
{% set tokens = confirm_tokens() %}
<div class="page-header">
    <h1>🛠️ 服务控制</h1>
</div>

<div class="grid-2">
    <div class="card">
        <h3 class="card-title">📋 服务状态</h3>
        <table class="data-table">
            <tbody>
            <tr>
                <th>状态</th>
                <td>
                    {% if status.active %}
                        <span class="badge badge-green">● 运行中</span>
                    {% elif status.state == 'stopped' %}
                        <span class="badge badge-gray">● 已停止</span>
                    {% else %}
                        <span class="badge badge-orange">● {{ status.state }}</span>
                    {% endif %}
                </td>
            </tr>
            <tr><th>服务名</th><td><code>{{ cfg.squid_service if cfg is defined else 'squid' }}</code></td></tr>
            <tr><th>主进程 PID</th><td>{{ status.pid or '-' }}</td></tr>
            <tr><th>启动时间</th><td>{{ status.since or '-' }}</td></tr>
            <tr><th>Squid 版本</th><td>{{ status.version or '-' }}</td></tr>
            <tr><th>Unit 文件</th><td><code>{{ status.unit_file or '-' }}</code></td></tr>
            <tr><th>二进制可用</th><td>{% if status.binary_available %}<span class="badge badge-green">是</span>{% else %}<span class="badge badge-red">否</span> (无法执行 squid 命令){% endif %}</td></tr>
            </tbody>
        </table>
    </div>

    <div class="card">
        <h3 class="card-title">🎛️ 操作</h3>
        <p class="card-desc">以下操作会通过 systemctl 调用 squid 服务。reload 会优先尝试平滑重载，失败则回退到 restart。</p>
        <div class="btn-group-vertical">
            <button onclick="svc('start')" class="btn btn-primary">▶ 启动</button>
            <button onclick="showConfirm('stop')" class="btn btn-danger">⏹ 停止</button>
            <button onclick="showConfirm('restart')" class="btn btn-warning">🔄 重启</button>
            <button onclick="svc('reload')" class="btn btn-secondary">♻️ 平滑重载 (reload)</button>
        </div>
        <div id="svc-result" class="svc-result" style="display:none;"></div>
    </div>
</div>

<div class="card">
    <h3 class="card-title">📁 关键路径</h3>
    <table class="data-table">
        <thead><tr><th>项目</th><th>路径</th><th>操作</th></tr></thead>
        <tbody>
        <tr>
            <td>主配置文件</td>
            <td><code>{{ conf }}</code></td>
            <td><a href="{{ url_for('config_raw') }}" class="btn btn-small">编辑</a></td>
        </tr>
        <tr>
            <td>访问日志</td>
            <td><code>{{ access_log }}</code></td>
            <td><a href="{{ url_for('logs_view') }}" class="btn btn-small">查看</a></td>
        </tr>
        <tr>
            <td>缓存日志</td>
            <td><code>{{ cache_log }}</code></td>
            <td>-</td>
        </tr>
        </tbody>
    </table>
</div>

<!-- P0-5: confirm-modal for dangerous service operations -->
<div id="confirm-modal" class="modal" style="display:none;"
     data-token-start="{{ tokens.start }}"
     data-token-stop="{{ tokens.stop }}"
     data-token-restart="{{ tokens.restart }}"
     data-token-reload="{{ tokens.reload }}">
    <div class="modal-card">
        <h3 id="confirm-title">⚠️ 确认操作</h3>
        <p>这是一个危险操作。Squid 服务的所有连接会立即中断。</p>
        <p>请输入: <code id="confirm-phrase"></code> 来确认。</p>
        <input type="text" id="confirm-input" class="form-input" autocomplete="off">
        <input type="hidden" id="confirm-action" value="">
        <input type="hidden" id="confirm-token" value="">
        <div class="form-actions">
            <button class="btn btn-primary" onclick="submitConfirm()">确认执行</button>
            <button class="btn btn-secondary" onclick="hideConfirm()">取消</button>
        </div>
    </div>
</div>

{% endblock %}

{% block scripts %}
<script>
/* P0-5: read tokens from data-* attributes to avoid Jinja set scope limits */
const TOKENS = {
    start:  document.getElementById('confirm-modal').dataset.tokenStart,
    stop:   document.getElementById('confirm-modal').dataset.tokenStop,
    restart:document.getElementById('confirm-modal').dataset.tokenRestart,
    reload: document.getElementById('confirm-modal').dataset.tokenReload,
};
let locked = false;
function showConfirm(action) {
    if (locked) return;
    /* Phrase format: STOP-SQUID / RESTART-SQUID — see tests */
    const phrase = action.toUpperCase() + '-SQUID';
    document.getElementById('confirm-phrase').textContent = phrase;
    document.getElementById('confirm-action').value = action;
    document.getElementById('confirm-token').value = TOKENS[action];
    document.getElementById('confirm-input').value = '';
    document.getElementById('confirm-modal').style.display = 'flex';
    document.getElementById('confirm-input').focus();
}
function hideConfirm() {
    document.getElementById('confirm-modal').style.display = 'none';
}
function submitConfirm() {
    const action = document.getElementById('confirm-action').value;
    const token = document.getElementById('confirm-token').value;
    const phrase = action.toUpperCase() + '-SQUID';
    const input = document.getElementById('confirm-input').value.trim();
    if (input !== phrase) {
        alert('输入的确认码不正确');
        return;
    }
    hideConfirm();
    svc(action, token);
}
function svc(action, token) {
    if (locked) return;
    if (!confirm(`最后确认: 执行 ${action}?`)) return;
    locked = true;
    /* lock all buttons */
    document.querySelectorAll('.btn-group-vertical .btn').forEach(b => b.disabled = true);
    // show countdown
    const box = document.getElementById('svc-result');
    box.style.display = 'block';
    box.className = 'svc-result svc-loading';
    let countdown = 30;
    box.innerHTML = `执行中: ${action} ... 按钮锁定 ${countdown}s`;
    const t = setInterval(() => {
        countdown--;
        if (countdown > 0) {
            box.innerHTML = `执行中: ${action} ... 按钮锁定 ${countdown}s`;
        } else {
            clearInterval(t);
        }
    }, 1000);
    const form = new FormData();
    form.append('confirm_token', token || '');
    fetch(`/api/service/${action}`, { method: 'POST', body: form })
        .then(r => r.json())
        .then(d => {
            clearInterval(t);
            box.className = 'svc-result ' + (d.ok ? 'svc-ok' : 'svc-err');
            box.innerHTML = `<strong>${d.ok ? '✅ 成功' : '❌ 失败'}</strong> (耗时 ${d.elapsed || '?'}s)<br><pre>${d.message || ''}</pre>`;
            setTimeout(() => {
                locked = false;
                document.querySelectorAll('.btn-group-vertical .btn').forEach(b => b.disabled = false);
                location.reload();
            }, 2000);
        })
        .catch(e => {
            clearInterval(t);
            box.className = 'svc-result svc-err';
            box.textContent = '请求失败: ' + e;
            locked = false;
            document.querySelectorAll('.btn-group-vertical .btn').forEach(b => b.disabled = false);
        });
}
</script>
{% endblock %}