// 设备列表页

async function loadDevices() {
    const resp = await fetch("/api/devices");
    const devices = await resp.json();
    renderTable(devices);
}

function renderTable(devices) {
    const tbody = document.querySelector("#device-table tbody");
    tbody.innerHTML = devices.map(d => {
        const stateLabel = getStateLabel(d.state);
        const stateClass = getStateClass(d.state);
        return `
        <tr>
            <td>${d.serial}</td>
            <td class="editable-name" onclick="editName(${d.id}, '${esc(d.name)}', this)">
                ${d.name || '(点击编辑)'}
            </td>
            <td>${d.ip || '-'}</td>
            <td class="${stateClass} status-cell" data-device-id="${d.id}">
                ${stateLabel}
            </td>
            <td>${d.version || '-'}</td>
            <td>${d.last_login || '-'}</td>
            <td>
                <button class="btn-test" onclick="location.href='/test/${d.id}'">测试</button>
                ${USER_ROLE === 'admin' ? `<button class="btn-config" onclick="location.href='/fixture/${d.id}'">配置</button>` : ''}
            </td>
        </tr>`;
    }).join("");
}

function getStateLabel(state) {
    return {0: '离线', 1: '在线', 2: '通信不良'}[state] || '未知';
}

function getStateClass(state) {
    return {0: 'status-offline', 1: 'status-online', 2: 'status-poor'}[state] || '';
}

// 异步刷新所有设备的在线状态
async function refreshDeviceStatuses() {
    const cells = document.querySelectorAll(".status-cell");
    for (const cell of cells) {
        const deviceId = cell.dataset.deviceId;
        if (!deviceId) continue;
        try {
            const resp = await fetch(`/api/devices/${deviceId}/status`);
            const data = await resp.json();
            if (data.ok) {
                cell.textContent = data.state_name;
                cell.className = getStateClass(data.state) + " status-cell";
                cell.dataset.deviceId = deviceId;
            }
        } catch (e) {
            // 网络错误静默跳过
        }
    }
}

function esc(s) { return s.replace(/'/g, "\\'").replace(/"/g, "&quot;"); }

async function editName(id, currentName, td) {
    const input = document.createElement("input");
    input.value = currentName;
    td.innerHTML = "";
    td.appendChild(input);
    input.focus();

    async function save() {
        const name = input.value.trim();
        td.textContent = name || "(点击编辑)";
        await fetch(`/api/devices/${id}/name`, {
            method: "PUT",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ name }),
        });
    }

    input.addEventListener("blur", save);
    input.addEventListener("keydown", e => { if (e.key === "Enter") save(); });
}

loadDevices();
// 每 5 秒异步刷新设备在线状态
setInterval(refreshDeviceStatuses, 5000);