// 工装配置页

// ─── 频率/峰峰值转换常量 ─────────────────────
// 协议: 工作频率 f(Hz) = 10 * X,  X 为 DB/设备中存储和传输的原始值
// 协议: 峰峰值 V = ((X * 3.3) / 4095) * 4,  X 为 DB/设备中存储和传输的原始值(正整数)
const FREQ_SCALE = 10;
const PEAK_SCALE = 4095 / (4 * 3.3);  // ≈ 310.227

function rawFreqToHz(x) { return x * FREQ_SCALE; }
function hzToRawFreq(hz) { return Math.round(hz / FREQ_SCALE); }
function rawPeakToV(x) { return parseFloat(((x * 3.3) / 4095 * 4).toFixed(2)); }
function vToRawPeak(v) { return Math.round(v * PEAK_SCALE); }

let baseTests = [];  // 所有车检器基准参数
let selectedBaseTest = null;
let pollTimer4C = null;   // 0x4C 参数查询轮询
let pollTimers = {};       // record_id → timer (指令响应轮询)

// ─── 初始化 ─────────────────────────────────

async function init() {
    await loadBaseTests();
    await loadCoilList();
    await loadCarList();
    await loadFixtureParam();
}

// ─── Toast 提示 ─────────────────────────────

function toast(msg, isError = false) {
    const el = document.getElementById("toast");
    el.textContent = msg;
    el.className = "msg-toast " + (isError ? "error" : "") + " show";
    clearTimeout(el._timeout);
    el._timeout = setTimeout(() => { el.className = "msg-toast"; }, 3000);
}

// ─── 通信日志 ───────────────────────────────

function commLog(type, hex, detail) {
    const el = document.getElementById("comm-log");
    if (el.querySelector('div') && el.querySelector('div').textContent === '等待操作…') {
        el.innerHTML = '';
    }
    const time = new Date().toLocaleTimeString();
    const colors = { send: '#4ec9b0', recv: '#ce9178', ok: '#6a9955', fail: '#f44747', info: '#888' };
    const labels = { send: '→ 发送', recv: '← 收到', ok: '✓ 成功', fail: '✗ 失败', info: '· 信息' };
    const color = colors[type] || '#888';
    const label = labels[type] || '';
    const html = `<div style="margin-bottom:3px;">
        <span style="color:#569cd6;">${time}</span>
        <span style="color:${color}; font-weight:600;"> ${label}</span>
        <span style="color:#aaa;"> ${detail || ''}</span>
        ${hex ? `<br><span style="color:#808080; padding-left:10px;">${hex}</span>` : ''}
    </div>`;
    el.insertAdjacentHTML('afterbegin', html);
}

// ─── 解析 Flag 响应 ──────────────────────────

const FLAG_CMDS = { '4B': '配置参数', '4D': '出厂初始化', '4E': '设备复位' };

function parseFlagResponse(rcvPkg, cmd) {
    // 格式: 7F8102{CMD}{FLAG}{XOR}{SUM} → FLAG 在位置 8-9
    if (!rcvPkg || rcvPkg.length < 10) return null;
    const flag = parseInt(rcvPkg.substring(8, 10), 16);
    return flag;
}

// ─── 加载车检器测试基准 ──────────────────────

async function loadBaseTests() {
    const search = document.getElementById("ref-search").value;
    try {
        const resp = await fetch(`/api/vehicle-base-test?search=${encodeURIComponent(search)}`);
        baseTests = await resp.json();
        renderBaseTestTable();
        populateDevTypeSelect();
    } catch (e) {
        console.error("加载基准参数失败:", e);
    }
}

function renderBaseTestTable() {
    const tbody = document.getElementById("ref-table-body");
    if (!baseTests.length) {
        tbody.innerHTML = '<tr><td colspan="5" style="color:#999;text-align:center;">暂无数据</td></tr>';
        return;
    }
    tbody.innerHTML = baseTests.map(t => `
        <tr onclick="selectBaseTest(${t.id})" data-id="${t.id}"
            class="${selectedBaseTest && selectedBaseTest.id === t.id ? 'selected' : ''}">
            <td>${t.type_num}</td>
            <td>${esc(t.dev_name)}</td>
            <td>${t.SensMin}~${t.SensMax}</td>
            <td>${rawFreqToHz(t.FreMin)}~${rawFreqToHz(t.FreMax)}</td>
            <td>${rawPeakToV(t.PeakMin)}~${rawPeakToV(t.PeakMax)}</td>
        </tr>
    `).join("");
}

function populateDevTypeSelect() {
    const sel = document.getElementById("param-dev-type");
    sel.innerHTML = '<option value="0">-- 请选择车检器基准 --</option>' +
        baseTests.map(t => `<option value="${t.type_num}">${t.type_num} - ${esc(t.dev_name)}</option>`).join("");
    if (selectedBaseTest) {
        sel.value = selectedBaseTest.type_num;
    }
}

function selectBaseTest(id) {
    selectedBaseTest = baseTests.find(t => t.id === id);
    if (!selectedBaseTest) return;
    fillFromBaseTest(selectedBaseTest);
    renderBaseTestTable();
}

function fillFromBaseTest(t) {
    document.getElementById("param-dev-type").value = t.type_num;
    document.getElementById("param-sens-min").value = t.SensMin;
    document.getElementById("param-sens-max").value = t.SensMax;
    document.getElementById("param-fre-min").value = rawFreqToHz(t.FreMin);
    document.getElementById("param-fre-max").value = rawFreqToHz(t.FreMax);
    document.getElementById("param-peak-min").value = rawPeakToV(t.PeakMin);
    document.getElementById("param-peak-max").value = rawPeakToV(t.PeakMax);
}

function onDevTypeChange() {
    const typeNum = parseInt(document.getElementById("param-dev-type").value);
    const matched = baseTests.find(t => t.type_num === typeNum);
    if (matched) selectBaseTest(matched.id);
    else { selectedBaseTest = null; renderBaseTestTable(); }
}

// ─── 线圈列表 ────────────────────────────────

let coilList = [];

async function loadCoilList() {
    try {
        const resp = await fetch("/api/coil-info");
        coilList = await resp.json();
        populateCoilSelect();
    } catch (e) { console.error("加载线圈列表失败:", e); }
}

function populateCoilSelect() {
    const sel = document.getElementById("coil-select");
    sel.innerHTML = '<option value="">-- 选择线圈 --</option>' +
        coilList.map(c => `<option value="${c.id}">${esc(c.coil_num || c.name || `#${c.id}`)}</option>`).join("");
}

function onCoilChange() {
    const id = parseInt(document.getElementById("coil-select").value);
    const coil = coilList.find(c => c.id === id);
    const detail = document.getElementById("coil-detail");
    if (coil) {
        const sizeText = coil.shape === '圆形' ? `半径${coil.radius}cm` : `${coil.length}×${coil.width}cm`;
        detail.innerHTML = `${coil.shape || '-'} / ${sizeText} / ${coil.turns || 0}圈 / ${coil.resistance || 0}Ω / ${coil.material || ''}`;
    } else {
        detail.innerHTML = '';
    }
}

// ─── 模拟车辆列表 ────────────────────────────

let carList = [];

async function loadCarList() {
    try {
        const resp = await fetch("/api/simulate-car");
        carList = await resp.json();
        populateCarSelect();
    } catch (e) { console.error("加载模拟车辆列表失败:", e); }
}

function populateCarSelect() {
    const sel = document.getElementById("car-select");
    sel.innerHTML = '<option value="">-- 选择模拟车辆 --</option>' +
        carList.map(c => `<option value="${c.id}">${esc(c.simulate_num || c.name || `#${c.id}`)}</option>`).join("");
}

function onCarChange() {
    const id = parseInt(document.getElementById("car-select").value);
    const car = carList.find(c => c.id === id);
    const detail = document.getElementById("car-detail");
    if (car) {
        const sizeText = car.shape === '圆形' ? `半径${car.radius}cm` : `${car.length}×${car.width}cm`;
        detail.innerHTML = `${car.shape || '-'} / ${sizeText} / ${car.material || ''}`;
    } else {
        detail.innerHTML = '';
    }
}

// ─── 从 DB 加载/刷新/保存 ────────────────────

async function loadFixtureParam() {
    try {
        const resp = await fetch(`/api/fixture/param/${DNT_ID}`);
        const param = await resp.json();
        if (param && param.dnt_id) {
            fillFormFromParam(param);
            commLog('info', null, '已从数据库加载工装参数');
        }
    } catch (e) { console.error("加载工装参数失败:", e); }
}

function fillFormFromParam(param) {
    document.getElementById("param-addr").value = param.Addr || 1;
    document.getElementById("param-test-mode").value = param.TestMode || 0;
    document.getElementById("param-reset-dis").value = (param.RestDis || 0) * 10;
    document.getElementById("param-minus-dis").value = (param.MinusDis || 0) * 10;
    document.getElementById("param-dev-type").value = param.DevType || 0;
    document.getElementById("param-sens-min").value = param.SensMin || 0;
    document.getElementById("param-sens-max").value = param.SensMax || 0;
    document.getElementById("param-fre-min").value = rawFreqToHz(param.FreMin || 0);
    document.getElementById("param-fre-max").value = rawFreqToHz(param.FreMax || 0);
    document.getElementById("param-peak-min").value = rawPeakToV(param.PeakMin || 0);
    document.getElementById("param-peak-max").value = rawPeakToV(param.PeakMax || 0);
    document.getElementById("param-far-tol").value = (param.FarTol || 0) * 10;
    document.getElementById("param-near-tol").value = (param.NearTol || 0) * 10;
    document.getElementById("param-step-tol").value = (param.StepTol || 0) * 10;
    document.getElementById("param-back-forth").value = param.BackForth || 0;
    document.getElementById("param-near-stay").value = param.NearStay || 0;
    document.getElementById("param-far-stay").value = param.FarStay || 0;
    const matched = baseTests.find(t => t.type_num === param.DevType);
    if (matched) { selectedBaseTest = matched; renderBaseTestTable(); }
    // 设置线圈和模拟车辆选中
    if (param.coil_id) {
        document.getElementById("coil-select").value = param.coil_id;
        onCoilChange();
    }
    if (param.simulate_car_id) {
        document.getElementById("car-select").value = param.simulate_car_id;
        onCarChange();
    }
    // 更新当前关联标签
    updateCurrentLabels(param);
}

async function refreshParams() {
    const param = await (await fetch(`/api/fixture/param/${DNT_ID}`)).json();
    if (param && param.dnt_id) {
        fillFormFromParam(param);
        commLog('info', null, '已刷新：从数据库加载工装参数');
        toast("已刷新");
    } else {
        toast("数据库中没有该工装的参数，请先查询(0x4C)或保存", true);
        commLog('info', null, '刷新失败：数据库中没有参数');
    }
}

async function saveToDb() {
    const data = getFormParams();
    const coilId = parseInt(document.getElementById("coil-select").value) || null;
    const carId = parseInt(document.getElementById("car-select").value) || null;
    const body = {
        Addr: data.addr, DevType: data.dev_type, TestMode: data.test_mode,
        RestDis: data.reset_dis, MinusDis: data.minus_dis,
        SensMin: data.sens_min, SensMax: data.sens_max,
        FreMin: data.fre_min, FreMax: data.fre_max,
        PeakMin: data.peak_min, PeakMax: data.peak_max,
        FarTol: data.far_tol, NearTol: data.near_tol,
        StepTol: data.step_tol, BackForth: data.back_forth,
        NearStay: data.near_stay, FarStay: data.far_stay,
    };
    if (coilId) body.coil_id = coilId;
    if (carId) body.simulate_car_id = carId;
    try {
        const resp = await fetch(`/api/fixture/param/${DNT_ID}`, {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify(body),
        });
        const result = await resp.json();
        if (result.ok) {
            commLog('info', null, '参数已保存到数据库');
            toast("已保存到数据库");
            updateCurrentLabels();
        } else {
            toast("保存失败: " + (result.error || ""), true);
        }
    } catch (e) { toast("保存失败: " + e.message, true); }
}

/** 更新页面上的当前线圈/车辆标签 */
function updateCurrentLabels(param) {
    const coilLabel = document.getElementById("current-coil-label");
    const carLabel = document.getElementById("current-car-label");
    if (param) {
        coilLabel.textContent = param.coil_name || param.coil_num || '未设置';
        carLabel.textContent = param.car_name || param.simulate_num || '未设置';
    } else {
        // 从 DOM 读取当前选择
        const coilId = parseInt(document.getElementById("coil-select").value);
        const carId = parseInt(document.getElementById("car-select").value);
        const coil = coilId ? coilList.find(c => c.id === coilId) : null;
        const car = carId ? carList.find(c => c.id === carId) : null;
        coilLabel.textContent = coil ? (coil.coil_num || coil.name) : '未设置';
        carLabel.textContent = car ? (car.simulate_num || car.name) : '未设置';
    }
}

function getFormParams() {
    return {
        addr: parseInt(document.getElementById("param-addr").value) || 1,
        dev_type: parseInt(document.getElementById("param-dev-type").value) || 0,
        test_mode: parseInt(document.getElementById("param-test-mode").value) || 0,
        reset_dis: Math.round((parseInt(document.getElementById("param-reset-dis").value) || 0) / 10),
        minus_dis: Math.round((parseInt(document.getElementById("param-minus-dis").value) || 0) / 10),
        sens_min: parseInt(document.getElementById("param-sens-min").value) || 0,
        sens_max: parseInt(document.getElementById("param-sens-max").value) || 0,
        fre_min: hzToRawFreq(parseFloat(document.getElementById("param-fre-min").value) || 0),
        fre_max: hzToRawFreq(parseFloat(document.getElementById("param-fre-max").value) || 0),
        peak_min: vToRawPeak(parseFloat(document.getElementById("param-peak-min").value) || 0),
        peak_max: vToRawPeak(parseFloat(document.getElementById("param-peak-max").value) || 0),
        far_tol: Math.round((parseInt(document.getElementById("param-far-tol").value) || 0) / 10),
        near_tol: Math.round((parseInt(document.getElementById("param-near-tol").value) || 0) / 10),
        step_tol: Math.round((parseInt(document.getElementById("param-step-tol").value) || 0) / 10),
        back_forth: parseInt(document.getElementById("param-back-forth").value) || 0,
        near_stay: parseInt(document.getElementById("param-near-stay").value) || 0,
        far_stay: parseInt(document.getElementById("param-far-stay").value) || 0,
    };
}

// ─── 轮询 serialnet 响应（通用）─────────────

function startRespPolling(recordId, cmd) {
    stopRespPolling(recordId);
    let attempts = 0;

    pollTimers[recordId] = setInterval(async () => {
        attempts++;
        try {
            const resp = await fetch(`/api/fixture/serialnet/${recordId}`);
            const rec = await resp.json();

            if (rec.state === 2) {
                // 已完成
                stopRespPolling(recordId);
                const rcvPkg = rec.rcv_pkg || '';
                if (rcvPkg) {
                    commLog('recv', rcvPkg, '');
                    // 解析 Flag（0x4B/0x4D/0x4E）
                    if (cmd in FLAG_CMDS) {
                        const flag = parseFlagResponse(rcvPkg, cmd);
                        if (flag === 0) {
                            commLog('ok', null, `${FLAG_CMDS[cmd]} 成功`);
                            toast(`${FLAG_CMDS[cmd]} 成功`);
                        } else {
                            commLog('fail', null, `${FLAG_CMDS[cmd]} 失败 (Flag=${flag})`);
                            toast(`${FLAG_CMDS[cmd]} 失败`, true);
                        }
                    } else {
                        commLog('ok', null, `指令 0x${cmd} 已完成`);
                        toast(`指令 0x${cmd} 已完成`);
                    }

                    // 0x4C 返回后刷新参数
                    if (cmd === '4C') {
                        // 参数已在后端 upsert，直接从 DB 加载
                        setTimeout(async () => {
                            const p = await (await fetch(`/api/fixture/param/${DNT_ID}`)).json();
                            if (p && p.dnt_id) fillFormFromParam(p);
                        }, 500);
                    }
                } else {
                    commLog('info', null, `指令 0x${cmd} 已完成（无返回数据）`);
                }
            } else if (rec.state === 3) {
                // 超时
                stopRespPolling(recordId);
                commLog('fail', null, `指令 0x${cmd} 超时（设备无响应）`);
                toast(`指令 0x${cmd} 超时`, true);
            }
            // state=0/1 → 继续等待
        } catch (e) {
            // 忽略网络错误
        }
        if (attempts >= 4) {
            stopRespPolling(recordId);
            commLog('fail', null, `指令 0x${cmd} 轮询超时（4秒无响应）`);
        }
    }, 1000);
}

function stopRespPolling(recordId) {
    if (pollTimers[recordId]) {
        clearInterval(pollTimers[recordId]);
        delete pollTimers[recordId];
    }
}

// ─── 发送工装指令（通用）────────────────────

async function sendFixtureCmd(cmd) {
    try {
        const resp = await fetch("/api/fixture/command", {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ dnt_id: DNT_ID, cmd }),
        });
        const data = await resp.json();
        if (data.ok) {
            commLog('send', data.send_pkg, `${cmdName(cmd)} (0x${cmd})`);
            toast(`指令 0x${cmd} 已下发`);
            startRespPolling(data.record_id, cmd);
        } else {
            commLog('fail', null, `指令 0x${cmd} 发送失败: ${data.error}`);
            toast(`失败: ${data.error}`, true);
        }
    } catch (e) {
        commLog('fail', null, `发送 0x${cmd} 异常: ${e.message}`);
        toast("发送失败: " + e.message, true);
    }
}

// ─── 发送配置指令 0x4B ───────────────────────

async function sendConfig() {
    const params = getFormParams();
    try {
        const resp = await fetch("/api/fixture/command", {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ dnt_id: DNT_ID, cmd: "4B", params }),
        });
        const data = await resp.json();
        if (data.ok) {
            commLog('send', data.send_pkg, `配置参数 (0x4B)`);
            toast("配置指令 0x4B 已下发");
            startRespPolling(data.record_id, "4B");

            // 同时保存到数据库
            const coilId = parseInt(document.getElementById("coil-select").value) || null;
            const carId = parseInt(document.getElementById("car-select").value) || null;
            const saveBody = {
                Addr: params.addr, DevType: params.dev_type, TestMode: params.test_mode,
                RestDis: params.reset_dis, MinusDis: params.minus_dis,
                SensMin: params.sens_min, SensMax: params.sens_max,
                FreMin: params.fre_min, FreMax: params.fre_max,
                PeakMin: params.peak_min, PeakMax: params.peak_max,
                FarTol: params.far_tol, NearTol: params.near_tol,
                StepTol: params.step_tol, BackForth: params.back_forth,
                NearStay: params.near_stay, FarStay: params.far_stay,
            };
            if (coilId) saveBody.coil_id = coilId;
            if (carId) saveBody.simulate_car_id = carId;
            await fetch(`/api/fixture/param/${DNT_ID}`, {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify(saveBody),
            });
        } else {
            toast(`失败: ${data.error}`, true);
        }
    } catch (e) {
        toast("配置失败: " + e.message, true);
    }
}

function cmdName(cmd) {
    const names = { '4A': '获取版本号', '4B': '配置参数', '4C': '查询参数', '4D': '出厂初始化', '4E': '设备复位' };
    return names[cmd] || cmd;
}

function esc(s) { return (s || "").replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;"); }

init();