// 线圈参数管理

let editId = null;  // null=新增, number=编辑

// ─── Toast ───────────────────────────────────

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);
}

// ─── 列表加载 ────────────────────────────────

async function loadList() {
    const search = document.getElementById("search-input").value;
    try {
        const resp = await fetch(`/api/coil-info?search=${encodeURIComponent(search)}`);
        const data = await resp.json();
        renderTable(data);
    } catch (e) {
        console.error("加载失败:", e);
    }
}

function sizeLabel(item) {
    if (item.shape === '圆形') return `半径${item.radius || 0}cm`;
    if (item.shape === '矩形') return `${item.length || 0}×${item.width || 0}cm`;
    return '-';
}

function renderTable(data) {
    const tbody = document.querySelector("#coil-table tbody");
    if (!data.length) {
        tbody.innerHTML = '<tr><td colspan="10" style="color:#999;text-align:center;">暂无数据，点右上角「新增」添加</td></tr>';
        return;
    }
    tbody.innerHTML = data.map(t => `
        <tr>
            <td>${esc(t.coil_num)}</td>
            <td>${esc(t.name)}</td>
            <td>${t.induct || '-'}</td>
            <td>${t.shape || '-'}</td>
            <td>${sizeLabel(t)}</td>
            <td>${t.turns || '-'}</td>
            <td>${t.resistance || '-'}</td>
            <td>${esc(t.material || '-')}</td>
            <td>${esc(t.remark || '-')}</td>
            <td>
                <button class="btn-edit" onclick="openModal(${t.id})">编辑</button>
                <button class="btn-del" onclick="deleteRecord(${t.id}, '${esc(t.coil_num || t.name)}')">删除</button>
            </td>
        </tr>
    `).join("");
}

// ─── 弹窗 ────────────────────────────────────

function openModal(id = null) {
    editId = id;
    document.getElementById("modal-title").textContent = id ? "编辑线圈参数" : "新增线圈参数";
    document.getElementById("edit-modal").style.display = "flex";

    if (id) {
        fetch(`/api/coil-info/${id}`)
            .then(r => r.json())
            .then(data => {
                document.getElementById("edit-coil-num").value = data.coil_num || "";
                document.getElementById("edit-name").value = data.name || "";
                document.getElementById("edit-induct").value = data.induct || 0;
                document.getElementById("edit-shape").value = data.shape || "";
                document.getElementById("edit-length").value = data.length || 0;
                document.getElementById("edit-width").value = data.width || 0;
                document.getElementById("edit-radius").value = data.radius || 0;
                document.getElementById("edit-turns").value = data.turns || 0;
                document.getElementById("edit-resistance").value = data.resistance || 0;
                document.getElementById("edit-material").value = data.material || "";
                document.getElementById("edit-remark").value = data.remark || "";
            });
    } else {
        document.getElementById("edit-coil-num").value = "";
        document.getElementById("edit-name").value = "";
        document.getElementById("edit-induct").value = "0";
        document.getElementById("edit-shape").value = "";
        document.getElementById("edit-length").value = "0";
        document.getElementById("edit-width").value = "0";
        document.getElementById("edit-radius").value = "0";
        document.getElementById("edit-turns").value = "0";
        document.getElementById("edit-resistance").value = "0";
        document.getElementById("edit-material").value = "";
        document.getElementById("edit-remark").value = "";
    }
}

function closeModal() {
    document.getElementById("edit-modal").style.display = "none";
    editId = null;
}

// ─── 保存 ────────────────────────────────────

async function saveRecord() {
    const data = {
        coil_num: document.getElementById("edit-coil-num").value.trim(),
        name: document.getElementById("edit-name").value.trim(),
        induct: parseFloat(document.getElementById("edit-induct").value) || 0,
        shape: document.getElementById("edit-shape").value,
        length: parseFloat(document.getElementById("edit-length").value) || 0,
        width: parseFloat(document.getElementById("edit-width").value) || 0,
        radius: parseFloat(document.getElementById("edit-radius").value) || 0,
        turns: parseInt(document.getElementById("edit-turns").value) || 0,
        resistance: parseFloat(document.getElementById("edit-resistance").value) || 0,
        material: document.getElementById("edit-material").value.trim(),
        remark: document.getElementById("edit-remark").value.trim(),
    };

    if (!data.coil_num && !data.name) {
        toast("请输入线圈编号或名称", true);
        return;
    }

    try {
        let resp;
        if (editId) {
            resp = await fetch(`/api/coil-info/${editId}`, {
                method: "PUT",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify(data),
            });
        } else {
            resp = await fetch("/api/coil-info", {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify(data),
            });
        }
        const result = await resp.json();
        if (result.ok || resp.ok) {
            toast(editId ? "更新成功" : "新增成功");
            closeModal();
            loadList();
        } else {
            toast("保存失败: " + (result.error || "未知错误"), true);
        }
    } catch (e) {
        toast("保存失败: " + e.message, true);
    }
}

// ─── 删除 ────────────────────────────────────

async function deleteRecord(id, label) {
    if (!confirm(`确定要删除「${label}」吗？`)) return;

    try {
        const resp = await fetch(`/api/coil-info/${id}`, { method: "DELETE" });
        const result = await resp.json();
        if (result.ok) {
            toast("删除成功");
            loadList();
        } else {
            toast("删除失败: " + (result.error || "未知错误"), true);
        }
    } catch (e) {
        toast("删除失败: " + e.message, true);
    }
}

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

loadList();