/* 无人机资产管理系统 — 前端逻辑（原生 JS，无依赖） */
"use strict";

const API = "";

// 动态状态定义（由 /api/status-types 加载）
let statusTypes = [];           // [{name, color, is_builtin}]
let statusMap = {};             // name -> color

async function loadStatusTypes() {
  statusTypes = await api("/api/status-types");
  statusMap = {};
  for (const s of statusTypes) statusMap[s.name] = s.color;
  fillStatusFilter();
}

function fillStatusFilter() {
  const opts = `<option value="">全部状态</option>` +
    statusTypes.map((s) => `<option value="${esc(s.name)}">${esc(s.name)}</option>`).join("") +
    `<option value="__none__">无状态</option>`;
  const sel = document.getElementById("status-filter");
  if (sel) sel.innerHTML = opts;
  const selM = document.getElementById("matrix-status");
  if (selM) selM.innerHTML = opts;
}

function badgeColor(status) {
  return statusMap[status] || "#9e9e9e";
}

// ---------------------------------------------------------------- 工具
async function api(path, options = {}) {
  const resp = await fetch(API + path, {
    headers: { "Content-Type": "application/json; charset=utf-8" },
    ...options,
  });
  if (resp.status === 204) return null;
  const data = await resp.json().catch(() => null);
  if (!resp.ok) {
    const msg = (data && data.detail) || `请求失败 (${resp.status})`;
    throw new Error(msg);
  }
  return data;
}

function esc(s) {
  return String(s ?? "").replace(/[&<>"']/g, (c) => ({
    "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;",
  }[c]));
}

function badge(status) {
  if (!status) return `<span class="badge empty">无状态</span>`;
  return `<span class="badge" style="background:${esc(badgeColor(status))}">${esc(status)}</span>`;
}

function toast(msg, isError = false) {
  let el = document.querySelector(".toast");
  if (!el) {
    el = document.createElement("div");
    el.className = "toast";
    document.body.appendChild(el);
  }
  el.textContent = msg;
  el.classList.toggle("error", isError);
  el.classList.add("show");
  clearTimeout(el._t);
  el._t = setTimeout(() => el.classList.remove("show"), 2600);
}

// 弹窗管理：一个容器反复复用
function openModal(title, bodyHTML, footerHTML = "") {
  const mask = document.getElementById("modal");
  mask.innerHTML = `
    <div class="modal">
      <div class="modal-header">
        <h2>${esc(title)}</h2>
        <button class="modal-close" onclick="closeModal()">&times;</button>
      </div>
      <div class="modal-body">${bodyHTML}</div>
      ${footerHTML ? `<div class="modal-footer">${footerHTML}</div>` : ""}
    </div>`;
  mask.classList.add("open");
}
function closeModal() {
  document.getElementById("modal").classList.remove("open");
}
document.addEventListener("click", (e) => {
  if (e.target.id === "modal") closeModal();
});

// ---------------------------------------------------------------- Tab
function switchTab(name) {
  document.querySelectorAll(".tab").forEach((b) =>
    b.classList.toggle("active", b.dataset.tab === name)
  );
  document.querySelectorAll("main.view").forEach((v) =>
    v.classList.toggle("active", v.id === "view-" + name)
  );
  if (name === "matrix") renderMatrix();
  if (name === "flight") renderFlightMatrix();
}

// ---------------------------------------------------------------- 无人机列表
let currentModelFilter = "";

function buildDronesQuery() {
  const p = [];
  const m = document.getElementById("model-filter").value;
  const s = document.getElementById("serial-filter").value.trim();
  const f = document.getElementById("fc-filter").value.trim();
  const st = document.getElementById("status-filter").value;
  if (m) p.push("model=" + encodeURIComponent(m));
  if (s) p.push("serial_no=" + encodeURIComponent(s));
  if (f) p.push("fc_id=" + encodeURIComponent(f));
  if (st) p.push("status=" + encodeURIComponent(st));
  return p.length ? "?" + p.join("&") : "";
}

function resetDronesFilter() {
  document.getElementById("model-filter").value = "";
  document.getElementById("serial-filter").value = "";
  document.getElementById("fc-filter").value = "";
  document.getElementById("status-filter").value = "";
  currentModelFilter = "";
  loadDrones();
}
let dronesCache = [];

let globalModels = [];

async function loadModels() {
  const models = await api("/api/drones/models");
  globalModels = models;
  const sel = document.getElementById("model-filter");
  sel.innerHTML = `<option value="">全部机型</option>` +
    models.map((m) => `<option value="${esc(m)}">${esc(m)}</option>`).join("");
  const selM = document.getElementById("matrix-model");
  selM.innerHTML = models.map((m) => `<option value="${esc(m)}">${esc(m)}</option>`).join("");
  const selF = document.getElementById("flight-model");
  selF.innerHTML = models.map((m) => `<option value="${esc(m)}">${esc(m)}</option>`).join("");
}

async function loadDrones() {
  currentModelFilter = document.getElementById("model-filter").value;
  dronesCache = await api("/api/drones" + buildDronesQuery());
  renderDrones();
}

function renderDrones() {
  const wrap = document.getElementById("drones-body");
  if (!dronesCache.length) {
    wrap.innerHTML = `<div class="empty-tip">暂无无人机，点击右上角「新增无人机」添加</div>`;
    return;
  }
  wrap.innerHTML = "";
  const table = document.createElement("table");
  table.innerHTML = `
    <thead><tr>
      <th style="width:34px"><input type="checkbox" id="check-all" title="全选/取消全选"></th>
      <th>机型</th><th>编号</th><th>当前状态</th><th>操作</th>
      <th>飞控ID</th><th>链路ID</th><th>飞控版本</th><th>导航版本</th><th>备注</th>
    </tr></thead><tbody></tbody>`;
  const tbodyEl = table.querySelector("tbody");
  for (const d of dronesCache) {
    const tr = document.createElement("tr");
    const st = d.current_status ? d.current_status.status : "";
    const lastRemark = d.current_status ? d.current_status.remark : "";
    tr.innerHTML = `
      <td><input type="checkbox" class="drone-check" value="${d.id}"></td>
      <td>${esc(d.model)}</td>
      <td><strong>${esc(d.serial_no)}</strong></td>
      <td>${badge(st)}${lastRemark ? `<div style="font-size:12px;color:#7a8699;margin-top:2px">${esc(lastRemark)}</div>` : ""}</td>
      <td><div class="actions">
        <button class="small" onclick="showHistory(${d.id})">历史</button>
        <button class="small" onclick="openFlightModal(${d.id})">飞行</button>
        <button class="small primary" onclick="openStatusModal(${d.id})">修改状态</button>
        <button class="small" onclick="openEditModal(${d.id})">编辑</button>
        <button class="small danger" onclick="confirmDelete(${d.id})">删除</button>
      </div></td>
      <td>${esc(d.fc_id)}</td>
      <td>${esc(d.link_id)}</td>
      <td>${esc(d.fc_version)}</td>
      <td>${esc(d.nav_version)}</td>
      <td class="remark-cell">${esc(d.remark)}</td>`;
    tbodyEl.appendChild(tr);
  }
  wrap.innerHTML = "";
  wrap.appendChild(table);
  const ca = document.getElementById("check-all");
  if (ca) {
    ca.onchange = () => {
      document.querySelectorAll(".drone-check").forEach((c) => (c.checked = ca.checked));
    };
  }
}

// ---------------------------------------------------------------- 新增 / 编辑
function openCreateModal() {
  openModal(
    "新增无人机",
    `
    <div class="form-row"><label>机型 *</label><input id="f-model" type="text" placeholder="如 DJI Mavic 3"></div>
    <div class="form-row"><label>编号 *</label><input id="f-serial" type="text" placeholder="唯一编号，如 UAV-001"></div>
    <div class="form-row"><label>链路ID</label><input id="f-link" type="text"></div>
    <div class="form-row"><label>飞控ID</label><input id="f-fc" type="text"></div>
    <div class="form-row"><label>飞控版本号</label><input id="f-fcv" type="text"></div>
    <div class="form-row"><label>导航版本号</label><input id="f-nav" type="text"></div>
    <div class="form-row"><label>备注</label><textarea id="f-remark"></textarea></div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitCreate()">保存</button>`
  );
}

async function submitCreate() {
  const body = {
    model: document.getElementById("f-model").value,
    serial_no: document.getElementById("f-serial").value,
    link_id: document.getElementById("f-link").value,
    fc_id: document.getElementById("f-fc").value,
    fc_version: document.getElementById("f-fcv").value,
    nav_version: document.getElementById("f-nav").value,
    remark: document.getElementById("f-remark").value,
  };
  if (!body.model.trim() || !body.serial_no.trim()) return toast("机型与编号不能为空", true);
  try {
    await api("/api/drones", { method: "POST", body: JSON.stringify(body) });
    closeModal();
    toast("新增成功");
    await Promise.all([loadModels(), loadDrones()]);
  } catch (e) { toast(e.message, true); }
}

function openEditModal(id) {
  const d = dronesCache.find((x) => x.id === id);
  if (!d) return;
  openModal(
    `编辑无人机 ${d.serial_no}`,
    `
    <div class="form-row"><label>机型</label><input id="f-model" type="text" value="${esc(d.model)}"></div>
    <div class="form-row"><label>链路ID</label><input id="f-link" type="text" value="${esc(d.link_id)}"></div>
    <div class="form-row"><label>飞控ID</label><input id="f-fc" type="text" value="${esc(d.fc_id)}"></div>
    <div class="form-row"><label>飞控版本号</label><input id="f-fcv" type="text" value="${esc(d.fc_version)}"></div>
    <div class="form-row"><label>导航版本号</label><input id="f-nav" type="text" value="${esc(d.nav_version)}"></div>
    <div class="form-row"><label>备注</label><textarea id="f-remark">${esc(d.remark)}</textarea></div>
    <div style="font-size:12px;color:#7a8699">编号为唯一标识，新增时设定，此处不可修改。</div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitEdit(${id})">保存</button>`
  );
}

async function submitEdit(id) {
  const body = {
    model: document.getElementById("f-model").value,
    link_id: document.getElementById("f-link").value,
    fc_id: document.getElementById("f-fc").value,
    fc_version: document.getElementById("f-fcv").value,
    nav_version: document.getElementById("f-nav").value,
    remark: document.getElementById("f-remark").value,
  };
  try {
    await api(`/api/drones/${id}`, { method: "PUT", body: JSON.stringify(body) });
    closeModal();
    toast("已保存");
    await Promise.all([loadModels(), loadDrones()]);
  } catch (e) { toast(e.message, true); }
}

function confirmDelete(id) {
  const d = dronesCache.find((x) => x.id === id);
  if (!d) return;
  openModal(
    "删除确认",
    `<p style="font-size:14px">确定删除编号 <strong>${esc(d.serial_no)}</strong> 的无人机吗？<br>
     其全部状态变更记录将一并删除，此操作不可恢复。</p>`,
    `<button onclick="closeModal()">取消</button><button class="primary danger" onclick="doDelete(${id})">删除</button>`
  );
}

async function doDelete(id) {
  try {
    await api(`/api/drones/${id}`, { method: "DELETE" });
    closeModal();
    toast("已删除");
    await Promise.all([loadModels(), loadDrones()]);
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 修改状态
function openStatusModal(id) {
  const d = dronesCache.find((x) => x.id === id);
  if (!d) return;
  const cur = d.current_status ? d.current_status.status : "";
  openModal(
    `修改状态 — ${d.serial_no}`,
    `
    <div class="form-row"><label>当前状态</label><div>${badge(cur)}</div></div>
    <div class="form-row"><label>新状态 *</label>
      <select id="s-status">
        ${statusTypes.map((s) => `<option value="${esc(s.name)}" ${s.name === cur ? "selected" : ""}>${esc(s.name)}</option>`).join("")}
      </select>
    </div>
    <div class="form-row"><label>变更日期时间（可改，用于补充历史记录）</label>
      <input type="datetime-local" id="s-time" value="${nowLocal()}">
      <div style="font-size:12px;color:#7a8699;margin-top:4px">默认当前时间；如需补充补录某天的状态，改成对应日期时间即可。</div>
    </div>
    <div class="form-row"><label>本次备注（可选）</label><textarea id="s-remark" placeholder="如：检修完成、入库等"></textarea></div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitStatus(${id})">提交</button>`
  );
}

async function submitStatus(id) {
  const body = {
    status: document.getElementById("s-status").value,
    remark: document.getElementById("s-remark").value,
  };
  const t = document.getElementById("s-time").value;
  if (t) body.changed_at = t.replace("T", " ") + ":00";
  try {
    await api(`/api/drones/${id}/status`, { method: "POST", body: JSON.stringify(body) });
    closeModal();
    toast("状态已更新");
    await loadDrones();
  } catch (e) { toast(e.message, true); }
}

function nowLocal() {
  const d = new Date();
  const p = (n) => String(n).padStart(2, "0");
  return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())}T${p(d.getHours())}:${p(d.getMinutes())}`;
}

// ---------------------------------------------------------------- 批量修改状态
function getSelectedDroneIds() {
  return Array.from(document.querySelectorAll(".drone-check:checked")).map((c) => parseInt(c.value, 10));
}

function openBatchStatusModal() {
  const ids = getSelectedDroneIds();
  if (!ids.length) return toast("请先勾选需要修改状态的无人机", true);
  const opts = statusTypes.map((s) => `<option value="${esc(s.name)}">${esc(s.name)}</option>`).join("");
  openModal(
    `批量修改状态（${ids.length} 架）`,
    `
    <div class="form-row"><label>新状态 *</label><select id="bs-status">${opts}</select></div>
    <div class="form-row"><label>变更日期时间（可改，用于补充历史记录）</label>
      <input type="datetime-local" id="bs-time" value="${nowLocal()}">
      <div style="font-size:12px;color:#7a8699;margin-top:4px">默认当前时间；如需批量补录历史，改为对应日期时间即可。</div>
    </div>
    <div class="form-row"><label>本次备注（可选，写入每一架的记录）</label>
      <textarea id="bs-remark" placeholder="统一备注，如：批量入库"></textarea>
    </div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitBatchStatus()">提交</button>`
  );
}

async function submitBatchStatus() {
  const ids = getSelectedDroneIds();
  const body = {
    ids,
    status: document.getElementById("bs-status").value,
    remark: document.getElementById("bs-remark").value,
  };
  const t = document.getElementById("bs-time").value;
  if (t) body.changed_at = t.replace("T", " ") + ":00";
  try {
    const r = await api("/api/drones/status/batch", { method: "POST", body: JSON.stringify(body) });
    closeModal();
    toast(`已更新 ${r.updated.length} 架` + (r.missing.length ? `，${r.missing.length} 架未找到` : ""));
    await loadDrones();
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 批量修改飞行
function openBatchEditFlightModal() {
  const ids = getSelectedDroneIds();
  if (!ids.length) return toast("请先勾选需要修改飞行记录的无人机", true);
  openModal(
    `批量修改飞行（${ids.length} 架）`,
    `
    <div style="font-size:13px;color:#7a8699;margin-bottom:10px">
      按日期统一修改这些飞机「该日期」的飞行记录；留空的字段不修改。
    </div>
    <div class="form-row"><label>飞行日期 *</label><input id="bef-date" type="date"></div>
    <div class="form-row"><label>飞行时长（分钟，留空不改）</label><input id="bef-dur" type="number" min="0" placeholder="如：60"></div>
    <div class="form-row"><label>起飞地点（留空不改）</label><input id="bef-takeoff" type="text" placeholder="如：场A"></div>
    <div class="form-row"><label>降落地点（留空不改）</label><input id="bef-landing" type="text" placeholder="如：场B"></div>
    <div class="form-row"><label>备注（留空不改）</label><input id="bef-remark" type="text" placeholder="如：批量调整"></div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitBatchEditFlight()">提交</button>`
  );
}

async function submitBatchEditFlight() {
  const ids = getSelectedDroneIds();
  const date = document.getElementById("bef-date").value;
  if (!date) return toast("请选择飞行日期", true);
  const dur = document.getElementById("bef-dur").value;
  const takeoff = document.getElementById("bef-takeoff").value;
  const landing = document.getElementById("bef-landing").value;
  const remark = document.getElementById("bef-remark").value;
  const body = { ids, flight_date: date };
  if (dur !== "") body.duration_min = parseInt(dur, 10);
  if (takeoff !== "") body.takeoff = takeoff;
  if (landing !== "") body.landing = landing;
  if (remark !== "") body.remark = remark;
  if (!("duration_min" in body) && !("takeoff" in body) && !("landing" in body) && !("remark" in body)) {
    return toast("请至少填写一个要修改的字段", true);
  }
  try {
    const r = await api("/api/flights/batch-update", { method: "POST", body: JSON.stringify(body) });
    closeModal();
    toast(`已修改 ${r.updated_records} 条飞行记录`);
    await loadDrones();
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 批量删除
function openBatchDeleteModal() {
  const ids = getSelectedDroneIds();
  if (!ids.length) return toast("请先勾选需要操作的无人机", true);
  openModal(
    `批量删除（${ids.length} 架）`,
    `
    <div class="form-row"><label>删除方式</label>
      <select id="bd-mode" onchange="toggleBdDate()">
        <option value="flights-all">删除这些飞机的全部飞行记录</option>
        <option value="flights-date">删除这些飞机指定日期的飞行记录</option>
        <option value="drones">删除整架无人机（含状态与飞行记录）</option>
      </select>
    </div>
    <div class="form-row" id="bd-date-row" style="display:none">
      <label>飞行日期 *</label><input id="bd-date" type="date">
    </div>
    <div style="font-size:13px;color:#dc2626;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:10px">
      警告：删除操作不可恢复！整机删除会连同其状态历史与飞行记录一并删除。
    </div>`,
    `<button onclick="closeModal()">取消</button><button class="primary danger" onclick="submitBatchDelete()">确认删除</button>`
  );
}

function toggleBdDate() {
  const mode = document.getElementById("bd-mode").value;
  document.getElementById("bd-date-row").style.display = mode === "flights-date" ? "block" : "none";
}

async function submitBatchDelete() {
  const ids = getSelectedDroneIds();
  const mode = document.getElementById("bd-mode").value;
  if (!confirm("确认执行批量删除？此操作不可恢复！")) return;
  try {
    if (mode === "drones") {
      const r = await api("/api/drones/batch-delete", { method: "POST", body: JSON.stringify({ ids }) });
      closeModal();
      toast(`已删除 ${r.deleted.length} 架` + (r.not_found.length ? `，${r.not_found.length} 架未找到` : ""));
      await Promise.all([loadModels(), loadDrones(), loadStatusTypes()]);
    } else {
      const body = { ids, mode: mode === "flights-date" ? "date" : "all" };
      if (mode === "flights-date") {
        const date = document.getElementById("bd-date").value;
        if (!date) return toast("请选择飞行日期", true);
        body.flight_date = date;
      }
      const r = await api("/api/flights/batch-delete", { method: "POST", body: JSON.stringify(body) });
      closeModal();
      toast(`已删除 ${r.deleted_records} 条飞行记录`);
      await loadDrones();
    }
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 状态管理
async function openStatusManager() {
  await loadStatusTypes();
  const rows = statusTypes.map((s) => `
    <div class="sm-row" style="display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid #eef1f5">
      <input type="color" data-action="color" data-name="${esc(s.name)}" value="${esc(s.color)}"
             style="width:34px;height:26px;border:none;padding:0;cursor:pointer" title="点击修改颜色">
      <span class="badge" style="background:${esc(s.color)}">${esc(s.name)}</span>
      ${s.is_builtin
        ? '<span style="font-size:12px;color:#7a8699">内置</span>'
        : `<button class="small" data-action="rename" data-name="${esc(s.name)}">改名</button>
           <button class="small danger" data-action="delete" data-name="${esc(s.name)}">删除</button>`}
    </div>`).join("");
  openModal(
    "状态管理",
    `
    <div style="margin-bottom:14px;font-size:13px;color:#7a8699">
      状态用于「修改状态」下拉及透视表/历史展示；点击颜色块可修改颜色，内置状态不可删除，已被记录使用的状态不可删除。
    </div>
    <div class="sm-list" style="max-height:300px;overflow-y:auto">${rows || '<div class="empty-tip">暂无状态</div>'}</div>
    <div style="margin-top:16px;border-top:1px solid #eef1f5;padding-top:14px">
      <div class="form-row" style="margin-bottom:0">
        <label>新增自定义状态</label>
        <div style="display:flex;gap:10px;align-items:center">
          <input id="sm-name" type="text" placeholder="状态名称，如：巡检中" style="flex:1">
          <input id="sm-color" type="color" value="#3b82f6" style="width:44px;height:32px;border:none;padding:0;cursor:pointer">
          <button class="primary" onclick="createStatus()">添加</button>
        </div>
      </div>
    </div>`,
    `<button class="primary" onclick="closeModal()">关闭</button>`
  );
  // 颜色修改
  document.querySelectorAll("#modal input[data-action=color]").forEach((inp) => {
    inp.addEventListener("change", async () => {
      try {
        await api(`/api/status-types/${encodeURIComponent(inp.dataset.name)}`, {
          method: "PUT", body: JSON.stringify({ color: inp.value }),
        });
        toast("颜色已更新");
        await loadStatusTypes(); await loadDrones(); openStatusManager();
      } catch (e) { toast(e.message, true); }
    });
  });
  // 改名 / 删除
  document.querySelectorAll("#modal [data-action=rename], #modal [data-action=delete]").forEach((btn) => {
    btn.addEventListener("click", async () => {
      const name = btn.dataset.name;
      try {
        if (btn.dataset.action === "rename") {
          const newName = prompt(`将状态「${name}」改名为：`, name);
          if (newName === null) return;
          if (!newName.trim()) return toast("名称不能为空", true);
          await api(`/api/status-types/${encodeURIComponent(name)}`, {
            method: "PUT", body: JSON.stringify({ name: newName.trim() }),
          });
          toast("已改名");
        } else {
          if (!confirm(`确定删除状态「${name}」吗？`)) return;
          await api(`/api/status-types/${encodeURIComponent(name)}`, { method: "DELETE" });
          toast("已删除");
        }
        await loadStatusTypes(); await loadDrones(); openStatusManager();
      } catch (e) { toast(e.message, true); }
    });
  });
}

async function createStatus() {
  const name = document.getElementById("sm-name").value;
  const color = document.getElementById("sm-color").value;
  if (!name.trim()) return toast("请输入状态名称", true);
  try {
    await api("/api/status-types", { method: "POST", body: JSON.stringify({ name, color }) });
    toast("状态已添加");
    await loadStatusTypes(); await loadDrones(); openStatusManager();
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 历史
async function showHistory(id) {
  const data = await api(`/api/drones/${id}/history`);
  const d = data.drone;
  const items = data.history.length
    ? data.history.map((h) => `
      <div class="tl-item">
        <span class="dot" style="background:${badgeColor(h.status)}"></span>
        <div class="tl-time">${esc(h.changed_at)}</div>
        <div style="flex:1">
          <span class="badge" style="background:${esc(badgeColor(h.status))}">${esc(h.status)}</span>
          ${h.remark ? `<div class="tl-remark">${esc(h.remark)}</div>` : ""}
        </div>
        <button class="small" data-action="edit-status" data-id="${h.id}">编辑</button>
        <button class="small danger" data-action="del-status" data-id="${h.id}">删除</button>
      </div>`).join("")
    : `<div class="empty-tip">暂无状态变更记录</div>`;
  openModal(
    `状态历史 — ${d.serial_no}（${esc(d.model)}）`,
    `<div class="timeline">${items}</div>`,
    `<button class="primary" onclick="closeModal()">关闭</button>`
  );
  document.querySelectorAll("#modal [data-action=del-status]").forEach((btn) => {
    btn.addEventListener("click", async () => {
      if (!confirm("确定删除这条状态记录吗？删除后当前状态取剩余最新一条。")) return;
      try {
        await api(`/api/drones/${id}/history/${btn.dataset.id}`, { method: "DELETE" });
        toast("已删除");
        await loadDrones();
        showHistory(id);
      } catch (e) { toast(e.message, true); }
    });
  });
  document.querySelectorAll("#modal [data-action=edit-status]").forEach((btn) => {
    btn.addEventListener("click", () => {
      const rec = data.history.find((x) => x.id === parseInt(btn.dataset.id, 10));
      if (rec) openEditStatusModal(id, rec);
    });
  });
}

function toLocalInput(iso) {
  return iso ? iso.slice(0, 16) : "";
}

function openEditStatusModal(id, rec) {
  const opts = statusTypes.map((s) =>
    `<option value="${esc(s.name)}" ${s.name === rec.status ? "selected" : ""}>${esc(s.name)}</option>`
  ).join("");
  const d = dronesCache.find((x) => x.id === id);
  openModal(
    `编辑状态记录 — ${d ? d.serial_no : id}`,
    `
    <div class="form-row"><label>状态 *</label><select id="es-status">${opts}</select></div>
    <div class="form-row"><label>变更日期时间</label>
      <input type="datetime-local" id="es-time" value="${toLocalInput(rec.changed_at)}">
    </div>
    <div class="form-row"><label>备注</label><input id="es-remark" type="text" value="${esc(rec.remark)}"></div>`,
    `<button onclick="showHistory(${id})">返回</button><button class="primary" onclick="saveStatusRecord(${id}, ${rec.id})">保存</button>`
  );
}

async function saveStatusRecord(id, recordId) {
  const body = {
    status: document.getElementById("es-status").value,
    remark: document.getElementById("es-remark").value,
  };
  const t = document.getElementById("es-time").value;
  if (t) body.changed_at = t.replace("T", " ") + ":00";
  try {
    await api(`/api/drones/${id}/history/${recordId}`, { method: "PUT", body: JSON.stringify(body) });
    toast("已保存");
    await loadDrones();
    showHistory(id);
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- Excel 导出
function openExportModal() {
  const items = globalModels.length
    ? globalModels.map((m) => `
      <label style="display:flex;align-items:center;gap:8px;padding:6px 4px;cursor:pointer">
        <input type="checkbox" class="ex-model" value="${esc(m)}"> <span>${esc(m)}</span>
      </label>`).join("")
    : `<div class="empty-tip">暂无机型，请先添加无人机</div>`;
  openModal(
    "导出 Excel",
    `
    <div style="margin-bottom:10px;font-size:13px;color:#7a8699">
      <div style="margin-bottom:6px">
        选择机型（不勾选则导出全部）：
        <a href="javascript:void(0)" onclick="toggleExModels(true)" style="margin-left:10px">全选</a>
        <a href="javascript:void(0)" onclick="toggleExModels(false)" style="margin-left:8px">清空</a>
      </div>
      <div style="max-height:200px;overflow-y:auto;border:1px solid #eef1f5;border-radius:8px;padding:6px 10px">
        ${items}
      </div>
    </div>
    <div style="display:flex;gap:10px;align-items:center;flex-wrap:wrap">
      <label style="font-size:13px;color:#7a8699">日期范围（可选）：</label>
      <input type="date" id="ex-start">
      <span style="color:#7a8699">至</span>
      <input type="date" id="ex-end">
    </div>
    <div style="margin-top:10px;font-size:12px;color:#7a8699">
      未选日期：导出「无人机台账 + 状态历史」；选择日期：导出「每日状态矩阵（行=日期、列=编号）+ 变更明细 + 台账」。
    </div>`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="doExportExcel()">导出</button>`
  );
}

function toggleExModels(checked) {
  document.querySelectorAll(".ex-model").forEach((c) => (c.checked = checked));
}

function doExportExcel() {
  const selected = Array.from(document.querySelectorAll(".ex-model:checked")).map((c) => c.value);
  const start = document.getElementById("ex-start").value;
  const end = document.getElementById("ex-end").value;
  if ((start && !end) || (end && !start)) return toast("开始与结束日期需同时选择", true);
  if (start && end && start > end) return toast("开始日期不能晚于结束日期", true);
  const parts = [];
  for (const m of selected) parts.push("models=" + encodeURIComponent(m));
  if (start && end) { parts.push("start=" + start); parts.push("end=" + end); }
  window.location.href = API + "/api/export-excel" + (parts.length ? "?" + parts.join("&") : "");
  closeModal();
}

// ---------------------------------------------------------------- 飞行历史
async function openFlightModal(id) {
  const data = await api(`/api/drones/${id}/flights`);
  const d = data.drone;
  const items = data.flights.length
    ? data.flights.map((f) => `
      <div class="tl-item" style="border-left-color:#3b82f6">
        <span class="dot" style="background:#3b82f6"></span>
        <div class="tl-time">${esc(f.flight_date)}</div>
        <div style="flex:1">
          <strong>${f.duration_min} 分钟</strong>
          <div class="tl-remark">${esc(f.takeoff)} → ${esc(f.landing)}${f.remark ? " ｜ " + esc(f.remark) : ""}</div>
        </div>
        <button class="small" onclick="editFlight(${id}, ${f.id})">编辑</button>
        <button class="small danger" data-action="del-flight" data-id="${f.id}">删除</button>
      </div>`).join("")
    : `<div class="empty-tip">暂无飞行记录</div>`;
  openModal(
    `飞行历史 — ${d.serial_no}（${esc(d.model)}）`,
    `
    <div style="max-height:280px;overflow-y:auto">${items}</div>
    <div style="margin-top:14px;border-top:1px solid #eef1f5;padding-top:14px">
      <div style="font-size:13px;color:#7a8699;margin-bottom:8px">新增飞行记录</div>
      <div style="display:grid;grid-template-columns:1fr 1fr;gap:8px">
        <input id="fl-date" type="date">
        <input id="fl-dur" type="number" min="0" placeholder="时长(分钟)">
        <input id="fl-takeoff" type="text" placeholder="起飞地点">
        <input id="fl-landing" type="text" placeholder="降落地点">
      </div>
      <input id="fl-remark" type="text" placeholder="备注（可选）" style="margin-top:8px;width:100%">
    </div>`,
    `<button onclick="closeModal()">关闭</button><button class="primary" onclick="createFlight(${id})">添加飞行记录</button>`
  );
  document.querySelectorAll("#modal [data-action=del-flight]").forEach((btn) => {
    btn.addEventListener("click", async () => {
      if (!confirm("确定删除这条飞行记录吗？")) return;
      try {
        await api(`/api/drones/${id}/flights/${btn.dataset.id}`, { method: "DELETE" });
        toast("已删除");
        openFlightModal(id);
      } catch (e) { toast(e.message, true); }
    });
  });
}

async function createFlight(id) {
  const body = {
    flight_date: document.getElementById("fl-date").value,
    duration_min: parseInt(document.getElementById("fl-dur").value || "0", 10),
    takeoff: document.getElementById("fl-takeoff").value,
    landing: document.getElementById("fl-landing").value,
    remark: document.getElementById("fl-remark").value,
  };
  if (!body.flight_date) return toast("请选择飞行日期", true);
  try {
    await api(`/api/drones/${id}/flights`, { method: "POST", body: JSON.stringify(body) });
    toast("已添加");
    openFlightModal(id);
  } catch (e) { toast(e.message, true); }
}

async function editFlight(id, flightId) {
  const data = await api(`/api/drones/${id}/flights`);
  const f = data.flights.find((x) => x.id === flightId);
  if (!f) return;
  openModal(
    `编辑飞行记录 — ${data.drone.serial_no}`,
    `
    <div class="form-row"><label>飞行日期</label><input id="ef-date" type="date" value="${esc(f.flight_date)}"></div>
    <div class="form-row"><label>飞行时长（分钟）</label><input id="ef-dur" type="number" min="0" value="${f.duration_min}"></div>
    <div class="form-row"><label>起飞地点</label><input id="ef-takeoff" type="text" value="${esc(f.takeoff)}"></div>
    <div class="form-row"><label>降落地点</label><input id="ef-landing" type="text" value="${esc(f.landing)}"></div>
    <div class="form-row"><label>备注</label><input id="ef-remark" type="text" value="${esc(f.remark)}"></div>`,
    `<button onclick="openFlightModal(${id})">返回</button><button class="primary" onclick="saveFlight(${id}, ${flightId})">保存</button>`
  );
}

async function saveFlight(id, flightId) {
  const body = {
    flight_date: document.getElementById("ef-date").value,
    duration_min: parseInt(document.getElementById("ef-dur").value || "0", 10),
    takeoff: document.getElementById("ef-takeoff").value,
    landing: document.getElementById("ef-landing").value,
    remark: document.getElementById("ef-remark").value,
  };
  if (!body.flight_date) return toast("请选择飞行日期", true);
  try {
    await api(`/api/drones/${id}/flights/${flightId}`, { method: "PUT", body: JSON.stringify(body) });
    toast("已保存");
    openFlightModal(id);
  } catch (e) { toast(e.message, true); }
}

function openBatchFlightModal() {
  const items = dronesCache.length
    ? dronesCache.map((d) => `
      <label style="display:flex;align-items:center;gap:8px;padding:5px 4px;cursor:pointer">
        <input type="checkbox" class="bf-serial" value="${esc(d.serial_no)}">
        <span>${esc(d.serial_no)}</span>
        <span style="color:#7a8699;font-size:12px">(${esc(d.model)})</span>
      </label>`).join("")
    : `<div class="empty-tip">暂无无人机</div>`;
  openModal(
    "统一添加飞行历史",
    `
    <div style="margin-bottom:8px;font-size:13px;color:#7a8699">
      勾选飞机编号（列表为当前机型筛选结果），填写飞行信息后统一添加，对应飞机自动同步：
      <a href="javascript:void(0)" onclick="toggleBatch(true)" style="margin-left:10px">全选</a>
      <a href="javascript:void(0)" onclick="toggleBatch(false)" style="margin-left:8px">清空</a>
    </div>
    <div style="max-height:180px;overflow-y:auto;border:1px solid #eef1f5;border-radius:8px;padding:6px 10px">${items}</div>
    <div style="margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:8px">
      <input id="bf-date" type="date">
      <input id="bf-dur" type="number" min="0" placeholder="时长(分钟)">
      <input id="bf-takeoff" type="text" placeholder="起飞地点">
      <input id="bf-landing" type="text" placeholder="降落地点">
    </div>
    <input id="bf-remark" type="text" placeholder="备注（可选）" style="margin-top:8px;width:100%">`,
    `<button onclick="closeModal()">取消</button><button class="primary" onclick="submitBatchFlight()">统一添加</button>`
  );
}

function toggleBatch(checked) {
  document.querySelectorAll(".bf-serial").forEach((c) => (c.checked = checked));
}

async function submitBatchFlight() {
  const serials = Array.from(document.querySelectorAll(".bf-serial:checked")).map((c) => c.value);
  const body = {
    serial_nos: serials,
    flight_date: document.getElementById("bf-date").value,
    duration_min: parseInt(document.getElementById("bf-dur").value || "0", 10),
    takeoff: document.getElementById("bf-takeoff").value,
    landing: document.getElementById("bf-landing").value,
    remark: document.getElementById("bf-remark").value,
  };
  if (!serials.length) return toast("请至少勾选一架飞机", true);
  if (!body.flight_date) return toast("请选择飞行日期", true);
  try {
    const r = await api("/api/flights/batch", { method: "POST", body: JSON.stringify(body) });
    closeModal();
    toast(`已为 ${r.added.length} 架添加飞行记录` + (r.missing.length ? `，${r.missing.length} 个编号未找到` : ""));
  } catch (e) { toast(e.message, true); }
}

// ---------------------------------------------------------------- 透视表
async function renderMatrix() {
  const model = document.getElementById("matrix-model").value;
  const start = document.getElementById("matrix-start").value;
  const end = document.getElementById("matrix-end").value;
  const box = document.getElementById("matrix-box");
  if (!model) {
    box.innerHTML = `<div class="empty-tip">请先在「无人机管理」中添加无人机，然后选择机型查看透视表</div>`;
    return;
  }
  let q = `?model=${encodeURIComponent(model)}`;
  const ms = document.getElementById("matrix-serial").value.trim();
  const mf = document.getElementById("matrix-fc").value.trim();
  const mst = document.getElementById("matrix-status").value;
  if (ms) q += `&serial_no=${encodeURIComponent(ms)}`;
  if (mf) q += `&fc_id=${encodeURIComponent(mf)}`;
  if (mst) q += `&status=${encodeURIComponent(mst)}`;
  if (start) q += `&start=${start}`;
  if (end) q += `&end=${end}`;
  box.innerHTML = `<div class="empty-tip">加载中…</div>`;
  const m = await api("/api/status-matrix" + q);
  if (!m.drones.length) {
    box.innerHTML = `<div class="empty-tip">该机型下暂无无人机</div>`;
    return;
  }
  const thead = `<tr><th class="corner">日期 ＼ 编号</th>` +
    m.drones.map((d) => `<th>${esc(d.serial_no)}</th>`).join("") + `</tr>`;
  const tbody = m.dates.map((day, i) => {
    const cells = m.drones.map((d) => {
      const st = d.statuses[i];
      const rm = d.remarks[i];
      return st
        ? `<td><span class="cell" style="background:${badgeColor(st)}">${esc(st)}${rm ? `<span class="cell-remark">${esc(rm)}</span>` : ""}</span></td>`
        : `<td><span class="cell empty-cell">—</span></td>`;
    }).join("");
    return `<tr><td>${esc(day)}</td>${cells}</tr>`;
  }).join("");
  box.innerHTML = `
    <div style="margin-bottom:10px;font-size:13px;color:#7a8699">
      机型：<strong>${esc(m.model)}</strong> ｜ 日期范围：${esc(m.start)} ~ ${esc(m.end)}
      （共 ${m.dates.length} 天，${m.drones.length} 架）
    </div>
    <div class="table-wrap matrix-wrap">
      <table id="matrix-table"><thead>${thead}</thead><tbody>${tbody}</tbody></table>
    </div>`;
}

// ---------------------------------------------------------------- 飞行透视表
async function renderFlightMatrix() {
  const model = document.getElementById("flight-model").value;
  const start = document.getElementById("flight-start").value;
  const end = document.getElementById("flight-end").value;
  const box = document.getElementById("flight-box");
  if (!model) {
    box.innerHTML = `<div class="empty-tip">请先在「无人机管理」中添加无人机，然后选择机型查看飞行透视表</div>`;
    return;
  }
  let q = `?model=${encodeURIComponent(model)}`;
  const fs2 = document.getElementById("flight-serial").value.trim();
  const ff = document.getElementById("flight-fc").value.trim();
  if (fs2) q += `&serial_no=${encodeURIComponent(fs2)}`;
  if (ff) q += `&fc_id=${encodeURIComponent(ff)}`;
  if (start) q += `&start=${start}`;
  if (end) q += `&end=${end}`;
  box.innerHTML = `<div class="empty-tip">加载中…</div>`;
  const m = await api("/api/flight-matrix" + q);
  if (!m.drones.length) {
    box.innerHTML = `<div class="empty-tip">该机型下暂无无人机</div>`;
    return;
  }
  const thead = `<tr><th class="corner">日期 ＼ 编号</th>` +
    m.drones.map((d) => `<th>${esc(d.serial_no)}</th>`).join("") + `</tr>`;
  const tbody = m.dates.map((day, i) => {
    const cells = m.drones.map((d) => {
      const c = d.counts[i];
      const rm = d.remarks[i];
      return c
        ? `<td><span class="cell" style="background:#3b82f6">${c} 次${rm ? `<span class="cell-remark">${esc(rm)}</span>` : ""}</span></td>`
        : `<td><span class="cell empty-cell">—</span></td>`;
    }).join("");
    return `<tr><td>${esc(day)}</td>${cells}</tr>`;
  }).join("");
  // 总架次统计行（按筛选日期范围汇总）
  const totals = m.drones.map((d) => d.counts.reduce((a, b) => a + b, 0));
  const totalRow = `<tr style="border-top:2px solid #c3cbd6">
    <td style="font-weight:700;background:#eef1f5">总架次</td>` +
    totals.map((t) =>
      t
        ? `<td style="background:#eef1f5"><span class="cell" style="background:#64748b">${t} 次</span></td>`
        : `<td style="background:#eef1f5"><span class="cell empty-cell">—</span></td>`
    ).join("") + `</tr>`;
  box.innerHTML = `
    <div style="margin-bottom:10px;font-size:13px;color:#7a8699">
      机型：<strong>${esc(m.model)}</strong> ｜ 日期范围：${esc(m.start)} ~ ${esc(m.end)}
      （共 ${m.dates.length} 天，${m.drones.length} 架）
    </div>
    <div class="table-wrap matrix-wrap">
      <table id="matrix-table"><thead>${thead}</thead><tbody>${totalRow}${tbody}</tbody></table>
    </div>`;
}

// ---------------------------------------------------------------- 初始化
function initMatrixDefaults() {
  const now = new Date();
  document.getElementById("matrix-end").value = now.toISOString().slice(0, 10);
  const start = new Date(now);
  start.setDate(start.getDate() - 29);
  document.getElementById("matrix-start").value = start.toISOString().slice(0, 10);
}

async function init() {
  document.getElementById("tab-drones").onclick = () => switchTab("drones");
  document.getElementById("tab-matrix").onclick = () => switchTab("matrix");
  document.getElementById("tab-flight").onclick = () => switchTab("flight");
  document.getElementById("add-drone").onclick = openCreateModal;
  document.getElementById("status-manager").onclick = openStatusManager;
  document.getElementById("export-excel").onclick = openExportModal;
  document.getElementById("batch-flight").onclick = openBatchFlightModal;
  document.getElementById("batch-status").onclick = openBatchStatusModal;
  document.getElementById("batch-edit-flight").onclick = openBatchEditFlightModal;
  document.getElementById("batch-delete").onclick = openBatchDeleteModal;
  document.getElementById("model-filter").onchange = () => loadDrones();
  document.getElementById("apply-filter").onclick = loadDrones;
  document.getElementById("reset-filter").onclick = resetDronesFilter;
  document.getElementById("matrix-query").onclick = renderMatrix;
  document.getElementById("flight-query").onclick = renderFlightMatrix;
  initMatrixDefaults();
  document.getElementById("flight-end").value = new Date().toISOString().slice(0, 10);
  const fs = new Date(); fs.setDate(fs.getDate() - 29);
  document.getElementById("flight-start").value = fs.toISOString().slice(0, 10);
  try {
    await Promise.all([loadModels(), loadDrones(), loadStatusTypes()]);
    const hashTab = location.hash.replace("#", "");
    if (["matrix", "drones", "flight"].includes(hashTab)) switchTab(hashTab);
  } catch (e) {
    toast("加载数据失败：" + e.message, true);
  }
}

document.addEventListener("DOMContentLoaded", init);