"use strict";
/* Журнал заявок на ремонт оборудования
   Архетип: операционная очередь (queue). Данные — localStorage. */

var STORAGE_KEY = "remont-zayavok-v1";

var STATUSES = {
  new:        { label: "Новая", tone: "info" },
  inwork:     { label: "В работе", tone: "warn" },
  waiting:    { label: "Ожидает запчасти", tone: "muted" },
  done:       { label: "Выполнено", tone: "ok" },
  cancelled:  { label: "Отменена", tone: "risk" }
};

var PRIORITIES = {
  low:    { label: "Низкий" },
  normal: { label: "Средний", tone: "muted" },
  high:   { label: "Высокий", tone: "risk" }
};

var PRIORITY_OPTIONS = [
  { key: "", label: "Все" },
  { key: "high", label: "Высокий" },
  { key: "normal", label: "Средний" },
  { key: "low", label: "Низкий" }
];

function todayIso(offsetDays) {
  var d = new Date();
  d.setDate(d.getDate() + (offsetDays || 0));
  var m = String(d.getMonth() + 1);
  var day = String(d.getDate());
  if (m.length < 2) m = "0" + m;
  if (day.length < 2) day = "0" + day;
  return d.getFullYear() + "-" + m + "-" + day;
}

function seedRequests() {
  return [
    { id: "ОБ-2026-0027", equipment: "Коммутатор C803", address: "Машинный зал, стеллаж 4, стойка 02", reporter: "Айбек С.", created: todayIso(-1), status: "new", priority: "high", reason: "Оборудование не отвечает, индикатор питания не горит" },
    { id: "ОБ-2026-0026", equipment: "UPS 3 кВА", address: "Машинный зал, стеллаж 3", reporter: "Айбек С.", created: todayIso(-1), status: "inwork", priority: "normal", reason: "Звуковое оповещение о разряде батареи не отключается" },
    { id: "ОБ-2026-0025", equipment: "Кабельная линейка UTP, 6-я линия", address: "Служебный модуль, линия 06", reporter: "Данияр К.", created: todayIso(-2), status: "waiting", priority: "normal", reason: "Постоянные обрывы линии, обрыв фиксируется каждые 10–15 минут" },
    { id: "ОБ-2026-0024", equipment: "Маршрутизатор", address: "Уровень 4, шкаф связи", reporter: "Сейсем М.", created: todayIso(-4), status: "inwork", priority: "high", reason: "Нагрузка на устройства уровня 4 нестабильна, скорость падает" },
    { id: "ОБ-2026-0023", equipment: "Коммутатор ЦОД", address: "Машинный зал, стеллаж 3, стойка 01", reporter: "Айбек С.", created: todayIso(-5), status: "done", priority: "normal", reason: "Появились ошибки в портах, пакетная потеря" },
    { id: "ОБ-2026-0022", equipment: "Серверный шкаф, дверь", address: "Служебный модуль, линия 14", reporter: "Данияр К.", created: todayIso(-6), status: "done", priority: "low", reason: "Блокиратор двери не фиксирует, закрывает с задержкой" },
    { id: "ОБ-2026-0021", equipment: "Телевизор, зал ожидания", address: "Этаж 2, зона ожидания", reporter: "Сейсем М.", created: todayIso(-7), status: "done", priority: "low", reason: "Нет изображения, звук работает" },
    { id: "ОБ-2026-0020", equipment: "Телевизор, зона ожидания", address: "Этаж 2, зона ожидания", reporter: "Эльмира Б.", created: todayIso(-9), status: "done", priority: "low", reason: "Изображение мерцает" },
    { id: "ОБ-2026-0019", equipment: "Устройство резервного питания", address: "Служебный модуль, линия 06", reporter: "Данияр К.", created: todayIso(-10), status: "waiting", priority: "normal", reason: "Батарея держит заряд 3 минуты, требует замены" },
    { id: "ОБ-2026-0018", equipment: "Кабельная линейка, 3-я линия", address: "Служебный модуль, линия 03", reporter: "Айбек С.", created: todayIso(-12), status: "cancelled", priority: "normal", reason: "Обрыв линии — по заявке, дубликат" }
  ];
}

function nextId() {
  var n = (window.REMOUNT_NEXT || 0);
  n += 1;
  window.REMOUNT_NEXT = n;
  var s = String(n);
  while (s.length < 4) s = "0" + s;
  return "ОБ-2026-" + s;
}

/* ---------- Состояние приложения ---------- */
var state = {
  requests: [],
  query: "",
  statusFilter: "",   // "" = все
  priorityFilter: "", // "" = все
  openId: null,       // id записи в drawer
  drawerMode: ""      // "" | "view" | "new" | "edit"
};

function loadRequests() {
  var raw = "";
  try {
    raw = localStorage.getItem(STORAGE_KEY);
  } catch (e) {
    return null;
  }
  if (!raw) return null;
  var parsed = null;
  try {
    parsed = JSON.parse(raw);
  } catch (e) {
    return null;
  }
  if (!parsed || !parsed.requests) return null;
  if (typeof parsed.nextSeq === "number") window.REMOUNT_NEXT = parsed.nextSeq;
  return parsed.requests;
}

function saveRequests() {
  var data = { requests: state.requests, nextSeq: window.REMOUNT_NEXT || 0 };
  try {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(data));
  } catch (e) {
    /* localStorage может быть недоступен — просто не сохраняем */
  }
}

function initRequests() {
  var loaded = loadRequests();
  if (loaded && loaded.length > 0) {
    state.requests = loaded;
  } else {
    state.requests = seedRequests();
    var maxSeq = 27;
    for (var i = 0; i < state.requests.length; i++) {
      var m = /(\d+)$/.exec(state.requests[i].id);
      if (m) {
        var num = parseInt(m[1], 10);
        if (num > maxSeq) maxSeq = num;
      }
    }
    window.REMOUNT_NEXT = maxSeq;
    saveRequests();
  }
}

/* ---------- Утилиты ---------- */
function $(id) {
  return document.getElementById(id);
}

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

function fmtDate(iso) {
  if (!iso) return "—";
  var p = iso.split("-");
  if (p.length !== 3) return iso;
  return p[2] + "." + p[1] + "." + p[0];
}

function findRequest(id) {
  for (var i = 0; i < state.requests.length; i++) {
    if (state.requests[i].id === id) return state.requests[i];
  }
  return null;
}

function statusPill(status) {
  var st = STATUSES[status] || { label: status, tone: "muted" };
  return '<span class="kt-ai-status-pill" data-status="' + st.tone + '">' + esc(st.label) + "</span>";
}

function prioChip(p) {
  var pr = PRIORITIES[p] || PRIORITIES.normal;
  return '<span class="kt-ai-chip" data-tone="' + pr.tone + '">' + esc(pr.label) + "</span>";
}

function filteredRequests(q) {
  q = (q == null ? "" : q).trim().toLowerCase();
  var out = [];
  for (var i = 0; i < state.requests.length; i++) {
    var r = state.requests[i];
    if (state.statusFilter && r.status !== state.statusFilter) continue;
    if (state.priorityFilter && r.priority !== state.priorityFilter) continue;
    if (q) {
      if (String(r.equipment).toLowerCase().indexOf(q) === -1) continue;
    }
    out.push(r);
  }
  return out;
}

function statusCounts(q) {
  var c = { "": 0, new: 0, inwork: 0, waiting: 0, done: 0, cancelled: 0 };
  for (var i = 0; i < state.requests.length; i++) {
    var r = state.requests[i];
    if (state.priorityFilter && r.priority !== state.priorityFilter) continue;
    if (q) {
      if (String(r.equipment).toLowerCase().indexOf(q) === -1) continue;
    }
    c[""] += 1;
    c[r.status] = (c[r.status] || 0) + 1;
  }
  return c;
}

/* ---------- Отрисовка ---------- */
function renderKpis() {
  var c = statusCounts(state.query);
  var items = [
    { value: c[""], label: "Заявки всего" },
    { value: c.inwork + (c.waiting || 0), label: "В работе" },
    { value: c.new, label: "Новые" },
    { value: c.done, label: "Выполнено" }
  ];
  var h = "";
  for (var i = 0; i < items.length; i++) {
    h += '<div class="kt-ai-kpi"><span class="value">' + items[i].value +
      '</span><span class="label">' + esc(items[i].label) + "</span></div>";
  }
  var strip = $("kpiStrip");
  if (strip) strip.innerHTML = h;
  var nav = $("navCount");
  if (nav) nav.textContent = c[""];
}

var SEG_OPTIONS = [
  { key: "", label: "Все" },
  { key: "new", label: "Новые" },
  { key: "inwork", label: "В работе" },
  { key: "waiting", label: "Ожидание" },
  { key: "done", label: "Выполнено" }
];

function renderStatusSeg() {
  var h = "";
  for (var i = 0; i < SEG_OPTIONS.length; i++) {
    var o = SEG_OPTIONS[i];
    var active = state.statusFilter === o.key;
    h += '<button class="seg" data-active="' + active + '" onclick="S.setSeg(\'' + o.key + '\')">' + esc(o.label) + "</button>";
  }
  var seg = $("statusSeg");
  if (seg) seg.innerHTML = h;
}

function renderTable() {
  var wrap = $("tableWrap");
  if (!wrap) return;
  var vis = filteredRequests(state.query);
  if (vis.length === 0) {
    var zeroData = state.requests.length === 0;
    var icon = zeroData
      ? '<rect x="3" y="4" width="18" height="16" rx="2"/><path d="M3 10h18M9 16h6"/>'
      : '<circle cx="11" cy="11" r="7"/><path d="M21 21l-4.3-4.3"/>';
    wrap.innerHTML = '<div class="kt-ai-empty"><div class="icon-spot"><svg class="kt-icon kt-icon-lg" viewBox="0 0 24 24">' + icon + "</svg></div>" +
      "<span class=\"title\">" + (zeroData ? "Пока нет заявок" : "Ничего не найдено") + "</span>" +
      "<span>" + (zeroData
        ? "Создайте первую заявку кнопкой «Новая заявка»"
        : "Измените поиск или фильтр статуса") + "</span></div>";
    return;
  }

  var h = '<table class="kt-ai-table"><thead><tr>' +
    "<th>№</th><th>Оборудование / адрес</th><th>Статус</th><th>Приоритет</th><th>Создана</th><th>Кто</th>" +
    "</tr></thead><tbody>";

  for (var i = 0; i < vis.length; i++) {
    var r = vis[i];
    h += '<tr class="j-row" onclick="S.openView(\'' + esc(r.id) + '\')">' +
      '<td class="j-id">' + esc(r.id) + "</td>" +
      '<td><span class="j-name">' + esc(r.equipment) + '</span>' +
        '<span class="j-sub">' + esc(r.address) + "</span></td>" +
      "<td>" + statusPill(r.status) + "</td>" +
      '<td class="j-prio">' + prioChip(r.priority) + "</td>" +
      '<td class="j-date">' + esc(fmtDate(r.created)) + "</td>" +
      '<td>' + esc(r.reporter) + "</td>" +
      "</tr>";
  }
  h += "</tbody></table>";
  wrap.innerHTML = h;
  var el = $("visCount");
  if (el) el.textContent = vis.length + " из " + state.requests.length;
}

function renderPrioSelect() {
  var sel = $("prioSelect");
  if (!sel) return;
  var h = "";
  for (var i = 0; i < PRIORITY_OPTIONS.length; i++) {
    var o = PRIORITY_OPTIONS[i];
    var active = state.priorityFilter === o.key ? "1" : "0";
    h += '<option value="' + o.key + '"' + (active ? " selected" : "") + ">" + esc(o.label) + "</option>";
  }
  sel.innerHTML = h;
}

function renderAll() {
  renderKpis();
  renderStatusSeg();
  renderPrioSelect();
  renderTable();
}

/* ---------- Drawer ---------- */
function openDrawer() {
  var dr = $("drawer");
  if (dr) {
    dr.style.display = "block";
    dr.onkeydown = function (e) {
      if (e.key === "Escape") closeDrawer();
    };
    dr.focus();
  }
}

function closeDrawer() {
  var dr = $("drawer");
  if (dr) dr.style.display = "none";
  state.openId = null;
  state.drawerMode = "";
}

function fieldRow(k, v, multiline) {
  return '<div><span class="k">' + esc(k) + '</span><span class="v' + (multiline ? " j-multiline" : "") + '">' + esc(v) + "</span></div>";
}

function renderView(id) {
  var r = findRequest(id);
  if (!r) return "";
  var prio = PRIORITIES[r.priority] || { label: "—" };
  var actions = "";
  if (r.status === "new") {
    actions += '<button class="kt-ai-btn" data-variant="primary" onclick="S.setStatus(\'' + esc(r.id) + '\',\'inwork\')">Взять в работу</button>';
  }
  if (r.status === "inwork") {
    actions += '<button class="kt-ai-btn" onclick="S.setStatus(\'' + esc(r.id) + '\',\'waiting\')">Ожидание запчасти</button>';
    actions += '<button class="kt-ai-btn" data-variant="primary" onclick="S.setStatus(\'' + esc(r.id) + '\',\'done\')">Завершить</button>';
  }
  if (r.status === "waiting") {
    actions += '<button class="kt-ai-btn" data-variant="primary" onclick="S.setStatus(\'' + esc(r.id) + '\',\'inwork\')">Продолжить работу</button>';
  }
  if (r.status !== "done" && r.status !== "cancelled") {
    actions += '<button class="kt-ai-btn" data-variant="danger" onclick="S.cancel(\'' + esc(r.id) + '\')">Отменить</button>';
  }
  actions += '<button class="kt-ai-btn" data-variant="ghost" onclick="S.closeDrawer()" style="margin-left:auto">Закрыть</button>';

  return '<div class="j-drawer-head"><div class="t">' +
    '<div class="id">' + esc(r.id) + "</div>" +
    '<div class="kt-ai-h2" id="drawerTitle">' + esc(r.equipment) + "</div>" +
    '<div style="margin-top:var(--kt-ai-space-3)">' + statusPill(r.status) + "</div>" +
    "</div>" +
    '<button class="kt-ai-icon-button" aria-label="Закрыть" onclick="S.closeDrawer()"><svg class="kt-icon" viewBox="0 0 24 24"><path d="M18 6L6 18M6 6l12 12"/></svg></button></div>' +
    '<div class="j-drawer-grid">' +
    fieldRow("Адрес", r.address) +
    fieldRow("Заявил", r.reporter) +
    fieldRow("Дата", fmtDate(r.created)) +
    fieldRow("Приоритет", prio.label) +
    fieldRow("Обоснование", r.reason, true) +
    "</div>" +
    (actions ? '<div class="j-drawer-actions">' + actions + "</div>" : "");
}

function optionList(opts, selected) {
  var h = "";
  for (var i = 0; i < opts.length; i++) {
    var o = opts[i];
    h += "<option value=\"" + o.value + "\"" + (o.value === selected ? " selected" : "") + ">" + esc(o.label) + "</option>";
  }
  return h;
}

function renderNewForm() {
  return '<div class="j-drawer-head"><div class="t">' +
    '<div class="kt-ai-h2" id="drawerTitle">Новая заявка</div>' +
    "</div>" +
    '<button class="kt-ai-icon-button" aria-label="Закрыть" onclick="S.closeDrawer()"><svg class="kt-icon" viewBox="0 0 24 24"><path d="M18 6L6 18M6 6l12 12"/></svg></button></div>' +
    '<form id="reqForm" novalidate>' +
    '<div class="j-form-grid">' +
    '<div class="kt-ai-field"><label for="fEquip">Оборудование *</label>' +
    '<input class="kt-ai-input" id="fEquip" placeholder="Например: Коммутатор" required></div>' +
    '<div class="kt-ai-field"><label for="fAddr">Адрес / расположение *</label>' +
    '<input class="kt-ai-input" id="fAddr" placeholder="Отдел, этаж, шкаф" required></div>' +
    '<div class="kt-ai-field"><label for="fReporter">Заявил *</label>' +
    '<input class="kt-ai-input" id="fReporter" placeholder="Имя и фамилия" required></div>' +
    '<div class="kt-ai-field"><label for="fPrio">Приоритет</label>' +
    '<div class="kt-ai-select-wrap"><select class="kt-ai-select" id="fPrio">' +
    optionList(PRIORITIES, "normal") +
    "</select></div></div>" +
    '<div class="kt-ai-field span-2"><label for="fReason">Обоснование *</label>' +
    '<textarea class="kt-ai-textarea" id="fReason" placeholder="Что случилось, как проявляется" required></textarea></div>' +
    "</div>" +
    '<div class="j-drawer-actions">' +
    '<button type="button" class="kt-ai-btn" data-variant="ghost" onclick="S.closeDrawer()">Отмена</button>' +
    '<button type="submit" class="kt-ai-btn" data-variant="primary">Сохранить заявку</button>' +
    "</div></form>";
}

function bindForm() {
  var form = $("reqForm");
  if (!form) return;
  form.onsubmit = function (e) {
    e.preventDefault();
    var equip = ($("fEquip").value || "").trim();
    var addr = ($("fAddr").value || "").trim();
    var rep = ($("fReporter").value || "").trim();
    var reason = ($("fReason").value || "").trim();
    var prio = $("fPrio").value || "normal";
    var bad = 0;
    setErr("fEquip", equip);
    setErr("fAddr", addr);
    setErr("fReporter", rep);
    setErr("fReason", reason);
    function setErr(fid, v) {
      if (!v) bad++;
      var el = $(fid);
      var f = el ? el.closest(".kt-ai-field") : null;
      if (f) f.setAttribute("data-error", v ? "false" : "true");
    }
    if (bad > 0) return;
    var r = {
      id: nextId(),
      equipment: equip,
      address: addr,
      reporter: rep,
      created: todayIso(0),
      status: "new",
      priority: prio,
      reason: reason
    };
    state.requests.unshift(r);
    saveRequests();
    renderAll();
    S.openView(r.id);
    toast("Заявка " + r.id + " создана", "ok");
  };
}

function renderEditForm(id) {
  var r = findRequest(id);
  if (!r) return "";
  var can = {};
  can.new = r.status === "new" || r.status === "inwork" || r.status === "waiting";
  var h = '<div class="j-drawer-head"><div class="t">' +
    '<div class="id">' + esc(r.id) + "</div>" +
    '<div class="kt-ai-h2" id="drawerTitle">' + esc(r.equipment) + "</div>" +
    "</div>" +
    '<button class="kt-ai-icon-button" aria-label="Закрыть" onclick="S.closeDrawer()"><svg class="kt-icon" viewBox="0 0 24 24"><path d="M18 6L6 18M6 6l12 12"/></svg></button></div>' +
    '<form id="reqForm" novalidate>' +
    '<div class="j-form-grid">' +
    '<div class="kt-ai-field"><label for="fEquip">Оборудование *</label>' +
    '<input class="kt-ai-input" id="fEquip" value="' + esc(r.equipment) + '"></div>' +
    '<div class="kt-ai-field"><label for="fAddr">Адрес / расположение *</label>' +
    '<input class="kt-ai-input" id="fAddr" value="' + esc(r.address) + '"></div>' +
    '<div class="kt-ai-field"><label for="fReporter">Заявил *</label>' +
    '<input class="kt-ai-input" id="fReporter" value="' + esc(r.reporter) + '"></div>' +
    '<div class="kt-ai-field"><label for="fPrio">Приоритет</label>' +
    '<div class="kt-ai-select-wrap"><select class="kt-ai-select" id="fPrio">' + optionList(PRIORITIES, r.priority) + "</select></div></div>" +
    '<div class="kt-ai-field span-2"><label for="fReason">Обоснование *</label>' +
    '<textarea class="kt-ai-textarea" id="fReason">' + esc(r.reason) + "</textarea></div>" +
    (can.new
      ? '<div class="kt-ai-field span-2"><label for="fStat">Статус</label>' +
        '<div class="kt-ai-select-wrap"><select class="kt-ai-select" id="fStat">' +
        '<option value="new"' + (r.status === "new" ? " selected" : "") + ">Новая</option>" +
        '<option value="inwork"' + (r.status === "inwork" ? " selected" : "") + ">В работе</option>" +
        '<option value="waiting"' + (r.status === "waiting" ? " selected" : "") + ">Ожидает запчасти</option>" +
        "</select></div></div>"
      : "") +
    "</div>" +
    '<div class="j-drawer-actions">' +
    '<button type="button" class="kt-ai-btn" data-variant="ghost" onclick="S.closeDrawer()">Отмена</button>' +
    '<button type="submit" class="kt-ai-btn" data-variant="primary">Сохранить</button>' +
    "</div></form>";
  return h;
}

function bindEditForm(id) {
  var form = $("reqForm");
  if (!form) return;
  form.onsubmit = function (e) {
    e.preventDefault();
    var r = findRequest(id);
    if (!r) return;
    var equip = ($("fEquip").value || "").trim();
    var addr = ($("fAddr").value || "").trim();
    var rep = ($("fReporter").value || "").trim();
    var reason = ($("fReason").value || "").trim();
    var bad = 0;
    function setErr(fid, v) {
      if (!v) bad++;
      var el = $(fid);
      var f = el ? el.closest(".kt-ai-field") : null;
      if (f) f.setAttribute("data-error", v ? "false" : "true");
    }
    setErr("fEquip", equip);
    setErr("fAddr", addr);
    setErr("fReporter", rep);
    setErr("fReason", reason);
    if (bad > 0) return;
    r.equipment = equip;
    r.address = addr;
    r.reporter = rep;
    r.reason = reason;
    r.priority = $("fPrio").value || r.priority;
    var fStat = $("fStat");
    if (fStat) r.status = fStat.value;
    saveRequests();
    renderAll();
    S.openView(id);
    toast("Заявка " + id + " обновлена", "ok");
  };
}

/* ---------- Toast ---------- */
function toast(text, tone) {
  var stack = $("toasts");
  if (!stack) return;
  var el = document.createElement("div");
  el.className = "kt-ai-toast";
  el.setAttribute("data-tone", tone || "");
  el.textContent = text;
  stack.appendChild(el);
  setTimeout(function () {
    if (el.parentNode) el.parentNode.removeChild(el);
  }, 3600);
}

/* ---------- Публичный API ---------- */
var S = {};

S.goList = function () {
  renderAll();
};

S.openView = function (id) {
  state.openId = id;
  state.drawerMode = "view";
  var dr = $("drawer");
  if (dr) {
    dr.innerHTML = renderView(id);
    openDrawer();
  }
};

S.openNew = function () {
  state.openId = null;
  state.drawerMode = "new";
  var dr = $("drawer");
  if (dr) {
    dr.innerHTML = renderNewForm();
    openDrawer();
    bindForm();
  }
};

S.openEdit = function (id) {
  state.openId = id;
  state.drawerMode = "edit";
  var dr = $("drawer");
  if (dr) {
    dr.innerHTML = renderEditForm(id);
    openDrawer();
    bindEditForm(id);
  }
};

S.closeDrawer = closeDrawer;

S.setStatus = function (id, st) {
  var r = findRequest(id);
  if (!r) return;
  if (!STATUSES[st]) return;
  r.status = st;
  saveRequests();
  renderAll();
  S.openView(id);
  toast("Статус: " + (STATUSES[st] ? STATUSES[st].label : st), "ok");
};

S.cancel = function (id) {
  var r = findRequest(id);
  if (!r) return;
  r.status = "cancelled";
  saveRequests();
  renderAll();
  S.openView(id);
  toast("Заявка " + id + " отменена", "warn");
};

S.setSeg = function (key) {
  state.statusFilter = key;
  renderKpis();
  renderStatusSeg();
  renderTable();
};

S.onSearch = function (v) {
  state.query = v;
  renderAll();
};

S.setPrio = function (v) {
  state.priorityFilter = v;
  renderAll();
};

S.toggleSidebar = function () {
  var sb = $("sidebar");
  if (sb) sb.setAttribute("data-open", sb.getAttribute("data-open") === "true" ? "false" : "true");
};

/* ---------- Старт ---------- */
document.addEventListener("DOMContentLoaded", function () {
  initRequests();
  renderAll();
});