import { runtimeStatus } from "/assets/js/ui-semantics.js";
import { state as appState } from "/assets/js/state.js";
import { addStorageSettings } from "./storage.js";
import { renderDevice } from "./device.js";
import { renderHosts } from "/assets/js/devices.js";
import {
  bulkSections,
  field,
  labels,
  options,
  sectionMeta,
  sectionOrder,
} from "./schema.js";
import { tr } from "/assets/js/i18n.js";
import { loadPlugins, pluginText, renderPlugins } from "./hardware.js";
import { $, configurableHosts, esc, hostLabel } from "/assets/js/shared.js";
import { get, rows } from "/assets/js/navigation.js";
import {
  loadServices,
  renderServiceLists,
  resetMonitorForm,
  saveMonitor,
  tokenHeaders,
} from "./services.js";
import {
  applyBulkConfig,
  deleteHost,
  saveHost,
} from "/assets/js/device-actions.js";

export function renderGeneral(s, v) {
  if (s === "device") return renderDevice(v);
  const [t, d] = sectionMeta[s] || [s, ""];
  return `<div class="group"><div class="group-head"><div><h3>${tr(t)}</h3><div class="hint">${tr(d)}</div></div></div><div class="fields">${
    Object.entries(v)
      .map(([k, x]) => field(s, k, x))
      .join("") || '<div class="muted">暂无配置项</div>'
  }</div></div>`;
}
export function renderServices() {
  return `<div class="group"><div class="group-head"><div><h3>当前系统服务</h3><div class="hint">点击“加入监控”会自动填写下方表单；也可以手动输入尚未安装的未来服务。</div></div><button id="refreshServices">刷新列表</button></div><input class="service-search" id="serviceSearch" placeholder="搜索服务名称或说明"><div class="service-list rows" id="systemServices"><div class="muted">正在读取 systemd 服务…</div></div></div><div class="group"><h3>已监控服务</h3><div class="hint">“暂停监控”只停止状态检查，不影响服务运行；“停止服务”才会操作 systemd。</div><div class="rows" id="monitoredServices"></div></div><div class="group"><h3 id="serviceFormTitle">新建服务监控</h3><div class="service-form"><label>OLED 显示名称<input id="monitorName" maxlength="64" placeholder="例如：DOCKER"></label><label>systemd 服务名称<input id="monitorTarget" maxlength="128" placeholder="例如：docker.service"></label><label class="full">备注说明<input id="monitorNote" maxlength="120" placeholder="例如：家庭相册容器服务"></label><div class="full action-row"><button id="saveMonitor">保存监控</button> <button id="resetMonitor">清空</button> <span id="serviceMessage" class="muted"></span></div></div></div>`;
}
export function renderProcesses() {
  return `<div class="group"><h3>${pluginText("已监控进程", "Monitored processes")}</h3><div class="hint">${pluginText("用于没有 systemd 服务的程序，通过 pgrep -f 匹配完整命令行。", "For programs without a systemd service. Matching uses pgrep -f against the full command line.")}</div><div class="rows" id="processList"><div class="muted">${pluginText("正在读取进程监控…", "Loading process monitors…")}</div></div></div><div class="group"><h3 id="processFormTitle">${pluginText("新建进程监控", "Add process monitor")}</h3><div class="service-form"><label>${pluginText("显示名称", "Display name")}<input id="processName" maxlength="64" placeholder="例如：MYAPP"></label><label>${pluginText("进程匹配关键字", "Process match expression")}<input id="processTarget" maxlength="256" placeholder="例如：/opt/myapp/server"></label><div class="full action-row"><button id="saveProcess">${pluginText("保存监控", "Save monitor")}</button><button id="resetProcess">${pluginText("清空", "Clear")}</button><span id="processMessage" class="muted"></span></div></div></div>`;
}

export async function loadProcesses() {
  if (!$("processList")) return;
  try {
    const d = await get(
      `/api/v1/processes?host=${encodeURIComponent(appState.currentConfigHost)}`,
    );
    appState.processCache = d.processes;
    renderProcessList();
  } catch (e) {
    $("processList").innerHTML = `<div class="error">${esc(e.message)}</div>`;
  }
}
export function renderProcessList() {
  rows(
    "processList",
    appState.processCache.map(
      (p) =>
        `<div class="row"><span><b>${esc(p.name)}</b> ${runtimeStatus(p.up, appState.LANG)}<br><span class="muted">${esc(p.target)}</span></span><span class="row-actions"><button data-edit-process="${esc(p.name)}">${tr("编辑")}</button><button class="danger" data-delete-process="${esc(p.name)}">${tr("删除")}</button></span></div>`,
    ),
    pluginText("尚未监控任何普通进程", "No process monitors configured"),
  );
  document
    .querySelectorAll("[data-edit-process]")
    .forEach((b) => (b.onclick = () => selectProcess(b.dataset.editProcess)));
  document
    .querySelectorAll("[data-delete-process]")
    .forEach((b) => (b.onclick = () => deleteProcess(b.dataset.deleteProcess)));
}
export function selectProcess(name) {
  const p = appState.processCache.find((x) => x.name === name);
  if (!p) return;
  appState.editingProcessName = p.name;
  $("processName").value = p.name;
  $("processTarget").value = p.target;
  $("processFormTitle").textContent = pluginText(
    "编辑进程监控",
    "Edit process monitor",
  );
}
export function resetProcessForm() {
  appState.editingProcessName = "";
  $("processName").value = "";
  $("processTarget").value = "";
  $("processFormTitle").textContent = pluginText(
    "新建进程监控",
    "Add process monitor",
  );
  $("processMessage").textContent = "";
}
export async function saveProcess() {
  const state = $("processMessage");
  try {
    state.textContent = pluginText("正在保存…", "Saving…");
    await get("/api/v1/processes", {
      method: "PUT",
      headers: tokenHeaders(),
      body: JSON.stringify({
        host: appState.currentConfigHost,
        operation: "save",
        name: $("processName").value.trim(),
        target: $("processTarget").value.trim(),
        previous_name: appState.editingProcessName,
      }),
    });
    resetProcessForm();
    await loadProcesses();
    state.textContent = pluginText("保存成功", "Saved");
    state.className = "success";
  } catch (e) {
    state.textContent = e.message;
    state.className = "error";
  }
}
export async function deleteProcess(name) {
  if (
    !confirm(
      pluginText(
        `确定删除 ${name} 的进程监控吗？`,
        `Remove process monitor ${name}?`,
      ),
    )
  )
    return;
  try {
    await get("/api/v1/processes", {
      method: "PUT",
      headers: tokenHeaders(),
      body: JSON.stringify({
        host: appState.currentConfigHost,
        operation: "delete",
        name,
      }),
    });
    await loadProcesses();
  } catch (e) {
    alert(e.message);
  }
}
export function renderBulkTargets() {
  return `<div class="group"><h3>${tr("目标机器")}</h3><div class="hint">${tr("机器标识和机器列表不会参与同步。")}</div>${
    configurableHosts()
      .filter(
        (h) =>
          h.id !== appState.bulkSource &&
          h.config_contract ===
            appState.fleetHosts.find(
              (source) => source.id === appState.bulkSource,
            )?.config_contract,
      )
      .map(
        (h) =>
          `<label class="action-row"><input type="checkbox" data-bulk-target="${esc(h.id)}">${esc(hostLabel(h))}</label>`,
      )
      .join("") || pluginText("没有其他设备", "No other devices")
  }</div>`;
}
export function bulkValue(section, key, value) {
  const item = options[`${section}.${key}`]?.find(([v]) => v === String(value));
  return item ? tr(item[1]) : value;
}
export function renderBulkSync() {
  const groups = bulkSections
    .filter(
      (s) =>
        appState.bulkOriginal[s] &&
        Object.keys(appState.bulkOriginal[s]).length,
    )
    .map(
      (s) =>
        `<div class="group bulk-section"><label class="bulk-section-title"><input type="checkbox" data-bulk-section="${esc(s)}">${tr(sectionMeta[s]?.[0] || s)}</label><div class="bulk-items">${Object.entries(
          appState.bulkOriginal[s],
        )
          .map(
            ([k, v]) =>
              `<label class="bulk-item"><input type="checkbox" data-bulk-item="${esc(s)}.${esc(k)}"><span>${esc(tr(labels[`${s}.${k}`] || k))}<small class="bulk-value">${esc(bulkValue(s, k, v))}</small></span></label>`,
          )
          .join("")}</div></div>`,
    )
    .join("");
  return `<div class="group"><h3>${tr("来源机器")}</h3><div>${esc(hostLabel(appState.fleetHosts.find((h) => h.id === appState.bulkSource) || { id: appState.bulkSource }))}</div></div>${renderBulkTargets()}<div class="bulk-tools"><button id="bulkAll">${tr("全部选择")}</button><button id="bulkNone">${tr("全部取消")}</button><button id="bulkInvert">${tr("反选")}</button><span class="muted" id="bulkCount"></span></div><div><h3>${tr("配置项")}</h3>${groups}</div><div class="savebar"><button id="bulkApply">${tr("开始批量同步")}</button> <span id="bulkState" class="muted"></span></div>`;
}
export function updateBulkSelection() {
  document.querySelectorAll("[data-bulk-section]").forEach((parent) => {
    const items = [
      ...document.querySelectorAll(
        `[data-bulk-item^="${parent.dataset.bulkSection}."]`,
      ),
    ];
    parent.checked = items.length > 0 && items.every((x) => x.checked);
    parent.indeterminate = items.some((x) => x.checked) && !parent.checked;
  });
  const n = document.querySelectorAll("[data-bulk-item]:checked").length;
  if ($("bulkCount"))
    $("bulkCount").textContent =
      appState.LANG === "zh" ? `已选择 ${n} 项` : `${n} settings selected`;
}
export function bindBulkSync() {
  if (!$("bulkApply")) return;
  document.querySelectorAll("[data-bulk-section]").forEach(
    (x) =>
      (x.onchange = () => {
        document
          .querySelectorAll(`[data-bulk-item^="${x.dataset.bulkSection}."]`)
          .forEach((i) => (i.checked = x.checked));
        updateBulkSelection();
      }),
  );
  document
    .querySelectorAll("[data-bulk-item]")
    .forEach((x) => (x.onchange = updateBulkSelection));
  $("bulkAll").onclick = () => {
    document
      .querySelectorAll("[data-bulk-item]")
      .forEach((x) => (x.checked = true));
    updateBulkSelection();
  };
  $("bulkNone").onclick = () => {
    document
      .querySelectorAll("[data-bulk-item]")
      .forEach((x) => (x.checked = false));
    updateBulkSelection();
  };
  $("bulkInvert").onclick = () => {
    document
      .querySelectorAll("[data-bulk-item]")
      .forEach((x) => (x.checked = !x.checked));
    updateBulkSelection();
  };
  $("bulkApply").onclick = applyBulkConfig;
  updateBulkSelection();
}
export function updateConditional() {
  const alertMode =
    document.querySelector('[data-key="alert_mode"]')?.value || "breathe";
  document
    .querySelectorAll(".alert-flash")
    .forEach((e) => e.classList.toggle("hidden", alertMode !== "flash"));
  document
    .querySelectorAll(".alert-breathe")
    .forEach((e) => e.classList.toggle("hidden", alertMode !== "breathe"));
  const mode =
    document.querySelector('[data-section="led"][data-key="normal_mode"]')
      ?.value || "off";
  document
    .querySelectorAll(".normal-field")
    .forEach((x) =>
      x.classList.toggle("hidden", !x.dataset.modes.split(" ").includes(mode)),
    );
  updateSwatches();
}
export function updateSwatches() {
  document.querySelectorAll("[data-swatch]").forEach((s) => {
    const p = s.dataset.swatch,
      read = (c) =>
        Math.max(
          0,
          Math.min(
            255,
            Number(
              document.querySelector(
                `[data-section="led"][data-key="${p}_${c}"]`,
              )?.value || 0,
            ),
          ),
        ),
      hex =
        "#" +
        ["r", "g", "b"]
          .map((c) => Math.round(read(c)).toString(16).padStart(2, "0"))
          .join("");
    s.style.background = hex;
    const picker = document.querySelector(`[data-color-prefix="${p}"]`);
    if (picker) picker.value = hex;
  });
}
export function renderConfig() {
  const ss = sectionOrder.filter(
    (s) => appState.original[s] || s === "plugins",
  );
  $("configMenu").innerHTML = ss
    .map(
      (s, i) =>
        `<button class="${i === 0 ? "active" : ""}" data-config-section="${s}">${tr(sectionMeta[s]?.[0] || s)}</button>`,
    )
    .join("");
  $("configRows").innerHTML = ss
    .map(
      (s, i) =>
        `<section class="config-page ${i === 0 ? "active" : ""}" data-config-page="${s}"><h2>${tr(sectionMeta[s]?.[0] || s)}</h2><p class="muted">${tr(sectionMeta[s]?.[1] || "")}</p>${s === "bulk_sync" ? renderBulkSync() : s === "plugins" ? renderPlugins() : s === "services" ? renderServices() : s === "processes" ? renderProcesses() : s === "hosts" ? renderHosts(appState.original[s]) : renderGeneral(s, appState.original[s])}</section>`,
    )
    .join("");
  $("configMenu").onclick = (e) => {
    const b = e.target.closest("button");
    if (!b) return;
    document
      .querySelectorAll("[data-config-section]")
      .forEach((x) => x.classList.toggle("active", x === b));
    document
      .querySelectorAll("[data-config-page]")
      .forEach((x) =>
        x.classList.toggle(
          "active",
          x.dataset.configPage === b.dataset.configSection,
        ),
      );
    $("mainSavebar").classList.toggle(
      "hidden",
      ["bulk_sync", "plugins"].includes(b.dataset.configSection),
    );
    if (b.dataset.configSection === "services") loadServices();
    if (b.dataset.configSection === "processes") loadProcesses();
    if (b.dataset.configSection === "plugins") loadPlugins();
  };
  $("configRows").oninput = (e) => {
    if (e.target.matches("[data-color-prefix]")) {
      const p = e.target.dataset.colorPrefix,
        v = e.target.value;
      ["r", "g", "b"].forEach((c, i) => {
        document.querySelector(
          `[data-section="led"][data-key="${p}_${c}"]`,
        ).value = parseInt(v.slice(1 + i * 2, 3 + i * 2), 16);
      });
    }
    if (e.target.matches('[data-section="led"],[data-color-prefix]'))
      updateConditional();
    if (e.target.matches("[data-section]")) {
      if (e.target.dataset.section === "device")
        e.target.dataset.deviceAuto = "false";
      markChanged();
    }
  };
  $("refreshServices")?.addEventListener("click", loadServices);
  $("serviceSearch")?.addEventListener("input", renderServiceLists);
  $("saveMonitor")?.addEventListener("click", saveMonitor);
  $("resetMonitor")?.addEventListener("click", resetMonitorForm);
  $("saveProcess")?.addEventListener("click", saveProcess);
  $("resetProcess")?.addEventListener("click", resetProcessForm);
  $("saveHost")?.addEventListener("click", saveHost);
  document
    .querySelectorAll("[data-delete-host]")
    .forEach((b) => (b.onclick = () => deleteHost(b.dataset.deleteHost)));
  bindBulkSync();
  updateConditional();
  addStorageSettings();
}
export function markChanged() {
  let n = 0;
  document.querySelectorAll("#configRows [data-section]").forEach((i) => {
    if (
      (i.dataset.deviceAuto === "true" ? "auto" : i.value) !==
      appState.original[i.dataset.section][i.dataset.key]
    )
      n++;
  });
  $("saveState").textContent = n
    ? appState.LANG === "zh"
      ? `有 ${n} 项尚未保存`
      : `${n} unsaved changes`
    : tr("尚未修改");
  $("saveState").className = n ? "" : "muted";
}