// --- BEGIN UNIFI THEME ---
// UniFi-style device detail page.
// This file REPLACES device-page.ts in the router without modifying the
// original, preserving upstream merge-friendliness.
// All TR-069 parameter rendering is delegated to the original device-page
// component; this wrapper adds the UniFi header/action-bar on top.

import { ClosureComponent, Children } from "mithril";
import { m } from "./components.ts";
import { icon } from "./tailwind-utility-components.ts";
import { device as deviceConfig } from "./config.ts";
import * as store from "./store.ts";
import * as notifications from "./notifications.ts";
import { queueTask } from "./task-queue.ts";
import Expression from "../lib/common/expression.ts";
import Path from "../lib/common/path.ts";
import {
  statusBadge,
  getDeviceStatus,
  getDeviceName,
  getDeviceModel,
  getParam,
  timeAgo,
} from "./unifi-components.ts";

export function init(
  args: Record<string, unknown>,
): Promise<Record<string, unknown>> {
  if (!window.authorizer.hasAccess("devices", 2)) {
    return Promise.reject(
      new Error("You are not authorized to view this page"),
    );
  }

  return Promise.resolve({
    deviceId: args.id,
    deviceFilter: new Expression.Binary(
      "=",
      new Expression.Parameter(Path.parse("DeviceID.ID")),
      new Expression.Literal(args.id as string),
    ),
  });
}

interface Attrs {
  deviceId: string;
  deviceFilter: Expression;
}

// ─── KV pair helper ────────────────────────────────────────────────────────

function kv(label: string, value: string | null): Children {
  return m("div", [
    m("div.unifi-detail-kv__label", label),
    m(
      `div.unifi-detail-kv__value${value == null ? ".empty" : ""}`,
      value ?? "—",
    ),
  ]);
}

// ─── Action helper ─────────────────────────────────────────────────────────

function actionBtn(
  label: string,
  className: string,
  disabled: boolean,
  onClick: () => void,
): Children {
  return m(
    `button.unifi-btn.${className}`,
    { disabled, onclick: onClick },
    label,
  );
}

// ─── Component ─────────────────────────────────────────────────────────────

export const component: ClosureComponent<Attrs> = () => {
  let actionsPending = false;

  return {
    view: (vnode) => {
      const deviceId = vnode.attrs.deviceId;
      document.title = `${deviceId} — Devices — GenieACS`;

      const dev = store.fetch("devices", vnode.attrs.deviceFilter);

      // While loading
      if (!dev.value || !dev.value.length) {
        if (!dev.fulfilling) {
          return m(
            "p",
            { style: "color:#e53935;font-weight:bold;" },
            `No such device: ${deviceId}`,
          );
        }
        return m("loading", { queries: [dev] }, m("div", { style: "height:100px" }));
      }

      const device = dev.value[0];
      const status = getDeviceStatus(device);
      const name = getDeviceName(device);
      const model = getDeviceModel(device);
      const lastInform = device["_lastInform"] as number | undefined;
      const canWrite = window.authorizer.hasAccess("devices", 3);

      // Key TR-069 fields
      const serial =
        getParam(device, "DeviceID.SerialNumber") ??
        getParam(
          device,
          "InternetGatewayDevice.DeviceInfo.SerialNumber",
          "Device.DeviceInfo.SerialNumber",
        );
      const firmware = getParam(
        device,
        "InternetGatewayDevice.DeviceInfo.SoftwareVersion",
        "Device.DeviceInfo.SoftwareVersion",
      );
      const wanIp = getParam(
        device,
        "InternetGatewayDevice.WANDevice.1.WANConnectionDevice.1.WANIPConnection.1.ExternalIPAddress",
        "InternetGatewayDevice.WANDevice.1.WANConnectionDevice.1.WANPPPConnection.1.ExternalIPAddress",
        "Device.IP.Interface.1.IPv4Address.1.IPAddress",
      );
      const ssid = getParam(
        device,
        "InternetGatewayDevice.LANDevice.1.WLANConfiguration.1.SSID",
        "Device.WiFi.SSID.1.SSID",
      );
      const hardwareVersion = getParam(
        device,
        "InternetGatewayDevice.DeviceInfo.HardwareVersion",
        "Device.DeviceInfo.HardwareVersion",
      );
      const uptime = getParam(
        device,
        "InternetGatewayDevice.DeviceInfo.UpTime",
        "Device.DeviceInfo.UpTime",
      );

      // ── Router icon ────────────────────────────────────────────────────
      const routerIcon = m(
        "div.unifi-device-detail-header__icon",
        m(icon, { name: "nav-devices", class: "h-7 w-7" }),
      );

      // ── Header bar ─────────────────────────────────────────────────────
      const header = m("div.unifi-device-detail-header", [
        // Back link
        m(
          "a.unifi-back-link",
          { href: "#!/devices" },
          m(icon, { name: "nav-back", class: "h-4 w-4" }),
          " Back to Devices",
        ),

        m("div.unifi-device-detail-header__top", [
          routerIcon,
          m("div.unifi-device-detail-header__info", [
            m("h1.unifi-device-detail-header__name", name),
            m("div.unifi-device-detail-header__meta", [
              m(statusBadge, { status }),
              model && m("span", model),
              serial && m("span", `S/N: ${serial}`),
              lastInform &&
                m(
                  "span",
                  { title: new Date(lastInform).toLocaleString() },
                  `Last seen: ${timeAgo(lastInform)}`,
                ),
            ]),
          ]),
          // Actions
          canWrite &&
            m("div.unifi-device-detail-header__actions", [
              actionBtn(
                "Reboot",
                "unifi-btn--secondary",
                actionsPending,
                () => {
                  actionsPending = true;
                  queueTask({ name: "reboot", device: deviceId });
                  notifications.push(
                    "success",
                    `Reboot task queued for ${name}`,
                  );
                  setTimeout(() => {
                    actionsPending = false;
                    m.redraw();
                  }, 2000);
                },
              ),
              actionBtn(
                "Factory Reset",
                "unifi-btn--danger",
                actionsPending,
                () => {
                  if (
                    !confirm(
                      `Factory reset ${name}? This will erase all configuration.`,
                    )
                  )
                    return;
                  actionsPending = true;
                  queueTask({ name: "factoryReset", device: deviceId });
                  notifications.push(
                    "success",
                    `Factory reset task queued for ${name}`,
                  );
                  setTimeout(() => {
                    actionsPending = false;
                    m.redraw();
                  }, 2000);
                },
              ),
              actionBtn(
                "Refresh",
                "unifi-btn--secondary",
                actionsPending,
                () => {
                  actionsPending = true;
                  store.setTimestamp(Date.now());
                  setTimeout(() => {
                    actionsPending = false;
                    m.redraw();
                  }, 1500);
                },
              ),
            ]),
        ]),

        // Key-value grid
        m("div.unifi-device-detail-header__kv", [
          kv("WAN IP", wanIp),
          kv("WiFi SSID", ssid),
          kv("Firmware", firmware),
          kv("Hardware", hardwareVersion),
          uptime != null &&
            kv(
              "Uptime",
              (() => {
                const s = Number(uptime);
                if (isNaN(s)) return uptime;
                const d = Math.floor(s / 86400);
                const h = Math.floor((s % 86400) / 3600);
                const m2 = Math.floor((s % 3600) / 60);
                return [d && `${d}d`, h && `${h}h`, `${m2}m`]
                  .filter(Boolean)
                  .join(" ");
              })(),
            ),
          kv("Device ID", deviceId),
        ]),
      ]);

      // ── Original device-page content (all configured panels) ────────────
      const conf = deviceConfig;
      const cmps = [];
      for (const c of Object.values(conf)) {
        cmps.push(
          m.context(
            { device: dev.value[0], deviceQuery: dev },
            store.evaluateExpression(c["type"], {}).value as string,
            c as any,
          ),
        );
      }

      const content = m("div.unifi-device-content", [
        m("div.device-page", cmps),
      ]);

      return m("div", [header, content]);
    },
  };
};
// --- END UNIFI THEME ---