From 2aa7b95a5a069fd6ae9c142d156e419aa0c9243b Mon Sep 17 00:00:00 2001
From: Paulus Schoutsen <balloob@gmail.com>
Date: Mon, 21 Nov 2022 12:39:22 -0500
Subject: [PATCH] Device info: Show connected devices (#14421)

---
 .../ha-device-via-devices-card.ts             | 124 ++++++++++++++++++
 .../config/devices/ha-config-device-page.ts   |   6 +
 src/translations/en.json                      |   4 +
 3 files changed, 134 insertions(+)
 create mode 100644 src/panels/config/devices/device-detail/ha-device-via-devices-card.ts

diff --git a/src/panels/config/devices/device-detail/ha-device-via-devices-card.ts b/src/panels/config/devices/device-detail/ha-device-via-devices-card.ts
new file mode 100644
index 0000000000..3a0c276d6f
--- /dev/null
+++ b/src/panels/config/devices/device-detail/ha-device-via-devices-card.ts
@@ -0,0 +1,124 @@
+import "@material/mwc-list/mwc-list-item";
+import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
+import { customElement, property, state } from "lit/decorators";
+import memoizeOne from "memoize-one";
+import { caseInsensitiveStringCompare } from "../../../../common/string/compare";
+import "../../../../components/ha-card";
+import "../../../../components/ha-icon-next";
+import {
+  computeDeviceName,
+  DeviceRegistryEntry,
+} from "../../../../data/device_registry";
+import type { HomeAssistant } from "../../../../types";
+
+const MAX_VISIBLE_VIA_DEVICES = 10;
+
+@customElement("ha-device-via-devices-card")
+export class HaDeviceViaDevicesCard extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @property() public deviceId!: string;
+
+  @state() public _showAll = false;
+
+  private _viaDevices = memoizeOne(
+    (
+      deviceId: string,
+      devices: Record<string, DeviceRegistryEntry>
+    ): DeviceRegistryEntry[] =>
+      Object.values(devices)
+        .filter((device) => device.via_device_id === deviceId)
+        .sort((d1, d2) =>
+          caseInsensitiveStringCompare(
+            computeDeviceName(d1, this.hass),
+            computeDeviceName(d2, this.hass)
+          )
+        )
+  );
+
+  protected render(): TemplateResult {
+    const viaDevices = this._viaDevices(this.deviceId, this.hass.devices);
+
+    if (viaDevices.length === 0) {
+      return html``;
+    }
+
+    return html`
+      <ha-card>
+        <h1 class="card-header">
+          ${this.hass.localize(
+            "ui.panel.config.devices.connected_devices.heading"
+          )}
+        </h1>
+        ${(this._showAll
+          ? viaDevices
+          : viaDevices.slice(0, MAX_VISIBLE_VIA_DEVICES)
+        ).map(
+          (viaDevice) => html`
+            <a href=${`/config/devices/device/${viaDevice.id}`}>
+              <mwc-list-item hasMeta>
+                ${computeDeviceName(viaDevice, this.hass)}
+                <ha-icon-next slot="meta"></ha-icon-next>
+              </mwc-list-item>
+            </a>
+          `
+        )}
+        ${!this._showAll && viaDevices.length > MAX_VISIBLE_VIA_DEVICES
+          ? html`
+              <button class="show-more" @click=${this._toggleShowAll}>
+                ${this.hass.localize(
+                  "ui.panel.config.devices.connected_devices.show_more",
+                  "count",
+                  viaDevices.length - MAX_VISIBLE_VIA_DEVICES
+                )}
+              </button>
+            `
+          : ""}
+      </ha-card>
+    `;
+  }
+
+  private _toggleShowAll() {
+    this._showAll = !this._showAll;
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      :host {
+        display: block;
+      }
+
+      .card-header {
+        padding-bottom: 0;
+      }
+
+      a {
+        text-decoration: none;
+        color: var(--primary-text-color);
+      }
+
+      button.show-more {
+        color: var(--primary-color);
+        text-align: left;
+        cursor: pointer;
+        background: none;
+        border-width: initial;
+        border-style: none;
+        border-color: initial;
+        border-image: initial;
+        padding: 16px;
+        font: inherit;
+      }
+      button.show-more:focus {
+        outline: none;
+        text-decoration: underline;
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-device-via-devices-card": HaDeviceViaDevicesCard;
+  }
+}
diff --git a/src/panels/config/devices/ha-config-device-page.ts b/src/panels/config/devices/ha-config-device-page.ts
index 2e6fd4f8b4..9f184d3d12 100644
--- a/src/panels/config/devices/ha-config-device-page.ts
+++ b/src/panels/config/devices/ha-config-device-page.ts
@@ -7,6 +7,7 @@ import {
   mdiPencil,
   mdiPlusCircle,
 } from "@mdi/js";
+import "@material/mwc-list/mwc-list-item";
 import "@polymer/paper-tooltip/paper-tooltip";
 import { css, CSSResultGroup, html, LitElement, TemplateResult } from "lit";
 import { customElement, property, state } from "lit/decorators";
@@ -67,6 +68,7 @@ import "../../logbook/ha-logbook";
 import "../ha-config-section";
 import "./device-detail/ha-device-entities-card";
 import "./device-detail/ha-device-info-card";
+import "./device-detail/ha-device-via-devices-card";
 import { showDeviceAutomationDialog } from "./device-detail/show-dialog-device-automation";
 import {
   loadDeviceRegistryDetailDialog,
@@ -825,6 +827,10 @@ export class HaConfigDevicePage extends LitElement {
                     `
                   : ""
             )}
+            <ha-device-via-devices-card
+              .hass=${this.hass}
+              .deviceId=${this.deviceId}
+            ></ha-device-via-devices-card>
           </div>
           <div class="column">
             ${this.narrow ? [automationCard, sceneCard, scriptCard] : ""}
diff --git a/src/translations/en.json b/src/translations/en.json
index 2c283f2c73..f46100b1b2 100755
--- a/src/translations/en.json
+++ b/src/translations/en.json
@@ -2689,6 +2689,10 @@
           "download_diagnostics_integration": "Download {integration} diagnostics",
           "delete_device": "Delete",
           "delete_device_integration": "Remove device from {integration}",
+          "connected_devices": {
+            "heading": "Connected devices",
+            "show_more": "+{count} devices not shown"
+          },
           "type": {
             "device_heading": "Device",
             "device": "device",