Add custom device action to remove a Tasmota device

src/data/tasmota.ts

@@ -0,0 +1,10 @@
+import { HomeAssistant } from "../types";
+
+export const removeTasmotaDeviceEntry = (
+  hass: HomeAssistant,
+  deviceId: string
+): Promise<void> =>
+  hass.callWS({
+    type: "tasmota/device/remove",
+    device_id: deviceId,
+  });

src/panels/config/devices/device-detail/integration-elements/tasmota/ha-device-actions-tasmota.ts

@@ -0,0 +1,53 @@
+import {
+  CSSResult,
+  customElement,
+  html,
+  LitElement,
+  property,
+  TemplateResult,
+  css,
+} from "lit-element";
+import { DeviceRegistryEntry } from "../../../../../../data/device_registry";
+import { removeTasmotaDeviceEntry } from "../../../../../../data/tasmota";
+import { showConfirmationDialog } from "../../../../../../dialogs/generic/show-dialog-box";
+import { haStyle } from "../../../../../../resources/styles";
+import { HomeAssistant } from "../../../../../../types";
+
+@customElement("ha-device-actions-tasmota")
+export class HaDeviceActionsTasmota extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @property() public device!: DeviceRegistryEntry;
+
+  protected render(): TemplateResult {
+    return html`
+      <mwc-button class="warning" @click="${this._confirmDeleteEntry}">
+        ${this.hass.localize("ui.panel.config.devices.delete")}
+      </mwc-button>
+    `;
+  }
+
+  private async _confirmDeleteEntry(): Promise<void> {
+    const confirmed = await showConfirmationDialog(this, {
+      text: this.hass.localize("ui.panel.config.devices.confirm_delete"),
+    });
+
+    if (!confirmed) {
+      return;
+    }
+
+    await removeTasmotaDeviceEntry(this.hass!, this.device.id);
+  }
+
+  static get styles(): CSSResult[] {
+    return [
+      haStyle,
+      css`
+        :host {
+          display: flex;
+          justify-content: space-between;
+        }
+      `,
+    ];
+  }
+}

src/panels/config/devices/ha-config-device-page.ts

@@ -528,6 +528,19 @@ export class HaConfigDevicePage extends LitElement {
         </div>
       `);
     }
+    if (integrations.includes("tasmota")) {
+      import(
+        "./device-detail/integration-elements/tasmota/ha-device-actions-tasmota"
+      );
+      templates.push(html`
+        <div class="card-actions" slot="actions">
+          <ha-device-actions-tasmota
+            .hass=${this.hass}
+            .device=${device}
+          ></ha-device-actions-tasmota>
+        </div>
+      `);
+    }
     if (integrations.includes("zha")) {
       import("./device-detail/integration-elements/zha/ha-device-actions-zha");
       import("./device-detail/integration-elements/zha/ha-device-info-zha");