import "@material/mwc-button/mwc-button";
import {
  css,
  CSSResult,
  customElement,
  html,
  internalProperty,
  LitElement,
  property,
  TemplateResult,
} from "lit-element";
import { fireEvent } from "../common/dom/fire_event";
import { LocalizeFunc } from "../common/translations/localize";
import "../components/ha-analytics";
import { analyticsLearnMore } from "../components/ha-analytics-learn-more";
import { Analytics, setAnalyticsPreferences } from "../data/analytics";
import { onboardAnalyticsStep } from "../data/onboarding";
import type { HomeAssistant } from "../types";

@customElement("onboarding-analytics")
class OnboardingAnalytics extends LitElement {
  @property({ attribute: false }) public hass!: HomeAssistant;

  @property() public localize!: LocalizeFunc;

  @internalProperty() private _error?: string;

  @internalProperty() private _analyticsDetails: Analytics = {
    preferences: {},
  };

  protected render(): TemplateResult {
    return html`
      <p>
        Share anonymized information from your installation to help make Home
        Assistant better and help us convince manufacturers to add local control
        and privacy-focused features.
      </p>
      <ha-analytics
        @analytics-preferences-changed=${this._preferencesChanged}
        .hass=${this.hass}
        .analytics=${this._analyticsDetails}
      >
      </ha-analytics>
      ${this._error ? html`<div class="error">${this._error}</div>` : ""}
      <div class="footer">
        <mwc-button @click=${this._save} .disabled=${!this._analyticsDetails}>
          ${this.localize("ui.panel.page-onboarding.analytics.finish")}
        </mwc-button>
        ${analyticsLearnMore(this.hass)}
      </div>
    `;
  }

  protected firstUpdated(changedProps) {
    super.firstUpdated(changedProps);
    this.addEventListener("keypress", (ev) => {
      if (ev.keyCode === 13) {
        this._save(ev);
      }
    });
  }

  private _preferencesChanged(event: CustomEvent): void {
    this._analyticsDetails = {
      ...this._analyticsDetails!,
      preferences: event.detail.preferences,
    };
  }

  private async _save(ev) {
    ev.preventDefault();
    try {
      await setAnalyticsPreferences(
        this.hass,
        this._analyticsDetails!.preferences
      );

      await onboardAnalyticsStep(this.hass);
      fireEvent(this, "onboarding-step", {
        type: "analytics",
      });
    } catch (err) {
      alert(`Failed to save: ${err.message}`);
    }
  }

  static get styles(): CSSResult {
    return css`
      .error {
        color: var(--error-color);
      }

      .footer {
        margin-top: 16px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-direction: row-reverse;
      }

      a {
        color: var(--primary-color);
      }
    `;

    // footer is direction reverse to tab to "NEXT" first
  }
}

declare global {
  interface HTMLElementTagNameMap {
    "onboarding-analytics": OnboardingAnalytics;
  }
}