import type { PropertyValues } from "lit";
import { LitElement, css, html, nothing } from "lit";
import { customElement, property, state } from "lit/decorators";
import type { HomeAssistant } from "../../../types";
import type { EntitiesCardEntityConfig } from "../cards/types";
import { hasConfigOrEntityChanged } from "../common/has-changed";
import "../components/hui-generic-entity-row";
import "../components/hui-timestamp-display";
import { createEntityNotFoundWarning } from "../components/hui-warning";
import type { LovelaceRow } from "./types";
import { TIMESTAMP_STATE_DOMAINS } from "../../../common/const";
import { UNAVAILABLE, UNKNOWN } from "../../../data/entity/entity";
import { computeDomain } from "../../../common/entity/compute_domain";

@customElement("hui-simple-entity-row")
class HuiSimpleEntityRow extends LitElement implements LovelaceRow {
  @property({ attribute: false }) public hass?: HomeAssistant;

  @state() private _config?: EntitiesCardEntityConfig;

  public setConfig(config: EntitiesCardEntityConfig): void {
    if (!config) {
      throw new Error("Invalid configuration");
    }
    this._config = config;
  }

  protected shouldUpdate(changedProps: PropertyValues<this>): boolean {
    return hasConfigOrEntityChanged(this, changedProps);
  }

  protected render() {
    if (!this._config || !this.hass) {
      return nothing;
    }

    const stateObj = this.hass.states[this._config.entity];

    if (!stateObj) {
      return html`
        <hui-warning .hass=${this.hass}>
          ${createEntityNotFoundWarning(this.hass, this._config.entity)}
        </hui-warning>
      `;
    }

    return html`
      <hui-generic-entity-row .hass=${this.hass} .config=${this._config}>
        ${
          TIMESTAMP_STATE_DOMAINS.has(computeDomain(this._config.entity)) &&
          stateObj.state !== UNAVAILABLE &&
          stateObj.state !== UNKNOWN
            ? html`
                <hui-timestamp-display
                  .hass=${this.hass}
                  .ts=${new Date(stateObj.state)}
                  .format=${this._config.time_format}
                  capitalize
                ></hui-timestamp-display>
              `
            : this.hass.formatEntityState(stateObj)
        }
      </hui-generic-entity-row>
    `;
  }

  static styles = css`
    div {
      text-align: right;
    }
  `;
}

declare global {
  interface HTMLElementTagNameMap {
    "hui-simple-entity-row": HuiSimpleEntityRow;
  }
}
