import { css, html, LitElement, nothing } from "lit";
import { customElement, state } from "lit/decorators";
import type { HomeAssistant } from "../../../types";
import type { LovelaceRow, SectionConfig } from "../entity-rows/types";

@customElement("hui-section-row")
class HuiSectionRow extends LitElement implements LovelaceRow {
  public hass?: HomeAssistant;

  @state() private _config?: SectionConfig;

  public setConfig(config: SectionConfig): void {
    if (!config) {
      throw new Error("Invalid configuration");
    }

    this._config = config;
  }

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

    return html`
      <div class="divider"></div>
      ${
        this._config.label
          ? html`
              <div class="label" .title=${this._config.label}>
                ${this._config.label}
              </div>
            `
          : nothing
      }
    `;
  }

  static styles = css`
    .label {
      color: var(--section-header-text-color, var(--primary-text-color));
      margin-left: 8px;
      margin-inline-start: 8px;
      margin-inline-end: initial;
      margin-bottom: 8px;
      margin-top: 16px;
      font-weight: var(--ha-font-weight-medium);
    }
    .divider {
      height: 1px;
      background-color: var(--entities-divider-color, var(--divider-color));
      margin-left: -16px;
      margin-right: -16px;
      margin-inline-start: -16px;
      margin-inline-end: -16px;
      margin-top: 8px;
    }
  `;
}

declare global {
  interface HTMLElementTagNameMap {
    "hui-section-row": HuiSectionRow;
  }
}
