import { css, html, LitElement } from "lit";
import { customElement, property, state } from "lit/decorators.js";
import { DataManager, ConnectionStatus } from "../data";
import { State, TimelineMessage } from "../types";
import "./sketch-container-status";

@customElement("sketch-view-mode-select")
export class SketchViewModeSelect extends LitElement {
  // Current active mode
  @property()
  activeMode: "chat" | "diff" | "charts" | "terminal" = "chat";
  // Header bar: view mode buttons

  // See https://lit.dev/docs/components/styles/ for how lit-element handles CSS.
  // Note that these styles only apply to the scope of this web component's
  // shadow DOM node, so they won't leak out or collide with CSS declared in
  // other components or the containing web page (...unless you want it to do that).

  static styles = css`
    /* View Mode Button Styles */
    .view-mode-buttons {
      display: flex;
      gap: 8px;
      margin-right: 10px;
    }

    .emoji-button {
      font-size: 18px;
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: white;
      border: 1px solid #ddd;
      border-radius: 4px;
      cursor: pointer;
      transition: all 0.2s ease;
      padding: 0;
      line-height: 1;
    }

    .emoji-button:hover {
      background-color: #f0f0f0;
      transform: translateY(-2px);
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .emoji-button.active {
      background-color: #e6f7ff;
      border-color: #1890ff;
      color: #1890ff;
    }
  `;

  constructor() {
    super();

    // Binding methods
    this._handleViewModeClick = this._handleViewModeClick.bind(this);
    this._handleUpdateActiveMode = this._handleUpdateActiveMode.bind(this);
  }

  // See https://lit.dev/docs/components/lifecycle/
  connectedCallback() {
    super.connectedCallback();

    // Listen for update-active-mode events
    this.addEventListener(
      "update-active-mode",
      this._handleUpdateActiveMode as EventListener,
    );
  }

  /**
   * Handle view mode button clicks
   */
  private _handleViewModeClick(mode: "chat" | "diff" | "charts" | "terminal") {
    // Dispatch a custom event to notify the app shell to change the view
    const event = new CustomEvent("view-mode-select", {
      detail: { mode },
      bubbles: true,
      composed: true,
    });
    this.dispatchEvent(event);
  }

  /**
   * Handle updates to the active mode
   */
  private _handleUpdateActiveMode(event: CustomEvent) {
    const { mode } = event.detail;
    if (mode) {
      this.activeMode = mode;
    }
  }

  // See https://lit.dev/docs/components/lifecycle/
  disconnectedCallback() {
    super.disconnectedCallback();

    // Remove event listeners
    this.removeEventListener(
      "update-active-mode",
      this._handleUpdateActiveMode as EventListener,
    );
  }

  render() {
    return html`
      <div class="view-mode-buttons">
        <button
          id="showConversationButton"
          class="emoji-button ${this.activeMode === "chat" ? "active" : ""}"
          title="Conversation View"
          @click=${() => this._handleViewModeClick("chat")}
        >
          💬
        </button>
        <button
          id="showDiffButton"
          class="emoji-button ${this.activeMode === "diff" ? "active" : ""}"
          title="Diff View"
          @click=${() => this._handleViewModeClick("diff")}
        >
          ±
        </button>
        <button
          id="showChartsButton"
          class="emoji-button ${this.activeMode === "charts" ? "active" : ""}"
          title="Charts View"
          @click=${() => this._handleViewModeClick("charts")}
        >
          📈
        </button>
        <button
          id="showTerminalButton"
          class="emoji-button ${this.activeMode === "terminal" ? "active" : ""}"
          title="Terminal View"
          @click=${() => this._handleViewModeClick("terminal")}
        >
          💻
        </button>
      </div>
    `;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    "sketch-view-mode-select": SketchViewModeSelect;
  }
}