import { ApiService } from "./ApiService.js";
import { DialogManager } from "./DialogManager.js";
import { throttle, createStyledElement } from "./utils.js";

export class BarControlSystem {
  constructor() {
    this.settings = {};
    this.websockets = {};
    this.init();
  }

  async init() {
    await this.loadSettings();
    this.createControlPanel();
    this.renderColorPickers();
  }

  async loadSettings() {
    this.settings = await ApiService.loadSettings();
  }

  createControlPanel() {
    const panel = createStyledElement("div", {
      position: "fixed",
      top: "10px",
      right: "10px",
      padding: "15px",
      border: "2px solid #333",
      borderRadius: "8px",
      backgroundColor: "#f0f0f0",
      zIndex: "1000",
    });
    panel.id = "control-panel";

    const title = createStyledElement(
      "h3",
      {
        margin: "0 0 10px 0",
        fontFamily: "Arial, sans-serif",
      },
      { textContent: "Control Panel" },
    );

    const buttonStyles = {
      padding: "8px 12px",
      border: "none",
      borderRadius: "4px",
      cursor: "pointer",
      color: "white",
    };

    const createButton = createStyledElement(
      "button",
      {
        ...buttonStyles,
        marginRight: "10px",
        backgroundColor: "#4CAF50",
      },
      { textContent: "Create New Bar" },
    );

    const refreshButton = createStyledElement(
      "button",
      {
        ...buttonStyles,
        backgroundColor: "#2196F3",
      },
      { textContent: "Refresh" },
    );

    createButton.onclick = () => this.showCreateDialog();
    refreshButton.onclick = () => this.refresh();

    panel.append(title, createButton, refreshButton);
    document.body.appendChild(panel);
  }

  showCreateDialog() {
    DialogManager.showCreateDialog((barData) => this.createBar(barData));
  }

  async createBar(barData) {
    if (!barData.barId) {
      alert("Bar ID is required");
      return;
    }

    try {
      await ApiService.createBar(barData);
      console.log(`Bar created: ${barData.barId}`);
      await this.refresh();
    } catch (error) {
      console.error("Failed to create bar:", error);
      alert(error.message || "Failed to create bar");
    }
  }

  async deleteBar(barId) {
    if (!confirm(`Are you sure you want to delete bar ${barId}?`)) {
      return;
    }

    try {
      await ApiService.deleteBar(barId);
      console.log(`Bar deleted: ${barId}`);
      await this.refresh();
    } catch (error) {
      console.error("Failed to delete bar:", error);
      alert(error.message || "Failed to delete bar");
    }
  }

  async refresh() {
    // Close existing websockets
    Object.values(this.websockets).forEach((ws) => {
      if (ws && ws.readyState === WebSocket.OPEN) {
        ws.close();
      }
    });

    // Remove existing color pickers
    Object.keys(this.settings).forEach((barId) => {
      const form = document.getElementById("color_form_" + barId);
      if (form) {
        form.remove();
      }
    });

    this.websockets = {};
    await this.loadSettings();
    this.renderColorPickers();
  }

  renderColorPickers() {
    Object.keys(this.settings).forEach((barId) => {
      const config = this.settings[barId];
      this.createColorPicker(barId, config);
    });
  }

  makeDraggable(element, barId) {
    let isDragging = false;
    let startX, startY, initialX, initialY;

    element.addEventListener("mousedown", (e) => {
      if (e.target.tagName === "BUTTON") return;

      isDragging = true;
      startX = e.clientX;
      startY = e.clientY;

      const rect = element.getBoundingClientRect();
      initialX = rect.left;
      initialY = rect.top;

      element.style.cursor = "move";
      e.preventDefault();
    });

    document.addEventListener("mousemove", (e) => {
      if (!isDragging) return;

      const deltaX = e.clientX - startX;
      const deltaY = e.clientY - startY;

      const newX = initialX + deltaX;
      const newY = initialY + deltaY;

      element.style.left = newX + "px";
      element.style.top = newY + "px";
    });

    document.addEventListener("mouseup", () => {
      if (isDragging) {
        const rect = element.getBoundingClientRect();
        ApiService.savePosition(barId, rect.left, rect.top);
        element.style.cursor = "default";
      }
      isDragging = false;
    });
  }

  createColorPicker(barId, config) {
    const ws = new WebSocket(config["url"]);
    this.websockets[barId] = ws;

    const form = createStyledElement("form", {
      position: "absolute",
      left: config["x"] + "px",
      top: config["y"] + "px",
      padding: "10px",
      border: "1px solid #ccc",
      borderRadius: "5px",
      backgroundColor: "white",
    });
    form.id = "color_form_" + barId;

    const label = createStyledElement(
      "label",
      {
        display: "block",
        marginBottom: "5px",
        fontFamily: "Arial, sans-serif",
        fontSize: "14px",
      },
      {
        htmlFor: "color_input_" + barId,
        textContent: barId,
      },
    );

    const colorInput = createStyledElement(
      "input",
      {},
      {
        type: "color",
        id: "color_input_" + barId,
        name: barId,
        value: config["color"],
      },
    );

    const deleteButton = createStyledElement(
      "button",
      {
        position: "absolute",
        top: "2px",
        right: "2px",
        width: "20px",
        height: "20px",
        backgroundColor: "#f44336",
        color: "white",
        border: "none",
        borderRadius: "50%",
        cursor: "pointer",
        fontSize: "12px",
        lineHeight: "1",
      },
      {
        type: "button",
        textContent: "×",
      },
    );

    deleteButton.onclick = () => this.deleteBar(barId);

    const throttledColorHandler = throttle((event) => {
      const color = event.target.value;
      console.log(`Color selected for ${barId}: ${color}`);

      ApiService.saveColor(barId, color);

      if (ws.readyState === WebSocket.OPEN) {
        const message = { color1: color };
        ws.send(JSON.stringify(message));
      } else {
        console.warn(
          `WebSocket not ready for ${barId}. ReadyState: ${ws.readyState}`,
        );
      }
    }, 500);

    colorInput.addEventListener("input", throttledColorHandler);

    form.append(label, colorInput, deleteButton);
    document.body.appendChild(form);

    this.makeDraggable(form, barId);
  }
}