import NotiveElement, { customElement } from "../../element";
import h, { CreateElement } from "../../html";
import { ActiveCellSelection, RangeSelection } from "../../selection";
import "./index.css";

function getSelectedSubdivisionsCount(): number | undefined {
  const selection = window.notive.selection;

  if (!selection) return;

  if (selection instanceof ActiveCellSelection) {
    return 1;
  }

  if (!(selection instanceof RangeSelection)) return;

  const grid = window.notive.getGrid(selection.gridId);

  if (!grid) return;

  const selectedCells = selection.getSelectedCells(grid);

  return Math.min(...selectedCells.map((cells) => cells.length));
}

@customElement("ntv-toolbar")
class NotiveToolbarElement extends NotiveElement {
  #subdivisionsInputEl: HTMLInputElement = h.input({
    title: "Subdivisions",
    placeholder: "-",
    disabled: true,
  });

  connectedCallback() {
    this.#render();

    window.addEventListener("ntv:selectionchange", () => {
      if (window.notive.pendingSelection) {
        this.#subdivisionsInputEl.disabled = true;
        this.#subdivisionsInputEl.value = "";
        return;
      }

      const subdivisionsCount = getSelectedSubdivisionsCount();

      if (!subdivisionsCount) {
        this.#subdivisionsInputEl.disabled = true;
        this.#subdivisionsInputEl.value = "";
        return;
      }

      this.#subdivisionsInputEl.disabled = false;
      this.#subdivisionsInputEl.value = subdivisionsCount.toString();
    });

    this.#subdivisionsInputEl.addEventListener("change", () => {
      window.notive.subdivideSelection(
        parseInt(this.#subdivisionsInputEl.value),
      );
    });
  }

  #render() {
    this.append(
      h.section(
        h.button(
          {
            dataset: { variant: "icon" },
            onclick: () => {
              const subdivisions = Math.max(
                1,
                parseInt(this.#subdivisionsInputEl.value) - 1,
              );

              this.#subdivisionsInputEl.value = subdivisions.toString();
              window.notive.subdivideSelection(subdivisions);
            },
          },
          "-",
        ),
        this.#subdivisionsInputEl,
        h.button(
          {
            dataset: { variant: "icon" },

            onclick: () => {
              const subdivisions =
                parseInt(this.#subdivisionsInputEl.value) + 1;

              this.#subdivisionsInputEl.value = subdivisions.toString();
              window.notive.subdivideSelection(subdivisions);
            },
          },
          "+",
        ),
      ),
      h.section(
        h.button(
          {
            dataset: { variant: "menu" },
            onclick: () => {
              this.#play();
            },
          },
          "Play",
        ),
      ),
    );
  }

  async #play() {
    const Tone = await import("tone");
    await Tone.start();
    const transport = Tone.getTransport();
    transport.stop();
    transport.position = 0;
    transport.cancel();
    const synth = new Tone.Synth().toDestination();
    const seq = new Tone.Sequence(
      (time, note) => {
        synth.triggerAttackRelease(note, 0.1, time);
      },
      ["C4", "D4", "E4"],
      "1m",
    ).start(0);
    seq.loop = false;
    transport.start();
  }
}

export default NotiveToolbarElement.makeFactory();