import { describe, expect, test } from "bun:test";
import { createInitialAppState } from "@editor/initial-state";
import {
  commandPaletteCloseCommand,
  commandPaletteOpenCommand,
  commandPaletteSetQueryCommand,
  commandPaletteSetSelectedIndexCommand,
} from "./palette";

describe("command palette commands", () => {
  test("opens with a reset query and selection", () => {
    const initial = commandPaletteSetQueryCommand.execute({ state: createInitialAppState("Test") }, { query: "brush" });
    const next = commandPaletteOpenCommand.execute({ state: initial }, undefined);

    expect(next.editor.commandPalette).toEqual({ open: true, query: "", selectedIndex: 0 });
  });

  test("sets query and returns selected item to the first result", () => {
    const opened = commandPaletteOpenCommand.execute({ state: createInitialAppState("Test") }, { query: "layer", selectedIndex: 4 });
    const next = commandPaletteSetQueryCommand.execute({ state: opened }, { query: "zoom" });

    expect(next.editor.commandPalette).toEqual({ open: true, query: "zoom", selectedIndex: 0 });
  });

  test("clamps selected index to a non-negative integer", () => {
    const opened = commandPaletteOpenCommand.execute({ state: createInitialAppState("Test") }, undefined);
    const fractional = commandPaletteSetSelectedIndexCommand.execute({ state: opened }, { selectedIndex: 3.8 });
    const negative = commandPaletteSetSelectedIndexCommand.execute({ state: opened }, { selectedIndex: -1 });

    expect(fractional.editor.commandPalette.selectedIndex).toBe(3);
    expect(negative.editor.commandPalette.selectedIndex).toBe(0);
  });

  test("closes and clears transient palette text", () => {
    const opened = commandPaletteOpenCommand.execute({ state: createInitialAppState("Test") }, { query: "debug", selectedIndex: 2 });
    const next = commandPaletteCloseCommand.execute({ state: opened }, undefined);

    expect(next.editor.commandPalette).toEqual({ open: false, query: "", selectedIndex: 0 });
  });
});