// @vitest-environment happy-dom
import { afterEach, describe, expect, it, vi } from "vitest";

import { createSpawnForm, type SpawnFormHandle } from "./spawnForm.js";

function stubApi(): RequestInit[] {
  const sessionRequests: RequestInit[] = [];
  vi.stubGlobal(
    "fetch",
    vi.fn(async (input: RequestInfo | URL, init?: RequestInit) => {
      const url = String(input);
      if (url.includes("/api/sessions") && init?.method === "POST") {
        sessionRequests.push(init);
        return new Response(JSON.stringify({ id: "s1", command: "claude", cwd: "/srv/work" }), {
          status: 200,
        });
      }
      if (url.includes("/api/info")) {
        return new Response(
          JSON.stringify({ hostname: "h", version: "0", home_dir: "/home/user" }),
          { status: 200 },
        );
      }
      if (url.includes("/api/names")) {
        return new Response(JSON.stringify({ names: ["amber-fox"] }), { status: 200 });
      }
      return new Response(JSON.stringify([]), { status: 200 });
    }),
  );
  return sessionRequests;
}

describe("spawn form structured view", () => {
  let handle: SpawnFormHandle | null = null;

  async function drain(): Promise<void> {
    for (let i = 0; i < 20; i++) await Promise.resolve();
  }

  afterEach(async () => {
    handle?.destroy();
    handle = null;
    await drain();
    vi.unstubAllGlobals();
  });

  it("is default-on and shown for resolved Claude Code and Codex commands", async () => {
    stubApi();
    handle = createSpawnForm({ onSuccess() {} });
    document.body.appendChild(handle.el);
    await drain();

    const wrap = handle.el.querySelector<HTMLElement>(".structured-view")!;
    const checkbox = wrap.querySelector<HTMLInputElement>("input")!;
    const disclosure = handle.el.querySelector<HTMLElement>(".wt-collapsible")!;
    expect(disclosure.hidden).toBe(true);
    handle.el.querySelector<HTMLButtonElement>(".wt-toggle")!.click();
    expect(disclosure.hidden).toBe(false);
    expect(wrap.hidden).toBe(false);
    expect(checkbox.checked).toBe(true);

    const custom = handle.el.querySelector<HTMLButtonElement>('[data-id="custom"]')!;
    custom.click();
    const command = handle.el.querySelector<HTMLInputElement>(".cmd-raw")!;
    command.value = "FOO=1 /usr/local/bin/codex";
    command.dispatchEvent(new Event("input"));
    expect(wrap.hidden).toBe(false);
    expect(checkbox.checked).toBe(true);

    command.value = "opencode";
    command.dispatchEvent(new Event("input"));
    expect(wrap.hidden).toBe(true);
    expect(checkbox.checked).toBe(false);
  });

  it("keeps an unchecked box unchecked across a command change", async () => {
    stubApi();
    handle = createSpawnForm({ onSuccess() {} });
    document.body.appendChild(handle.el);
    await drain();

    const checkbox = handle.el.querySelector<HTMLInputElement>("input[name=structured_view]")!;
    expect(checkbox.checked).toBe(true);
    checkbox.click();
    expect(checkbox.checked).toBe(false);

    handle.el.querySelector<HTMLButtonElement>('[data-id="custom"]')!.click();
    const command = handle.el.querySelector<HTMLInputElement>(".cmd-raw")!;
    command.value = "codex";
    command.dispatchEvent(new Event("input"));

    expect(checkbox.checked).toBe(false);
  });

  it("clears the checked default when Codex changes to an unsupported command", async () => {
    stubApi();
    handle = createSpawnForm({ onSuccess() {} });
    document.body.appendChild(handle.el);
    await drain();

    handle.el.querySelector<HTMLButtonElement>('[data-id="custom"]')!.click();
    const command = handle.el.querySelector<HTMLInputElement>(".cmd-raw")!;
    command.value = "env -i codex";
    command.dispatchEvent(new Event("input"));

    const checkbox = handle.el.querySelector<HTMLInputElement>("input[name=structured_view]")!;
    expect(checkbox.checked).toBe(true);

    command.value = "opencode";
    command.dispatchEvent(new Event("input"));

    expect(checkbox.closest<HTMLElement>(".structured-view")!.hidden).toBe(true);
    expect(checkbox.checked).toBe(false);
  });

  it.each(["claude", "codex"])("emits Structured for a %s command by default", async (tool) => {
    const requests = stubApi();
    handle = createSpawnForm({
      seed: { cwd: "/srv/work", cwdRawVisible: true, worktreeEnabled: false },
      onSuccess() {},
    });
    document.body.appendChild(handle.el);
    await drain();

    if (tool === "codex") {
      handle.el.querySelector<HTMLButtonElement>('[data-id="custom"]')!.click();
      const command = handle.el.querySelector<HTMLInputElement>(".cmd-raw")!;
      command.value = "codex";
      command.dispatchEvent(new Event("input"));
    }

    handle.el.requestSubmit();
    await drain();

    expect(requests).toHaveLength(1);
    expect(JSON.parse(String(requests[0].body))).toMatchObject({
      command: tool,
      view: "Structured",
    });
  });

  it("emits no view once the operator unticks the box", async () => {
    const requests = stubApi();
    handle = createSpawnForm({
      seed: { cwd: "/srv/work", cwdRawVisible: true, worktreeEnabled: false },
      onSuccess() {},
    });
    document.body.appendChild(handle.el);
    await drain();

    handle.el.querySelector<HTMLInputElement>("input[name=structured_view]")!.click();
    handle.el.requestSubmit();
    await drain();

    expect(requests).toHaveLength(1);
    expect(JSON.parse(String(requests[0].body)).view).toBeUndefined();
  });
});