import { defineComponent, onScopeDispose } from "vue";
import { expect, test } from "vite-plus/test";
import { render } from "@vue-tui/testing";
import { Text, useExit } from "@vue-tui/runtime";

test("useExit() triggers teardown and waitUntilExit resolves", async () => {
  let exitFn!: () => void;
  let disposed = false;

  const App = defineComponent(() => {
    const exit = useExit();
    exitFn = exit;
    onScopeDispose(() => {
      disposed = true;
    });
    return () => <Text>running</Text>;
  });

  const { lastFrame, waitUntilExit } = await render(App);
  expect(lastFrame()).toContain("running");

  exitFn();
  await waitUntilExit();
  expect(disposed).toBe(true);
});

test("exit(error) rejects waitUntilExit with the error", async () => {
  let exitFn!: (err: Error) => void;

  const App = defineComponent(() => {
    const exit = useExit();
    exitFn = exit;
    return () => <Text>x</Text>;
  });

  const { waitUntilExit } = await render(App);

  const boom = new Error("boom");
  exitFn(boom);
  await expect(waitUntilExit()).rejects.toBe(boom);
});

test("unmount() resolves waitUntilExit", async () => {
  const App = defineComponent(() => {
    return () => <Text>x</Text>;
  });

  const { unmount, waitUntilExit } = await render(App);
  unmount();
  await waitUntilExit();
});

test("unmount() after exit() is idempotent", async () => {
  let exitFn!: () => void;

  const App = defineComponent(() => {
    const exit = useExit();
    exitFn = exit;
    return () => <Text>x</Text>;
  });

  const { unmount, waitUntilExit } = await render(App);
  exitFn();
  await waitUntilExit();

  expect(() => unmount()).not.toThrow();
});

test("exit() called multiple times is idempotent", async () => {
  // Mirrors Ink's "exit normally without unmount() or exit()" pattern:
  // verifies that calling exit() twice does not throw or reject again.
  let exitFn!: () => void;

  const App = defineComponent(() => {
    exitFn = useExit();
    return () => <Text>x</Text>;
  });

  const { waitUntilExit } = await render(App);
  exitFn();
  exitFn(); // second call — must not throw or create a new promise
  await waitUntilExit();
});

test("waitUntilExit() resolves with result value passed to exit()", async () => {
  // Mirrors Ink's "exit on exit() with result value"
  let exitFn!: (errorOrResult?: unknown) => void;

  const App = defineComponent(() => {
    exitFn = useExit();
    return () => <Text>hello from vue-tui</Text>;
  });

  const { lastFrame, waitUntilExit } = await render(App);
  expect(lastFrame()).toContain("hello from vue-tui");

  exitFn("hello from ink");
  await expect(waitUntilExit()).resolves.toBe("hello from ink");
});

test("waitUntilExit() resolves with object result value", async () => {
  // Mirrors Ink's "exit on exit() with object result"
  let exitFn!: (errorOrResult?: unknown) => void;

  const App = defineComponent(() => {
    exitFn = useExit();
    return () => <Text>hello</Text>;
  });

  const { waitUntilExit } = await render(App);
  const resultObj = { message: "hello from ink object" };
  exitFn(resultObj);
  await expect(waitUntilExit()).resolves.toBe(resultObj);
});

test("waitUntilExit() resolves with undefined when exit() called with no args", async () => {
  let exitFn!: (errorOrResult?: unknown) => void;

  const App = defineComponent(() => {
    exitFn = useExit();
    return () => <Text>hello</Text>;
  });

  const { waitUntilExit } = await render(App);
  exitFn();
  await expect(waitUntilExit()).resolves.toBeUndefined();
});

test("onScopeDispose fires when exit(error) is called", async () => {
  // Mirrors Ink's "exit with thrown error" fixture — verifies teardown hooks
  // still run even when the exit is error-driven.
  let exitFn!: (err?: Error) => void;
  let disposed = false;

  const App = defineComponent(() => {
    exitFn = useExit();
    onScopeDispose(() => {
      disposed = true;
    });
    return () => <Text>running</Text>;
  });

  const { waitUntilExit } = await render(App);
  exitFn(new Error("errored"));
  await waitUntilExit().catch(() => {});
  expect(disposed).toBe(true);
});

// --- Ink subprocess-fixture tests (not portable to render-based testing) ---
// The following Ink tests drive real TTY subprocesses via node-pty and cannot
// be translated to in-process render() calls. The covered behaviors are
// exercised indirectly by the render-based tests above.

test.todo(
  "exit normally without unmount() or exit() — covered by 'unmount() resolves waitUntilExit'",
);

test.todo(
  "exit when app finishes execution — subprocess fixture; covered by exit()/unmount() tests",
);

test.todo(
  "exit on exit() with raw mode — subprocess fixture; raw-mode cleanup covered by error-handling tests",
);

test.todo(
  "exit on exit() with raw mode with error — subprocess fixture; raw-mode cleanup covered by error-handling tests",
);

test.todo(
  "exit on unmount() with raw mode — subprocess fixture; raw-mode cleanup covered by error-handling tests",
);

test.todo(
  "don't exit while raw mode is active — requires node-pty TTY subprocess; not portable to render-based testing",
);

test.todo(
  "exit when DEV is set — subprocess fixture with DEV env var; not portable to render-based testing",
);

test.todo(
  "exit on exit() with error and static output — subprocess fixture; static output behavior covered by static.test.tsx",
);