import { test, describe, afterEach, expect } from "vitest";
import { cleanup, render } from "@self/tootils/render";

import Group from "./Index.svelte";
import GroupWithChild from "./WithChild.svelte";

describe("Group", () => {
	afterEach(() => cleanup());

	test("renders the group container", async () => {
		const { container } = await render(Group, {});
		// No role, label, or text available for a bare layout container —
		// querySelector(".gr-group") is the appropriate query here.
		expect(container.querySelector(".gr-group")).not.toBeNull();
	});

	test("elem_id is applied to the outer div", async () => {
		const { container } = await render(Group, { elem_id: "my-group" });
		expect(container.querySelector("#my-group")).not.toBeNull();
	});

	test("elem_classes are applied to the outer div", async () => {
		const { container } = await render(Group, {
			elem_classes: ["my-group-class"]
		});
		expect(container.querySelector(".my-group-class")).not.toBeNull();
	});

	test("visible: true → container is visible", async () => {
		const { container } = await render(Group, {
			visible: true,
			elem_id: "group-visible"
		});
		expect(container.querySelector("#group-visible")).toBeVisible();
	});

	test("visible: 'hidden' → container is hidden in the DOM", async () => {
		const { container } = await render(Group, {
			visible: "hidden",
			elem_id: "group-hidden"
		});
		const el = container.querySelector("#group-hidden");
		expect(el).not.toBeNull();
		expect(el).not.toBeVisible();
	});

	test("visible: false does NOT hide the container (Group only responds to the 'hidden' string)", async () => {
		// Group's template uses class:hide={gradio.shared.visible === "hidden"}.
		// Boolean false does not equal the string "hidden", so the container remains
		// visible. Differs from Row/Column which use !visible and hide on false.
		const { container } = await render(Group, {
			visible: false,
			elem_id: "group-false"
		});
		const el = container.querySelector("#group-false");
		expect(el).not.toBeNull();
		expect(el).toBeVisible();
	});

	test("uses border-color-primary for grouped child separators", async () => {
		const { container } = await render(Group, {});
		const group = container.querySelector(".gr-group") as HTMLElement;
		const styler = container.querySelector(".styler") as HTMLElement;

		group.style.setProperty("--block-border-color", "rgb(255, 0, 0)");
		group.style.setProperty("--border-color-primary", "rgb(0, 128, 0)");

		expect(getComputedStyle(styler).backgroundColor).toBe("rgb(0, 128, 0)");
	});
});

describe("Children / slot", () => {
	afterEach(() => cleanup());

	test("renders slot children inside the group container", async () => {
		const { getByTestId } = await render(GroupWithChild, {});
		expect(getByTestId("slot-content")).not.toBeNull();
	});

	test("slot children are visible when group is visible", async () => {
		const { getByTestId } = await render(GroupWithChild, { visible: true });
		expect(getByTestId("slot-content")).toBeVisible();
	});

	test("slot children are hidden when group uses visible: 'hidden'", async () => {
		const { getByTestId } = await render(GroupWithChild, {
			visible: "hidden"
		});
		// Group applies display:none via .hide class when visible === "hidden"
		expect(getByTestId("slot-content")).not.toBeVisible();
	});
});

test.todo(
	"VISUAL: Group removes borders, border-radius, and box-shadow from child blocks via CSS variable overrides (--block-border-width: 0px, --block-radius: 0px) — needs Playwright visual regression screenshot comparison"
);
test.todo(
	"VISUAL: Group uses 1px gap between children (--form-gap-width: 1px, --layout-gap: 1px), tightly grouping them without spacing — needs Playwright visual regression screenshot comparison"
);