// Isolated real-Pi fixture for browser-driven checks (including WebDriver BiDi).
import { readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import {
	type FauxResponseFactory,
	fauxAssistantMessage,
} from "@earendil-works/pi-ai";
import { createPiSession } from "../../../test/fixture/create-pi-session.ts";

const canvasPackage = JSON.parse(
	readFileSync(
		new URL("../../../dist/canvas/package.json", import.meta.url),
		"utf8",
	),
) as { pi: { extensions: string[] } };
const canvasEntry = canvasPackage.pi.extensions[0];
if (!canvasEntry) throw new Error("Canvas Pi extension entry missing");

const fixture = await createPiSession({
	extensionPaths: [
		fileURLToPath(
			new URL(`../../../dist/canvas/${canvasEntry}`, import.meta.url),
		),
	],
	env: {
		PATH: "/canvas-test-no-executables",
		TERMUX_VERSION: undefined,
		PI_CANVAS_DEBUG: "0",
	},
	responses: Array.from(
		{ length: 20 },
		(): FauxResponseFactory => async (_context, _options, state) => {
			await new Promise((resolve) => setTimeout(resolve, 1500));
			return fauxAssistantMessage(
				`Firefox drawing observed: ${state.callCount}`,
			);
		},
	),
});

let closing = false;
const expiry = setTimeout(() => {
	void close();
}, 600_000);
async function close(): Promise<void> {
	if (closing) return;
	closing = true;
	clearTimeout(expiry);
	await fixture.dispose();
	console.log(
		JSON.stringify({
			kind: "closed",
			calls: fixture.providerState.callCount,
			errors: fixture.errors,
		}),
	);
	process.exitCode = fixture.errors.length ? 1 : 0;
}
process.once("SIGINT", () => {
	void close();
});
process.once("SIGTERM", () => {
	void close();
});

try {
	if (fixture.errors.length) throw new Error(fixture.errors.join("\n"));
	let url = "";
	const context = fixture.session.extensionRunner.createCommandContext();
	context.ui.notify = (text) => {
		const match = text.match(/http:\/\/127\.0\.0\.1:\d+\/#\S+/u);
		if (match) url = match[0];
	};
	await fixture.extensions[0]!.commands.get("canvas")!.handler("open", context);
	if (!url) throw new Error("Canvas fixture did not open.");
	console.log(JSON.stringify({ kind: "ready", pid: process.pid, url }));
} catch (error) {
	await close();
	throw error;
}