// Phase 25 end-to-end coverage for the sync protocol additions on
// the order tab: the offline / online flip, the
// `turn_already_closed` conflict banner, and the `game.paused` push
// frame. Each test boots an authenticated session, mocks the lobby
// + report + order routes, drives an order mutation through the
// inspector, and asserts the matching banner / sync-status DOM.

import { fromJson, type JsonValue } from "@bufbuild/protobuf";
import { expect, test, type Page } from "@playwright/test";
import { ByteBuffer } from "flatbuffers";

import { ExecuteCommandRequestSchema } from "../../src/proto/galaxy/gateway/v1/edge_gateway_pb";
import { UUID } from "../../src/proto/galaxy/fbs/common";
import {
	UserGamesOrder,
	UserGamesOrderGet,
} from "../../src/proto/galaxy/fbs/order";
import { GameReportRequest } from "../../src/proto/galaxy/fbs/report";
import { forgeExecuteCommandResponseJson } from "./fixtures/sign-response";
import { forgeGatewayEventFrame } from "./fixtures/sign-event";
import {
	buildMyGamesListPayload,
	type GameFixture,
} from "./fixtures/lobby-fbs";
import { buildReportPayload } from "./fixtures/report-fbs";
import {
	buildOrderGetResponsePayload,
	buildOrderResponsePayload,
	type CommandResultFixture,
} from "./fixtures/order-fbs";

const SESSION_ID = "phase-25-order-sync-session";
const GAME_ID = "25252525-2525-2525-2525-252525252525";
const WORLD = 4000;
const CENTRE = WORLD / 2;
const TURN = 4;

type SubmitVerdict = "applied" | "rejected" | "turn_already_closed" | "game_paused";

interface MockOpts {
	/** Initial server-side order returned by `user.games.order.get`. */
	storedOrder?: CommandResultFixture[];
	/** How the first `user.games.order` submit replies. */
	initialSubmitVerdict: SubmitVerdict;
	/**
	 * If set, the SubscribeEvents stream emits this frame instead of
	 * holding the connection open. Used by the paused-banner test.
	 */
	subscribeFrame?: { eventType: string; payload: Uint8Array };
}

interface MockHandle {
	/** Setter the test uses to flip the verdict mid-run. */
	setSubmitVerdict(next: SubmitVerdict): void;
	/** Read-only counter for assertion. */
	get submitCallCount(): number;
}

async function mockGateway(page: Page, opts: MockOpts): Promise<MockHandle> {
	const game: GameFixture = {
		gameId: GAME_ID,
		gameName: "Phase 25 Game",
		gameType: "private",
		status: "running",
		ownerUserId: "user-1",
		minPlayers: 2,
		maxPlayers: 8,
		enrollmentEndsAtMs: BigInt(Date.now() + 86_400_000),
		createdAtMs: BigInt(Date.now() - 86_400_000),
		updatedAtMs: BigInt(Date.now()),
		currentTurn: TURN,
	};

	let storedOrder = (opts.storedOrder ?? []).slice();
	let submitVerdict: SubmitVerdict = opts.initialSubmitVerdict;
	let submitCalls = 0;

	await page.route(
		"**/galaxy.gateway.v1.EdgeGateway/ExecuteCommand",
		async (route) => {
			const reqText = route.request().postData();
			if (reqText === null) {
				await route.fulfill({ status: 400 });
				return;
			}
			const req = fromJson(
				ExecuteCommandRequestSchema,
				JSON.parse(reqText) as JsonValue,
			);

			let resultCode = "ok";
			let payload: Uint8Array;
			let bodyOverride: string | null = null;
			switch (req.messageType) {
				case "lobby.my.games.list":
					payload = buildMyGamesListPayload([game]);
					break;
				case "user.games.report": {
					GameReportRequest.getRootAsGameReportRequest(
						new ByteBuffer(req.payloadBytes),
					).gameId(new UUID());
					payload = buildReportPayload({
						turn: TURN,
						mapWidth: WORLD,
						mapHeight: WORLD,
						localPlanets: [
							{
								number: 17,
								name: "Earth",
								x: CENTRE,
								y: CENTRE,
								size: 1000,
								resources: 10,
								capital: 0,
								material: 0,
								population: 850,
								colonists: 25,
								industry: 700,
								production: "drive",
								freeIndustry: 175,
							},
						],
					});
					break;
				}
				case "user.games.order": {
					submitCalls += 1;
					const decoded = UserGamesOrder.getRootAsUserGamesOrder(
						new ByteBuffer(req.payloadBytes),
					);
					const length = decoded.commandsLength();
					const fixtures: CommandResultFixture[] = [];
					for (let i = 0; i < length; i++) {
						const item = decoded.commands(i);
						if (item === null) continue;
						const cmdId = item.cmdId() ?? "";
						const inner = new (await import(
							"../../src/proto/galaxy/fbs/order"
						)).CommandPlanetRename();
						item.payload(inner);
						const submittedName = inner.name() ?? "";
						const applied = submitVerdict === "applied";
						fixtures.push({
							kind: "planetRename",
							cmdId,
							planetNumber: Number(inner.number()),
							name: submittedName,
							applied,
							errorCode: applied ? null : 1,
						});
					}
					if (submitVerdict === "turn_already_closed") {
						resultCode = "turn_already_closed";
						bodyOverride = JSON.stringify({
							code: "turn_already_closed",
							message: "turn closed before submit",
						});
					} else if (submitVerdict === "game_paused") {
						resultCode = "game_paused";
						bodyOverride = JSON.stringify({
							code: "game_paused",
							message: "game is paused",
						});
					}
					if (submitVerdict === "applied") {
						storedOrder = fixtures;
					}
					payload =
						bodyOverride !== null
							? new TextEncoder().encode(bodyOverride)
							: buildOrderResponsePayload(GAME_ID, fixtures, Date.now());
					break;
				}
				case "user.games.order.get": {
					UserGamesOrderGet.getRootAsUserGamesOrderGet(
						new ByteBuffer(req.payloadBytes),
					);
					payload = buildOrderGetResponsePayload(
						GAME_ID,
						storedOrder,
						Date.now(),
						storedOrder.length > 0,
					);
					break;
				}
				default:
					resultCode = "internal_error";
					payload = new Uint8Array();
			}

			const body = await forgeExecuteCommandResponseJson({
				requestId: req.requestId,
				timestampMs: BigInt(Date.now()),
				resultCode,
				payloadBytes: payload,
			});
			await route.fulfill({
				status: 200,
				contentType: "application/json",
				body,
			});
		},
	);

	let subscribeServed = false;
	await page.route(
		"**/galaxy.gateway.v1.EdgeGateway/SubscribeEvents",
		async (route) => {
			if (opts.subscribeFrame !== undefined && !subscribeServed) {
				subscribeServed = true;
				const frame = await forgeGatewayEventFrame({
					eventType: opts.subscribeFrame.eventType,
					eventId: "evt-phase25-1",
					timestampMs: BigInt(Date.now()),
					requestId: "req-phase25-1",
					traceId: "trace-phase25-1",
					payloadBytes: opts.subscribeFrame.payload,
				});
				await route.fulfill({
					status: 200,
					contentType: "application/connect+json",
					body: Buffer.from(frame),
				});
				return;
			}
			await new Promise<void>(() => {});
		},
	);

	return {
		setSubmitVerdict(next) {
			submitVerdict = next;
		},
		get submitCallCount() {
			return submitCalls;
		},
	};
}

async function bootSession(page: Page): Promise<void> {
	await page.goto("/__debug/store");
	await expect(page.getByTestId("debug-store-ready")).toBeVisible();
	await page.waitForFunction(() => window.__galaxyDebug?.ready === true);
	await page.evaluate(() => window.__galaxyDebug!.clearSession());
	await page.evaluate(
		(id) => window.__galaxyDebug!.setDeviceSessionId(id),
		SESSION_ID,
	);
	await page.evaluate(
		(gameId) => window.__galaxyDebug!.clearOrderDraft(gameId),
		GAME_ID,
	);
}

async function clickPlanetCentre(page: Page): Promise<void> {
	const canvas = page.locator("canvas");
	const box = await canvas.boundingBox();
	expect(box).not.toBeNull();
	if (box === null) throw new Error("canvas has no bounding box");
	await page.mouse.click(box.x + box.width / 2, box.y + box.height / 2);
}

async function startRename(page: Page, newName: string): Promise<void> {
	await clickPlanetCentre(page);
	const sidebar = page.getByTestId("sidebar-tool-inspector");
	await sidebar.getByTestId("inspector-planet-rename-action").click();
	const input = sidebar.getByTestId("inspector-planet-rename-input");
	await input.fill(newName);
	await sidebar.getByTestId("inspector-planet-rename-confirm").click();
}

test("turn_already_closed surfaces the conflict banner on the order tab", async ({
	page,
}, testInfo) => {
	test.skip(
		testInfo.project.name.startsWith("chromium-mobile"),
		"phase 25 spec covers desktop layout; mobile inherits the same store",
	);
	await mockGateway(page, { initialSubmitVerdict: "turn_already_closed" });
	await bootSession(page);
	await page.goto(`/games/${GAME_ID}/map`);
	await expect(page.getByTestId("active-view-map")).toHaveAttribute(
		"data-status",
		"ready",
	);

	await startRename(page, "Conflict-Earth");

	await page.getByTestId("sidebar-tab-order").click();
	const orderTool = page.getByTestId("sidebar-tool-order");
	await expect(orderTool.getByTestId("order-conflict-banner")).toBeVisible({
		timeout: 5_000,
	});
	await expect(orderTool.getByTestId("order-conflict-banner")).toContainText(
		"Edit and resubmit",
	);
	await expect(orderTool.getByTestId("order-command-status-0")).toHaveText(
		"conflict",
	);
	await expect(orderTool.getByTestId("order-sync")).toHaveAttribute(
		"data-sync-status",
		"conflict",
	);
});

test("game.paused push frame surfaces the paused banner", async ({
	page,
}, testInfo) => {
	test.skip(
		testInfo.project.name.startsWith("chromium-mobile"),
		"phase 25 spec covers desktop layout; mobile inherits the same store",
	);
	const payload = new TextEncoder().encode(
		JSON.stringify({
			game_id: GAME_ID,
			turn: TURN,
			reason: "generation_failed",
		}),
	);
	await mockGateway(page, {
		initialSubmitVerdict: "applied",
		subscribeFrame: { eventType: "game.paused", payload },
	});
	await bootSession(page);
	await page.goto(`/games/${GAME_ID}/map`);
	await expect(page.getByTestId("active-view-map")).toHaveAttribute(
		"data-status",
		"ready",
	);

	await page.getByTestId("sidebar-tab-order").click();
	const orderTool = page.getByTestId("sidebar-tool-order");
	await expect(orderTool.getByTestId("order-paused-banner")).toBeVisible({
		timeout: 5_000,
	});
	await expect(orderTool.getByTestId("order-sync")).toHaveAttribute(
		"data-sync-status",
		"paused",
	);
});