// Phase 21 end-to-end coverage for the science CRUD flow + the
// production-picker integration. Boots an authenticated session,
// mocks the gateway with a single local planet plus an empty
// `localScience` projection, navigates to the sciences table, opens
// the designer, fills the form (four percentages summing to 100),
// and asserts that:
//
//   1. Save adds a `createScience` row to the local order draft,
//      auto-syncs through `user.games.order`, and the new science
//      appears in the table immediately (overlay) and in the sidebar
//      order tab as `applied`;
//   2. invalid input keeps the Save button disabled and surfaces
//      the localised reason (sum-not-100 + duplicate name);
//   3. setting a planet's production to the new science via the
//      Research sub-row of the planet inspector dispatches
//      `setProductionType("SCIENCE", <name>)` and the optimistic
//      overlay flips the planet's production string immediately;
//   4. Delete on a row adds a `removeScience` and the science
//      disappears from the table; the order tab reflects both rows.

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 {
	CommandPayload,
	CommandPlanetProduce,
	CommandScienceCreate,
	CommandScienceRemove,
	UserGamesOrder,
	UserGamesOrderGet,
} from "../../src/proto/galaxy/fbs/order";
import { GameReportRequest } from "../../src/proto/galaxy/fbs/report";
import { forgeExecuteCommandResponseJson } from "./fixtures/sign-response";
import {
	buildMyGamesListPayload,
	type GameFixture,
} from "./fixtures/lobby-fbs";
import {
	buildReportPayload,
	type ScienceFixture,
} from "./fixtures/report-fbs";
import {
	buildOrderGetResponsePayload,
	buildOrderResponsePayload,
	type CommandResultFixture,
} from "./fixtures/order-fbs";

const SESSION_ID = "phase-21-sciences-session";
const GAME_ID = "21212121-2121-2121-2121-212121212121";

interface MockOpts {
	createOutcome: "applied" | "rejected";
	initialSciences?: ScienceFixture[];
}

interface MockHandle {
	get lastCreate(): {
		name: string;
		drive: number;
		weapons: number;
		shields: number;
		cargo: number;
	} | null;
	get lastRemove(): { name: string } | null;
	get lastProduce(): {
		planetNumber: number;
		productionType: string;
		subject: string;
	} | null;
}

async function mockGateway(page: Page, opts: MockOpts): Promise<MockHandle> {
	const game: GameFixture = {
		gameId: GAME_ID,
		gameName: "Phase 21 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: 1,
	};

	let storedOrder: CommandResultFixture[] = [];
	let lastCreate: MockHandle["lastCreate"] = null;
	let lastRemove: MockHandle["lastRemove"] = null;
	let lastProduce: MockHandle["lastProduce"] = null;
	const reportSciences: ScienceFixture[] = [...(opts.initialSciences ?? [])];

	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;
			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: 1,
						mapWidth: 4000,
						mapHeight: 4000,
						race: "Earthlings",
						players: [{ name: "Earthlings", drive: 1 }],
						localPlanets: [
							{
								number: 1,
								name: "Earth",
								x: 2000,
								y: 2000,
								size: 1000,
								resources: 5,
								population: 800,
								industry: 600,
							},
						],
						localScience: reportSciences,
					});
					break;
				}
				case "user.games.order": {
					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 payloadType = item.payloadType();
						if (payloadType === CommandPayload.CommandScienceCreate) {
							const inner = new CommandScienceCreate();
							item.payload(inner);
							lastCreate = {
								name: inner.name() ?? "",
								drive: inner.drive(),
								weapons: inner.weapons(),
								shields: inner.shields(),
								cargo: inner.cargo(),
							};
							const applied = opts.createOutcome === "applied";
							fixtures.push({
								kind: "createScience",
								cmdId,
								name: lastCreate.name,
								drive: lastCreate.drive,
								weapons: lastCreate.weapons,
								shields: lastCreate.shields,
								cargo: lastCreate.cargo,
								applied,
								errorCode: applied ? null : 1,
							});
							continue;
						}
						if (payloadType === CommandPayload.CommandScienceRemove) {
							const inner = new CommandScienceRemove();
							item.payload(inner);
							lastRemove = { name: inner.name() ?? "" };
							fixtures.push({
								kind: "removeScience",
								cmdId,
								name: lastRemove.name,
								applied: true,
								errorCode: null,
							});
							continue;
						}
						if (payloadType === CommandPayload.CommandPlanetProduce) {
							const inner = new CommandPlanetProduce();
							item.payload(inner);
							lastProduce = {
								planetNumber: Number(inner.number()),
								productionType: String(inner.production()),
								subject: inner.subject() ?? "",
							};
							fixtures.push({
								kind: "setProductionType",
								cmdId,
								planetNumber: Number(inner.number()),
								productionType: "SCIENCE",
								subject: inner.subject() ?? "",
								applied: true,
								errorCode: null,
							});
							continue;
						}
					}
					storedOrder = fixtures;
					payload = 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,
			});
		},
	);

	await page.route(
		"**/galaxy.gateway.v1.EdgeGateway/SubscribeEvents",
		async () => {
			await new Promise<void>(() => {});
		},
	);

	return {
		get lastCreate() {
			return lastCreate;
		},
		get lastRemove() {
			return lastRemove;
		},
		get lastProduce() {
			return lastProduce;
		},
	};
}

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,
	);
}

test("create / list / delete science via the table + designer", async ({
	page,
}, testInfo) => {
	test.skip(
		testInfo.project.name.startsWith("chromium-mobile"),
		"phase 21 spec covers desktop layout; mobile inherits the same store",
	);

	const handle = await mockGateway(page, { createOutcome: "applied" });
	await bootSession(page);
	await page.goto(`/games/${GAME_ID}/table/sciences`);

	const tableHost = page.getByTestId("active-view-table");
	await expect(tableHost).toBeVisible();
	await expect(page.getByTestId("sciences-empty")).toBeVisible();

	await page.getByTestId("sciences-new").click();
	await expect(page.getByTestId("active-view-designer-science")).toHaveAttribute(
		"data-mode",
		"new",
	);

	await page.getByTestId("designer-science-input-name").fill("FirstStep");
	await page.getByTestId("designer-science-input-drive").fill("25");
	await page.getByTestId("designer-science-input-weapons").fill("25");
	await page.getByTestId("designer-science-input-shields").fill("25");
	await page.getByTestId("designer-science-input-cargo").fill("25");
	const save = page.getByTestId("designer-science-save");
	await expect(save).toBeEnabled();
	await save.click();

	// Returns to the table; the optimistic overlay shows the new science.
	await expect(page.getByTestId("sciences-table")).toBeVisible();
	const row = page.getByTestId("sciences-row");
	await expect(row).toHaveAttribute("data-name", "FirstStep");
	await expect(page.getByTestId("sciences-cell-drive")).toHaveText("25");

	// The auto-sync round-trip lands as applied.
	await page.getByTestId("sidebar-tab-order").click();
	const orderTool = page.getByTestId("sidebar-tool-order");
	await expect(orderTool.getByTestId("order-command-label-0")).toContainText(
		"FirstStep",
	);
	await expect(orderTool.getByTestId("order-command-status-0")).toHaveText(
		"applied",
	);
	expect(handle.lastCreate?.name).toBe("FirstStep");
	expect(handle.lastCreate?.drive).toBeCloseTo(0.25, 12);

	// Delete the science through the table action; the row disappears
	// and the order tab gets a second row.
	await page.getByTestId("sidebar-tab-inspector").click();
	await page.getByTestId("sciences-delete").click();
	await expect(page.getByTestId("sciences-empty")).toBeVisible();
	await page.getByTestId("sidebar-tab-order").click();
	await expect(orderTool.getByTestId("order-command-label-1")).toContainText(
		"FirstStep",
	);
	expect(handle.lastRemove?.name).toBe("FirstStep");
});

test("designer keeps Save disabled while the form is invalid", async ({
	page,
}, testInfo) => {
	test.skip(
		testInfo.project.name.startsWith("chromium-mobile"),
		"phase 21 spec covers desktop layout; mobile inherits the same store",
	);

	await mockGateway(page, { createOutcome: "applied" });
	await bootSession(page);
	await page.goto(`/games/${GAME_ID}/designer/science`);

	const save = page.getByTestId("designer-science-save");
	await expect(save).toBeDisabled();

	// Empty name surfaces the entity-name error.
	await expect(page.getByTestId("designer-science-error")).toHaveText(
		"name cannot be empty",
	);

	// Sum off — error stays visible and Save remains disabled.
	await page.getByTestId("designer-science-input-name").fill("Bad");
	await page.getByTestId("designer-science-input-drive").fill("50");
	await expect(page.getByTestId("designer-science-error")).toHaveText(
		"the four percentages must sum to exactly 100",
	);
	await expect(save).toBeDisabled();

	// Filling the rest to total 100 enables Save.
	await page.getByTestId("designer-science-input-weapons").fill("50");
	await expect(save).toBeEnabled();
});

test("planet production picker exposes user sciences in the Research sub-row", async ({
	page,
}, testInfo) => {
	test.skip(
		testInfo.project.name.startsWith("chromium-mobile"),
		"phase 21 spec covers desktop layout; mobile inherits the same store",
	);

	const handle = await mockGateway(page, {
		createOutcome: "applied",
		initialSciences: [
			{ name: "FirstStep", drive: 0.25, weapons: 0.25, shields: 0.25, cargo: 0.25 },
		],
	});
	await bootSession(page);
	await page.goto(`/games/${GAME_ID}/map`);
	await expect(page.getByTestId("active-view-map")).toHaveAttribute(
		"data-status",
		"ready",
	);

	// Click the planet on the map canvas to seed the inspector
	// selection — the Phase 11 map auto-centres on the single planet.
	const canvas = page.locator("canvas");
	const box = await canvas.boundingBox();
	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);

	const sidebar = page.getByTestId("sidebar-tool-inspector");
	await expect(sidebar.getByTestId("inspector-planet-name")).toHaveText("Earth");

	// Expand the Research segment.
	await sidebar
		.getByTestId("inspector-planet-production-segment-research")
		.click();

	// Tech buttons + the user's science button are both rendered.
	await expect(
		sidebar.getByTestId("inspector-planet-production-research-drive"),
	).toBeVisible();
	const scienceButton = sidebar.getByTestId(
		"inspector-planet-production-science-FirstStep",
	);
	await expect(scienceButton).toBeVisible();

	// Click the science → setProductionType("SCIENCE", "FirstStep")
	// lands in the draft and auto-syncs.
	await scienceButton.click();
	await expect.poll(() => handle.lastProduce?.subject).toBe("FirstStep");
	expect(handle.lastProduce?.planetNumber).toBe(1);
});