import { remoteFixture } from '../fixtures/remote-config.ts';
import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import { test } from 'node:test';
import { runInNewContext } from 'node:vm';
import ts from 'typescript';
import * as gameSessionHost from '../../YouleNexus/assets/framework/sdk/runtime/game-session-host.ts';
import type { RuntimeConfig } from '../../YouleNexus/assets/framework/config/runtime-config.ts';
import type { OutboundEnvelope } from '../../YouleNexus/assets/framework/core/types/envelope.ts';
import { createGameHostAdapter } from '../../YouleNexus/assets/framework/platform/game-host-adapter.ts';
import { PlatformCommands } from '../../YouleNexus/assets/framework/platform/commands.ts';
import { PlatformStore } from '../../YouleNexus/assets/framework/platform/stores/platform-store.ts';
import { parseLoginResponse } from '../../YouleNexus/assets/framework/protocol/contracts/index.ts';
import type {
  GameEntry,
  GameHost,
  GameModule,
} from '../../YouleNexus/assets/framework/sdk/contracts/index.ts';
import {
  assertGameContract,
  type GameContractHost,
} from '../../YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts';

const GAME_ROOMTYPE = JSON.parse(readFileSync(
  new URL('../fixtures/contracts/player-login-room.json', import.meta.url), 'utf8',
)).data.roomtype as readonly unknown[];

test('browser-like loader evaluates the emitted harness without Node builtin modules', () => {
  const source = readFileSync(new URL(
    '../../YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts', import.meta.url,
  ), 'utf8');
  const { outputText } = ts.transpileModule(source, {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022 },
  });
  const exports: Record<string, unknown> = {};
  const loaded: string[] = [];
  assert.doesNotThrow(() => runInNewContext(outputText, {
    exports,
    require(specifier: string) {
      if (specifier !== '../runtime/game-session-host.ts') {
        throw new Error(`Creator cannot load runtime module: ${specifier}`);
      }
      loaded.push(specifier);
      return gameSessionHost;
    },
  }));
  assert.equal(typeof exports.assertGameContract, 'function');
  assert.deepEqual(loaded, ['../runtime/game-session-host.ts']);
});

test('assertGameContract accepts a fixed-four game with its real nested roomtype and host fixture', () => {
  let invalidations = 0;
  let nextModuleId = 0;
  const restoredDeskinfo: unknown[] = [];
  const entry: GameEntry = {
    key: 'fixture',
    gameId: 41,
    route: 'fixture-route',
    resolveSeatCount: () => 4,
    createModule: () => makeModule(++nextModuleId, (deskinfo) => { restoredDeskinfo.push(deskinfo); }),
  };

  assert.doesNotThrow(() => assertGameContract(
    entry,
    [{
      roomtype: GAME_ROOMTYPE,
      expectedSeatCount: 4,
      makeHost: makeConformanceHost(entry, () => { invalidations++; }, restoredDeskinfo),
    }],
    assert,
  ));
  assert.equal(invalidations, 2);
  assert.equal(restoredDeskinfo.length, 0);
  assert.ok(nextModuleId >= 2);
});

const RUNTIME_CONFIG: RuntimeConfig = Object.freeze({
  mode: 'release',
  isDebugger: false,
  identity: Object.freeze({
    agentid: 'fixture-agent', channelid: 'fixture-channel', gameid: '41',
    marketid: 'fixture-market', version: 41,
  }),
  servers: Object.freeze(['ws://fixture']),
  source: 'remote',
  gameserver: 'https://fixture/config',
  ...remoteFixture(),
});

function makeModule(id: number, onRestore: (deskinfo: unknown) => void): GameModule {
  let host: GameHost | undefined;
  let restored: unknown;
  let eventCount = 0;
  let messageCycle: number | undefined;
  return {
    attach(value) { host = value; },
    handlePlatformEvent(event) {
      eventCount++;
      if (event.type === 'room.entered') {
        assert.deepEqual(event.roomtype, GAME_ROOMTYPE);
        assert.deepEqual(host!.getSnapshot().room.roomtype, event.roomtype);
      }
    },
    handleGameMessage(message) {
      assert.equal(message.rpc, 'conformance.message');
      const data = message.data as { cycle: number };
      assert.equal(typeof data.cycle, 'number');
      messageCycle = data.cycle;
    },
    restore(deskinfo) {
      restored = deskinfo;
      onRestore(deskinfo);
    },
    dispose() {
      if (!host) {
        assert.equal(eventCount, 0);
        assert.equal(restored, undefined);
        return;
      }
      assert.ok(host);
      assert.equal(eventCount, 1);
      assert.deepEqual(restored, deskinfoFor(messageCycle!));
    },
  };
}

function deskinfoFor(cycle: number): { readonly cycle: number } {
  return { cycle };
}

function makeConformanceHost(
  entry: GameEntry,
  onInvalidate: () => void,
  restoredDeskinfo: unknown[],
): () => GameContractHost {
  return () => {
    const login = JSON.parse(readFileSync(
      new URL('../fixtures/contracts/player-login-room.json', import.meta.url),
      'utf8',
    )) as { data: Record<string, unknown> };
    login.data.isbattle = 0;
    const store = new PlatformStore();
    store.applyLoginSuccess(parseLoginResponse(login.data));
    const sent: OutboundEnvelope[] = [];
    const send = { send: (envelope: OutboundEnvelope) => { sent.push(envelope); } };
    const commands = new PlatformCommands({ runtimeConfig: RUNTIME_CONFIG, store, send });
    const lease = createGameHostAdapter({ gameEntry: entry, store, commands, send });
    return {
      host: lease.host,
      invalidate() {
        lease.invalidate();
        onInvalidate();
      },
      assertRestored(deskinfo) {
        assert.equal(restoredDeskinfo.shift(), deskinfo);
      },
    };
  };
}