import { describe, expect, it, vi } from 'vitest';
import type { RedditPost } from '../src/reddit/api.js';
import type { RedditAccountRuntimeResources } from '../src/services/reddit-account-runtime.js';
import { AccountRuntimeLoop, materializePreparedPostForAccount } from '../src/services/reddit-account-runtime-builder.js';
import type { ProcessedPost } from '../src/services/processor.js';

describe('materializePreparedPostForAccount', () => {
  it('creates the sending account post row before message persistence', () => {
    const post: RedditPost = {
      id: 'post-1', subreddit: 'test', author: 'alice', author_fullname: 't2_alice',
      title: 'title', url: 'https://example.com/image.jpg', permalink: '/r/test/post-1',
      thumbnail: '', is_self: false, created_utc: 123, over_18: true, spoiler: false,
    };
    const processed: ProcessedPost = {
      post, imageAnalysis: 'analysis', detectedGender: 'female', attractivenessScore: 64,
      physiqueScore: 5, physiqueTargeting: { enabled: false, minScore: 1, maxScore: 10 },
      sourceImageUrl: 'https://example.com/image.jpg', generatedMessage: 'message',
      strategyId: null, experimentId: null, promptVersion: null, selectionReason: null,
      modelId: 'model', sourceType: 'image', toneId: 'default', scripted: false,
    };
    const insertIfAbsent = vi.fn();
    const updateAnalysis = vi.fn();
    const resources = {
      postsRepo: { insertIfAbsent, updateAnalysis },
      redditApi: {
        getPostUrl: () => 'https://reddit.example/post-1',
        getImageUrl: () => 'https://reddit.example/image.jpg',
      },
    } as unknown as Pick<RedditAccountRuntimeResources, 'postsRepo' | 'redditApi'>;

    materializePreparedPostForAccount(resources, processed, 456);

    expect(insertIfAbsent).toHaveBeenCalledWith({
      id: 'post-1', subreddit: 'test', author: 'alice', title: 'title',
      postUrl: 'https://reddit.example/post-1', imageUrl: 'https://reddit.example/image.jpg',
      postCreatedAt: 123_000, processedAt: 456,
    });
    expect(updateAnalysis).toHaveBeenCalledWith('post-1', 'analysis', 'message');
  });
});

describe('AccountRuntimeLoop mode gating', () => {
  function loopHarness(
    getBotMode: () => 'running' | 'scan' | 'stopped',
    growthService?: { tick: ReturnType<typeof vi.fn>; recoverAfterRestart: ReturnType<typeof vi.fn> },
    browsingService?: { tick: ReturnType<typeof vi.fn> },
  ) {
    const conversationAutomation = { processPendingConversations: vi.fn().mockResolvedValue([]) };
    const responseChecker = { checkForResponses: vi.fn().mockResolvedValue([]) };
    const mediaSyncService = { start: vi.fn(), stop: vi.fn() };
    const chatService = {
      runStartupSync: vi.fn().mockResolvedValue(undefined),
      enrichUsernames: vi.fn().mockResolvedValue(undefined),
    };
    const resources = {
      conversationAutomation,
      responseChecker,
      mediaSyncService,
      chatService,
      accountAuth: {
        isFullyAuthenticated: () => true,
        getSnapshot: () => ({ redditUsername: 'tester' }),
      },
      activityLogRepo: { insert: vi.fn() },
      recipientAccountStatusService: { start: vi.fn(), stop: vi.fn() },
      establishmentService: { start: vi.fn(), stop: vi.fn() },
      browserClient: { close: vi.fn().mockResolvedValue(undefined) },
      ...(growthService ? { growthService } : {}),
      ...(browsingService ? { browsingService } : {}),
    };
    const config = { reddit: { pollIntervalMs: 1_000 }, browser: { dryRun: false } };
    const logger = { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() };
    const loop = new AccountRuntimeLoop(
      resources as never, config as never, logger as never, getBotMode, { } as never,
    );
    return {
      loop, conversationAutomation, responseChecker, mediaSyncService, chatService,
      growthService, browsingService,
    };
  }

  /** Lets the loop complete at least one full pass before we assert. */
  async function runBriefly(loop: AccountRuntimeLoop): Promise<void> {
    loop.start();
    await new Promise((resolve) => setTimeout(resolve, 60));
    await loop.stop();
  }

  it('keeps conversations in sync in scan mode but suppresses replies', async () => {
    const fixture = loopHarness(() => 'scan');

    await runBriefly(fixture.loop);

    expect(fixture.conversationAutomation.processPendingConversations)
      .toHaveBeenCalledWith(expect.anything(), { scanOnly: true });
    expect(fixture.responseChecker.checkForResponses).toHaveBeenCalled();
    expect(fixture.mediaSyncService.start).toHaveBeenCalled();
    expect(fixture.chatService.runStartupSync).toHaveBeenCalled();
  });

  it('sends replies in running mode', async () => {
    const fixture = loopHarness(() => 'running');

    await runBriefly(fixture.loop);

    expect(fixture.conversationAutomation.processPendingConversations)
      .toHaveBeenCalledWith(expect.anything(), { scanOnly: false });
  });

  it('halts every background refresh when stopped', async () => {
    const fixture = loopHarness(() => 'stopped');

    await runBriefly(fixture.loop);

    expect(fixture.conversationAutomation.processPendingConversations).not.toHaveBeenCalled();
    expect(fixture.responseChecker.checkForResponses).not.toHaveBeenCalled();
    expect(fixture.mediaSyncService.start).not.toHaveBeenCalled();
    expect(fixture.chatService.runStartupSync).not.toHaveBeenCalled();
  });

  it('stops the background media sync when the operator drops from scan to stopped', async () => {
    let mode: 'running' | 'scan' | 'stopped' = 'scan';
    const fixture = loopHarness(() => mode);

    fixture.loop.start();
    await new Promise((resolve) => setTimeout(resolve, 30));
    expect(fixture.mediaSyncService.start).toHaveBeenCalledTimes(1);

    mode = 'stopped';
    await new Promise((resolve) => setTimeout(resolve, 30));
    await fixture.loop.stop();

    expect(fixture.mediaSyncService.stop).toHaveBeenCalled();
    // Only ever started once — the reconcile must not re-enter on every tick.
    expect(fixture.mediaSyncService.start).toHaveBeenCalledTimes(1);
  });

  describe('account growth', () => {
    function growthStub(tick = vi.fn().mockResolvedValue({ kind: 'idle', reason: 'test' })) {
      return { tick, recoverAfterRestart: vi.fn().mockReturnValue(0) };
    }

    it('retires interrupted comments before starting any growth work', async () => {
      const growth = growthStub();
      const fixture = loopHarness(() => 'running', growth);

      await runBriefly(fixture.loop);

      expect(growth.recoverAfterRestart).toHaveBeenCalledTimes(1);
      const recoverOrder = growth.recoverAfterRestart.mock.invocationCallOrder[0];
      const tickOrder = growth.tick.mock.invocationCallOrder[0];
      expect(recoverOrder).toBeLessThan(tickOrder);
    });

    it('lets growth post in running mode', async () => {
      const growth = growthStub();
      const fixture = loopHarness(() => 'running', growth);

      await runBriefly(fixture.loop);

      expect(growth.tick).toHaveBeenCalledWith({ allowPosting: true }, expect.anything());
    });

    it('verifies but never posts in scan mode', async () => {
      const growth = growthStub();
      const fixture = loopHarness(() => 'scan', growth);

      await runBriefly(fixture.loop);

      expect(growth.tick).toHaveBeenCalledWith({ allowPosting: false }, expect.anything());
    });

    it('does not run growth at all when stopped', async () => {
      const growth = growthStub();
      const fixture = loopHarness(() => 'stopped', growth);

      await runBriefly(fixture.loop);

      expect(growth.tick).not.toHaveBeenCalled();
    });

    it('runs growth only after replies have been handled in the same pass', async () => {
      const growth = growthStub();
      const fixture = loopHarness(() => 'running', growth);

      await runBriefly(fixture.loop);

      // Growth is the lowest-priority work: inbound replies come first.
      const replyOrder = fixture.conversationAutomation.processPendingConversations
        .mock.invocationCallOrder[0];
      expect(replyOrder).toBeLessThan(growth.tick.mock.invocationCallOrder[0]);
    });

    it('keeps reply handling alive when a growth tick throws', async () => {
      const growth = growthStub(vi.fn().mockRejectedValue(new Error('growth exploded')));
      const fixture = loopHarness(() => 'running', growth);

      fixture.loop.start();
      await new Promise((resolve) => setTimeout(resolve, 60));
      await fixture.loop.stop();

      expect(growth.tick).toHaveBeenCalled();
      expect(fixture.responseChecker.checkForResponses).toHaveBeenCalled();
    });

    it('works with no growth service configured', async () => {
      const fixture = loopHarness(() => 'running');

      await expect(runBriefly(fixture.loop)).resolves.toBeUndefined();
    });
  });

  describe('browsing simulation', () => {
    const browsingStub = () => ({ tick: vi.fn().mockResolvedValue({ kind: 'idle', reason: 'test' }) });

    it.each(['running', 'scan'] as const)('runs in %s mode after growth', async (mode) => {
      const growth = { tick: vi.fn().mockResolvedValue({ kind: 'idle' }), recoverAfterRestart: vi.fn() };
      const browsing = browsingStub();
      const fixture = loopHarness(() => mode, growth, browsing);

      await runBriefly(fixture.loop);

      expect(browsing.tick).toHaveBeenCalledWith(
        { allowVoting: mode === 'running' }, expect.anything(),
      );
      expect(growth.tick.mock.invocationCallOrder[0])
        .toBeLessThan(browsing.tick.mock.invocationCallOrder[0]);
    });

    it('does not run while stopped', async () => {
      const browsing = browsingStub();
      const fixture = loopHarness(() => 'stopped', undefined, browsing);

      await runBriefly(fixture.loop);

      expect(browsing.tick).not.toHaveBeenCalled();
    });

    it('isolates browsing failures from reply handling', async () => {
      const browsing = { tick: vi.fn().mockRejectedValue(new Error('simulation exploded')) };
      const fixture = loopHarness(() => 'running', undefined, browsing);

      await runBriefly(fixture.loop);

      expect(browsing.tick).toHaveBeenCalled();
      expect(fixture.conversationAutomation.processPendingConversations).toHaveBeenCalled();
    });
  });
});