import express from 'express';
import type { AddressInfo } from 'node:net';
import { afterEach, describe, expect, it, vi } from 'vitest';
import {
  OutreachClearResponseSchema,
  OutreachCandidateDeleteResponseSchema,
  OutreachFunnelResponseSchema,
  OutreachMessageUpdateResponseSchema,
} from '../../packages/api-contracts/src/index.js';
import type { WebContext } from '../../src/web/context.js';
import { createOutreachRouter } from '../../src/web/routes/outreach.js';

const servers: Array<ReturnType<express.Express['listen']>> = [];

async function request(app: express.Express, path: string, init?: RequestInit): Promise<Response> {
  const server = app.listen(0);
  servers.push(server);
  await new Promise<void>((resolve) => server.once('listening', resolve));
  const { port } = server.address() as AddressInfo;
  return fetch(`http://127.0.0.1:${port}${path}`, init);
}

afterEach(async () => {
  await Promise.all(servers.splice(0).map((server) => new Promise<void>((resolve) => server.close(() => resolve()))));
});

describe('outreach route', () => {
  it('publishes prepared candidate context without leaking worker lease internals', async () => {
    const candidateQueue = {
      getStats: vi.fn(() => ({
        total: 9,
        byStatus: { discovered: 2, screening: 1, ready: 1, sending: 1, retryable: 1, sent: 2, rejected: 1 },
        ready: 1,
        oldestReadyAt: 2_000,
        rejectionReasons: [],
      })),
      getOldestActiveAt: vi.fn(() => 1_000),
      listActive: vi.fn(() => [{
        postId: 'post-1', subreddit: 'example', author: 'alice', sourceType: 'image',
        post: {
          id: 'post-1', subreddit: 'example', author: 'alice', author_fullname: 't2_alice',
          title: '[25F] Hello', url: 'https://i.redd.it/post-1.jpg', permalink: '/r/example/comments/post-1/hello/',
          thumbnail: '', is_self: false, created_utc: 100, over_18: true, spoiler: false,
          targetComment: {
            body: 'I wish that was me',
            permalink: '/r/example/comments/post-1/hello/comment-1/',
            sourcePostId: 'post-1', sourcePostAuthor: 'source-author',
            expressedGender: 'unknown', confidence: 0.94,
          },
        },
        prepared: {
          generatedMessage: 'Prepared opener for Alice',
          imageAnalysis: 'VISIBLE_FACTS:\nBODY: VISIBLE - full-body pose',
          detectedGender: 'female',
          attractivenessScore: 68,
          physiqueScore: 6,
          physiqueTargeting: { enabled: true, minScore: 4, maxScore: 7 },
          sourceImageUrl: 'https://i.redd.it/post-1.jpg',
          strategyId: null,
          experimentId: null,
          promptVersion: null,
          selectionReason: null,
          modelId: 'operator-edited',
          toneId: 'direct',
          scripted: false,
          operatorEdited: true,
        }, priority: 2, status: 'sending',
        discoveredAt: 1_000, updatedAt: 2_000, availableAt: 2_000,
        leaseOwner: 'worker-secret', leaseExpiresAt: 3_000, assignedAccountId: 'account-a',
        attemptCount: 2, lastError: null,
      }]),
    };
    const context = {
      runtimeConfig: { reddit: { physiqueTargeting: { enabled: true, minScore: 1, maxScore: 6 } } },
      services: {
        candidateQueue,
        redditAccounts: { list: () => [{ accountId: 'account-a', redditUsername: 'operator' }] },
      },
    } as unknown as WebContext;
    const app = express().use('/api', createOutreachRouter(context));

    const response = await request(app, '/api/outreach');
    const body: unknown = await response.json();
    const parsed = OutreachFunnelResponseSchema.parse(body);

    expect(response.status).toBe(200);
    expect(parsed).toMatchObject({
      activeCount: 6,
      stages: { discovered: 2, screening: 1, ready: 1, sending: 1, retryable: 1 },
      outcomes: { sent: 2, rejected: 1 },
      candidates: [{
        postId: 'post-1', status: 'sending', hasPreparedMessage: true,
        postUrl: 'https://www.reddit.com/r/example/comments/post-1/hello/',
        targetComment: {
          body: 'I wish that was me',
          permalink: 'https://www.reddit.com/r/example/comments/post-1/hello/comment-1/',
        },
        owner: { accountId: 'account-a', redditUsername: 'operator' },
        preparation: {
          message: 'Prepared opener for Alice',
          attractivenessScore: 68,
          physiqueScore: 6,
          physiqueTargeting: { enabled: true, minScore: 1, maxScore: 6 },
          sourceImageUrl: 'https://i.redd.it/post-1.jpg',
          strategyId: null,
          operatorEdited: true,
        },
      }],
    });
    expect(JSON.stringify(body)).not.toContain('worker-secret');
  });

  it('reports an unavailable queue instead of an empty funnel', async () => {
    const context = { services: {} } as unknown as WebContext;
    const app = express().use('/api', createOutreachRouter(context));

    const response = await request(app, '/api/outreach');

    expect(response.status).toBe(503);
    expect(await response.json()).toEqual({ error: 'Outreach queue not initialized' });
  });

  it('clears unsent candidates, reports retained sends, and records the operator action', async () => {
    const clearUnsent = vi.fn(() => ({
      discovered: 2, screening: 1, ready: 3, retryable: 1, total: 7, retainedSending: 1,
    }));
    const activity = { push: vi.fn() };
    const broadcaster = { push: vi.fn() };
    const context = {
      services: { candidateQueue: { clearUnsent } }, activity, broadcaster,
    } as unknown as WebContext;
    const app = express().use('/api', createOutreachRouter(context));

    const response = await request(app, '/api/outreach', { method: 'DELETE' });
    const parsed = OutreachClearResponseSchema.parse(await response.json());

    expect(response.status).toBe(200);
    expect(parsed).toEqual({
      success: true,
      cleared: { discovered: 2, screening: 1, ready: 3, retryable: 1, total: 7 },
      retainedSending: 1,
    });
    expect(clearUnsent).toHaveBeenCalledOnce();
    expect(activity.push).toHaveBeenCalledWith(
      'info', 'Cleared 7 unsent outreach candidate(s); retained 1 in-flight send(s)',
    );
    expect(broadcaster.push).toHaveBeenCalledWith(
      'warn',
      'Cleared 7 unsent outreach candidate(s); retained 1 in-flight send(s)',
      expect.objectContaining({ total: 7, retainedSending: 1 }),
    );
  });

  it('edits a prepared message and removes an individual unsent candidate', async () => {
    const updatePreparedMessage = vi.fn(() => 'updated' as const);
    const cancelUnsent = vi.fn(() => 'cancelled' as const);
    const activity = { push: vi.fn() };
    const broadcaster = { push: vi.fn() };
    const context = {
      services: { candidateQueue: { updatePreparedMessage, cancelUnsent } }, activity, broadcaster,
    } as unknown as WebContext;
    const app = express().use(express.json()).use('/api', createOutreachRouter(context));

    const editResponse = await request(app, '/api/outreach/post%2Fone/message', {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ message: '  A revised opener  ' }),
    });
    expect(OutreachMessageUpdateResponseSchema.parse(await editResponse.json())).toEqual({
      success: true, postId: 'post/one', message: 'A revised opener',
    });
    expect(updatePreparedMessage).toHaveBeenCalledWith('post/one', 'A revised opener');

    const deleteResponse = await request(app, '/api/outreach/post%2Fone', { method: 'DELETE' });
    expect(OutreachCandidateDeleteResponseSchema.parse(await deleteResponse.json())).toEqual({
      success: true, postId: 'post/one',
    });
    expect(cancelUnsent).toHaveBeenCalledWith('post/one');
    expect(activity.push).toHaveBeenCalledTimes(2);
  });

  it('rejects unsafe edits and stale mutations that reached the sending boundary', async () => {
    const updatePreparedMessage = vi.fn(() => 'not-editable' as const);
    const cancelUnsent = vi.fn(() => 'not-cancellable' as const);
    const context = {
      services: { candidateQueue: { updatePreparedMessage, cancelUnsent } },
      activity: { push: vi.fn() }, broadcaster: { push: vi.fn() },
    } as unknown as WebContext;
    const app = express().use(express.json()).use('/api', createOutreachRouter(context));

    const unsafe = await request(app, '/api/outreach/p1/message', {
      method: 'PATCH', headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ message: 'We should meet tonight' }),
    });
    expect(unsafe.status).toBe(400);
    expect(updatePreparedMessage).not.toHaveBeenCalled();

    const staleEdit = await request(app, '/api/outreach/p1/message', {
      method: 'PATCH', headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ message: 'A safe revised message' }),
    });
    expect(staleEdit.status).toBe(409);
    const staleDelete = await request(app, '/api/outreach/p1', { method: 'DELETE' });
    expect(staleDelete.status).toBe(409);
  });
});