import express from 'express';
import type { AddressInfo } from 'node:net';
import { afterEach, describe, expect, it } from 'vitest';
import { MessagesResponseSchema, StatsResponseSchema } from '../../packages/api-contracts/src/index.js';
import type { WebContext } from '../../src/web/context.js';
import { createStatsRouter } from '../../src/web/routes/stats.js';

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

async function request(app: express.Express, path: string): 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}`);
}

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

describe('stats route account status', () => {
  it('reports sending availability and Matrix cooldown independently for every account', async () => {
    const now = Date.now();
    const account = (
      accountId: string,
      redditUsername: string,
      cooldown: { until: number; reason: string; redditCode: string | null; setAt: number } | null,
    ) => ({
      session: { accountId, redditUsername },
      resources: {
        accountAuth: { isFullyAuthenticated: () => true },
        chatService: { getInvitationCooldown: () => cooldown },
        rateLimiter: {
          getStats: () => ({ messagesThisHour: cooldown ? 5 : 2, minutesSinceLastMessage: 1 }),
          getTimers: () => ({
            nextMessageAvailableAt: cooldown?.until ?? null,
            hourlyResetAt: now + 3_600_000,
            isHourlyLimitReached: false,
            messagesRemaining: cooldown ? 3 : 6,
          }),
        },
        conversationAutomation: { getPriorityStatus: () => ({ processing: false, actionableBacklog: 0 }) },
        messagesRepo: { getRecent: () => [] },
        activityLogRepo: { getRecent: () => [], countSentSkipped: () => 0 },
      },
    });
    const ready = account('@t2_ready:reddit.com', 'ready-account', null);
    const limited = account('@t2_limited:reddit.com', 'limited-account', {
      until: now + 600_000,
      reason: 'Matrix rate-limited: M_LIMIT_EXCEEDED',
      redditCode: 'rate.invitation_limit_mature_account',
      setAt: now,
    });
    const runtimes = new Map([[ready.session.accountId, ready], [limited.session.accountId, limited]]);
    const context = {
      config: {
        browser: { dryRun: false },
        rateLimit: { maxMessagesPerHour: 8 },
        reddit: { subreddits: [], targetGenders: [] },
      },
      services: {
        redditAccounts: { list: () => [...runtimes.values()].map((runtime) => runtime.session) },
        accountRuntimes: {
          list: () => [...runtimes.values()].map((runtime) => ({
            ...runtime.session,
            matrixUserId: runtime.session.accountId,
            state: 'running',
            updatedAt: now,
            failure: null,
          })),
          get: (accountId: string) => runtimes.get(accountId) ?? null,
        },
      },
      repos: { messages: { getRecent: () => [] } },
      activity: { recent: () => [], totalProcessed: () => 0 },
      getBotRunning: () => true,
      getBotMode: () => 'running',
      getMessagesThisHour: () => 0,
    } as unknown as WebContext;
    const app = express().use('/api', createStatsRouter(context));

    const response = await request(app, '/api/stats');
    const stats = StatsResponseSchema.parse(await response.json());

    expect(stats.accounts).toEqual([
      expect.objectContaining({ redditUsername: 'ready-account', sendingState: 'ready', messagesThisHour: 2 }),
      expect.objectContaining({
        redditUsername: 'limited-account',
        sendingState: 'matrix-cooldown',
        invitationCooldown: expect.objectContaining({ reason: 'Matrix rate-limited: M_LIMIT_EXCEEDED' }),
      }),
    ]);
    expect(stats.invitationCooldown).toMatchObject({ redditUsername: 'limited-account' });
    expect(stats.accounts[1]?.invitationCooldown).not.toHaveProperty('setAt');
  });
});

describe('messages route contract', () => {
  it('accepts the attribution fields the learning loop adds to sent messages', async () => {
    const context = {
      services: {},
      repos: {
        messages: {
          getRecent: () => [{
            id: 1,
            postId: 'p1',
            recipient: 'someone',
            subject: 'hey',
            message: 'hello there',
            sentAt: 1_700_000_000_000,
            gotResponse: true,
            gotImage: true,
            responseCheckedAt: 1_700_000_100_000,
            strategyId: null,
            chatRoomId: '!room:reddit.com',
            // Added by the conversation learning loop; must not break the dashboard.
            matrixEventId: '$opener1',
            imageOutcomeCredit: 'human-created-success',
            imageOutcomeAt: 1_700_000_200_000,
          }],
        },
      },
      activity: { recent: () => [], totalProcessed: () => 0 },
      getBotRunning: () => true,
      getBotMode: () => 'running',
      getMessagesThisHour: () => 0,
    } as unknown as WebContext;
    const app = express().use('/api', createStatsRouter(context));

    const response = await request(app, '/api/messages');
    const messages = MessagesResponseSchema.parse(await response.json());

    expect(messages[0]?.matrixEventId).toBe('$opener1');
    expect(messages[0]?.imageOutcomeCredit).toBe('human-created-success');
    expect(messages[0]?.imageOutcomeAt).toBe(1_700_000_200_000);
  });
});