/**
 * Tests integration DocmostClient contre un faux serveur HTTP local.
 *
 * Choix : meme rationale que baserow-client.test.ts — Docmost reel boote en
 * 90s+ et requiert Postgres + Redis, trop couteux pour CI rapide. On simule
 * /api/auth/login (cookie session), les endpoints POST envelope { data: ... }
 * et le flow re-auth sur 401. Coverage attendue >= 70% lines+branches.
 */

import pino from 'pino';
import { afterAll, beforeAll, beforeEach, describe, expect, it } from 'vitest';
import { DocmostClient } from '../../src/adapters/docmost-client.js';
import { type FakeHttpServer, jsonResponse, startFakeHttpServer } from '../helpers/http-server.js';

const silentLogger = () => pino({ level: 'silent' });

const FAKE_COOKIE = 'authToken=fake-session-id-123';

function setupLoginRoute(server: FakeHttpServer, ok = true): void {
  server.setRoute('POST', '/api/auth/login', (_req, res, body) => {
    if (!ok) {
      res.statusCode = 401;
      res.end(JSON.stringify({ error: 'invalid creds' }));
      return;
    }
    const parsed = JSON.parse(body);
    if (!parsed.email || !parsed.password) {
      jsonResponse(res, 400, { error: 'missing fields' });
      return;
    }
    res.setHeader('set-cookie', `${FAKE_COOKIE}; Path=/; HttpOnly`);
    jsonResponse(res, 200, { user: { id: 'u-1' } });
  });
}

describe('DocmostClient integration', () => {
  let server: FakeHttpServer;
  let client: DocmostClient;
  const EMAIL = 'admin@test.local';
  const PASSWORD = 'password-123';

  beforeAll(async () => {
    server = await startFakeHttpServer();
  });

  afterAll(async () => {
    await server.stop();
  });

  beforeEach(() => {
    server.reset();
    client = new DocmostClient({
      baseUrl: server.url,
      email: EMAIL,
      password: PASSWORD,
      logger: silentLogger(),
    });
  });

  describe('auth flow', () => {
    it('login auto au premier call + reuse du cookie sur les suivants', async () => {
      setupLoginRoute(server);
      server.setRoute('POST', '/api/workspace/info', (_req, res) => {
        jsonResponse(res, 200, { data: { id: 'w-1', name: 'Acme', defaultSpaceId: 's-1' } });
      });

      const w1 = await client.getWorkspaceInfo();
      const w2 = await client.getWorkspaceInfo();

      expect(w1.id).toBe('w-1');
      expect(w2.id).toBe('w-1');
      // 1 login + 2 workspace/info = 3 reqs
      expect(server.requests).toHaveLength(3);
      expect(server.requests[0]?.path).toBe('/api/auth/login');
      // Verifie que le cookie est passe sur les requetes suivantes
      expect(server.requests[1]?.headers.cookie).toBe(FAKE_COOKIE);
      expect(server.requests[2]?.headers.cookie).toBe(FAKE_COOKIE);
    });

    it('login en echec → AUTH_INVALID', async () => {
      setupLoginRoute(server, false);
      server.setRoute('POST', '/api/workspace/info', (_req, res) => {
        jsonResponse(res, 200, { data: {} });
      });

      await expect(client.getWorkspaceInfo()).rejects.toMatchObject({
        code: 'AUTH_INVALID',
        status: 401,
      });
    });

    it('re-auth automatique sur 401 puis retry', async () => {
      let loginCount = 0;
      server.setRoute('POST', '/api/auth/login', (_req, res) => {
        loginCount += 1;
        res.setHeader('set-cookie', `${FAKE_COOKIE}-v${loginCount}; Path=/`);
        jsonResponse(res, 200, { user: { id: 'u-1' } });
      });

      let infoCount = 0;
      server.setRoute('POST', '/api/workspace/info', (_req, res) => {
        infoCount += 1;
        if (infoCount === 1) {
          // Premier call : 401 → trigger re-auth
          jsonResponse(res, 401, { error: 'session expired' });
          return;
        }
        jsonResponse(res, 200, { data: { id: 'w-2', name: 'X', defaultSpaceId: 's-2' } });
      });

      const w = await client.getWorkspaceInfo();

      expect(w.id).toBe('w-2');
      expect(loginCount).toBe(2); // login initial + re-auth
      expect(infoCount).toBe(2); // appel echoue + retry
    });
  });

  describe('payload envelope', () => {
    it('unwrap automatique de { data: T }', async () => {
      setupLoginRoute(server);
      server.setRoute('POST', '/api/spaces/', (_req, res) => {
        jsonResponse(res, 200, {
          data: {
            items: [
              {
                id: 's-1',
                name: 'Default',
                slug: 'default',
                visibility: 'open',
                workspaceId: 'w-1',
              },
            ],
          },
        });
      });

      const spaces = await client.listSpaces();

      expect(spaces).toHaveLength(1);
      expect(spaces[0]?.id).toBe('s-1');
    });

    it('passe-through si pas de { data } dans la reponse', async () => {
      setupLoginRoute(server);
      server.setRoute('POST', '/api/workspace/info', (_req, res) => {
        // Reponse "plate" sans envelope
        jsonResponse(res, 200, { id: 'w-flat', name: 'Flat', defaultSpaceId: 's-x' });
      });

      const w = await client.getWorkspaceInfo();
      expect(w.id).toBe('w-flat');
    });
  });

  describe('Spaces CRUD', () => {
    beforeEach(() => setupLoginRoute(server));

    it('listSpaces avec pagination defaut + retourne items vide si manquant', async () => {
      server.setRoute('POST', '/api/spaces/', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed).toEqual({ page: 1, limit: 100 });
        jsonResponse(res, 200, { data: {} });
      });

      const result = await client.listSpaces();
      expect(result).toEqual([]);
    });

    it('createSpace propage payload + defaults', async () => {
      server.setRoute('POST', '/api/spaces/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        jsonResponse(res, 200, {
          data: {
            id: 'new-s',
            name: parsed.name,
            slug: parsed.slug,
            visibility: parsed.visibility,
            workspaceId: 'w-1',
          },
        });
      });

      const s = await client.createSpace({ name: 'Promo 2026', slug: 'promo-2026' });

      expect(s.id).toBe('new-s');
      expect(s.visibility).toBe('open'); // default
      const reqBody = JSON.parse(server.requests[1]?.body ?? '{}');
      expect(reqBody.description).toBe(''); // default
      expect(reqBody.visibility).toBe('open');
    });

    it('createSpace respecte visibility=private', async () => {
      server.setRoute('POST', '/api/spaces/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        jsonResponse(res, 200, {
          data: {
            id: 'p',
            name: parsed.name,
            slug: parsed.slug,
            visibility: parsed.visibility,
            workspaceId: 'w-1',
          },
        });
      });

      const s = await client.createSpace({
        name: 'Secret',
        slug: 'secret',
        description: 'classified',
        visibility: 'private',
      });

      expect(s.visibility).toBe('private');
      const reqBody = JSON.parse(server.requests[1]?.body ?? '{}');
      expect(reqBody.description).toBe('classified');
    });

    it('addSpaceMember envoie spaceId, userEmails, role', async () => {
      server.setRoute('POST', '/api/spaces/members/add', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed).toEqual({
          spaceId: 'sp-1',
          userEmails: ['a@x.fr', 'b@x.fr'],
          role: 'reader',
        });
        jsonResponse(res, 200, { data: {} });
      });

      await client.addSpaceMember('sp-1', ['a@x.fr', 'b@x.fr'], 'reader');
      // Pas d'assertion supplementaire — l'absence de throw + l'assert dans handler suffit
    });

    it('addSpaceMember role par defaut writer', async () => {
      server.setRoute('POST', '/api/spaces/members/add', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.role).toBe('writer');
        jsonResponse(res, 200, { data: {} });
      });

      await client.addSpaceMember('sp-1', ['a@x.fr']);
    });
  });

  describe('Pages CRUD', () => {
    beforeEach(() => setupLoginRoute(server));

    it('createPage avec content + format markdown par defaut', async () => {
      server.setRoute('POST', '/api/pages/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        jsonResponse(res, 200, {
          data: {
            id: 'p-1',
            title: parsed.title,
            spaceId: parsed.spaceId,
            parentPageId: parsed.parentPageId ?? null,
            position: 1,
          },
        });
      });

      const page = await client.createPage({
        spaceId: 's-1',
        title: 'My Page',
        content: '# Hello',
      });

      expect(page.id).toBe('p-1');
      const reqBody = JSON.parse(server.requests[1]?.body ?? '{}');
      expect(reqBody.format).toBe('markdown');
      expect(reqBody.content).toBe('# Hello');
    });

    it('createPage sans content omet le champ', async () => {
      server.setRoute('POST', '/api/pages/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.content).toBeUndefined();
        jsonResponse(res, 200, {
          data: {
            id: 'p-2',
            title: parsed.title,
            spaceId: parsed.spaceId,
            parentPageId: null,
            position: 0,
          },
        });
      });

      await client.createPage({ spaceId: 's-1', title: 'Empty' });
    });

    it('createPage avec parentPageId et format html', async () => {
      server.setRoute('POST', '/api/pages/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.parentPageId).toBe('parent-1');
        expect(parsed.format).toBe('html');
        jsonResponse(res, 200, {
          data: {
            id: 'p-3',
            title: parsed.title,
            spaceId: parsed.spaceId,
            parentPageId: parsed.parentPageId,
            position: 2,
          },
        });
      });

      const page = await client.createPage({
        spaceId: 's-1',
        title: 'Sub',
        parentPageId: 'parent-1',
        format: 'html',
        content: '<p>x</p>',
      });

      expect(page.parentPageId).toBe('parent-1');
    });

    it('getPageInfo POST avec pageId', async () => {
      server.setRoute('POST', '/api/pages/info', (_req, res, body) => {
        const parsed = JSON.parse(body);
        jsonResponse(res, 200, {
          data: {
            id: parsed.pageId,
            title: 'Got',
            spaceId: 's-1',
            parentPageId: null,
            position: null,
          },
        });
      });

      const p = await client.getPageInfo('p-99');
      expect(p.id).toBe('p-99');
      expect(p.title).toBe('Got');
    });

    it('updatePage propage le payload', async () => {
      server.setRoute('POST', '/api/pages/update', (_req, res, body) => {
        const parsed = JSON.parse(body);
        jsonResponse(res, 200, {
          data: {
            id: parsed.pageId,
            title: parsed.title,
            spaceId: 's-1',
            parentPageId: null,
            position: null,
          },
        });
      });

      const p = await client.updatePage({ pageId: 'p-1', title: 'New Title' });
      expect(p.title).toBe('New Title');
    });

    it('deletePage POST sans return', async () => {
      server.setRoute('POST', '/api/pages/delete', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.pageId).toBe('p-zap');
        jsonResponse(res, 200, { data: {} });
      });

      await expect(client.deletePage('p-zap')).resolves.toBeUndefined();
    });
  });

  describe('Shares', () => {
    beforeEach(() => setupLoginRoute(server));

    it('createShare avec defaults', async () => {
      server.setRoute('POST', '/api/shares/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.includeSubPages).toBe(false);
        jsonResponse(res, 200, { data: { id: 'sh-1', pageId: parsed.pageId } });
      });

      const sh = await client.createShare({ pageId: 'p-1' });
      expect(sh.id).toBe('sh-1');
    });

    it('createShare avec password + expiresAt', async () => {
      server.setRoute('POST', '/api/shares/create', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.password).toBe('s3cret');
        expect(parsed.expiresAt).toBe('2026-12-31T00:00:00Z');
        expect(parsed.includeSubPages).toBe(true);
        jsonResponse(res, 200, {
          data: { id: 'sh-2', pageId: parsed.pageId, expiresAt: parsed.expiresAt },
        });
      });

      const sh = await client.createShare({
        pageId: 'p-9',
        password: 's3cret',
        expiresAt: '2026-12-31T00:00:00Z',
        includeSubPages: true,
      });
      expect(sh.id).toBe('sh-2');
    });

    it('deleteShare POST', async () => {
      server.setRoute('POST', '/api/shares/delete', (_req, res, body) => {
        const parsed = JSON.parse(body);
        expect(parsed.shareId).toBe('sh-zap');
        jsonResponse(res, 200, { data: {} });
      });

      await expect(client.deleteShare('sh-zap')).resolves.toBeUndefined();
    });
  });

  describe('error mapping', () => {
    beforeEach(() => setupLoginRoute(server));

    it('404 → NOT_FOUND', async () => {
      server.setRoute('POST', '/api/pages/info', (_req, res) => {
        jsonResponse(res, 404, { error: 'page gone' });
      });

      await expect(client.getPageInfo('nope')).rejects.toMatchObject({
        code: 'NOT_FOUND',
        status: 404,
      });
    });

    it('reseau down → DOCMOST_UNAVAILABLE', async () => {
      const dead = new DocmostClient({
        baseUrl: 'http://127.0.0.1:1',
        email: EMAIL,
        password: PASSWORD,
        logger: silentLogger(),
      });

      // Login va echouer en reseau → throw AUTH_INVALID via response check.
      // En vrai, fetch natif va throw, donc on s attend a un throw quel qu il soit.
      await expect(dead.getWorkspaceInfo()).rejects.toBeDefined();
    }, 15_000);
  });

  describe('healthCheck', () => {
    it('retourne true si /api/health renvoie status:ok', async () => {
      server.setRoute('GET', '/api/health', (_req, res) => {
        jsonResponse(res, 200, { status: 'ok' });
      });

      expect(await client.healthCheck()).toBe(true);
    });

    it('retourne false si status != ok', async () => {
      server.setRoute('GET', '/api/health', (_req, res) => {
        jsonResponse(res, 200, { status: 'degraded' });
      });

      expect(await client.healthCheck()).toBe(false);
    });

    it('retourne false si serveur down', async () => {
      const dead = new DocmostClient({
        baseUrl: 'http://127.0.0.1:1',
        email: EMAIL,
        password: PASSWORD,
        logger: silentLogger(),
      });
      expect(await dead.healthCheck()).toBe(false);
    });
  });

  describe('baseUrl trailing slash', () => {
    it('strip le / final', async () => {
      setupLoginRoute(server);
      server.setRoute('POST', '/api/workspace/info', (_req, res) => {
        jsonResponse(res, 200, { data: { id: 'w', name: 'x', defaultSpaceId: 's' } });
      });

      const c = new DocmostClient({
        baseUrl: `${server.url}/`,
        email: EMAIL,
        password: PASSWORD,
        logger: silentLogger(),
      });

      await c.getWorkspaceInfo();
      // Pas de // dans le path login
      expect(server.requests[0]?.path).toBe('/api/auth/login');
    });
  });
});