/**
 * Tests R4.1 timeline-config endpoints.
 *
 * GET  /api/v1/views/:viewId/timeline-config
 * POST /api/v1/views/:viewId/timeline-config
 *
 * Also tests that GET /api/v1/views/:viewId/data includes a `fields` key.
 */

import { afterEach, describe, expect, it, vi } from 'vitest';
import type { RedisCache } from '../../src/adapters/redis-cache.js';
import { Row } from '../../src/domain/row.js';
import { View } from '../../src/domain/view.js';
import type { RepoSet } from '../../src/lib/container.js';
import { errors } from '../../src/lib/errors.js';
import type { ViewDataResult } from '../../src/repos/baserow-views-repo.js';
import type { TimelineConfig } from '../../src/routes/views.js';
import {
  ADMIN_TOKEN,
  READ_TOKEN,
  WRITE_TOKEN,
  buildTestApp,
  installTestContainer,
  resetTestContainer,
} from '../helpers/test-app.js';

// ---------------------------------------------------------------------------
// Fake repos (minimal subset needed here)
// ---------------------------------------------------------------------------

class FakeTablesRepo {
  async list(_db: number) { return []; }
  async get(_id: number) { throw errors.notFound('Table', _id); }
}

class FakeFieldsRepo {
  async list(_tableId: number) { return []; }
}

class FakeRowsRepo {
  async list(_tableId: number) {
    return { items: [], meta: { page: 1, per_page: 50, total: 0, total_pages: 1 } };
  }
  async get(_tableId: number, rowId: number): Promise<Row> {
    throw errors.notFound('Row', rowId);
  }
  async create(tableId: number, fields: Record<string, unknown>): Promise<Row> {
    return new Row({ id: 1, tableId, fields });
  }
  async update(tableId: number, rowId: number, fields: Record<string, unknown>): Promise<Row> {
    return new Row({ id: rowId, tableId, fields });
  }
  async delete(_tableId: number, _rowId: number): Promise<void> {}
}

class FakeViewsRepo {
  constructor(
    private viewDataByView: Map<number, ViewDataResult> = new Map(),
  ) {}
  async list(_tableId: number): Promise<View[]> { return []; }
  async listByTable(_tableId: number): Promise<View[]> { return []; }
  async runGrid(_viewId: number, _tableId: number) {
    return { items: [], meta: { page: 1, per_page: 50, total: 0, total_pages: 1 } };
  }
  async getViewData(viewId: number, _tableId: number, opts: { page?: number; size?: number } = {}): Promise<ViewDataResult> {
    const result = this.viewDataByView.get(viewId);
    if (!result) {
      return { items: [], meta: { page: opts.page ?? 1, per_page: opts.size ?? 100, total: 0, total_pages: 1 }, viewType: 'grid' };
    }
    return result;
  }
}

// ---------------------------------------------------------------------------
// Redis stub with controllable storage
// ---------------------------------------------------------------------------

class FakeRedis {
  private store: Map<string, string> = new Map();

  async get<T>(key: string): Promise<T | null> {
    const raw = this.store.get(key);
    if (!raw) return null;
    return JSON.parse(raw) as T;
  }

  async set<T>(key: string, value: T, _ttl?: number): Promise<void> {
    this.store.set(key, JSON.stringify(value));
  }

  async del(key: string | string[]): Promise<void> {
    const keys = Array.isArray(key) ? key : [key];
    for (const k of keys) this.store.delete(k);
  }

  async invalidatePattern(_p: string): Promise<number> { return 0; }
  async checkRateLimit(): Promise<boolean> { return true; }
  getClient() { return { xadd: async () => '0-0' }; }
}

function buildFakeRepos(viewDataByView?: Map<number, ViewDataResult>): RepoSet {
  return {
    tables: new FakeTablesRepo() as unknown as RepoSet['tables'],
    fields: new FakeFieldsRepo() as unknown as RepoSet['fields'],
    views: new FakeViewsRepo(viewDataByView) as unknown as RepoSet['views'],
    rows: new FakeRowsRepo() as unknown as RepoSet['rows'],
  };
}

function bootApp(redis?: FakeRedis, viewDataByView?: Map<number, ViewDataResult>) {
  const repos = buildFakeRepos(viewDataByView);
  const fakeRedis = redis ?? new FakeRedis();
  const container = installTestContainer({ repos, redis: fakeRedis as unknown as RedisCache });
  return { app: buildTestApp(container), redis: fakeRedis };
}

afterEach(resetTestContainer);

// ---------------------------------------------------------------------------
// GET /api/v1/views/:viewId/timeline-config
// ---------------------------------------------------------------------------

describe('GET /api/v1/views/:viewId/timeline-config', () => {
  it('401 sans token', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config');
    expect(res.status).toBe(401);
  });

  it('returns null when no config stored', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config', {
      headers: { Authorization: `Bearer ${READ_TOKEN}` },
    });
    expect(res.status).toBe(200);
    const body = (await res.json()) as { data: null };
    expect(body.data).toBeNull();
  });

  it('returns stored config', async () => {
    const redis = new FakeRedis();
    const config: TimelineConfig = {
      startCol: 'Start',
      endCol: 'End',
      resourceCol: null,
      titleCol: 'Name',
    };
    await redis.set('bridge:timeline-config:42', config);
    const { app } = bootApp(redis);
    const res = await app.request('/api/v1/views/42/timeline-config', {
      headers: { Authorization: `Bearer ${READ_TOKEN}` },
    });
    expect(res.status).toBe(200);
    const body = (await res.json()) as { data: TimelineConfig };
    expect(body.data.startCol).toBe('Start');
    expect(body.data.titleCol).toBe('Name');
    expect(body.data.endCol).toBe('End');
    expect(body.data.resourceCol).toBeNull();
  });

  it('400 si viewId invalide', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/abc/timeline-config', {
      headers: { Authorization: `Bearer ${READ_TOKEN}` },
    });
    expect(res.status).toBe(400);
  });
});

// ---------------------------------------------------------------------------
// POST /api/v1/views/:viewId/timeline-config
// ---------------------------------------------------------------------------

describe('POST /api/v1/views/:viewId/timeline-config', () => {
  it('401 sans token', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ startCol: 'Start', titleCol: 'Name' }),
    });
    expect(res.status).toBe(401);
  });

  it('403 sans scope write:tables (read-only token)', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${READ_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ startCol: 'Start', titleCol: 'Name' }),
    });
    expect(res.status).toBe(403);
  });

  it('400 si startCol absent', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${WRITE_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ titleCol: 'Name' }),
    });
    expect(res.status).toBe(400);
  });

  it('400 si titleCol absent', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/1/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${WRITE_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ startCol: 'Start' }),
    });
    expect(res.status).toBe(400);
  });

  it('200 sauvegarde config minimale (sans endCol ni resourceCol)', async () => {
    const redis = new FakeRedis();
    const { app } = bootApp(redis);
    const res = await app.request('/api/v1/views/10/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${WRITE_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ startCol: 'Start', titleCol: 'Name' }),
    });
    expect(res.status).toBe(200);
    const body = (await res.json()) as { data: TimelineConfig };
    expect(body.data.startCol).toBe('Start');
    expect(body.data.titleCol).toBe('Name');
    expect(body.data.endCol).toBeNull();
    expect(body.data.resourceCol).toBeNull();

    // Verify persisted in Redis.
    const stored = await redis.get<TimelineConfig>('bridge:timeline-config:10');
    expect(stored?.startCol).toBe('Start');
  });

  it('200 sauvegarde config complete avec endCol et resourceCol', async () => {
    const redis = new FakeRedis();
    const { app } = bootApp(redis);
    const payload = {
      startCol: 'Start',
      endCol: 'Deadline',
      resourceCol: 'Team',
      titleCol: 'Task',
    };
    const res = await app.request('/api/v1/views/20/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${WRITE_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(payload),
    });
    expect(res.status).toBe(200);
    const body = (await res.json()) as { data: TimelineConfig };
    expect(body.data.endCol).toBe('Deadline');
    expect(body.data.resourceCol).toBe('Team');
  });

  it('admin token peut sauvegarder', async () => {
    const { app } = bootApp();
    const res = await app.request('/api/v1/views/5/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${ADMIN_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ startCol: 'S', titleCol: 'T' }),
    });
    expect(res.status).toBe(200);
  });

  it('ecrase config existante', async () => {
    const redis = new FakeRedis();
    await redis.set('bridge:timeline-config:7', { startCol: 'Old', titleCol: 'OldTitle', endCol: null, resourceCol: null });
    const { app } = bootApp(redis);
    const res = await app.request('/api/v1/views/7/timeline-config', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${WRITE_TOKEN}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ startCol: 'New', titleCol: 'NewTitle' }),
    });
    expect(res.status).toBe(200);
    const stored = await redis.get<TimelineConfig>('bridge:timeline-config:7');
    expect(stored?.startCol).toBe('New');
    expect(stored?.titleCol).toBe('NewTitle');
  });
});