import { Hono } from 'hono';
import { beforeEach, describe, expect, it, vi } from 'vitest';

const { db } = vi.hoisted(() => {
  return {
    db: {
      group: {
        findMany: vi.fn(),
        findFirst: vi.fn(),
        count: vi.fn(),
        create: vi.fn(),
      },
      groupMember: {
        create: vi.fn(),
      },
      organization: {
        findUnique: vi.fn(),
      },
    } as {
      group: {
        findMany: ReturnType<typeof vi.fn>;
        findFirst: ReturnType<typeof vi.fn>;
        count: ReturnType<typeof vi.fn>;
        create: ReturnType<typeof vi.fn>;
      };
      groupMember: { create: ReturnType<typeof vi.fn> };
      organization: { findUnique: ReturnType<typeof vi.fn> };
    },
  };
});

vi.mock('@/lib/prisma', () => ({
  default: db,
  getPrismaClient: vi.fn(),
  UnitOfWork: class {
    executeResult = vi.fn(
      async (cb: (tx: unknown) => Promise<unknown>) => cb(db),
    );
    execute = vi.fn(
      async (cb: (tx: unknown) => Promise<unknown>) => cb(db),
    );
  },
}));

import prisma from '@/lib/prisma';
import { groupsRoutes } from '@/modules/groups';

const userId = 'user-1';
const group = {
  id: 'group-1',
  name: 'Cuadrilla Alfa',
  description: null,
  createdById: userId,
  createdAt: new Date('2026-08-01T10:00:00.000Z'),
  updatedAt: new Date('2026-08-01T10:00:00.000Z'),
};

function makeApp(userValue: unknown) {
  const app = new Hono();
  app.use('*', async (c, next) => {
    c.set('user', userValue as never);
    await next();
  });
  app.route('/groups', groupsRoutes);
  return app;
}

describe('groups routes', () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it('lists groups scoped to the current user', async () => {
    vi.mocked(prisma.group.findMany).mockResolvedValue([group]);
    vi.mocked(prisma.group.count).mockResolvedValue(1);

    const res = await makeApp({ id: userId }).request('/groups');

    expect(res.status).toBe(200);
    expect(await res.json()).toEqual({
      data: [
        {
          ...group,
          createdAt: group.createdAt.toISOString(),
          updatedAt: group.updatedAt.toISOString(),
        },
      ],
      pagination: { page: 1, pageSize: 10, total: 1, totalPages: 1 },
    });
    const where = {
      OR: [{ createdById: userId }, { members: { some: { userId } } }],
    };
    expect(prisma.group.findMany).toHaveBeenCalledWith({
      where,
      skip: 0,
      take: 10,
      orderBy: { createdAt: 'desc' },
    });
    expect(prisma.group.count).toHaveBeenCalledWith({ where });
  });

  it('rejects listing groups without a session', async () => {
    const res = await makeApp(null).request('/groups');

    expect(res.status).toBe(401);
    expect(await res.json()).toMatchObject({ code: 'unauthorized' });
  });

  it('rejects invalid pagination query parameters', async () => {
    const res = await makeApp({ id: userId }).request('/groups?pageSize=101');

    expect(res.status).toBe(400);
  });

  it('creates a group from an owned organization', async () => {
    const organization = {
      id: 'org-1',
      name: 'Escuela Alfa',
      members: [{ userId, role: 'owner' }],
    };
    vi.mocked(prisma.organization.findUnique).mockResolvedValue(organization as never);
    vi.mocked(prisma.group.findFirst).mockResolvedValue(null);
    vi.mocked(prisma.group.create).mockResolvedValue(group);

    const res = await makeApp({ id: userId }).request('/groups/from-organization', {
      method: 'POST',
      body: JSON.stringify({ organizationId: 'org-1' }),
      headers: { 'Content-Type': 'application/json' },
    });

    expect(res.status).toBe(201);
    expect(await res.json()).toEqual({
      group: {
        ...group,
        createdAt: group.createdAt.toISOString(),
        updatedAt: group.updatedAt.toISOString(),
      },
      alreadyExists: false,
    });
    expect(prisma.group.create).toHaveBeenCalledWith({
      data: { name: 'Escuela Alfa', createdById: userId },
    });
  });

  it('reuses an existing group with the same name', async () => {
    const organization = {
      id: 'org-1',
      name: 'Escuela Alfa',
      members: [{ userId, role: 'owner' }],
    };
    vi.mocked(prisma.organization.findUnique).mockResolvedValue(organization as never);
    vi.mocked(prisma.group.findFirst).mockResolvedValue(group);

    const res = await makeApp({ id: userId }).request('/groups/from-organization', {
      method: 'POST',
      body: JSON.stringify({ organizationId: 'org-1' }),
      headers: { 'Content-Type': 'application/json' },
    });

    expect(res.status).toBe(200);
    const body = await res.json();
    expect(body.alreadyExists).toBe(true);
    expect(prisma.group.create).not.toHaveBeenCalled();
  });

  it('rejects creating a group for an unknown organization', async () => {
    vi.mocked(prisma.organization.findUnique).mockResolvedValue(null);

    const res = await makeApp({ id: userId }).request('/groups/from-organization', {
      method: 'POST',
      body: JSON.stringify({ organizationId: 'missing' }),
      headers: { 'Content-Type': 'application/json' },
    });

    expect(res.status).toBe(404);
    expect(await res.json()).toMatchObject({ code: 'organization_not_found' });
    expect(prisma.group.create).not.toHaveBeenCalled();
  });

  it('rejects creating a group when the user is not the owner', async () => {
    const organization = {
      id: 'org-1',
      name: 'Escuela Alfa',
      members: [{ userId: 'other-user', role: 'owner' }],
    };
    vi.mocked(prisma.organization.findUnique).mockResolvedValue(organization as never);

    const res = await makeApp({ id: userId }).request('/groups/from-organization', {
      method: 'POST',
      body: JSON.stringify({ organizationId: 'org-1' }),
      headers: { 'Content-Type': 'application/json' },
    });

    expect(res.status).toBe(403);
    expect(await res.json()).toMatchObject({ code: 'group_owner_required' });
    expect(prisma.group.create).not.toHaveBeenCalled();
  });

  it('rejects creating a group without a session', async () => {
    const res = await makeApp(null).request('/groups/from-organization', {
      method: 'POST',
      body: JSON.stringify({ organizationId: 'org-1' }),
      headers: { 'Content-Type': 'application/json' },
    });

    expect(res.status).toBe(401);
  });
});