import { NotFoundException } from '@nestjs/common';
import { describe, expect, it, vi } from 'vitest';
import { TendersController } from './tenders.controller';

/**
 * TendersController.spec — automated proof for INGEST-06 and the
 * tenant-gated-not-scoped invariant (RESEARCH.md V4, T-10-14):
 *
 * - The global read path (`GET /`) never adds the tenant's id to the
 *   prisma `where` clause — the catalog is platform-wide, not row-scoped.
 * - Saving the admin source-config drives the scheduler's setInterval()
 *   (single argument, no tenant id) / stopJob() exactly as the DKV analog
 *   does, minus the tenant argument.
 *
 * Uses the same hand-rolled prisma-shaped fake convention as
 * tender-ingestion.service.spec.ts / tender-scheduler.service.spec.ts
 * (in-memory fakes, no live DB connection).
 */

function makeFakePrisma() {
  const tenders = new Map<string, any>();
  tenders.set('t1', {
    id: 't1',
    title: 'Beispielausschreibung',
    status: 'active',
    sourcePortal: 'doe-opendata',
  });
  const configs = new Map<string, any>();
  configs.set('doe-opendata', {
    id: 'cfg1',
    sourceType: 'doe-opendata',
    pollIntervalMin: 60,
    isActive: true,
    lastIngestedDay: null,
  });

  return {
    tender: {
      findMany: vi.fn(async (_args?: any) => Array.from(tenders.values())),
      count: vi.fn(async (_args?: any) => tenders.size),
      findUnique: vi.fn(async ({ where }: any) => tenders.get(where.id) ?? null),
      groupBy: vi.fn(async (_args?: any) => [
        { sourcePortal: 'doe-opendata', _count: tenders.size },
      ]),
    },
    tenderSourcePollConfig: {
      findUnique: vi.fn(async ({ where }: any) => configs.get(where.sourceType) ?? null),
      upsert: vi.fn(async ({ where, update, create }: any) => {
        const existing = configs.get(where.sourceType);
        const record = existing ? { ...existing, ...update } : { ...create };
        configs.set(where.sourceType, record);
        return record;
      }),
    },
  };
}

describe('TendersController — global read (not tenant-scoped)', () => {
  it('GET / calls prisma.tender.findMany with a where clause that has no tenantId key', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.listTenders({});

    expect(prisma.tender.findMany).toHaveBeenCalledTimes(1);
    const callArgs = prisma.tender.findMany.mock.calls[0][0];
    expect(callArgs.where).not.toHaveProperty('tenantId');
  });

  it('GET /:id returns the tender when found and never scopes by tenant', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    const result = await controller.getTender('t1');

    expect(result.id).toBe('t1');
    const callArgs = prisma.tender.findUnique.mock.calls[0][0];
    expect(callArgs.where).toEqual({ id: 't1' });
  });

  it('GET /:id throws NotFoundException for a missing id', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await expect(controller.getTender('missing')).rejects.toBeInstanceOf(NotFoundException);
  });
});

describe('TendersController — admin source-config applies live to the scheduler (INGEST-06)', () => {
  it('PUT /source-config with isActive=true + pollIntervalMin=30 calls scheduler.setInterval(30) with a single argument', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.saveSourceConfig({ isActive: true, pollIntervalMin: 30 });

    expect(scheduler.setInterval).toHaveBeenCalledTimes(1);
    expect(scheduler.setInterval).toHaveBeenCalledWith(30);
    expect(scheduler.stopJob).not.toHaveBeenCalled();
  });

  it('PUT /source-config with isActive=false calls scheduler.stopJob()', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.saveSourceConfig({ isActive: false });

    expect(scheduler.stopJob).toHaveBeenCalledTimes(1);
    expect(scheduler.setInterval).not.toHaveBeenCalled();
  });
});

describe('TendersController — route declaration order (static route before :id)', () => {
  // Regression guard for the GET /source-config → 404 bug: NestJS RouterExplorer
  // maps routes in method-declaration order. When `@Get(':id')` is declared
  // before `@Get('source-config')`, the param route captures "source-config" as
  // an id and shadows the static handler — 401 unauthenticated, 404 once past the
  // guard (Tender "source-config" not found). Unit-calling the methods directly
  // (the tests above) bypasses routing and cannot catch this, so we assert the
  // declaration order explicitly.
  it('declares getSourceConfig before getTender so GET /:id cannot shadow it', () => {
    const methods = Object.getOwnPropertyNames(TendersController.prototype);
    const sourceConfigIdx = methods.indexOf('getSourceConfig');
    const idIdx = methods.indexOf('getTender');

    expect(sourceConfigIdx).toBeGreaterThanOrEqual(0);
    expect(idIdx).toBeGreaterThanOrEqual(0);
    expect(sourceConfigIdx).toBeLessThan(idIdx);
  });

  it('declares getCoverage before getTender so GET /:id cannot shadow it (Pitfall 5)', () => {
    const methods = Object.getOwnPropertyNames(TendersController.prototype);
    const coverageIdx = methods.indexOf('getCoverage');
    const idIdx = methods.indexOf('getTender');

    expect(coverageIdx).toBeGreaterThanOrEqual(0);
    expect(idIdx).toBeGreaterThanOrEqual(0);
    expect(coverageIdx).toBeLessThan(idIdx);
  });
});

describe('TendersController — listTenders uses the query builder (sort whitelist + pagination bounds)', () => {
  it('passes buildTenderWhere/buildOrderBy output through to prisma.tender.findMany', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.listTenders({ sort: 'deadline', q: 'Bau' } as any);

    const callArgs = prisma.tender.findMany.mock.calls[0][0];
    expect(callArgs.orderBy).toEqual({ deadlineAt: 'asc' });
    expect(callArgs.where.AND).toEqual(
      expect.arrayContaining([
        {
          OR: [
            { title: { contains: 'Bau', mode: 'insensitive' } },
            { buyerName: { contains: 'Bau', mode: 'insensitive' } },
          ],
        },
      ]),
    );
  });

  it('an unknown sort key falls back to the publishedAt-desc default via buildOrderBy', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.listTenders({ sort: 'not-whitelisted' } as any);

    const callArgs = prisma.tender.findMany.mock.calls[0][0];
    expect(callArgs.orderBy).toEqual({ publishedAt: 'desc' });
  });

  it('respects page/limit for skip/take (pagination bounds unchanged, T-10-15)', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    await controller.listTenders({ page: 3, limit: 10 } as any);

    const callArgs = prisma.tender.findMany.mock.calls[0][0];
    expect(callArgs.skip).toBe(20);
    expect(callArgs.take).toBe(10);
  });
});

describe('TendersController — GET /coverage', () => {
  it('returns distinct sourcePortal distribution and total for active tenders', async () => {
    const prisma = makeFakePrisma();
    const scheduler = { setInterval: vi.fn(), stopJob: vi.fn() } as any;
    const controller = new TendersController(prisma as any, scheduler);

    const result = await controller.getCoverage();

    expect(prisma.tender.groupBy).toHaveBeenCalledWith(
      expect.objectContaining({
        by: ['sourcePortal'],
        where: { status: 'active' },
      }),
    );
    expect(result).toEqual({
      total: 1,
      sources: [{ sourcePortal: 'doe-opendata', count: 1 }],
    });
  });
});