import { INestApplication } from '@nestjs/common';
import * as bcrypt from 'bcryptjs';
import request from 'supertest';
import { App } from 'supertest/types';
import { PrismaService } from '../src/prisma/prisma.service';
import { createTestApp } from './utils/create-test-app';
import { login } from './utils/api';
import { drainDomainEvents } from './utils/domain-events';

interface RuleBody {
  id: string;
  triggerType: string;
  active: boolean;
}

/**
 * Follow-up checks after a treatment or feeding: off by default (no built-in
 * intervals), due relative to the measure itself, never duplicated.
 */
describe('Follow-up controls (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  let token: string;
  let apiaryId: string;
  const colonyIds: string[] = [];

  const server = () => app.getHttpServer();
  const auth = () => ({ Authorization: `Bearer ${token}` });

  async function rule(triggerType: string): Promise<RuleBody> {
    const response = await request(server())
      .get('/api/v1/automation-rules')
      .set(auth())
      .expect(200);
    const found = (response.body as RuleBody[]).find(
      (r) => r.triggerType === triggerType,
    );
    if (!found) throw new Error(`rule ${triggerType} missing`);
    return found;
  }

  async function newColony(code: string) {
    const colony = await prisma.colony.create({
      data: {
        code: `${code}-${suffix}`,
        apiaryId,
        colonyType: 'PRODUCTION_COLONY',
      },
    });
    colonyIds.push(colony.id);
    return colony;
  }

  // The follow-up check comes from the TreatmentRecorded handler, not from
  // the request: the helper drains the events of this treatment.
  async function treat(colonyId: string, body: Record<string, unknown> = {}) {
    const response = await request(server())
      .post('/api/v1/treatments')
      .set(auth())
      .send({
        colonyId,
        date: '2026-08-01T00:00:00.000Z',
        product: 'Testmittel',
        ...body,
      })
      .expect(201);
    await drainDomainEvents(app, [(response.body as { id: string }).id]);
  }

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    await prisma.user.create({
      data: {
        email: `followup-${suffix}@example.com`,
        passwordHash: await bcrypt.hash('SuperSecret123!', 12),
        name: 'Follow-up',
        role: { connect: { key: 'ADMIN' } },
      },
    });
    token = (
      await login(app, `followup-${suffix}@example.com`, 'SuperSecret123!')
    ).accessToken;
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Follow-up ${suffix}` } })
    ).id;
  });

  afterAll(async () => {
    // Leave the shared rules as other suites expect them: off.
    await prisma.automationRule.updateMany({
      where: {
        triggerType: { in: ['TREATMENT_FOLLOW_UP', 'FEEDING_FOLLOW_UP'] },
      },
      data: { active: false, config: {} },
    });
    // Follow-up suggestions are written without a user: remove them with
    // their audit entries (deliveries go with the event, ON DELETE CASCADE).
    const suggestionIds = (
      await prisma.suggestion.findMany({
        where: { colonyId: { in: colonyIds } },
        select: { id: true },
      })
    ).map((suggestion) => suggestion.id);
    await prisma.auditLog.deleteMany({
      where: {
        OR: [
          { entityType: 'Suggestion', entityId: { in: suggestionIds } },
          ...colonyIds.map((id) => ({
            entityType: 'AutomationRule',
            afterData: { path: ['relatedId'], equals: id },
          })),
        ],
      },
    });
    await prisma.notification.deleteMany({
      where: { relatedType: 'Suggestion', relatedId: { in: suggestionIds } },
    });
    await prisma.suggestion.deleteMany({
      where: { id: { in: suggestionIds } },
    });
    const measureIds = [
      ...(await prisma.treatment.findMany({
        where: { colonyId: { in: colonyIds } },
        select: { id: true },
      })),
      ...(await prisma.feeding.findMany({
        where: { colonyId: { in: colonyIds } },
        select: { id: true },
      })),
    ].map((measure) => measure.id);
    await prisma.domainEvent.deleteMany({
      where: { aggregateId: { in: measureIds } },
    });
    await prisma.auditLog.deleteMany({
      where: { entityId: { in: measureIds } },
    });
    await app.close();
  });

  it('ships both follow-up rules switched off, without a built-in interval', async () => {
    const treatmentRule = await rule('TREATMENT_FOLLOW_UP');
    const feedingRule = await rule('FEEDING_FOLLOW_UP');
    expect(treatmentRule.active).toBe(false);
    expect(feedingRule.active).toBe(false);

    const colony = await newColony('OFF');
    await treat(colony.id);
    // Only the follow-up rules are meant; the autopilot proposes on its own.
    expect(
      await prisma.suggestion.count({
        where: { colonyId: colony.id, source: 'RULE' },
      }),
    ).toBe(0);
  });

  it('suggests a check due the configured days after the treatment ended', async () => {
    const treatmentRule = await rule('TREATMENT_FOLLOW_UP');
    await request(server())
      .patch(`/api/v1/automation-rules/${treatmentRule.id}`)
      .set(auth())
      .send({ active: true, config: { dueInDays: 14 } })
      .expect(200);

    const colony = await newColony('TREAT');
    await treat(colony.id, {
      startDate: '2026-08-01T00:00:00.000Z',
      endDate: '2026-08-10T00:00:00.000Z',
    });

    const suggestions = await prisma.suggestion.findMany({
      where: { colonyId: colony.id, ruleKey: 'TREATMENT_FOLLOW_UP' },
    });
    expect(suggestions).toHaveLength(1);
    expect(suggestions[0]).toMatchObject({
      status: 'OPEN',
      intent: 'FOLLOW_UP',
      reasonCode: 'TREATMENT_FOLLOW_UP',
      requiredPermission: 'treatments:read',
      evidence: { colonyId: colony.id, endedOn: '2026-08-10' },
    });
    expect(suggestions[0].dueDate?.toISOString()).toBe(
      '2026-08-24T00:00:00.000Z',
    );
    // The rule proposes; no task exists before the suggestion is accepted.
    expect(await prisma.task.count({ where: { relatedId: colony.id } })).toBe(
      0,
    );

    // A second treatment while the check is still open adds nothing.
    await treat(colony.id, { date: '2026-08-12T00:00:00.000Z' });
    expect(
      await prisma.suggestion.count({
        where: { colonyId: colony.id, ruleKey: 'TREATMENT_FOLLOW_UP' },
      }),
    ).toBe(1);
  });

  it('suggests a check after a feeding, counted from the feeding date', async () => {
    const feedingRule = await rule('FEEDING_FOLLOW_UP');
    await request(server())
      .patch(`/api/v1/automation-rules/${feedingRule.id}`)
      .set(auth())
      .send({ active: true, config: { dueInDays: 7 } })
      .expect(200);

    const colony = await newColony('FEED');
    const response = await request(server())
      .post('/api/v1/feedings')
      .set(auth())
      .send({
        colonyId: colony.id,
        date: '2026-09-01T00:00:00.000Z',
        feedType: 'SUGAR_WATER',
        amount: 5,
        unit: 'l',
      })
      .expect(201);
    // Not before the FeedingRecorded handler ran.
    expect(
      await prisma.suggestion.count({ where: { colonyId: colony.id } }),
    ).toBe(0);
    await drainDomainEvents(app, [(response.body as { id: string }).id]);

    const suggestion = await prisma.suggestion.findFirstOrThrow({
      where: { colonyId: colony.id, ruleKey: 'FEEDING_FOLLOW_UP' },
    });
    expect(suggestion.dueDate?.toISOString()).toBe('2026-09-08T00:00:00.000Z');
    expect(suggestion.evidence).toMatchObject({ fedOn: '2026-09-01' });
  });
});