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

const SYSTEM_ID = 'hive-system-zander-liebig-10';
const FLOOR = 'hive-part-zl10-floor';
const BOX = 'hive-part-zl10-box-10';
const ROOF = 'hive-part-zl10-roof';

const frames = Array.from({ length: 10 }, (_, i) => ({
  slot: i + 1,
  type: 'FOUNDATION',
}));
const state = {
  schemaVersion: 1,
  stack: [
    { id: 'e2e-floor', partTypeId: FLOOR, state: {} },
    { id: 'e2e-box', partTypeId: BOX, state: {}, frames },
    { id: 'e2e-roof', partTypeId: ROOF, state: {} },
  ],
};

interface ViewBody {
  version: number;
  state: { schemaVersion: number; stack: { label?: string }[] };
  facts: { boxCount: number };
}
interface HistoryBody {
  items: { version: number; userName: string; stateAfter?: unknown }[];
  nextCursor: string | null;
}
interface ConflictBody {
  current: { version: number; state: { schemaVersion: number } };
}
const versionsOf = (body: HistoryBody) => body.items.map((i) => i.version);

/** Hive setup API against the real database: locks, unique keys, outbox. */
describe('Hive setup (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const password = 'SuperSecret123!';
  const today = berlinToday();
  const initDay = addDays(today, -5);
  let apiaryId: string;
  let colonyId: string;
  const roleIds: string[] = [];
  const userIds: string[] = [];
  const tokens = { writer: '', reader: '' };
  let counter = 0;
  const key = () => `hive-e2e-${suffix}-${(counter += 1)}-key`;
  const api = () => request(app.getHttpServer());
  const auth = (token: string) => ({ Authorization: `Bearer ${token}` });
  const url = (path = '') => `/api/v1/colonies/${colonyId}/hive${path}`;

  async function createUser(label: string, permissions: string[]) {
    const role = await prisma.role.create({
      data: {
        key: `HIVE_E2E_${label.toUpperCase()}_${suffix}`,
        name: `Hive e2e ${label}`,
        permissions: {
          create: permissions.map((p) => ({
            permission: { connect: { key: p } },
          })),
        },
      },
    });
    roleIds.push(role.id);
    const email = `hive-e2e-${label}-${suffix}@example.com`;
    const user = await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name: `Hive ${label}`,
        role: { connect: { id: role.id } },
      },
    });
    userIds.push(user.id);
    return (await login(app, email, password)).accessToken;
  }

  const change = (overrides: object = {}) =>
    api()
      .post(url('/changes'))
      .set(auth(tokens.writer))
      .set('Idempotency-Key', key())
      .send({
        occurredOn: today,
        source: 'CARD',
        ops: [{ op: 'setLabel', id: 'e2e-box', label: 'Brutraum' }],
        ...overrides,
      });

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Hive e2e ${suffix}` } })
    ).id;
    colonyId = (
      await prisma.colony.create({
        data: {
          code: `HV-${suffix}`,
          apiaryId,
          colonyType: 'PRODUCTION_COLONY',
        },
      })
    ).id;
    tokens.writer = await createUser('writer', [
      'colonies:read',
      'colonies:update',
    ]);
    tokens.reader = await createUser('reader', ['colonies:read']);
  });

  afterAll(async () => {
    await prisma.hiveChange.deleteMany({ where: { colonyId } });
    await prisma.hiveSetup.deleteMany({ where: { colonyId } });
    await prisma.domainEvent.deleteMany({ where: { aggregateId: colonyId } });
    await prisma.colony.delete({ where: { id: colonyId } });
    await prisma.apiary.delete({ where: { id: apiaryId } });
    await prisma.idempotencyRecord.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.auditLog.deleteMany({ where: { userId: { in: userIds } } });
    await prisma.user.deleteMany({ where: { id: { in: userIds } } });
    await prisma.role.deleteMany({ where: { id: { in: roleIds } } });
    await app.close();
  });

  it('answers 404 HIVE_NOT_FOUND before a setup exists', async () => {
    const res = await api().get(url()).set(auth(tokens.reader)).expect(404);
    expect(res.body).toMatchObject({ code: 'HIVE_NOT_FOUND' });
  });

  it('refuses a writer without colonies:update', async () => {
    await api()
      .post(url())
      .set(auth(tokens.reader))
      .set('Idempotency-Key', key())
      .send({ systemId: SYSTEM_ID, state, occurredOn: initDay })
      .expect(403);
  });

  it('creates the setup with version 1, an INIT change and an event', async () => {
    const res = await api()
      .post(url())
      .set(auth(tokens.writer))
      .set('Idempotency-Key', key())
      .send({ systemId: SYSTEM_ID, state, occurredOn: initDay })
      .expect(201);
    expect(res.body).toMatchObject({ colonyId, version: 1 });
    expect((res.body as ViewBody).facts.boxCount).toBe(1);

    const init = await prisma.hiveChange.findUniqueOrThrow({
      where: { colonyId_version: { colonyId, version: 1 } },
    });
    expect(init.source).toBe('INIT');
    expect(init.occurredOn.toISOString().slice(0, 10)).toBe(initDay);
    const events = await prisma.domainEvent.findMany({
      where: { aggregateId: colonyId, type: 'HiveChanged' },
    });
    expect(events).toHaveLength(1);
    expect(events[0].payload).toEqual({
      colonyId,
      version: 1,
      source: 'INIT',
      inspectionId: null,
    });
  });

  it('answers 409 HIVE_EXISTS for a second setup', async () => {
    const res = await api()
      .post(url())
      .set(auth(tokens.writer))
      .set('Idempotency-Key', key())
      .send({ systemId: SYSTEM_ID, state, occurredOn: initDay })
      .expect(409);
    expect(res.body).toMatchObject({ code: 'HIVE_EXISTS' });
  });

  it('applies a change, then a backdated one, and lists them by day', async () => {
    const first = await change().expect(201);
    const firstView = first.body as ViewBody;
    expect(firstView.version).toBe(2);
    expect(firstView.state.stack[1].label).toBe('Brutraum');

    const backdated = await change({
      occurredOn: addDays(initDay, 2),
      ops: [{ op: 'setLabel', id: 'e2e-box', label: 'Nachtrag' }],
    }).expect(201);
    expect((backdated.body as ViewBody).version).toBe(3);

    const history = await api()
      .get(url('/changes'))
      .set(auth(tokens.reader))
      .expect(200);
    const list = history.body as HistoryBody;
    expect(versionsOf(list)).toEqual([2, 3, 1]);
    expect(list.items[0].userName).toBe('Hive writer');
    expect(list.items[0].stateAfter).toBeUndefined();

    const page = await api()
      .get(url('/changes?limit=1'))
      .set(auth(tokens.reader))
      .expect(200);
    const firstPage = page.body as HistoryBody;
    expect(firstPage.items).toHaveLength(1);
    expect(firstPage.nextCursor).toMatch(/^[A-Za-z0-9_-]+$/);
    const next = await api()
      .get(
        url(
          `/changes?limit=5&cursor=${encodeURIComponent(firstPage.nextCursor ?? '')}`,
        ),
      )
      .set(auth(tokens.reader))
      .expect(200);
    expect(versionsOf(next.body as HistoryBody)).toEqual([3, 1]);
  });

  it('returns the state at a day and 404 before INIT', async () => {
    const at = await api()
      .get(url(`/at?day=${addDays(initDay, 2)}`))
      .set(auth(tokens.reader))
      .expect(200);
    expect((at.body as ViewBody).version).toBe(3);
    await api()
      .get(url(`/at?day=${addDays(initDay, -1)}`))
      .set(auth(tokens.reader))
      .expect(404);
  });

  it('answers 409 HIVE_CONFLICT with the current state', async () => {
    const res = await change({
      ops: [{ op: 'removePart', id: 'gone' }],
    }).expect(409);
    expect(res.body).toMatchObject({
      code: 'HIVE_CONFLICT',
      opIndex: 0,
      current: { version: 3 },
    });
    expect((res.body as ConflictBody).current.state.schemaVersion).toBe(1);
  });

  it('answers 400 for shape errors, AI_SUGGESTION and wrong days', async () => {
    await change({ ops: [{ op: 'explode' }] }).expect(400);
    await change({ source: 'AI_SUGGESTION' }).expect(400);
    await change({ ops: [] }).expect(400);
    await change({ occurredOn: addDays(today, 1) }).expect(400);
    await change({ occurredOn: addDays(initDay, -1) }).expect(400);
  });

  it('replays an idempotent retry without a second change', async () => {
    const retryKey = key();
    const send = () =>
      api()
        .post(url('/changes'))
        .set(auth(tokens.writer))
        .set('Idempotency-Key', retryKey)
        .send({
          occurredOn: today,
          source: 'EDITOR',
          ops: [{ op: 'setLabel', id: 'e2e-box', label: 'Retry' }],
        });
    const first = await send().expect(201);
    const second = await send().expect(201);
    const firstVersion = (first.body as ViewBody).version;
    expect((second.body as ViewBody).version).toBe(firstVersion);
    expect(await prisma.hiveChange.count({ where: { colonyId } })).toBe(
      firstVersion,
    );
  });

  it('makes a colony that no longer lives read-only', async () => {
    await prisma.colony.update({
      where: { id: colonyId },
      data: { status: 'SOLD' },
    });
    await change().expect(409);
    await prisma.colony.update({
      where: { id: colonyId },
      data: { status: 'ACTIVE' },
    });
  });
});

/** An inspection carries hive operations that are saved with it atomically. */
describe('Inspection with hiveChange (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const password = 'SuperSecret123!';
  const today = berlinToday();
  let apiaryId: string;
  let colonyId: string;
  let bareColonyId: string;
  const roleIds: string[] = [];
  const userIds: string[] = [];
  const tokens = { full: '', inspectorOnly: '' };
  let counter = 0;
  const key = () => `hive-insp-${suffix}-${(counter += 1)}-key`;
  const api = () => request(app.getHttpServer());
  const auth = (token: string) => ({ Authorization: `Bearer ${token}` });

  async function createUser(label: string, permissions: string[]) {
    const role = await prisma.role.create({
      data: {
        key: `HIVE_INSP_${label.toUpperCase()}_${suffix}`,
        name: `Hive inspection ${label}`,
        permissions: {
          create: permissions.map((p) => ({
            permission: { connect: { key: p } },
          })),
        },
      },
    });
    roleIds.push(role.id);
    const email = `hive-insp-${label}-${suffix}@example.com`;
    const user = await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name: `Hive inspection ${label}`,
        role: { connect: { id: role.id } },
      },
    });
    userIds.push(user.id);
    return (await login(app, email, password)).accessToken;
  }

  const inspect = (token: string, body: object, targetColony = colonyId) =>
    api()
      .post('/api/v1/inspections')
      .set(auth(token))
      .set('Idempotency-Key', key())
      .send({
        colonyId: targetColony,
        date: new Date().toISOString(),
        ...body,
      });

  const labelOp = (label: string, id = 'e2e-box') => ({
    op: 'setLabel',
    id,
    label,
  });
  const inspectionCount = (id = colonyId) =>
    prisma.inspection.count({ where: { colonyId: id } });

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Hive insp ${suffix}` } })
    ).id;
    const make = async (code: string) =>
      (
        await prisma.colony.create({
          data: {
            code: `${code}-${suffix}`,
            apiaryId,
            colonyType: 'PRODUCTION_COLONY',
          },
        })
      ).id;
    colonyId = await make('HI');
    bareColonyId = await make('HB');
    tokens.full = await createUser('full', [
      'colonies:read',
      'colonies:update',
      'inspections:create',
    ]);
    tokens.inspectorOnly = await createUser('inspector', [
      'colonies:read',
      'inspections:create',
    ]);
    await api()
      .post(`/api/v1/colonies/${colonyId}/hive`)
      .set(auth(tokens.full))
      .set('Idempotency-Key', key())
      .send({
        systemId: SYSTEM_ID,
        state,
        occurredOn: addDays(today, -5),
      })
      .expect(201);
  });

  afterAll(async () => {
    const colonyIds = [colonyId, bareColonyId];
    await prisma.hiveChange.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.hiveSetup.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.inspection.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.domainEvent.deleteMany({
      where: { aggregateId: { in: colonyIds } },
    });
    await prisma.colony.deleteMany({ where: { id: { in: colonyIds } } });
    await prisma.apiary.delete({ where: { id: apiaryId } });
    await prisma.idempotencyRecord.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.auditLog.deleteMany({ where: { userId: { in: userIds } } });
    await prisma.user.deleteMany({ where: { id: { in: userIds } } });
    await prisma.role.deleteMany({ where: { id: { in: roleIds } } });
    await app.close();
  });

  it('saves the inspection and its hive change together', async () => {
    const res = await inspect(tokens.full, {
      hiveChange: { ops: [labelOp('Brutraum')] },
    }).expect(201);

    const body = res.body as { id: string; hive: ViewBody };
    expect(body.hive.version).toBe(2);
    const change = await prisma.hiveChange.findUniqueOrThrow({
      where: { colonyId_version: { colonyId, version: 2 } },
    });
    expect(change).toMatchObject({
      source: 'INSPECTION',
      inspectionId: body.id,
    });
    expect(change.occurredOn.toISOString().slice(0, 10)).toBe(today);
    expect(await inspectionCount()).toBe(1);
  });

  it('leaves no inspection row when an operation conflicts', async () => {
    const before = await inspectionCount();
    const res = await inspect(tokens.full, {
      hiveChange: { ops: [labelOp('x', 'does-not-exist')] },
    }).expect(409);

    expect(res.body).toMatchObject({ code: 'HIVE_CONFLICT', opIndex: 0 });
    expect(await inspectionCount()).toBe(before);
    expect(await prisma.hiveChange.count({ where: { colonyId } })).toBe(2);
  });

  it('leaves no inspection row for a colony without a hive setup', async () => {
    const res = await inspect(
      tokens.full,
      { hiveChange: { ops: [labelOp('x')] } },
      bareColonyId,
    ).expect(404);

    expect(res.body).toMatchObject({ code: 'HIVE_NOT_FOUND' });
    expect(await inspectionCount(bareColonyId)).toBe(0);
  });

  it('answers 403 HIVE_FORBIDDEN without colonies:update and writes nothing', async () => {
    const before = await inspectionCount();
    const res = await inspect(tokens.inspectorOnly, {
      hiveChange: { ops: [labelOp('Nein')] },
    }).expect(403);

    expect(res.body).toMatchObject({ code: 'HIVE_FORBIDDEN' });
    expect(await inspectionCount()).toBe(before);
    expect(await prisma.hiveChange.count({ where: { colonyId } })).toBe(2);
  });

  it('answers 400 for a future inspection date and one before the INIT day', async () => {
    const before = await inspectionCount();
    const future = new Date(Date.now() + 3 * 86_400_000).toISOString();
    const early = new Date(Date.now() - 30 * 86_400_000).toISOString();
    for (const date of [future, early]) {
      await inspect(tokens.full, {
        date,
        hiveChange: { ops: [labelOp('Datum')] },
      }).expect(400);
    }
    expect(await inspectionCount()).toBe(before);
  });

  it('answers 400 for an empty ops list and still saves a plain inspection', async () => {
    await inspect(tokens.full, { hiveChange: { ops: [] } }).expect(400);
    const plain = await inspect(tokens.inspectorOnly, {}).expect(201);
    expect(plain.body).not.toHaveProperty('hive');
  });
});