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 type { ProposeInput } from '../src/suggestions/suggestion.types';
import { login } from './utils/api';
import { createTestApp } from './utils/create-test-app';
import { drainDomainEvents } from './utils/domain-events';
import { proposeForTest } from './utils/suggestions';

interface ViewBody {
  id: string;
  title: string;
  reasons: string[];
  colonyCode: string | null;
  apiaryName: string | null;
  status: string;
}

const VIEW_KEYS = [
  'apiaryId',
  'apiaryName',
  'cleanup',
  'colonyCode',
  'colonyId',
  'createdAt',
  'decidedAt',
  'decisionNote',
  'dueDate',
  'expiresAt',
  'id',
  'intent',
  'mode',
  'plan',
  'priority',
  'reasons',
  'relatedId',
  'relatedType',
  'ruleKey',
  'source',
  'status',
  'title',
];
const INTERNAL_KEYS = [
  'evidence',
  'dedupeKey',
  'requiredPermission',
  'decidedByUserId',
  'reasonCode',
  'sourceEventId',
];

function expectViewShape(view: object): void {
  expect(Object.keys(view).sort()).toEqual(VIEW_KEYS);
  for (const key of INTERNAL_KEYS) {
    expect(view).not.toHaveProperty(key);
  }
}

/** The suggestion routes against a real PostgreSQL, as real roles. */
describe('Suggestions API (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const password = 'SuperSecret123!';
  const base = '/api/v1/suggestions';
  const ADMIN_PERMISSIONS = [
    'tasks:read',
    'tasks:create',
    'tasks:update',
    'inspections:read',
    'varroa:read',
    'colonies:read',
  ];
  let apiaryId: string;
  let colonyId: string;
  let inactiveUserId: string;
  const roleIds: string[] = [];
  const userIds: string[] = [];
  const tokens: Record<
    'full' | 'noVarroa' | 'readOnly' | 'noUpdate' | 'noTasks',
    string
  > = { full: '', noVarroa: '', readOnly: '', noUpdate: '', noTasks: '' };
  let keyCounter = 0;
  const nextKey = () => `suggestions-api-${suffix}-${(keyCounter += 1)}-key`;

  const proposal = (anchor: string): ProposeInput => ({
    ruleKey: 'INSPECTION_INTERVAL',
    source: 'RULE',
    mode: 'DO',
    intent: 'INSPECT',
    relatedType: 'COLONY',
    relatedId: colonyId,
    colonyId,
    reasonCode: `SUGGESTIONS_API_${suffix}`,
    evidence: { colonyId },
    requiredPermission: 'inspections:read',
    dueDate: '2026-05-12',
    anchor,
  });

  const get = (token: string, path: string) =>
    request(app.getHttpServer())
      .get(`${base}${path}`)
      .set('Authorization', `Bearer ${token}`);

  const post = (token: string, path: string, body: object = {}, key?: string) =>
    request(app.getHttpServer())
      .post(`${base}${path}`)
      .set('Authorization', `Bearer ${token}`)
      .set('Idempotency-Key', key ?? nextKey())
      .send(body);

  const tasksOf = (suggestionId: string) =>
    prisma.task.findMany({ where: { sourceSuggestionId: suggestionId } });

  async function createUser(
    label: string,
    permissions: string[],
    isActive = true,
  ): Promise<{ id: string; token: string }> {
    const role = await prisma.role.create({
      data: {
        key: `SUGGESTIONS_API_${label.toUpperCase()}_${suffix}`,
        name: `Suggestions API ${label}`,
        permissions: {
          create: permissions.map((key) => ({
            permission: { connect: { key } },
          })),
        },
      },
    });
    roleIds.push(role.id);
    const email = `suggestions-api-${label}-${suffix}@example.com`;
    const user = await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name: `Suggestions API ${label}`,
        isActive,
        role: { connect: { id: role.id } },
      },
    });
    userIds.push(user.id);
    return {
      id: user.id,
      token: isActive ? (await login(app, email, password)).accessToken : '',
    };
  }

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Sug API ${suffix}` } })
    ).id;
    colonyId = (
      await prisma.colony.create({
        data: {
          code: `SA-${suffix}`,
          apiaryId,
          colonyType: 'PRODUCTION_COLONY',
        },
      })
    ).id;
    tokens.full = (await createUser('full', ADMIN_PERMISSIONS)).token;
    tokens.noVarroa = (
      await createUser(
        'novarroa',
        ADMIN_PERMISSIONS.filter((key) => key !== 'varroa:read'),
      )
    ).token;
    tokens.readOnly = (await createUser('readonly', ['tasks:read'])).token;
    tokens.noUpdate = (
      await createUser('noupdate', ['tasks:read', 'tasks:create'])
    ).token;
    tokens.noTasks = (await createUser('notasks', ['colonies:read'])).token;
    inactiveUserId = (await createUser('inactive', ['tasks:read'], false)).id;
  });

  const cleanDb = async () => {
    const ids = (
      await prisma.suggestion.findMany({
        where: { colonyId },
        select: { id: true },
      })
    ).map((row) => row.id);
    const taskIds = (
      await prisma.task.findMany({
        where: { sourceSuggestionId: { in: ids } },
        select: { id: true },
      })
    ).map((row) => row.id);
    await prisma.domainEvent.deleteMany({
      where: { aggregateId: { in: taskIds } },
    });
    await prisma.calendarSyncOutboxEntry.deleteMany({
      where: { sourceType: 'TASK', sourceId: { in: taskIds } },
    });
    await prisma.task.deleteMany({ where: { id: { in: taskIds } } });
    await prisma.suggestion.deleteMany({ where: { colonyId } });
  };

  afterEach(cleanDb);

  afterAll(async () => {
    await cleanDb();
    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('lists open suggestions with rendered title and reasons', async () => {
    const created = await proposeForTest(app, proposal('a1'));

    const response = await get(tokens.full, `?colonyId=${colonyId}`).expect(
      200,
    );

    const [view] = response.body as ViewBody[];
    expect(view).toMatchObject({
      id: created.id,
      title: 'Durchsicht fällig',
      reasons: [],
      colonyCode: `SA-${suffix}`,
      apiaryName: `Sug API ${suffix}`,
      status: 'OPEN',
      dueDate: '2026-05-12',
    });
    const byApiary = await get(tokens.full, `?apiaryId=${apiaryId}`).expect(
      200,
    );
    expect(byApiary.body).toHaveLength(1);
    const other = await get(tokens.full, '?apiaryId=none').expect(200);
    expect(other.body).toEqual([]);
  });

  it('a user without varroa:read sees neither the varroa suggestion nor its count', async () => {
    await proposeForTest(app, {
      ...proposal('v1'),
      ruleKey: 'VARROA_THRESHOLD',
      intent: 'VARROA_TREAT',
      requiredPermission: 'varroa:read',
    });

    const hidden = await get(tokens.noVarroa, `?colonyId=${colonyId}`);
    const hiddenSummary = await get(tokens.noVarroa, '/summary');
    const seen = await get(tokens.full, `?colonyId=${colonyId}`);
    const seenSummary = await get(tokens.full, '/summary');

    expect(hidden.body).toEqual([]);
    expect((hiddenSummary.body as { open: number }).open).toBe(0);
    expect(seen.body).toHaveLength(1);
    expect((seenSummary.body as { open: number }).open).toBeGreaterThanOrEqual(
      1,
    );
    expect(
      (seenSummary.body as { byPriority: Record<string, number> }).byPriority,
    ).toEqual(
      expect.objectContaining({ LOW: 0, NORMAL: expect.any(Number) as number }),
    );
  });

  it('answers 404 to a decision on a suggestion the user may not see', async () => {
    const created = await proposeForTest(app, {
      ...proposal('v2'),
      ruleKey: 'VARROA_THRESHOLD',
      intent: 'VARROA_TREAT',
      requiredPermission: 'varroa:read',
    });

    await post(tokens.noVarroa, `/${created.id}/accept`).expect(404);
    await post(tokens.noVarroa, `/${created.id}/dismiss`).expect(404);
    await post(tokens.noVarroa, '/bulk-accept', { ids: [created.id] }).expect(
      404,
    );
    await post(tokens.noVarroa, '/bulk-dismiss', { ids: [created.id] }).expect(
      404,
    );
    await post(tokens.full, `/${created.id}/dismiss`).expect(201);
    await post(tokens.noVarroa, `/${created.id}/reopen`).expect(404);
    expect(await tasksOf(created.id)).toHaveLength(0);
  });

  it('accept creates exactly one task with sourceSuggestionId and a calendar delivery', async () => {
    const created = await proposeForTest(app, proposal('c1'));

    const response = await post(tokens.full, `/${created.id}/accept`).expect(
      201,
    );

    const tasks = await tasksOf(created.id);
    expect(tasks).toHaveLength(1);
    expect(tasks[0]).toMatchObject({
      sourceSuggestionId: created.id,
      title: 'Durchsicht fällig',
    });
    const body = response.body as {
      suggestion: object & { status: string };
      tasks: { id: string }[];
    };
    expect(Object.keys(body).sort()).toEqual(['suggestion', 'tasks']);
    expectViewShape(body.suggestion);
    expect(body.suggestion.status).toBe('ACCEPTED');
    expect(body.tasks.map((task) => task.id)).toEqual([tasks[0].id]);
    expect(body.tasks[0]).toMatchObject({
      sourceSuggestionId: created.id,
      title: 'Durchsicht fällig',
    });
    await drainDomainEvents(app, [tasks[0].id]);
    const events = await prisma.domainEvent.findMany({
      where: { aggregateType: 'Task', aggregateId: tasks[0].id },
      include: { deliveries: true },
    });
    expect(events).toHaveLength(1);
    expect(events[0].deliveries).toEqual(
      expect.arrayContaining([
        expect.objectContaining({
          handler: 'calendar-sync.task',
          status: 'DONE',
        }),
      ]),
    );
  });

  it('a second accept with another key answers 409 and leaves exactly one task', async () => {
    const created = await proposeForTest(app, proposal('c2'));
    await post(tokens.full, `/${created.id}/accept`).expect(201);

    const second = await post(tokens.full, `/${created.id}/accept`).expect(409);

    expect(second.body).toMatchObject({
      message: 'Der Vorschlag ist nicht mehr offen.',
      status: 'ACCEPTED',
    });
    expect(await tasksOf(created.id)).toHaveLength(1);
  });

  it('the same Idempotency-Key replays the first accept', async () => {
    const created = await proposeForTest(app, proposal('c3'));
    const key = nextKey();

    const first = await post(
      tokens.full,
      `/${created.id}/accept`,
      {},
      key,
    ).expect(201);
    const replay = await post(
      tokens.full,
      `/${created.id}/accept`,
      {},
      key,
    ).expect(201);

    expect(replay.body).toEqual(first.body);
    expect(await tasksOf(created.id)).toHaveLength(1);
  });

  it('bulk-accept with one non-OPEN id answers 409 and creates no task', async () => {
    const open = await proposeForTest(app, proposal('b1'));
    const dismissed = await proposeForTest(app, {
      ...proposal('b2'),
      ruleKey: 'QUEEN_ACCEPTANCE_CHECK',
      intent: 'QUEEN_ACCEPTANCE',
    });
    await post(tokens.full, `/${dismissed.id}/dismiss`).expect(201);

    await post(tokens.full, '/bulk-accept', {
      ids: [open.id, dismissed.id],
    }).expect(409);

    expect(await tasksOf(open.id)).toHaveLength(0);
    expect(
      (await prisma.suggestion.findUniqueOrThrow({ where: { id: open.id } }))
        .status,
    ).toBe('OPEN');
  });

  it('bulk endpoints reject 0 or 51 ids', async () => {
    const ids51 = Array.from({ length: 51 }, (_, index) => `id-${index}`);

    for (const path of ['/bulk-accept', '/bulk-dismiss']) {
      await post(tokens.full, path, { ids: [] }).expect(400);
      await post(tokens.full, path, { ids: ids51 }).expect(400);
    }
  });

  it('bulk-dismiss dismisses all given suggestions', async () => {
    const first = await proposeForTest(app, proposal('d1'));
    const second = await proposeForTest(app, {
      ...proposal('d2'),
      ruleKey: 'QUEEN_ACCEPTANCE_CHECK',
      intent: 'QUEEN_ACCEPTANCE',
    });

    const response = await post(tokens.full, '/bulk-dismiss', {
      ids: [first.id, second.id],
    }).expect(201);

    expect(response.body).toEqual({ dismissed: 2 });
  });

  it('accept with an unknown or inactive assignedUserId answers 400 and creates no task', async () => {
    const created = await proposeForTest(app, proposal('u1'));

    await post(tokens.full, `/${created.id}/accept`, {
      assignedUserId: 'does-not-exist',
    }).expect(400);
    const inactive = await post(tokens.full, `/${created.id}/accept`, {
      assignedUserId: inactiveUserId,
    }).expect(400);

    expect(inactive.body).toMatchObject({
      issues: [{ field: 'assignedUserId' }],
    });
    expect(await tasksOf(created.id)).toHaveLength(0);
  });

  it('dismiss then reopen restores OPEN; the dismissed one is listed for 30 days', async () => {
    const created = await proposeForTest(app, proposal('r1'));

    const dismissResponse = await post(tokens.full, `/${created.id}/dismiss`, {
      note: 'später',
    }).expect(201);
    expectViewShape(dismissResponse.body as object);
    expect(dismissResponse.body).toMatchObject({
      status: 'DISMISSED',
      decisionNote: 'später',
    });
    const dismissed = await get(
      tokens.full,
      `?status=DISMISSED&colonyId=${colonyId}`,
    ).expect(200);
    expect(await get(tokens.full, `?colonyId=${colonyId}`)).toMatchObject({
      body: [],
    });
    await prisma.$executeRaw`UPDATE "Suggestion" SET "decidedAt" = now() - interval '31 days' WHERE id = ${created.id}`;
    const stale = await get(
      tokens.full,
      `?status=DISMISSED&colonyId=${colonyId}`,
    ).expect(200);
    await prisma.$executeRaw`UPDATE "Suggestion" SET "decidedAt" = now() WHERE id = ${created.id}`;
    const reopened = await post(tokens.full, `/${created.id}/reopen`).expect(
      201,
    );

    expect(dismissed.body).toHaveLength(1);
    expect((dismissed.body as { decisionNote: string }[])[0]).toMatchObject({
      decisionNote: 'später',
    });
    expect(stale.body).toEqual([]);
    expectViewShape(reopened.body as object);
    expect(reopened.body).toMatchObject({ status: 'OPEN' });
    expect(await get(tokens.full, `?colonyId=${colonyId}`)).toMatchObject({
      body: [expect.objectContaining({ id: created.id })],
    });
  });

  it('rejects a dismiss note over 500 characters', async () => {
    const created = await proposeForTest(app, proposal('n1'));

    await post(tokens.full, `/${created.id}/dismiss`, {
      note: 'x'.repeat(501),
    }).expect(400);
  });

  it('403 without tasks:create on accept and without tasks:update on dismiss', async () => {
    const created = await proposeForTest(app, proposal('p1'));

    await post(tokens.readOnly, `/${created.id}/accept`).expect(403);
    await post(tokens.readOnly, '/bulk-accept', { ids: [created.id] }).expect(
      403,
    );
    await post(tokens.noUpdate, `/${created.id}/dismiss`).expect(403);
    await post(tokens.noUpdate, `/${created.id}/reopen`).expect(403);
    await post(tokens.noUpdate, '/bulk-dismiss', { ids: [created.id] }).expect(
      403,
    );
    await request(app.getHttpServer()).get(base).expect(401);
  });

  it('bulk-accept answers one result per suggestion in the view shape', async () => {
    const first = await proposeForTest(app, proposal('ba1'));
    const second = await proposeForTest(app, {
      ...proposal('ba2'),
      ruleKey: 'QUEEN_ACCEPTANCE_CHECK',
      intent: 'QUEEN_ACCEPTANCE',
    });

    const response = await post(tokens.full, '/bulk-accept', {
      ids: [first.id, second.id],
    }).expect(201);

    const results = response.body as {
      suggestion: { id: string };
      tasks: object[];
    }[];
    expect(results.map((result) => result.suggestion.id)).toEqual([
      first.id,
      second.id,
    ]);
    for (const result of results) {
      expectViewShape(result.suggestion);
      expect(result.tasks).toHaveLength(1);
    }
  });

  it('403 on the list and the summary without tasks:read', async () => {
    await get(tokens.noTasks, '').expect(403);
    await get(tokens.noTasks, '/summary').expect(403);
  });

  it('rejects an invalid status, a datetime dueDate and a bad limit with 400', async () => {
    const created = await proposeForTest(app, proposal('v400'));

    await get(tokens.full, '?status=NOPE').expect(400);
    await get(tokens.full, '?limit=501').expect(400);
    await get(tokens.full, '?limit=0').expect(400);
    await get(tokens.full, '?offset=-1').expect(400);
    const response = await post(tokens.full, `/${created.id}/accept`, {
      dueDate: '2026-05-12T10:00:00Z',
    }).expect(400);

    expect(JSON.stringify(response.body)).toContain('JJJJ-MM-TT');
    expect(await tasksOf(created.id)).toHaveLength(0);
  });

  it('limit and offset page through the list', async () => {
    await proposeForTest(app, proposal('l1'));
    await proposeForTest(app, {
      ...proposal('l2'),
      ruleKey: 'QUEEN_ACCEPTANCE_CHECK',
      intent: 'QUEEN_ACCEPTANCE',
    });
    const all = (await get(tokens.full, `?colonyId=${colonyId}`).expect(200))
      .body as ViewBody[];

    const first = (
      await get(tokens.full, `?colonyId=${colonyId}&limit=1`).expect(200)
    ).body as ViewBody[];
    const second = (
      await get(tokens.full, `?colonyId=${colonyId}&limit=1&offset=1`).expect(
        200,
      )
    ).body as ViewBody[];

    expect(all).toHaveLength(2);
    expect(first.map((view) => view.id)).toEqual([all[0].id]);
    expect(second.map((view) => view.id)).toEqual([all[1].id]);
  });

  it('combines the apiaryId filter with status and colonyId', async () => {
    const created = await proposeForTest(app, proposal('f1'));
    await post(tokens.full, `/${created.id}/dismiss`).expect(201);

    const hit = await get(
      tokens.full,
      `?apiaryId=${apiaryId}&colonyId=${colonyId}&status=DISMISSED`,
    ).expect(200);
    const wrongStatus = await get(
      tokens.full,
      `?apiaryId=${apiaryId}&colonyId=${colonyId}&status=OPEN`,
    ).expect(200);
    const wrongApiary = await get(
      tokens.full,
      `?apiaryId=none&colonyId=${colonyId}&status=DISMISSED`,
    ).expect(200);

    expect((hit.body as ViewBody[]).map((view) => view.id)).toEqual([
      created.id,
    ]);
    expect(wrongStatus.body).toEqual([]);
    expect(wrongApiary.body).toEqual([]);
  });

  it('sorts by due date (none last), then priority (highest first)', async () => {
    const mk = (
      anchor: string,
      intent: ProposeInput['intent'],
      priority: ProposeInput['priority'],
      dueDate: string | null,
    ) =>
      proposeForTest(app, { ...proposal(anchor), intent, priority, dueDate });
    const undated = await mk('s1', 'QUEEN_CHECK', 'URGENT', null);
    const normal = await mk('s2', 'INSPECT', 'NORMAL', '2026-05-12');
    const urgent = await mk('s3', 'SWARM_CHECK', 'URGENT', '2026-05-12');
    const early = await mk('s4', 'HEALTH_CHECK', 'LOW', '2026-05-10');

    const response = await get(tokens.full, `?colonyId=${colonyId}`).expect(
      200,
    );

    expect((response.body as ViewBody[]).map((view) => view.id)).toEqual([
      early.id,
      urgent.id,
      normal.id,
      undated.id,
    ]);
  });

  it('shows the cleanup payload from the openTaskIds evidence', async () => {
    await proposeForTest(app, {
      ...proposal('cl1'),
      ruleKey: 'COLONY_ENDED_CLEANUP',
      intent: 'CLEANUP',
      requiredPermission: 'colonies:read',
      evidence: {
        colonyId,
        status: 'DECEASED',
        endedOn: '2026-03-12',
        via: 'winter',
        openTaskIds: ['t_a', 't_b'],
        queenId: 'q_1',
      },
    });
    await proposeForTest(app, { ...proposal('cl2'), intent: 'QUEEN_CHECK' });

    const views = (await get(tokens.full, `?colonyId=${colonyId}`).expect(200))
      .body as { intent: string; cleanup: unknown }[];

    expect(views.find((v) => v.intent === 'CLEANUP')?.cleanup).toEqual({
      taskIds: ['t_a', 't_b'],
      queenId: 'q_1',
    });
    expect(views.find((v) => v.intent === 'QUEEN_CHECK')?.cleanup).toBeNull();
  });

  it('bulk-dismiss answers { dismissed } only', async () => {
    const created = await proposeForTest(app, proposal('bd1'));

    const response = await post(tokens.full, '/bulk-dismiss', {
      ids: [created.id],
    }).expect(201);

    expect(response.body).toEqual({ dismissed: 1 });
  });
});