/**
 * Integration tests for the settings surface, against the live seeded database.
 *
 *   pnpm services:up && pnpm db:migrate && pnpm db:seed
 *
 * These are mostly authorization and information-leak tests. Settings hands a
 * user controls over their own account; the failure mode that matters is one of
 * them reaching somebody else's.
 */
import { config } from 'dotenv';
import { sql } from 'drizzle-orm';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';

config({ path: '../../.env' });

const { closePool, db } = await import('@linkder/db');
const { appRouter } = await import('../src/root');
const { createInnerContext } = await import('../src/context');
const { createCallerFactory } = await import('../src/trpc');

const createCaller = createCallerFactory(appRouter);
type Session = import('../src/context').Session;

function callerFor(session: Session | null) {
  return createCaller(createInnerContext({ db, session }));
}

const clientSession = (userId: string): Session => ({
  userId,
  role: 'client',
  name: 'Test Client',
  email: 'client@test',
  phone: null,
  verificationStatus: null,
});

const proSession = (userId: string): Session => ({
  userId,
  role: 'pro',
  name: 'Test Pro',
  email: 'pro@test',
  phone: null,
  verificationStatus: 'verified',
});

let alice: string;
let bob: string;
let aliceEmail: string;
let bobEmail: string;

/**
 * A throwaway verified pro, owned by this file.
 *
 * Not a seeded one: vitest runs test FILES in parallel, and the location tests
 * demote a verified pro to `pending` — doing that to a seeded pro would delete a
 * card out from under deck.router.test.ts mid-run. This one is parked in the
 * Gulf of Guinea with no trades, so no deck query can reach it either way.
 */
let pro: string;
const PRO_BASE = { lat: 0.5, lng: 0.5 };

// Unique per run: these tests write real addresses onto real rows, and a
// leftover from a previous run would collide with users.email's UNIQUE index.
const RUN = Math.random().toString(36).slice(2, 8);

/** Marks the session rows this file creates, so they can be cleaned up. */
const PROBE_UA = 'SettingsTestProbe';

beforeAll(async () => {
  /*
   * The SEEDED clients specifically, not "the first two clients".
   *
   * Test files share one database and several of them insert their own client
   * probes; a bare `role = 'client' ORDER BY id LIMIT 2` picks whichever uuids
   * happen to sort first, so another file's fixture could land here and then be
   * deleted underneath these tests. Seeded accounts are the ones on
   * @linkder.test, and they are stable.
   *
   * Order by id, not created_at: the seed writes clients in one batch and
   * created_at ties, so created_at ordering is not stable between runs.
   */
  const rows = await db.execute<{ id: string; email: string }>(
    sql`SELECT id, email FROM users
         WHERE role = 'client' AND email LIKE '%@linkder.test'
         ORDER BY id LIMIT 2`,
  );
  alice = rows[0]!.id;
  bob = rows[1]!.id;
  aliceEmail = rows[0]!.email;
  bobEmail = rows[1]!.email;

  await db.execute(sql`DELETE FROM email_change_requests`);
  await db.execute(sql`DELETE FROM deletion_requests`);
  await db.execute(sql`DELETE FROM notification_preferences`);
  await db.execute(sql`DELETE FROM sessions WHERE user_agent = ${PROBE_UA}`);

  const created = await db.execute<{ id: string }>(sql`
    INSERT INTO users (name, email, role)
    VALUES ('Location Probe', ${`location-probe-${RUN}@example.com`}, 'pro')
    RETURNING id
  `);
  pro = created[0]!.id;
  await db.execute(sql`
    INSERT INTO pro_profiles (
      user_id, headline, bio, hourly_rate_cents, base_location, service_radius_m,
      verification_status, verified_at
    )
    VALUES (
      ${pro}, 'Location probe', 'Exists only for the settings location tests.', 3000,
      ST_SetSRID(ST_MakePoint(${PRO_BASE.lng}, ${PRO_BASE.lat}), 4326)::geography, 15000,
      'verified', now()
    )
  `);
});

afterAll(async () => {
  // Put the addresses back, or the next run starts from a different state.
  await db.execute(sql`UPDATE users SET email = ${aliceEmail} WHERE id = ${alice}`);
  await db.execute(sql`UPDATE users SET email = ${bobEmail} WHERE id = ${bob}`);
  await db.execute(sql`DELETE FROM email_change_requests`);
  await db.execute(sql`DELETE FROM deletion_requests`);
  await db.execute(sql`DELETE FROM notification_preferences`);
  await db.execute(sql`DELETE FROM sessions WHERE user_agent = ${PROBE_UA}`);
  // Cascades to pro_profiles and audit_log.
  await db.execute(sql`DELETE FROM users WHERE id = ${pro}`);
  await db.execute(sql`
    UPDATE users SET location = NULL, location_text = NULL, search_radius_m = 15000
    WHERE id IN (${alice}, ${bob})
  `);
  await closePool();
});

describe('notification preferences', () => {
  it('returns defaults when the user has never saved any', async () => {
    const prefs = await callerFor(clientSession(alice)).notification.get();
    expect(prefs.smsNewRequest).toBe(true);
    // Marketing is the one that must default OFF — opt-in, not opt-out.
    expect(prefs.smsMarketing).toBe(false);
    expect(prefs.emailMarketing).toBe(false);
  });

  it('a partial update does not reset the preferences it did not mention', async () => {
    const caller = callerFor(clientSession(alice));
    await caller.notification.update({ smsMarketing: true });
    await caller.notification.update({ smsNewRequest: false });

    const prefs = await caller.notification.get();
    expect(prefs.smsMarketing).toBe(true);
    expect(prefs.smsNewRequest).toBe(false);
  });

  it("one user's preferences are invisible to another", async () => {
    await callerFor(clientSession(alice)).notification.update({ pushMessages: false });
    const bobPrefs = await callerFor(clientSession(bob)).notification.get();
    expect(bobPrefs.pushMessages).toBe(true);
  });

  it('rejects an anonymous caller', async () => {
    await expect(callerFor(null).notification.get()).rejects.toThrow();
  });
});

describe('email change', () => {
  it('does NOT write the address to users.email before it is confirmed', async () => {
    const caller = callerFor(clientSession(alice));
    await caller.user.requestEmailChange({ email: `claimed-${RUN}@example.com` });

    const rows = await db.execute<{ count: number }>(
      sql`SELECT count(*)::int AS count FROM users WHERE email = ${`claimed-${RUN}@example.com`}`,
    );
    // This is the whole point: an unproven address must not occupy the UNIQUE
    // column, or its real owner can never sign up with Google.
    expect(rows[0]!.count).toBe(0);
  });

  it('does not reveal whether an address is already registered', async () => {
    // Requesting someone else's address must look exactly like any other request.
    await expect(
      callerFor(clientSession(alice)).user.requestEmailChange({ email: bobEmail }),
    ).resolves.toMatchObject({ sent: true });
  });

  it('commits the address once the token comes back', async () => {
    const caller = callerFor(clientSession(alice));
    const { token } = await caller.user.requestEmailChange({ email: `proven-${RUN}@example.com` });

    await callerFor(null).user.confirmEmailChange({ token });

    const rows = await db.execute<{ email: string; verified: boolean }>(
      sql`SELECT email, email_verified AS verified FROM users WHERE id = ${alice}`,
    );
    expect(rows[0]!.email).toBe(`proven-${RUN}@example.com`);
    expect(rows[0]!.verified).toBe(true);
  });

  it('refuses a token twice', async () => {
    const caller = callerFor(clientSession(alice));
    const { token } = await caller.user.requestEmailChange({ email: `once-${RUN}@example.com` });
    await callerFor(null).user.confirmEmailChange({ token });
    await expect(callerFor(null).user.confirmEmailChange({ token })).rejects.toThrow();
  });

  it('refuses to commit an address another account already holds', async () => {
    const { token } = await callerFor(clientSession(alice)).user.requestEmailChange({
      email: bobEmail,
    });
    // Only now — ownership proven — is the collision reported.
    await expect(callerFor(null).user.confirmEmailChange({ token })).rejects.toThrow(/already/i);
  });
});

describe('sessions', () => {
  it('never returns another user’s sessions', async () => {
    await db.execute(sql`
      INSERT INTO sessions (user_id, token, expires_at, ip_address, user_agent)
      VALUES (${bob}, ${`bob-token-${RUN}`}, now() + interval '1 day', '10.0.0.1', ${PROBE_UA})
    `);
    const aliceSessions = await callerFor(clientSession(alice)).user.sessions();
    expect(aliceSessions.every((s) => s.userAgent !== PROBE_UA)).toBe(true);
  });

  it('never returns the session token', async () => {
    const rows = await callerFor(clientSession(bob)).user.sessions();
    for (const row of rows) {
      expect(Object.keys(row)).not.toContain('token');
    }
  });
});

describe('deletion request', () => {
  it('records a request without deleting the user', async () => {
    const result = await callerFor(clientSession(bob)).user.requestDeletion({ reason: 'testing' });
    expect(result.requested).toBe(true);

    const still = await db.execute<{ count: number }>(
      sql`SELECT count(*)::int AS count FROM users WHERE id = ${bob}`,
    );
    expect(still[0]!.count).toBe(1);
  });

  it('is idempotent while one is still outstanding', async () => {
    const second = await callerFor(clientSession(bob)).user.requestDeletion({});
    expect(second.alreadyPending).toBe(true);
  });
});

describe('location and range', () => {
  it('starts with no pin and the default radius', async () => {
    const location = await callerFor(clientSession(bob)).user.location();
    expect(location.scope).toBe('client');
    expect(location.location).toBeNull();
    expect(location.radiusM).toBe(15_000);
  });

  it('saves a pin, a label and a radius, and reads them back', async () => {
    const caller = callerFor(clientSession(alice));
    // `device` rather than `place`: a GPS fix is the one source whose
    // coordinates the server takes at face value, so this test does not need a
    // geocoder to be configured.
    await caller.user.updateLocation({
      place: { source: 'device', lat: 41.4036, lng: 2.1744, label: 'Gracia, Barcelona' },
      radiusM: 8_000,
    });

    const location = await caller.user.location();
    expect(location.addressText).toBe('Gracia, Barcelona');
    expect(location.radiusM).toBe(8_000);
    expect(location.location?.lat).toBeCloseTo(41.4036, 4);
    expect(location.location?.lng).toBeCloseTo(2.1744, 4);
  });

  it('changes only what it was given', async () => {
    const caller = callerFor(clientSession(alice));
    await caller.user.updateLocation({ radiusM: 25_000 });

    const location = await caller.user.location();
    expect(location.radiusM).toBe(25_000);
    // The pin saved by the previous test is still there.
    expect(location.location?.lat).toBeCloseTo(41.4036, 4);
  });

  it('refuses a radius outside the supported range', async () => {
    const caller = callerFor(clientSession(alice));
    await expect(caller.user.updateLocation({ radiusM: 500_000 })).rejects.toThrow();
    await expect(caller.user.updateLocation({ radiusM: 10 })).rejects.toThrow();
  });

  it('refuses an update that says nothing', async () => {
    await expect(callerFor(clientSession(alice)).user.updateLocation({})).rejects.toThrow();
  });

  it('never reads or writes another user location', async () => {
    await callerFor(clientSession(alice)).user.updateLocation({ radiusM: 3_000 });
    const bobLocation = await callerFor(clientSession(bob)).user.location();
    expect(bobLocation.radiusM).not.toBe(3_000);
  });

  it('rejects an anonymous caller', async () => {
    await expect(callerFor(null).user.location()).rejects.toThrow();
    await expect(callerFor(null).user.updateLocation({ radiusM: 5_000 })).rejects.toThrow();
  });

  it('reads a pro service area from the profile, not the user row', async () => {
    // A stray value on the user row must not be what a pro is shown: the deck
    // matches on the profile, so anything else would display a number that
    // decides nothing.
    await db.execute(sql`UPDATE users SET search_radius_m = 1000 WHERE id = ${pro}`);

    const location = await callerFor(proSession(pro)).user.location();
    expect(location.scope).toBe('pro');
    expect(location.needsProfile).toBe(false);
    expect(location.radiusM).toBe(15_000);
    expect(location.location?.lat).toBeCloseTo(PRO_BASE.lat, 4);
    expect(location.reviewOnChange).toBe(true);
  });

  it('writes a pro radius to the profile the deck reads', async () => {
    await callerFor(proSession(pro)).user.updateLocation({ radiusM: 22_000 });

    const rows = await db.execute<{ radius: number }>(
      sql`SELECT service_radius_m AS radius FROM pro_profiles WHERE user_id = ${pro}`,
    );
    expect(rows[0]!.radius).toBe(22_000);
  });

  it('sends a verified pro back for review when the area changes', async () => {
    await db.execute(
      sql`UPDATE pro_profiles SET verification_status = 'verified' WHERE user_id = ${pro}`,
    );

    const result = await callerFor(proSession(pro)).user.updateLocation({ radiusM: 30_000 });
    expect(result.sentForReview).toBe(true);

    const rows = await db.execute<{ status: string }>(
      sql`SELECT verification_status AS status FROM pro_profiles WHERE user_id = ${pro}`,
    );
    // Settings must not become the way around verification.
    expect(rows[0]!.status).toBe('pending');

    const audit = await db.execute<{ count: number }>(sql`
      SELECT count(*)::int AS count FROM audit_log
      WHERE actor_id = ${pro} AND action = 'verification.re_review_required'
    `);
    expect(audit[0]!.count).toBeGreaterThan(0);
  });

  it('leaves verification alone when nothing material changed', async () => {
    await db.execute(
      sql`UPDATE pro_profiles SET verification_status = 'verified' WHERE user_id = ${pro}`,
    );

    // The radius the row already holds, and nothing else. Not material.
    const result = await callerFor(proSession(pro)).user.updateLocation({
      radiusM: 30_000,
    });
    expect(result.sentForReview).toBe(false);

    const rows = await db.execute<{ status: string }>(
      sql`SELECT verification_status AS status FROM pro_profiles WHERE user_id = ${pro}`,
    );
    expect(rows[0]!.status).toBe('verified');
  });
});

describe('data export', () => {
  it('returns only the caller’s own rows', async () => {
    const data = await callerFor(clientSession(alice)).user.exportData();
    expect(data.user?.id).toBe(alice);
    expect(data.jobs.every((j) => j.clientId === alice)).toBe(true);
  });
});