import { describe, expect, test } from 'bun:test';
import { normalize, planReconcile, type ImmichUser } from './reconcile';
import type { ProvisionableUser } from 'officerdb';

const user = (id: number, username: string, email: string): ProvisionableUser =>
  ({ id, username, email, name: null, role: 'Member' }) as ProvisionableUser;

// The real populations on alpha as of 2026-08-21, read from `GET /api/admin/users` and from
// `listProvisionableUsers()`. Real names rather than invented ones because every interesting case is
// already present here, and because a test built on the real overlap fails when the real overlap changes.
const PLATFORM = [
  user(24, 'conceiba', 'conceiba@gmail.com'),
  user(25, 'guipinto', 'tatudoemcampo@gmail.com'),
  user(26, 'fedra', 'fedrasantamaria@gmail.com'),
  user(27, 'diogo', 'dingoshf@gmail.com'),
];

const ADMIN_ID = '0e0b05c7';

const IMMICH: ImmichUser[] = [
  { id: ADMIN_ID, email: 'pastilhas@officer.dev', name: 'André Padez' }, // the connection's own account
  { id: 'aaaa1111', email: 'conceiba@gmail.com', name: 'Bruno Conceição' },
  { id: 'bbbb2222', email: 'fedrasantamaria@gmail.com', name: 'Fedra' },
  { id: 'cccc3333', email: 'jrg.conceicao@gmail.com', name: 'Jorge Conceição' }, // no Officer account
];

describe('the live instance, first run', () => {
  const plan = planReconcile({ users: PLATFORM, immichUsers: IMMICH, existing: [], adminImmichUserId: ADMIN_ID });

  test('links the two whose email already exists', () => {
    expect(plan.link.map((l) => l.user.email).sort()).toEqual(['conceiba@gmail.com', 'fedrasantamaria@gmail.com']);
    expect(plan.link.find((l) => l.user.id === 24)!.immich.id).toBe('aaaa1111');
  });

  test('creates the two with no Immich account', () => {
    expect(plan.create.map((u) => u.email).sort()).toEqual(['dingoshf@gmail.com', 'tatudoemcampo@gmail.com']);
  });

  test('leaves the account nobody on Officer owns, and never the admin', () => {
    expect(plan.leave.map((u) => u.email)).toEqual(['jrg.conceicao@gmail.com']);
  });

  // The bug the Jellyfin plugin shipped and had to fix in 591c0da: the owner is excluded from the
  // provisionable list on purpose, which made their own account read as belonging to nobody.
  test('reports the admin as itself rather than as unclaimed', () => {
    expect(plan.self?.email).toBe('pastilhas@officer.dev');
    expect(plan.leave.map((u) => u.email)).not.toContain('pastilhas@officer.dev');
  });
});

describe('a second run', () => {
  const existing = [
    { userId: 24, immichUserId: 'aaaa1111' },
    { userId: 26, immichUserId: 'bbbb2222' },
  ];
  const plan = planReconcile({ users: PLATFORM, immichUsers: IMMICH, existing, adminImmichUserId: ADMIN_ID });

  test('re-decides nothing that is already recorded', () => {
    expect(plan.link).toHaveLength(0);
    expect(plan.unchanged).toHaveLength(2);
  });

  test('still creates the two that are genuinely missing', () => {
    expect(plan.create.map((u) => u.id).sort()).toEqual([25, 27]);
  });

  test('does not report a linked account as unclaimed', () => {
    expect(plan.leave.map((u) => u.email)).toEqual(['jrg.conceicao@gmail.com']);
  });
});

describe('matching', () => {
  test('is case- and whitespace-insensitive, because Immich lowercases what it stores', () => {
    const plan = planReconcile({
      users: [user(30, 'shouty', '  FEDRASANTAMARIA@GMAIL.COM ')],
      immichUsers: IMMICH,
      existing: [],
      adminImmichUserId: ADMIN_ID,
    });
    expect(plan.create).toHaveLength(0);
    expect(plan.link[0]!.immich.id).toBe('bbbb2222');
  });

  test('normalize agrees with what Immich does to an address', () => {
    expect(normalize('  Fedra@Example.COM ')).toBe('fedra@example.com');
  });

  test('skips an Officer account with no email rather than inventing one', () => {
    const plan = planReconcile({
      users: [{ id: 31, username: 'nomail', email: '', name: null, role: 'Member' } as ProvisionableUser],
      immichUsers: IMMICH,
      existing: [],
      adminImmichUserId: ADMIN_ID,
    });
    expect(plan.create).toHaveLength(0);
    expect(plan.link).toHaveLength(0);
  });

  test('two Officer accounts cannot both claim one Immich account', () => {
    const plan = planReconcile({
      users: [user(40, 'a', 'fedrasantamaria@gmail.com'), user(41, 'b', 'FedraSantamaria@gmail.com')],
      immichUsers: IMMICH,
      existing: [],
      adminImmichUserId: ADMIN_ID,
    });
    expect(plan.link).toHaveLength(1);
    // The loser is not silently created either — that would duplicate an address Immich would refuse.
    expect(plan.create).toHaveLength(0);
  });
});

// The planned case: an Immich account that exists today with no Officer login, whose person gets an
// Officer account later. Provisioning must adopt it rather than build a second library beside it.
describe('an Immich-only account whose owner joins Officer later', () => {
  const joined = [...PLATFORM, user(28, 'jorge', 'jrg.conceicao@gmail.com')];
  const plan = planReconcile({
    users: joined,
    immichUsers: IMMICH,
    existing: [
      { userId: 24, immichUserId: 'aaaa1111' },
      { userId: 26, immichUserId: 'bbbb2222' },
    ],
    adminImmichUserId: ADMIN_ID,
  });

  test('links them to the photographs they already have', () => {
    expect(plan.link.map((l) => l.user.id)).toEqual([28]);
    expect(plan.link[0]!.immich.id).toBe('cccc3333');
  });

  test('does not create a second account for the same address', () => {
    expect(plan.create.map((u) => u.email)).not.toContain('jrg.conceicao@gmail.com');
  });

  test('stops reporting them as belonging to nobody', () => {
    expect(plan.leave).toHaveLength(0);
  });
});

describe('an account deleted in Immich behind Officer’s back', () => {
  const plan = planReconcile({
    users: PLATFORM,
    immichUsers: IMMICH,
    existing: [{ userId: 25, immichUserId: 'gone9999' }],
    adminImmichUserId: ADMIN_ID,
  });

  test('is reported as broken rather than quietly recreated', () => {
    expect(plan.brokenLinks).toEqual([{ userId: 25, immichUserId: 'gone9999' }]);
    expect(plan.create.map((u) => u.id)).not.toContain(25);
  });
});