import { describe, expect, test } from 'bun:test';
import { AssetService } from '../src/lib/domain/assets';
import { ESI_ASSETS_SCOPE, manufacturingCapabilityGate } from '../src/lib/domain/capabilities';
import { addIsk, multiplyIsk, sumIsk, validateQuantity } from '../src/lib/domain/money';
import { distanceLightYears, EVE_METERS_PER_LIGHT_YEAR } from '../src/lib/domain/routing';
import type {
  Character,
  CharacterAssetRepository,
  MarketEstimates,
  ReferenceRepository,
} from '../src/lib/domain/model';

const now = 1_000;

function character(id: number, overrides: Partial<Character> = {}): Character {
  return {
    id,
    userId: 'user-a',
    name: `Pilot ${id}`,
    scopes: [ESI_ASSETS_SCOPE],
    assets: { status: 'ready', syncedAt: 900, expiresAt: 2_000 },
    ...overrides,
  };
}

function ports(
  characters: Character[],
  assets: Record<number, unknown[]> = {},
  market: unknown = { prices: [], source: 'fixture', asOf: 900, expiresAt: 2_000 },
) {
  let assetCalls = 0;
  const repository: CharacterAssetRepository = {
    characters: async () => characters,
    assets: async (_userId, id) => {
      assetCalls += 1;
      return (assets[id] ?? []) as never[];
    },
  };
  const reference: ReferenceRepository = {
    types: async (ids) => ids.map((id) => ({ id, name: `Type ${id}`, categoryId: 1 })),
    version: async () => 'fixture-v1',
  };
  const markets: MarketEstimates = { estimates: async () => market as never };
  return { repository, reference, markets, get assetCalls() { return assetCalls; } };
}

const asset = (characterId: number, itemId: string, typeId: number, quantity: number, isBlueprintCopy?: boolean) => ({
  characterId,
  itemId,
  typeId,
  quantity,
  locationId: '60000001',
  locationType: 'station',
  locationFlag: 'hangar',
  ...(isBlueprintCopy === undefined ? {} : { isBlueprintCopy }),
});

describe('money domain helpers', () => {
  test('uses integer cents and BigInt accumulation', () => {
    expect(addIsk('100', '25')).toBe('125');
    expect(sumIsk(['9007199254740992', '8'])).toBe('9007199254741000');
    expect(multiplyIsk('125', 3)).toBe('375');
  });

  test('rejects unsafe, fractional, and negative inventory quantities', () => {
    expect(() => validateQuantity(Number.MAX_SAFE_INTEGER + 1)).toThrow();
    expect(() => validateQuantity(1.5)).toThrow();
    expect(() => validateQuantity(-1)).toThrow();
  });
});

describe('AssetService', () => {
  test('returns an auth gate before touching lazy repositories', async () => {
    const service = new AssetService(
      { characters: async () => { throw new Error('must not run'); }, assets: async () => { throw new Error('must not run'); } },
      { version: async () => { throw new Error('must not run'); }, types: async () => { throw new Error('must not run'); } },
      { estimates: async () => { throw new Error('must not run'); } },
      now,
    );
    const result = await service.report(null);
    expect(result.status).toBe('authentication_required');
  });

  test('a logged-in user with no characters must connect, not receive a zero valuation', async () => {
    const p = ports([]);
    const result = await new AssetService(p.repository, p.reference, p.markets, now).report('user-a');
    expect(result).toMatchObject({ status: 'requirements_missing', missing: [{ requirement: 'assets', reason: 'authorization' }] });
    expect(p.assetCalls).toBe(0);
  });

  test('duplicate instance IDs in one character snapshot cannot inflate totals', async () => {
    const row = asset(1, '123', 34, 2);
    const p = ports([character(1)], { 1: [row, row] });
    expect(await new AssetService(p.repository, p.reference, p.markets, now).report('user-a')).toMatchObject({ status: 'unavailable' });
  });

  test('requires the exact assets scope and refuses partial character coverage', async () => {
    const p = ports([
      character(1),
      character(2, { scopes: ['esi-assets.read_assets.v1.extra'], assets: { status: 'syncing' } }),
    ]);
    const result = await new AssetService(p.repository, p.reference, p.markets, now).report('user-a');
    expect(result.status).toBe('requirements_missing');
    if (result.status === 'requirements_missing') {
      expect(result.missing).toEqual([
        { requirement: 'assets', characterId: 2, reason: 'authorization' },
        { requirement: 'assets', characterId: 2, reason: 'synchronization' },
      ]);
    }
    expect(p.assetCalls).toBe(0);
  });

  test('rejects stale snapshots rather than aggregating ready characters only', async () => {
    const p = ports([character(1), character(2, { assets: { status: 'ready', syncedAt: 100, expiresAt: 1_000 } })]);
    const result = await new AssetService(p.repository, p.reference, p.markets, now).report('user-a');
    expect(result.status).toBe('requirements_missing');
    if (result.status === 'requirements_missing') {
      expect(result.missing).toContainEqual({ requirement: 'assets', characterId: 2, reason: 'stale' });
    }
  });

  test('aggregates characters and explicitly excludes unknown, missing-price, and BPC rows', async () => {
    const p = ports(
      [character(2), character(1)],
      {
        1: [asset(1, '2', 1, 2), asset(1, '3', 99, 4)],
        2: [asset(2, '1', 2, 3), asset(2, '4', 3, 1, true)],
      },
      { prices: [{ typeId: 1, unitPrice: '125' }, { typeId: 2, unitPrice: '300' }], source: 'fixture', asOf: 900, expiresAt: 2_000 },
    );
    p.reference.types = async (ids) => ids.filter((id) => id !== 99).map((id) => ({ id, name: `Type ${id}`, categoryId: 1 }));
    const result = await new AssetService(p.repository, p.reference, p.markets, now).report('user-a');
    expect(result.status).toBe('ready');
    if (result.status === 'ready') {
      expect(result.report.total).toBe('1150');
      expect(result.report.items.map((item) => item.exclusion)).toEqual([undefined, 'unknown_type', undefined, 'blueprint_copy']);
      expect(result.report.unpricedItems).toBe(2);
      expect(result.report.prices.source).toBe('fixture');
    }
  });

  test('fails closed for stale and malformed market data', async () => {
    const stale = ports([character(1)], { 1: [asset(1, '1', 1, 1)] }, { prices: [{ typeId: 1, unitPrice: '1' }], source: 'fixture', asOf: 0, expiresAt: now });
    const staleResult = await new AssetService(stale.repository, stale.reference, stale.markets, now).report('user-a');
    expect(staleResult).toMatchObject({ status: 'requirements_missing', missing: [{ requirement: 'market_data', reason: 'stale' }] });

    const malformed = ports([character(1)], { 1: [asset(1, '1', 1, 1)] }, { prices: [{ typeId: 1, unitPrice: '-1' }], source: 'fixture', asOf: 900, expiresAt: 2_000 });
    const malformedResult = await new AssetService(malformed.repository, malformed.reference, malformed.markets, now).report('user-a');
    expect(malformedResult).toMatchObject({ status: 'unavailable' });
  });

  test('rejects cross-user character data', async () => {
    const p = ports([character(1, { userId: 'other-user' })]);
    const result = await new AssetService(p.repository, p.reference, p.markets, now).report('user-a');
    expect(result).toMatchObject({ status: 'unavailable' });
  });
});

test('manufacturing gate names unimplemented skills and blueprints', () => {
  expect(manufacturingCapabilityGate('user-a')).toEqual({
    status: 'requirements_missing',
    capability: 'manufacturing_opportunities',
    missing: [
      { requirement: 'skills', reason: 'not_implemented' },
      { requirement: 'blueprints', reason: 'not_implemented' },
    ],
    actions: [],
  });
});

test('routing uses the exact EVE light-year constant and finite XYZ', () => {
  expect(EVE_METERS_PER_LIGHT_YEAR).toBe(9_460_000_000_000_000);
  expect(distanceLightYears({ systemId: 1, x: 0, y: 0, z: 0 }, { systemId: 2, x: EVE_METERS_PER_LIGHT_YEAR, y: 0, z: 0 })).toBe(1);
  expect(() => distanceLightYears({ systemId: 1, x: Number.NaN, y: 0, z: 0 }, { systemId: 2, x: 0, y: 0, z: 0 })).toThrow();
});