import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import test from 'node:test';
import type { Vehicle, VehicleRow } from '../../types.js';
import {
  FLOW_STATS_SQL,
  MAIN_SQL,
  VehicleRepository,
  WEEKLY_DETAIL_SQL,
  WEEKLY_TRUCK_ID_SQLS,
} from './repository.js';

class FakeDatabase {
  readonly calls: Array<{ sql: string; values?: any[] }> = [];

  constructor(private readonly responses: any[][]) {}

  async query<T = any[]>(sql: string, values?: any[]): Promise<[T, ...any[]]> {
    this.calls.push({ sql, values });
    return [this.responses.shift() as T];
  }
}

function vehicle(id: string): Vehicle {
  return { id } as Vehicle;
}

test('keeps all vehicle GET endpoints in their established order', () => {
  const source = readFileSync(new URL('./routes.ts', import.meta.url), 'utf8');
  const paths = Array.from(
    source.matchAll(/app\.get\('([^']+)'|app\.on\(\[([^\]]+)\],\s*'([^']+)'/g),
  ).flatMap((match) => match[1] ? [match[1]] : /'GET'/.test(match[2]) ? [match[3]] : []);

  assert.deepEqual(paths, [
    '/summary',
    '/by-type',
    '/by-batch',
    '/inventory-analysis',
    '/dept-stats',
    '/region-stats',
    '/customer-stats',
    '/analysis',
    '/list',
    '/inventory-stats',
    '/weekly-detail',
    '/flow-stats',
    '/subjects',
    '/refresh',
    '/debug',
    '/region-chart',
  ]);
  assert.doesNotMatch(source, /\bSELECT\b|pool\.query|MAIN_SQL/);
});

test('keeps the non-empty vehicle cache for less than 5 seconds', async () => {
  let now = 100_000;
  const db = new FakeDatabase([[{ id: 'first' }], [{ id: 'second' }]]);
  const repository = new VehicleRepository(
    db,
    () => now,
    (row: VehicleRow) => vehicle(row.id),
  );

  assert.deepEqual(await repository.getVehicles(), [vehicle('first')]);
  now += 4_999;
  assert.deepEqual(await repository.getVehicles(), [vehicle('first')]);
  now += 1;
  assert.deepEqual(await repository.getVehicles(), [vehicle('second')]);
  assert.deepEqual(db.calls.map((call) => call.sql), [MAIN_SQL, MAIN_SQL]);
});

test('keeps empty vehicle results uncached', async () => {
  const db = new FakeDatabase([[], []]);
  const repository = new VehicleRepository(db, () => 100_000);

  await repository.getVehicles();
  await repository.getVehicles();

  assert.equal(db.calls.length, 2);
});

test('refresh invalidates vehicles but retains the weekly truck-id cache', async () => {
  const db = new FakeDatabase([
    [{ id: 'first' }],
    [{ truck_id: 'pending' }],
    [{ truck_id: 'delivered' }],
    [{ truck_id: 'returned' }],
    [{ truck_id: 'replaced' }, { truck_id: null }],
    [{ id: 'second' }],
  ]);
  const repository = new VehicleRepository(
    db,
    () => 100_000,
    (row: VehicleRow) => vehicle(row.id),
  );

  await repository.getVehicles();
  const weeklyBefore = await repository.getWeeklyTruckIds();
  repository.invalidateRefreshCaches();
  assert.deepEqual(await repository.getVehicles(), [vehicle('second')]);
  assert.equal(await repository.getWeeklyTruckIds(), weeklyBefore);
  assert.deepEqual(db.calls.map((call) => call.sql), [MAIN_SQL, ...WEEKLY_TRUCK_ID_SQLS, MAIN_SQL]);
  assert.deepEqual([...weeklyBefore.replaced], ['replaced']);
});

test('keeps weekly detail SQL selection and flow date parameters unchanged', async () => {
  const db = new FakeDatabase([[{ truck_id: '1' }], [{ id: 'delivered-1' }]]);
  const repository = new VehicleRepository(db);

  assert.deepEqual(await repository.getWeeklyDetailRows('new'), [{ truck_id: '1' }]);
  assert.deepEqual(await repository.getFlowDetailRows('2026-08-01', '2026-08-13'), [{ id: 'delivered-1' }]);
  assert.deepEqual(db.calls, [
    { sql: WEEKLY_DETAIL_SQL.new, values: undefined },
    {
      sql: FLOW_STATS_SQL,
      values: ['2026-08-01', '2026-08-13', '2026-08-01', '2026-08-13'],
    },
  ]);
});

test('flow dates and inclusive day boundaries use operations signing times, retaining creation time only for display', () => {
  for (const [alias, field] of [['dv', 'delivery_completion_processed_time'], ['r', 'return_completion_processed_time']]) {
    assert.ok(FLOW_STATS_SQL.includes(`DATE_FORMAT(${alias}.${field}, '%Y-%m-%d') AS stat_date`));
    assert.ok(FLOW_STATS_SQL.includes(`AND ${alias}.${field} IS NOT NULL`));
    assert.ok(FLOW_STATS_SQL.includes(`AND ${alias}.${field} >= ?`));
    assert.ok(FLOW_STATS_SQL.includes(`AND ${alias}.${field} < DATE_ADD(?, INTERVAL 1 DAY)`));
    assert.ok(FLOW_STATS_SQL.includes(`DATE_FORMAT(${alias}.create_time, '%Y-%m-%d %H:%i:%s') AS submit_time`));
  }
  assert.doesNotMatch(FLOW_STATS_SQL, /AND \w+\.create_time/);
  assert.ok(FLOW_STATS_SQL.includes('ORDER BY flow.event_time DESC, flow.id DESC'));
});

test('flow retains multiple business events for the same vehicle', async () => {
  const events = [
    { id: 'delivered-1', truck_id: '1', type: 'delivered', stat_date: '2026-09-16' },
    { id: 'delivered-2', truck_id: '1', type: 'delivered', stat_date: '2026-09-16' },
    { id: 'returned-1', truck_id: '1', type: 'returned', stat_date: '2026-09-16' },
  ];
  const repository = new VehicleRepository(new FakeDatabase([events]));
  assert.deepEqual(await repository.getFlowDetailRows('2026-09-16', '2026-09-16'), events);
});


test('replacement trips come exclusively from linked delivery records', () => {
  assert.ok(FLOW_STATS_SQL.includes("CASE WHEN dv.vehicle_replacement_id IS NOT NULL THEN 'replaced' ELSE 'delivered' END AS type"));
  assert.ok(FLOW_STATS_SQL.includes("CASE WHEN dv.vehicle_replacement_id IS NOT NULL THEN '替换交车' ELSE '交车' END AS type_label"));
  assert.equal((FLOW_STATS_SQL.match(/FROM delivery_vehicle/g) || []).length, 1);
  assert.doesNotMatch(FLOW_STATS_SQL, /FROM vehicle_replacement|dv\.delivery_time|r\.arrival_time|vr\.replace_time/);
});

test('delivery and replacement trips include awaiting customer signature and exclude suspended subjects', () => {
  const [deliveries, returns] = FLOW_STATS_SQL.split('UNION ALL');
  assert.ok(deliveries.includes('AND dv.delivery_status IN (2,3,5,20)'));
  assert.ok(deliveries.includes('AND (dts.status IS NULL OR dts.status <> 10)'));
  assert.doesNotMatch(deliveries, /dts\.status\s*(?:=|IN)|dv\.delivery_status IN \(2,3,5\)/);
  assert.ok(returns.includes('AND r.status IN (2,3,5)'));
});

test('return history includes completed, signed and awaiting-signature statuses without arrival or settlement requirements', () => {
  const returns = FLOW_STATS_SQL.split('UNION ALL')[1];
  assert.ok(returns.includes('AND r.status IN (2,3,5)'));
  assert.ok(returns.includes('AND r.return_completion_processed_time >= ?'));
  assert.doesNotMatch(returns, /r\.is_arrived|r\.arrival_time|settlement|AND dts\.status|AND \(dts\.status/);
});