import { describe, expect, it } from 'vitest';
import { dispatchSelection } from './RightPane';
import type { ContractState, PlaneState } from '@/lib/game/state';

// v0.10.1 — the per-contract dispatch picker rule: a row's effective selection is the user's
// explicit pick while it stays eligible (available AND at the contract origin), else NOTHING
// (placeholder). The old "auto-track first eligible" fallback made every accepted-contract row
// display the same plane, so selections looked shared across contracts.

const contract: ContractState = {
  id: 'contract-a',
  originIcao: 'EDDF',
  originName: 'Frankfurt Main',
  destIcao: 'EDDM',
  destName: 'Munich',
  reward: 1000,
  cargoType: 'mail',
  cargoCount: 4,
  deadlineSimTime: 1_000_000,
  status: 'accepted',
  planeId: null,
  createdSimTime: 0,
};

function plane(over: Partial<PlaneState> & Pick<PlaneState, 'id'>): PlaneState {
  return {
    model: 'atr72',
    status: 'available',
    fuel: 100,
    maxFuel: 100,
    locationIcao: 'EDDF',
    locationName: 'Frankfurt Main',
    contractId: null,
    departureSimTime: null,
    lat: 50,
    lon: 8.5,
    ...over,
  };
}

describe('dispatchSelection (per-contract dispatch picker rule)', () => {
  it('defaults to the placeholder — no auto-selection of the first eligible plane', () => {
    const planes = [plane({ id: 'p1' }), plane({ id: 'p2' })]; // both eligible at EDDF
    expect(dispatchSelection(planes, contract, null)).toBeNull();
  });

  it('returns the user pick while it stays eligible (available AND at the origin)', () => {
    const planes = [plane({ id: 'p1' }), plane({ id: 'p2', locationIcao: 'EDDM' })];
    expect(dispatchSelection(planes, contract, 'p1')?.id).toBe('p1');
  });

  it('drops to the placeholder when a poll makes the pick ineligible (flew away)', () => {
    const planes = [plane({ id: 'p1', status: 'flying' })];
    expect(dispatchSelection(planes, contract, 'p1')).toBeNull();
  });

  it('drops to the placeholder when a poll moves the pick off the origin', () => {
    const planes = [plane({ id: 'p1', locationIcao: 'EDDM' })];
    expect(dispatchSelection(planes, contract, 'p1')).toBeNull();
  });

  it('unknown selection id resolves to the placeholder', () => {
    const planes = [plane({ id: 'p1' })];
    expect(dispatchSelection(planes, contract, 'no-such-plane')).toBeNull();
  });
});