import { describe, expect, it } from 'vitest';
import { buildContent } from '../../content/schema';
import { createGameState, enqueueAction, startAction } from '../../engine/game';
import { formatOfflineDuration, toView } from '../viewModel';

function testContent() {
  return buildContent({
    resources: [{ id: 'gold', name: 'Gold', startAmount: 4 }],
    actions: [
      {
        id: 'forage',
        name: 'Forage',
        durationMs: 200,
        yields: [{ resourceId: 'gold', amount: 1 }],
      },
    ],
  });
}

describe('toView()', () => {
  it('maps resources with their names and amounts', () => {
    const content = testContent();
    const view = toView(createGameState(content), content);
    expect(view.resources).toEqual([{ id: 'gold', name: 'Gold', amount: 4 }]);
  });

  it('reports no progress and no action name when idle', () => {
    const content = testContent();
    const view = toView(createGameState(content), content);
    expect(view.activeActionId).toBeNull();
    expect(view.actionName).toBeNull();
    expect(view.actionProgress).toBe(0);
  });

  it('reports the active action name and fractional progress', () => {
    const content = testContent();
    const state = createGameState(content);
    startAction(state, content, 'forage');
    state.actionElapsedMs = 50; // of 200ms
    const view = toView(state, content);
    expect(view.actionName).toBe('Forage');
    expect(view.actionProgress).toBeCloseTo(0.25);
  });

  it('clamps progress to at most 1', () => {
    const content = testContent();
    const state = createGameState(content);
    startAction(state, content, 'forage');
    state.actionElapsedMs = 999;
    expect(toView(state, content).actionProgress).toBe(1);
  });

  it('includes queued action ids in order', () => {
    const content = buildContent({
      resources: [{ id: 'gold', name: 'Gold' }],
      actions: [
        { id: 'a', name: 'Alpha', durationMs: 1000, yields: [{ resourceId: 'gold', amount: 1 }] },
        { id: 'b', name: 'Bravo', durationMs: 1000, yields: [{ resourceId: 'gold', amount: 1 }] },
      ],
    });
    const state = createGameState(content);
    enqueueAction(state, content, 'a');
    enqueueAction(state, content, 'b');
    const view = toView(state, content);
    expect(view.queuedActionIds).toEqual(['b']);
    expect(view.queuedActionNames).toEqual(['Bravo']);
  });
});

describe('formatOfflineDuration()', () => {
  it('formats sub-minute durations in seconds', () => {
    expect(formatOfflineDuration(0)).toBe('0s');
    expect(formatOfflineDuration(45_000)).toBe('45s');
  });

  it('formats minutes with seconds', () => {
    expect(formatOfflineDuration(90_000)).toBe('1m 30s');
    expect(formatOfflineDuration(120_000)).toBe('2m');
  });

  it('formats hours with minutes', () => {
    expect(formatOfflineDuration(3_660_000)).toBe('1h 1m');
    expect(formatOfflineDuration(7_200_000)).toBe('2h');
  });
});