import { describe, expect, it } from 'vitest';
import { buildContent } from '../schema';

const validResources = [{ id: 'gold', name: 'Gold' }];
const validActions = [
  {
    id: 'forage',
    name: 'Forage',
    durationMs: 3000,
    yields: [{ resourceId: 'gold', amount: 1 }],
  },
];

describe('buildContent()', () => {
  it('validates definitions and indexes them by id', () => {
    const content = buildContent({ resources: validResources, actions: validActions });
    expect(content.resourcesById.gold.name).toBe('Gold');
    expect(content.actionsById.forage.durationMs).toBe(3000);
  });

  it('applies the startAmount default of 0', () => {
    const content = buildContent({ resources: validResources, actions: validActions });
    expect(content.resourcesById.gold.startAmount).toBe(0);
  });

  it('rejects an action that yields an unknown resource', () => {
    const actions = [
      {
        id: 'forage',
        name: 'Forage',
        durationMs: 3000,
        yields: [{ resourceId: 'ghost', amount: 1 }],
      },
    ];
    expect(() => buildContent({ resources: validResources, actions })).toThrow(/unknown resource/i);
  });

  it('rejects duplicate resource ids', () => {
    const resources = [
      { id: 'gold', name: 'Gold' },
      { id: 'gold', name: 'Gold Again' },
    ];
    expect(() => buildContent({ resources, actions: validActions })).toThrow(/duplicate/i);
  });

  it('rejects a structurally invalid definition', () => {
    const actions = [
      {
        id: 'forage',
        name: 'Forage',
        durationMs: -1,
        yields: [{ resourceId: 'gold', amount: 1 }],
      },
    ];
    expect(() => buildContent({ resources: validResources, actions })).toThrow();
  });
});

describe('costs and multi-yield', () => {
  it('accepts optional costs and multiple yields', () => {
    const resources = [
      { id: 'gold', name: 'Gold' },
      { id: 'wood', name: 'Wood' },
    ];
    const actions = [
      {
        id: 'craft',
        name: 'Craft',
        durationMs: 1000,
        costs: [{ resourceId: 'wood', amount: 2 }],
        yields: [
          { resourceId: 'gold', amount: 1 },
          { resourceId: 'wood', amount: 1 },
        ],
      },
    ];
    const content = buildContent({ resources, actions });
    expect(content.actionsById.craft.costs).toEqual([{ resourceId: 'wood', amount: 2 }]);
    expect(content.actionsById.craft.yields).toHaveLength(2);
  });

  it('rejects cost referencing unknown resource', () => {
    const actions = [
      {
        id: 'craft',
        name: 'Craft',
        durationMs: 1000,
        costs: [{ resourceId: 'ghost', amount: 1 }],
        yields: [{ resourceId: 'gold', amount: 1 }],
      },
    ];
    expect(() => buildContent({ resources: validResources, actions })).toThrow(/unknown resource/i);
  });

  it('defaults costs to empty array', () => {
    const content = buildContent({ resources: validResources, actions: validActions });
    expect(content.actionsById.forage.costs).toEqual([]);
  });
});

describe('unlock conditions', () => {
  it('accepts optional minResources and requireStoryFlags', () => {
    const actions = [
      {
        id: 'forage',
        name: 'Forage',
        durationMs: 3000,
        yields: [{ resourceId: 'gold', amount: 1 }],
        unlock: {
          minResources: { gold: 10 },
          requireStoryFlags: ['intro_complete'],
        },
      },
    ];
    const content = buildContent({ resources: validResources, actions });
    expect(content.actionsById.forage.unlock).toEqual({
      minResources: { gold: 10 },
      requireStoryFlags: ['intro_complete'],
    });
  });

  it('defaults unlock to undefined when omitted', () => {
    const content = buildContent({ resources: validResources, actions: validActions });
    expect(content.actionsById.forage.unlock).toBeUndefined();
  });
});

describe('action narrative fields', () => {
  it('accepts optional storyHint and storyTooltip', () => {
    const actions = [
      {
        id: 'forage',
        name: 'Forage',
        durationMs: 3000,
        yields: [{ resourceId: 'gold', amount: 1 }],
        storyHint: 'Gather what the forest offers.',
        storyTooltip: 'Your first step into the wild.',
      },
    ];
    const content = buildContent({ resources: validResources, actions });
    expect(content.actionsById.forage.storyHint).toBe('Gather what the forest offers.');
    expect(content.actionsById.forage.storyTooltip).toBe('Your first step into the wild.');
  });

  it('defaults storyHint and storyTooltip to undefined when omitted', () => {
    const content = buildContent({ resources: validResources, actions: validActions });
    expect(content.actionsById.forage.storyHint).toBeUndefined();
    expect(content.actionsById.forage.storyTooltip).toBeUndefined();
  });
});