import { describe, expect, it } from 'vitest';
import { MovieRecommenderTool } from '../../../src/app/tools/MovieRecommenderTool';
import type { RunContext } from '../../../src/core/llm/RunContext';
import type { Movie } from '../../../src/app/models';

function makeTool() {
  return new MovieRecommenderTool(
    {} as unknown as ConstructorParameters<typeof MovieRecommenderTool>[0],
    {} as unknown as ConstructorParameters<typeof MovieRecommenderTool>[1]
  ) as unknown as {
    buildVariables(input: unknown, ctx: RunContext): Record<string, unknown>;
    parseOutput(raw: string, ctx: RunContext): unknown;
  };
}

const movie = (name: string, year: number): Movie => ({
  name,
  year,
  imdbId: '',
  tmdbId: '',
  genres: [],
  communityRating: 0,
  isFavorite: false,
  playCount: 0,
});

describe('MovieRecommenderTool.buildVariables', () => {
  it('formats favorites/watched/library/previouslySuggested as readable lists', () => {
    const tool = makeTool();
    const variables = tool.buildVariables(
      {
        favorites: [movie('Dune', 2021)],
        watched: [],
        library: [movie('Arrival', 2016)],
        previouslySuggested: [],
        count: 5,
      },
      {} as RunContext
    );

    expect(variables).toEqual({
      count: 5,
      favorites: '- Dune (2021)',
      watched: '(none)',
      library: '- Arrival (2016)',
      previouslySuggested: '(none)',
    });
  });
});

describe('MovieRecommenderTool.parseOutput', () => {
  it('validates suggestions against the movie suggestion schema', () => {
    const tool = makeTool();
    const result = tool.parseOutput(
      '[{"title":"Dune","year":2021,"reason":"sci-fi epic"}]',
      {} as RunContext
    );
    expect(result).toEqual([{ title: 'Dune', year: 2021, reason: 'sci-fi epic' }]);
  });
});