import { describe, expect, it } from 'vitest';
import {
  validateCourseAgentAnchor,
  validateCoursePackageDescriptor,
} from '../src/index.js';

const SHA = 'a'.repeat(64);

describe('course package descriptor', () => {
  it('accepts immutable unique-course metadata without a product version', () => {
    const descriptor = {
      schemaVersion: 1,
      kind: 'makelore-course-package',
      courseId: 'course_python_basics',
      contentHash: SHA,
      archiveSha256: 'b'.repeat(64),
      archiveBytes: 1024,
      formatVersion: 1,
      minPlayerVersion: '0.1.0',
      title: 'Python 零基础入门',
      sceneCount: 10,
      capabilities: {
        sceneKinds: ['slide', 'interactive', 'quiz'],
        hasAudio: false,
        hasWhiteboard: false,
        hasAgent: true,
      },
      createdAt: '2026-08-16T00:00:00.000Z',
    };

    expect(validateCoursePackageDescriptor(descriptor)).toEqual({
      ok: true,
      value: descriptor,
      errors: [],
    });
    expect(descriptor).not.toHaveProperty('version');
  });

  it('rejects malformed hashes and zero-byte archives', () => {
    const result = validateCoursePackageDescriptor({
      schemaVersion: 1,
      kind: 'makelore-course-package',
      courseId: 'course_1',
      contentHash: 'bad',
      archiveSha256: SHA,
      archiveBytes: 0,
      formatVersion: 1,
      minPlayerVersion: '0.1.0',
      title: 'Course',
      sceneCount: 1,
      capabilities: {
        sceneKinds: ['slide'],
        hasAudio: false,
        hasWhiteboard: false,
        hasAgent: false,
      },
      createdAt: '2026-08-16T00:00:00.000Z',
    });

    expect(result.ok).toBe(false);
    expect(result.errors).toContain('contentHash must be a SHA-256 hex string');
    expect(result.errors).toContain('archiveBytes must be a positive integer');
  });
});

describe('agent anchor', () => {
  it('binds an Agent request to an exact course and playback position', () => {
    expect(
      validateCourseAgentAnchor({
        courseId: 'course_python_basics',
        contentHash: SHA,
        sceneOrder: 2,
        actionIndex: 1,
        positionMs: 3200,
      }).ok,
    ).toBe(true);
  });
});