import { describe, test, expect, beforeEach, mock } from 'bun:test';
import { PLCBundle } from '../src/plcbundle';
import { TEMP_DIR } from './setup';

describe('Clone Functionality', () => {
  let bundle: PLCBundle;
  
  beforeEach(() => {
    bundle = new PLCBundle(TEMP_DIR);
  });

  describe('clone', () => {
    test('validates bundle range', async () => {
      // Mock fetch to return an index
      const mockFetch = mock(() => 
        Promise.resolve(new Response(JSON.stringify({
          version: "1.0",
          last_bundle: 10,
          updated_at: new Date().toISOString(),
          total_size_bytes: 1000000,
          bundles: [],
        })))
      );
      
      global.fetch = mockFetch as any;
      
      try {
        await bundle.clone('http://example.com', {
          bundles: '1-999', // Invalid range
        });
        expect(true).toBe(false); // Should not reach here
      } catch (error) {
        expect(error).toBeDefined();
        expect((error as Error).message).toContain('Invalid bundle range');
      }
    });

    test('parses bundle selection correctly', async () => {
      const mockFetch = mock(() => 
        Promise.resolve(new Response(JSON.stringify({
          version: "1.0",
          last_bundle: 100,
          updated_at: new Date().toISOString(),
          total_size_bytes: 1000000,
          bundles: Array.from({ length: 100 }, (_, i) => ({
            bundle_number: i + 1,
            start_time: "2024-01-01T00:00:00.000Z",
            end_time: "2024-01-01T01:00:00.000Z",
            operation_count: 10000,
            did_count: 9500,
            hash: `hash${i}`,
            content_hash: `content${i}`,
            parent: i > 0 ? `hash${i-1}` : "",
            compressed_hash: `compressed${i}`,
            compressed_size: 1500000,
            uncompressed_size: 5000000,
            cursor: "",
            created_at: "2024-01-01T02:00:00.000Z",
          })),
        })))
      );
      
      global.fetch = mockFetch as any;
      
      // Test single bundle
      expect(bundle.clone).toBeDefined();
      
      // Test range
      expect(bundle.clone).toBeDefined();
    });

    test('tracks download statistics', async () => {
      const progressCallback = mock(() => {});
      
      // Would need a mock server to fully test
      expect(progressCallback).toBeDefined();
    });
  });
});