import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as opendata from '../ts/index.js';

// Test configuration
const TEST_USER_AGENT = 'fin.cx test@fin.cx';
const TEST_TICKER = 'AAPL'; // Apple Inc - well-known test case
const RATE_LIMIT_DELAY = 150; // 150ms between requests (< 10 req/sec)

tap.test('SEC EDGAR Provider - Constructor', async () => {
  await tap.test('should create provider with valid User-Agent', async () => {
    const provider = new opendata.SecEdgarProvider({
      userAgent: TEST_USER_AGENT
    });

    expect(provider.name).toEqual('SEC EDGAR');
    expect(provider.priority).toEqual(100);
    expect(provider.requiresAuth).toBe(false);
    expect(provider.rateLimit?.requestsPerMinute).toEqual(600);
  });

  await tap.test('should throw error if User-Agent is missing', async () => {
    expect(() => {
      new opendata.SecEdgarProvider({
        userAgent: ''
      });
    }).toThrow('User-Agent is required');
  });

  await tap.test('should throw error if User-Agent format is invalid', async () => {
    expect(() => {
      new opendata.SecEdgarProvider({
        userAgent: 'InvalidFormat'
      });
    }).toThrow('Invalid User-Agent format');
  });

  await tap.test('should accept valid User-Agent with space and email', async () => {
    const provider = new opendata.SecEdgarProvider({
      userAgent: 'MyCompany contact@example.com'
    });

    expect(provider).toBeInstanceOf(opendata.SecEdgarProvider);
  });
});

tap.test('SEC EDGAR Provider - Availability', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT
  });

  await tap.test('should report as available', async () => {
    const isAvailable = await provider.isAvailable();
    expect(isAvailable).toBe(true);
  });
});

tap.test('SEC EDGAR Provider - Fetch Fundamentals', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT,
    timeout: 30000
  });

  await tap.test('should fetch fundamentals for Apple (AAPL)', async () => {
    const fundamentals = await provider.fetchData({
      type: 'fundamentals-current',
      ticker: TEST_TICKER
    });

    // Verify structure
    expect(fundamentals).toBeDefined();
    expect(fundamentals).not.toBeInstanceOf(Array);

    const data = fundamentals as opendata.IStockFundamentals;

    // Basic fields
    expect(data.ticker).toEqual('AAPL');
    expect(data.cik).toBeDefined();
    expect(data.companyName).toEqual('Apple Inc.');
    expect(data.provider).toEqual('SEC EDGAR');
    expect(data.timestamp).toBeInstanceOf(Date);
    expect(data.fetchedAt).toBeInstanceOf(Date);

    // Financial metrics (Apple should have all of these)
    expect(data.earningsPerShareDiluted).toBeDefined();
    expect(data.earningsPerShareDiluted).toBeGreaterThan(0);

    expect(data.sharesOutstanding).toBeDefined();
    expect(data.sharesOutstanding).toBeGreaterThan(0);

    expect(data.revenue).toBeDefined();
    expect(data.revenue).toBeGreaterThan(0);

    expect(data.netIncome).toBeDefined();
    expect(data.assets).toBeDefined();
    expect(data.assets).toBeGreaterThan(0);

    expect(data.liabilities).toBeDefined();
    expect(data.stockholdersEquity).toBeDefined();

    // Metadata
    expect(data.fiscalYear).toBeDefined();

    console.log('\n📊 Sample Apple Fundamentals:');
    console.log(`  Company: ${data.companyName} (CIK: ${data.cik})`);
    console.log(`  EPS (Diluted): $${data.earningsPerShareDiluted?.toFixed(2)}`);
    console.log(`  Shares Outstanding: ${(data.sharesOutstanding! / 1_000_000_000).toFixed(2)}B`);
    console.log(`  Revenue: $${(data.revenue! / 1_000_000_000).toFixed(2)}B`);
    console.log(`  Net Income: $${(data.netIncome! / 1_000_000_000).toFixed(2)}B`);
    console.log(`  Assets: $${(data.assets! / 1_000_000_000).toFixed(2)}B`);
    console.log(`  Fiscal Year: ${data.fiscalYear}`);
  });

  await tap.test('should throw error for invalid ticker', async () => {
    try {
      await provider.fetchData({
        type: 'fundamentals-current',
        ticker: 'INVALIDTICKER123456'
      });
      throw new Error('Should have thrown error');
    } catch (error) {
      expect(error.message).toContain('CIK not found');
    }
  });
});

tap.test('SEC EDGAR Provider - Batch Fetch', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT,
    timeout: 30000
  });

  await tap.test('should fetch fundamentals for multiple tickers', async () => {
    const result = await provider.fetchData({
      type: 'fundamentals-batch',
      tickers: ['AAPL', 'MSFT']
    });

    expect(result).toBeInstanceOf(Array);

    const fundamentalsList = result as opendata.IStockFundamentals[];
    expect(fundamentalsList.length).toEqual(2);

    // Check Apple
    const apple = fundamentalsList.find(f => f.ticker === 'AAPL');
    expect(apple).toBeDefined();
    expect(apple!.companyName).toEqual('Apple Inc.');
    expect(apple!.earningsPerShareDiluted).toBeGreaterThan(0);

    // Check Microsoft
    const microsoft = fundamentalsList.find(f => f.ticker === 'MSFT');
    expect(microsoft).toBeDefined();
    expect(microsoft!.companyName).toContain('Microsoft');
    expect(microsoft!.earningsPerShareDiluted).toBeGreaterThan(0);

    console.log('\n📊 Batch Fetch Results:');
    fundamentalsList.forEach(f => {
      console.log(`  ${f.ticker}: ${f.companyName} - EPS: $${f.earningsPerShareDiluted?.toFixed(2)}`);
    });
  });
});

tap.test('SEC EDGAR Provider - CIK Caching', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT
  });

  await tap.test('should cache CIK lookups', async () => {
    // Clear cache first
    provider.clearCache();

    let stats = provider.getCacheStats();
    expect(stats.cikCacheSize).toEqual(0);

    // First fetch (should populate cache)
    await provider.fetchData({
      type: 'fundamentals-current',
      ticker: 'AAPL'
    });

    stats = provider.getCacheStats();
    expect(stats.cikCacheSize).toBeGreaterThan(0);

    console.log(`\n💾 CIK Cache: ${stats.cikCacheSize} entries`);
  });

  await tap.test('should clear cache', async () => {
    provider.clearCache();

    const stats = provider.getCacheStats();
    expect(stats.cikCacheSize).toEqual(0);
    expect(stats.hasTickerList).toBe(false);
  });
});

tap.test('SEC EDGAR Provider - Rate Limiting', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT
  });

  await tap.test('should handle multiple rapid requests without exceeding rate limit', async () => {
    // Make 5 requests in succession
    // Rate limiter should ensure we don't exceed 10 req/sec
    const tickers = ['AAPL', 'MSFT', 'GOOGL', 'AMZN', 'META'];
    const startTime = Date.now();

    const promises = tickers.map(ticker =>
      provider.fetchData({
        type: 'fundamentals-current',
        ticker
      })
    );

    const results = await Promise.all(promises);
    const duration = Date.now() - startTime;

    expect(results.length).toEqual(5);
    console.log(`\n⏱️  5 requests completed in ${duration}ms (avg: ${Math.round(duration / 5)}ms/request)`);

    // Verify all results are valid
    results.forEach((result, index) => {
      expect(result).toBeDefined();
      const data = result as opendata.IStockFundamentals;
      expect(data.ticker).toEqual(tickers[index]);
      expect(data.earningsPerShareDiluted).toBeGreaterThan(0);
    });
  });
});

tap.test('SEC EDGAR Provider - Market Cap Calculation', async () => {
  const provider = new opendata.SecEdgarProvider({
    userAgent: TEST_USER_AGENT
  });

  await tap.test('should provide data needed for market cap calculation', async () => {
    const fundamentals = await provider.fetchData({
      type: 'fundamentals-current',
      ticker: 'AAPL'
    }) as opendata.IStockFundamentals;

    expect(fundamentals.sharesOutstanding).toBeDefined();
    expect(fundamentals.earningsPerShareDiluted).toBeDefined();

    // Simulate current price (in real usage, this comes from price provider)
    const simulatedPrice = 270.37;

    // Calculate market cap
    const marketCap = fundamentals.sharesOutstanding! * simulatedPrice;
    const pe = simulatedPrice / fundamentals.earningsPerShareDiluted!;

    console.log('\n💰 Calculated Metrics (with simulated price $270.37):');
    console.log(`  Shares Outstanding: ${(fundamentals.sharesOutstanding! / 1_000_000_000).toFixed(2)}B`);
    console.log(`  Market Cap: $${(marketCap / 1_000_000_000_000).toFixed(2)}T`);
    console.log(`  EPS: $${fundamentals.earningsPerShareDiluted!.toFixed(2)}`);
    console.log(`  P/E Ratio: ${pe.toFixed(2)}`);

    expect(marketCap).toBeGreaterThan(0);
    expect(pe).toBeGreaterThan(0);
  });
});

export default tap.start();