import { pool } from './src/db/pool';
import { DispensingService } from './src/modules/dispensing/service';

async function runTest() {
  const dispensingService = new DispensingService();
  const tenantId = 't1';
  
  // 1. Create a fake product with MRP = 20, pack_size = 10
  const productId = 'prd_test_' + Date.now();
  await pool.query(`
    INSERT INTO products (id, brand_name, mrp, pack_size, tenant_id) 
    VALUES ($1, 'Test Medicine Strip', 20.00, 10, $2)
  `, [productId, tenantId]);
  
  console.log(`Created product: ${productId} with MRP 20 and pack_size 10`);

  // 2. Add some stock for it so it doesn't fail expiry/stock checks
  const batchNo = 'B_TEST_' + Date.now();
  const nextYear = new Date(Date.now() + 365*24*60*60*1000).toISOString();
  await pool.query(`
    INSERT INTO batches (batch_no, product_id, expiry, qty_on_hand, tenant_id)
    VALUES ($1, $2, $3, 100, $4)
  `, [batchNo, productId, nextYear, tenantId]);
  console.log(`Added batch ${batchNo} with 100 qty`);

  // 3. Test Dispensing Flow (Dispense 10 tablets)
  const payload = {
    subject_ref: 'Patient_123',
    items: [
      { product_id: productId, qty: 10 }
    ]
  };

  try {
    console.log(`\nAttempting to dispense 10 tablets...`);
    const result = await dispensingService.executeDispensing(payload, 'user1', tenantId);
    console.log(`\nDispensing Successful!`);
    console.log(`Transaction ID: ${result.dispensing_id}`);
    console.log(`Calculated Total Amount: ₹${result.total_amount}`);
    
    if (parseFloat(result.total_amount) === 20) {
      console.log('✅ TEST PASSED: 10 tablets at (20 MRP / 10 pack_size) correctly calculated as 20 rupees!');
    } else {
      console.log('❌ TEST FAILED: Total amount is not 20 rupees.');
    }
  } catch (err) {
    console.error('Dispensing Error:', err);
  }

  process.exit(0);
}

runTest();