#!/usr/bin/env python3
"""
Test High Conductance Fix for Boundary Issues
============================================
Tests the increased GHB conductance (1,000,000 m²/day) to ensure
boundaries reach their target heads within 1 day.
"""

from gspy_interface import run_modflow_step

def test_high_conductance_fix():
    """Test that high conductance fixes boundary head issues"""
    
    print("="*80)
    print("HIGH CONDUCTANCE BOUNDARY FIX TEST")
    print("Testing GHB conductance = 1,000,000 m²/day")
    print("="*80)
    
    # Test Period 2 with high conductance
    print("\n🔬 Testing Period 2: Left=10.0m, Right=0.0m")
    print("Expected: Right boundary should reach exactly 0.0m")
    print("Expected: Center cell should drop below 10.0m")
    
    # Run Period 2 test (positional arguments)
    result = run_modflow_step(
        2,      # tutorial_period
        0.0,    # well_rate_m3_per_day  
        10.0,   # hydraulic_conductivity
        0.3     # specific_yield
    )
    
    print(f"\n📊 RESULTS:")
    center_head = result[0] if isinstance(result, tuple) else result
    print(f"Center cell head: {center_head:.6f} m")
    
    # Expected behavior with high conductance
    expected_min = 9.0  # Should drop significantly from 10.0m
    expected_max = 9.9  # But not drop too much in 1 day
    
    if center_head < expected_max:
        if center_head >= expected_min:
            print(f"✅ SUCCESS: Center cell dropped to {center_head:.6f}m (range {expected_min}-{expected_max}m)")
            print("✅ High conductance fix is working!")
        else:
            print(f"⚠️  WARNING: Large drop to {center_head:.6f}m (below {expected_min}m)")
            print("   May indicate over-correction, but still responsive")
    else:
        print(f"❌ FAILED: Center still at {center_head:.6f}m (above {expected_max}m)")
        print("   Boundary conditions still not working properly")
    
    return center_head

if __name__ == "__main__":
    test_high_conductance_fix()