#!/usr/bin/env python3
"""
Test Correct GoldSim Sequence (Starting with Period 1)
Validates the reset logic for the proper GoldSim sequence
"""

import sys
import os
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

# Simulate fresh Python module load
import importlib
import gspy_interface
importlib.reload(gspy_interface)

from gspy_interface import run_modflow_step

def test_correct_goldsim_sequence():
    """Test the correct GoldSim sequence starting with Period 1"""
    
    print("=" * 80)
    print("CORRECT GOLDSIM SEQUENCE TEST")
    print("Testing GoldSim starting with Period 1 (your actual configuration)")
    print("=" * 80)
    
    # Simulate your actual GoldSim sequence
    print("\n--- Your GoldSim Sequence ---")
    
    # Day 1: Period 1 (should reset and start with 10.0m)
    print("\nDay 1 - Period 1:")
    head1 = run_modflow_step(1, 0.0, 10.0, 0.3)[0]
    print(f"  Result: {head1:.6f} m")
    
    # Day 2: Period 2 (should use state from Day 1)
    print("\nDay 2 - Period 2:")
    head2 = run_modflow_step(2, 0.0, 10.0, 0.3)[0]
    print(f"  Result: {head2:.6f} m")
    print(f"  Change: {head2 - head1:+.6f} m")
    
    # Day 3: Period 2 (should continue with state)
    print("\nDay 3 - Period 2:")
    head3 = run_modflow_step(2, 0.0, 10.0, 0.3)[0]
    print(f"  Result: {head3:.6f} m")
    print(f"  Change: {head3 - head2:+.6f} m")
    
    print("\n--- Analysis ---")
    
    # Check Day 1 reset
    if abs(head1 - 10.0) < 0.01:
        print("✅ DAY 1: Perfect! Started with Tutorial 2 initial conditions (10.0m)")
    else:
        print(f"❌ DAY 1: Issue - Expected 10.0m, got {head1:.6f}m")
    
    # Check state persistence
    if head1 != head2 and head2 != head3:
        print("✅ STATE PERSISTENCE: Working correctly - heads changing between days")
    else:
        print("❌ STATE PERSISTENCE: Issue - heads not changing properly")
    
    # Check realistic values
    if 9.0 < head2 < 11.0 and 9.0 < head3 < 11.0:
        print("✅ HEAD VALUES: Realistic groundwater heads")
    else:
        print("❌ HEAD VALUES: Unrealistic values detected")
    
    print(f"\nExpected GoldSim Behavior:")
    print(f"  Day 1 (Period 1): Start fresh at 10.0m")
    print(f"  Day 2 (Period 2): Show boundary condition response")  
    print(f"  Day 3+ (Period 2): Continue with transient behavior")
    
    print(f"\nActual Results:")
    print(f"  Day 1: {head1:.6f} m")
    print(f"  Day 2: {head2:.6f} m")
    print(f"  Day 3: {head3:.6f} m")
    
    # Overall assessment
    success = (abs(head1 - 10.0) < 0.01 and head1 != head2 and head2 != head3)
    
    if success:
        print("\n🎯 SUCCESS: Your GoldSim integration is ready!")
        print("   - Proper initial conditions")
        print("   - State persistence working")
        print("   - Tutorial 2 compliance verified")
    else:
        print("\n⚠️  NEEDS REVIEW: Check the issues above")
    
    print("\n" + "=" * 80)
    print("GOLDSIM SEQUENCE TEST COMPLETE")
    print("=" * 80)

if __name__ == "__main__":
    test_correct_goldsim_sequence()