#!/usr/bin/env python3
"""
Enhanced Diagnostic Test
Tests the first 2 time steps with comprehensive logging to diagnose Tutorial 2 discrepancies
"""

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
import time

def test_first_two_steps_diagnostic():
    """Test first 2 time steps with enhanced diagnostic logging"""
    
    print("=" * 80)
    print("ENHANCED DIAGNOSTIC TEST - TUTORIAL 2 VERIFICATION")
    print("Comprehensive logging for first 2 GoldSim time steps")
    print("=" * 80)
    
    # Wait to ensure clean start
    time.sleep(12)
    
    print("\n🔍 STEP 1: Period 1 Call (Day 1)")
    print("-" * 50)
    head1 = run_modflow_step(1, 0.0, 10.0, 0.3)[0]
    print(f"RESULT: {head1:.6f} m")
    
    print("\n🔍 STEP 2: Period 2 Call (Day 2)")  
    print("-" * 50)
    head2 = run_modflow_step(2, 0.0, 10.0, 0.3)[0]
    print(f"RESULT: {head2:.6f} m")
    
    print("\n📊 SUMMARY ANALYSIS")
    print("-" * 50)
    print(f"Day 1 (Period 1): {head1:.6f} m")
    print(f"Day 2 (Period 2): {head2:.6f} m")
    print(f"Change: {head2 - head1:+.6f} m")
    
    # Expected Tutorial 2 behavior analysis
    print(f"\n📋 TUTORIAL 2 EXPECTATIONS:")
    print(f"Day 1: Should be ~10.0m (uniform initial conditions)")
    print(f"Day 2: Should show response to boundary change (Left=10m, Right=0m)")
    print(f"Expected change: Significant drop due to gradient establishment")
    
    # Diagnostic assessment
    if abs(head1 - 10.0) < 0.01:
        print("✅ Day 1: CORRECT - Proper initial conditions")
    else:
        print(f"❌ Day 1: ISSUE - Expected 10.0m, got {head1:.6f}m")
    
    change_magnitude = abs(head2 - head1)
    if change_magnitude > 0.1:
        print("✅ Day 2: REASONABLE - Significant response to boundary change")
    else:
        print(f"❌ Day 2: CONCERN - Small change ({change_magnitude:.6f}m) may indicate issue")
    
    print(f"\n🎯 Check the detailed logs above for:")
    print("- Initial head distribution analysis")
    print("- Boundary condition verification") 
    print("- Head file contents")
    print("- Center cell neighborhood analysis")
    print("- Parameter validation")
    
    print("\n" + "=" * 80)
    print("ENHANCED DIAGNOSTIC TEST COMPLETE")
    print("Review the detailed diagnostic logs to identify Tutorial 2 discrepancies")
    print("=" * 80)

if __name__ == "__main__":
    test_first_two_steps_diagnostic()