#!/usr/bin/env python3
"""
Check FK constraints for comenzi table
"""

import oracledb
import os
from dotenv import load_dotenv

load_dotenv('.env')

user = os.environ['ORACLE_USER']
password = os.environ['ORACLE_PASSWORD']
dsn = os.environ['ORACLE_DSN']

try:
    instantclient_path = os.environ.get('INSTANTCLIENTPATH', '/opt/oracle/instantclient_23_9')
    oracledb.init_oracle_client(lib_dir=instantclient_path)
except Exception as e:
    pass

def check_constraints():
    """Check FK constraints for comenzi table"""
    print("🔍 Checking FK constraints...")
    
    try:
        with oracledb.connect(user=user, password=password, dsn=dsn) as conn:
            with conn.cursor() as cur:
                
                # Check FK_COMENZI_002 constraint
                cur.execute("""
                    SELECT 
                        constraint_name,
                        table_name,
                        r_constraint_name,
                        delete_rule,
                        status
                    FROM user_constraints 
                    WHERE constraint_name = 'FK_COMENZI_002'
                """)
                
                constraint = cur.fetchone()
                if constraint:
                    print(f"FK_COMENZI_002 found:")
                    print(f"  Table: {constraint[1]}")
                    print(f"  References: {constraint[2]}")
                    print(f"  Status: {constraint[4]}")
                    
                    # Get referenced table
                    cur.execute("""
                        SELECT table_name 
                        FROM user_constraints 
                        WHERE constraint_name = ?
                    """, [constraint[2]])
                    
                    ref_table = cur.fetchone()
                    if ref_table:
                        print(f"  Referenced table: {ref_table[0]}")
                else:
                    print("❌ FK_COMENZI_002 not found")
                
                # Check all FK constraints for comenzi
                cur.execute("""
                    SELECT 
                        constraint_name,
                        column_name
                    FROM user_cons_columns 
                    WHERE table_name = 'COMENZI'
                      AND constraint_name LIKE 'FK_%'
                    ORDER BY constraint_name, position
                """)
                
                fk_columns = cur.fetchall()
                if fk_columns:
                    print(f"\nAll FK constraints for COMENZI:")
                    for fk in fk_columns:
                        print(f"  {fk[0]}: {fk[1]}")

    except Exception as e:
        print(f"❌ Check failed: {e}")

def test_simple_insert():
    """Test simple insert to see what breaks"""
    print("\n🧪 Testing simple insert...")
    
    try:
        with oracledb.connect(user=user, password=password, dsn=dsn) as conn:
            with conn.cursor() as cur:
                
                # Test minimal insert
                try:
                    cur.execute("""
                        INSERT INTO comenzi (
                            id_comanda,
                            numar,
                            data_comanda,
                            id_partener,
                            interna
                        ) VALUES (
                            -999999,
                            'TEST-MINIMAL',
                            SYSDATE,
                            -1,
                            2
                        )
                    """)
                    
                    print("✅ Minimal insert succeeded")
                    cur.execute("DELETE FROM comenzi WHERE id_comanda = -999999")
                    
                except Exception as e:
                    print(f"❌ Minimal insert failed: {e}")

    except Exception as e:
        print(f"❌ Test failed: {e}")

def main():
    print("🔍 FK Constraints Analysis")
    print("=" * 40)
    
    check_constraints()
    test_simple_insert()

if __name__ == "__main__":
    main()