import os
import sys
import paramiko
import dotenv
import time

sys.stdout.reconfigure(encoding='utf-8')
sys.stderr.reconfigure(encoding='utf-8')

repo_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
dotenv.load_dotenv(dotenv_path=os.path.join(repo_root, ".env"))

host = os.environ.get('SERVER_HOST')
user = os.environ.get('SERVER_USER')
password = os.environ.get('SERVER_PASS')
if password == "your_db_password_here" or not password:
    password = None

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

try:
    ssh.connect(host, username=user, password=password, timeout=10)
    print("SSH Connected!")
    
    # 1. Stop app container to release all locks
    print("Stopping app container...")
    stdin, stdout, stderr = ssh.exec_command("cd food_project && docker-compose stop app")
    stdout.read()
    
    # 2. Restart MySQL to drop any blocked index creation queries
    print("Restarting MySQL...")
    stdin, stdout, stderr = ssh.exec_command("cd food_project && docker-compose restart mysql")
    stdout.read()
    
    print("Waiting 10 seconds for MySQL to be healthy...")
    time.sleep(10)
    
    # 3. Create full-text indexes
    queries = [
        "ALTER TABLE food_db.products_core ADD FULLTEXT INDEX idx_prod_ing (product_name, ingredients_text);",
        "ALTER TABLE food_db.products_core ADD FULLTEXT INDEX idx_prod_name (product_name);",
        "ALTER TABLE food_db.products_core ADD FULLTEXT INDEX idx_ing_text (ingredients_text);"
    ]
    
    db_pass = os.environ.get('MYSQL_ROOT_PASSWORD') or 'your_mysql_root_pass'
    for q in queries:
        print(f"Executing: {q}")
        cmd = f"docker exec food_project-mysql-1 mysql -uroot -p{db_pass} -e '{q}'"
        stdin, stdout, stderr = ssh.exec_command(cmd)
        print("STDOUT:\n", stdout.read().decode('utf-8'))
        print("STDERR:\n", stderr.read().decode('utf-8'))
        
    # 4. Start app container back up
    print("Starting app container...")
    stdin, stdout, stderr = ssh.exec_command("cd food_project && docker-compose start app")
    stdout.read()
    
    print("Index creation completed successfully!")
    
except Exception as e:
    print(f"Error: {e}")
finally:
    ssh.close()