import mysql.connector as database
    
print("Willkommen bei Gremlin_Python!")

connection = database.connect(
    host="woitschetzki.de",
    port="3306",
    user="sascha",
    password="mgltoJtmmDnKJ86LltsGdw",
    database="regulus")

cursor = connection.cursor()

def readContactFromDb(lastName):
    try:
        statement = "SELECT ContactId, AccountId, FirstName, LastName, Gender, Email FROM Contacts WHERE LastName LIKE %s"
        data = (lastName,)
        cursor.execute(statement, data)
        rows = list(cursor)

        print(f"Found {len(rows)} contacts with {lastName} in LastName:")
        print("ContactId | AccountID | FirstName | LastName | Gender | Email")

        for (contactId, AccountId, firstName, lastName, gender, email) in rows:
            print(
                f"{contactId} | {AccountId} | {firstName} | {lastName} | {gender} | {email}")

    except database.Error as error:
        print(f"Error retrieving entry from database: {error}")

def writeContactToDb(accountId, firstName, lastName, gender, email):
    try:
        statement = "INSERT INTO Contacts (accountId, firstName, lastName, gender, email) VALUES (%s, %s, %s, %s, %s)"
        data = (accountId, firstName, lastName, gender, email)
        cursor.execute(statement, data)
        connection.commit()
        print(f"Successfully added {firstName} {lastName} to database.")
    except database.Error as error:
        print(f"Error adding entry to database: {error}")    

def createNewContact():
    print("AccountID?")
    accountId = input()

    print("FirstName?")
    firstName = input()

    print("LastName?")
    lastName = input()

    print("Gender?")
    gender = input()

    print("Email?")
    email = input()

    writeContactToDb(accountId, firstName, lastName, gender, email)

def main():
    while 2 > 1:
        print("Nach welchem Nachnamen suchen Sie?:")
        contactSearch = input()
        readContactFromDb(f"%{contactSearch}%")

        print("Neuen Kontakt hinzufügen? (j/N):")
        wantNewContact = input()
        if wantNewContact == "j":
            createNewContact()

main()

connection.close()