• For now, we can only dispute deposit transaction. Technically it's okay to dipsute both deposit and withdrawl transaction but the guidline description seemed to be only for deposit transactoin. Hence I choose to dispute only deposit transaction to be clear and minimum
• New transaction is added and marked as normal status
• Disputing any transaction other than normal status is an error
• After resolving a disputed transaction, it became normal status and we can dispute it again later
• After charging back a disputed transaction, any further transaction will be skipped and then pop an error
• Using f64 for amount type but it migh have overflow and round problem. In reality, we should use string to be safe
• When printing out to stdout, we use format macro to get a precision up to 4 places past to decimal

Running result will output to stdout

cargo run -- YOUR_CSV_FILE

#[derive(Error, Debug)]
pub enum PaymentError {
    #[error("Duplicate transaction id, {0:?}")]
    DuplicateTransaction(Transaction),

    #[error("Insuffiecient balance, tx = {0:?}, availabe = {1}")]
    InsuffiecientBalance(Transaction, Amount),

    #[error("No such transaction id, txn = {0:?}")]
    NoSuchTransactionID(Transaction),

    #[error("Invalid disputed status, txn = {0:?}, current status = {1:?}")]
    InvalidDisputeStatus(Transaction, DisputeStatus),

    #[error("Account is locked after tx = {1}, txn={0:?}")]
    Locked(Transaction, TransactionID), //

    #[error("Unknown error")]
    Unknown(Transaction, Option<TransactionInner>),
}