// Copyright 2021 - Nym Technologies SA <contact@nymtech.net>
// SPDX-License-Identifier: Apache-2.0

use crate::node_status_api::models::ValidatorApiStorageError;
use thiserror::Error;
use validator_client::nymd::error::NymdError;
use validator_client::ValidatorClientError;

#[derive(Debug, Error)]
pub(crate) enum RewardingError {
    #[error("Could not distribute rewards as the contract address was unspecified")]
    UnspecifiedContractAddress,

    #[error("There were no mixnodes to reward (network is dead)")]
    NoMixnodesToReward,

    #[error("Failed to execute the smart contract - {0}")]
    ContractExecutionFailure(NymdError),

    // The inner error should be modified at some point...
    #[error("We run into storage issues - {0}")]
    StorageError(ValidatorApiStorageError),

    #[error("Failed to query the smart contract - {0}")]
    ValidatorClientError(ValidatorClientError),

    #[error("Error downcasting u128 -> u64")]
    DowncastingError {
        #[from]
        source: std::num::TryFromIntError,
    },
}

impl From<NymdError> for RewardingError {
    fn from(err: NymdError) -> Self {
        RewardingError::ContractExecutionFailure(err)
    }
}

impl From<ValidatorApiStorageError> for RewardingError {
    fn from(err: ValidatorApiStorageError) -> Self {
        RewardingError::StorageError(err)
    }
}

impl From<ValidatorClientError> for RewardingError {
    fn from(err: ValidatorClientError) -> Self {
        RewardingError::ValidatorClientError(err)
    }
}

impl RewardingError {
    pub fn is_tendermint_duplicate(&self) -> bool {
        match &self {
            RewardingError::ValidatorClientError(ValidatorClientError::NymdError(nymd_err)) => {
                nymd_err.is_tendermint_response_duplicate()
            }
            _ => false,
        }
    }
}