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// Copyright 2021 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under The General Public License (GPL), version 3.
// Unless required by applicable law or agreed to in writing, the SAFE Network Software distributed
// under the GPL Licence is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. Please review the Licences for the specific language governing
// permissions and limitations relating to use of the SAFE Network Software.

pub use crate::routing::core::AggregatorError;
pub use crate::routing::dkg::proposal::ProposalError;
use qp2p::Error as Qp2pError;
use secured_linked_list::error::Error as SecuredLinkedListError;
use std::net::SocketAddr;
use thiserror::Error;
use xor_name::XorName;

/// The type returned by the sn_routing message handling methods.
pub type Result<T, E = Error> = std::result::Result<T, E>;

/// Internal error.
#[derive(Debug, Error)]
#[allow(missing_docs)]
pub enum Error {
    #[error("Failed signature check.")]
    FailedSignature,
    #[error("Cannot route.")]
    CannotRoute,
    #[error("Empty recipient list")]
    EmptyRecipientList,
    #[error("The config is invalid: {err}")]
    InvalidConfig {
        #[source]
        err: Qp2pError,
    },
    #[error("Cannot connect to the endpoint: {err}")]
    CannotConnectEndpoint {
        #[source]
        err: Qp2pError,
    },
    #[error("Address not reachable: {err}")]
    AddressNotReachable {
        #[source]
        err: Qp2pError,
    },
    #[error("The node is not in a state to handle the action.")]
    InvalidState,
    #[error("Invalid source location.")]
    InvalidSrcLocation,
    #[error("Invalid destination location.")]
    InvalidDstLocation,
    #[error("Content of a received message is inconsistent.")]
    InvalidMessage,
    #[error("A signature share is invalid.")]
    InvalidSignatureShare,
    #[error("The secret key share is missing.")]
    MissingSecretKeyShare,
    #[error("Failed to send a message to {0}, {1}")]
    FailedSend(SocketAddr, XorName),
    #[error("Connection closed locally")]
    ConnectionClosed,
    #[error("Invalid section chain: {0}")]
    InvalidSectionChain(#[from] SecuredLinkedListError),
    #[error("Messaging protocol error: {0}")]
    Messaging(#[from] crate::messaging::Error),
    #[error("proposal error: {0}")]
    ProposalError(#[from] ProposalError),
    #[error("invalid payload")]
    InvalidPayload,
    #[error("Routing is set to not allow taking any new node")]
    TryJoinLater,
    #[error("No matching Section")]
    NoMatchingSection,
    #[error("No matching Elder")]
    NoMatchingElder,
    #[error("Node cannot join the network since it is not externally reachable: {0}")]
    NodeNotReachable(SocketAddr),
}