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use std::convert::Infallible;
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use std::fmt::Display;
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use std::str::Utf8Error;
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use std::string::FromUtf8Error;
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use std::sync::Arc;
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use bonsaidb_core::permissions::PermissionDenied;
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use bonsaidb_core::pubsub::{Disconnected, TryReceiveError};
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use bonsaidb_core::schema::{view, InsertError, InvalidNameError};
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use bonsaidb_core::AnyError;
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use nebari::AbortError;
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use crate::database::compat::UnknownVersion;
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/// Errors that can occur from interacting with storage.
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#[derive(thiserror::Error, Debug)]
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pub enum Error {
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    /// An error occurred interacting with the storage layer, `nebari`.
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    #[error("error from storage: {0}")]
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    Nebari(#[from] nebari::Error),
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    /// An error occurred serializing the contents of a `Document` or results of a `View`.
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    #[error("error while serializing: {0}")]
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    Serialization(#[from] pot::Error),
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    /// An internal error occurred while waiting for or sending a message.
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    #[error("error while communicating internally")]
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    InternalCommunication,
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    /// A transaction was too large to execute.
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    #[error("transaction is too large")]
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    TransactionTooLarge,
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    /// An error occurred while executing a view
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    #[error("error from view: {0}")]
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    View(#[from] view::Error),
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    /// An error occurred in the secrets storage layer.
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    #[error("a vault error occurred: {0}")]
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    #[cfg(feature = "encryption")]
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    Vault(#[from] crate::vault::Error),
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    /// An error occurred decompressing a stored value.
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    #[error("a vault error occurred: {0}")]
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    #[cfg(feature = "compression")]
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    Compression(#[from] lz4_flex::block::DecompressError),
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    /// A collection requested to be encrypted, but encryption is disabled.
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    #[error("encryption is disabled, but a collection is requesting encryption")]
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    #[cfg(not(feature = "encryption"))]
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    EncryptionDisabled,
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    /// An core error occurred.
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    #[error("a core error occurred: {0}")]
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    Core(#[from] bonsaidb_core::Error),
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    /// A tokio task failed to execute.
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    #[cfg(feature = "async")]
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    #[error("a concurrency error ocurred: {0}")]
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    TaskJoin(#[from] tokio::task::JoinError),
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    /// An io error occurred.
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    #[error("an IO error occurred: {0}")]
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    Io(#[from] std::io::Error),
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    /// An error occurred from a job and couldn't be unwrapped due to clones.
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    #[error("an error from a job occurred: {0}")]
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    Job(Arc<Error>),
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    /// An error occurred from backing up or restoring.
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    #[error("a backup error: {0}")]
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    Backup(Box<dyn AnyError>),
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    /// An error occurred with a password hash.
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    #[cfg(all(feature = "password-hashing", feature = "cli"))]
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    #[error("error reading password: {0}")]
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    CommandLinePassword(#[from] crate::cli::ReadPasswordError),
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}
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impl Error {
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    pub(crate) fn other(origin: impl Display, error: impl Display) -> Self {
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        Self::Core(bonsaidb_core::Error::other(origin, error))
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    }
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}
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impl<T> From<InsertError<T>> for Error {
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    fn from(err: InsertError<T>) -> Self {
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        Self::Core(err.error)
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    }
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}
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impl From<flume::RecvError> for Error {
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    fn from(_: flume::RecvError) -> Self {
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        Self::InternalCommunication
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    }
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}
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impl From<TryReceiveError> for Error {
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    fn from(_: TryReceiveError) -> Self {
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        Self::InternalCommunication
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    }
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}
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impl From<Disconnected> for Error {
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    fn from(_: Disconnected) -> Self {
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        Self::InternalCommunication
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    }
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}
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impl From<bincode::Error> for Error {
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    fn from(err: bincode::Error) -> Self {
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        Self::other("bincode", err)
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    }
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}
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impl<T> From<UnknownVersion<T>> for Error {
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    fn from(err: UnknownVersion<T>) -> Self {
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        Self::other("unknown versiion", err)
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    }
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}
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#[cfg(feature = "password-hashing")]
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impl From<argon2::Error> for Error {
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    fn from(err: argon2::Error) -> Self {
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        Self::other("argon2", err)
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    }
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}
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#[cfg(feature = "password-hashing")]
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impl From<argon2::password_hash::Error> for Error {
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    fn from(err: argon2::password_hash::Error) -> Self {
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        Self::other("argon2", err)
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    }
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}
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#[cfg(feature = "async")]
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impl From<tokio::sync::oneshot::error::RecvError> for Error {
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    fn from(_: tokio::sync::oneshot::error::RecvError) -> Self {
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        Self::InternalCommunication
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    }
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}
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#[cfg(feature = "async")]
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impl From<tokio::sync::oneshot::error::TryRecvError> for Error {
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    fn from(_: tokio::sync::oneshot::error::TryRecvError) -> Self {
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        Self::InternalCommunication
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    }
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}
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impl From<Error> for bonsaidb_core::Error {
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    fn from(err: Error) -> Self {
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        match err {
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            Error::View(view::Error::Core(core)) | Error::Core(core) => core,
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            other => Self::other("bonsaidb-local", other),
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        }
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    }
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}
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impl From<Arc<Error>> for Error {
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    fn from(err: Arc<Error>) -> Self {
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        match Arc::try_unwrap(err) {
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            Ok(err) => err,
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            Err(still_wrapped) => Error::Job(still_wrapped),
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        }
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    }
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}
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impl From<FromUtf8Error> for Error {
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    fn from(err: FromUtf8Error) -> Self {
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        Self::Core(bonsaidb_core::Error::InvalidUnicode(err.to_string()))
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    }
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}
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impl From<Utf8Error> for Error {
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    fn from(err: Utf8Error) -> Self {
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        Self::Core(bonsaidb_core::Error::InvalidUnicode(err.to_string()))
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    }
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}
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impl From<InvalidNameError> for Error {
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    fn from(err: InvalidNameError) -> Self {
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        Self::Core(bonsaidb_core::Error::from(err))
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    }
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}
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impl From<AbortError<Infallible>> for Error {
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    fn from(err: AbortError<Infallible>) -> Self {
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        match err {
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            AbortError::Nebari(error) => Self::Nebari(error),
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            AbortError::Other(_) => unreachable!(),
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        }
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    }
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}
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impl From<AbortError<Error>> for Error {
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    fn from(err: AbortError<Error>) -> Self {
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        match err {
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            AbortError::Nebari(error) => Self::Nebari(error),
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            AbortError::Other(error) => error,
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        }
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    }
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}
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impl From<PermissionDenied> for Error {
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    fn from(err: PermissionDenied) -> Self {
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        Self::Core(bonsaidb_core::Error::from(err))
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    }
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}
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#[test]
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fn test_converting_error() {
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    use serde::ser::Error as _;
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    let err: bonsaidb_core::Error = Error::Serialization(pot::Error::custom("mymessage")).into();
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    match err {
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        bonsaidb_core::Error::Other { error, .. } => {
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            assert!(error.contains("mymessage"));
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        }
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        _ => unreachable!(),
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    }
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}