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// ┃ ██████ ██████ ██████       █      █      █      █      █ █▄  ▀███ █       ┃
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// ┃ Copyright (c) 2017, the Perspective Authors.                              ┃
// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
// ┃ This file is part of the Perspective library, distributed under the terms ┃
// ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
// ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

//! Utility functions that are common to the Perspective crates.

mod clone;
mod logging;

#[cfg(test)]
mod tests;

use thiserror::*;

use crate::proto;

#[derive(Error, Debug)]
pub enum ClientError {
    #[error("View not found")]
    ViewNotFound,

    #[error("Abort(): {0}")]
    Internal(String),

    #[error("Client not yet initialized")]
    NotInitialized,

    #[error("Unknown error: {0}")]
    Unknown(String),

    #[error("Unwrapped option")]
    Option,

    #[error("Unexpected response {0:?}")]
    OptionResponseFailed(Box<Option<proto::response::ClientResp>>),

    #[error("Bad string")]
    Utf8(#[from] std::str::Utf8Error),

    #[error("Undecipherable server message {0:?}")]
    DecodeError(#[from] prost::DecodeError),

    #[error("Unexpected response {0:?}")]
    ResponseFailed(Box<proto::response::ClientResp>),

    #[error("Not yet implemented {0:?}")]
    NotImplemented(&'static str),

    #[error("Can't use both `limit` and `index` arguments")]
    BadTableOptions,

    #[error("External error: {0:?}")]
    ExternalError(#[from] Box<dyn std::error::Error + Send + Sync>),

    #[error("Undecipherable proto message")]
    ProtoError(#[from] prost::EncodeError),
}

pub type ClientResult<T> = Result<T, ClientError>;

impl From<proto::response::ClientResp> for ClientError {
    fn from(value: proto::response::ClientResp) -> Self {
        match value {
            proto::response::ClientResp::ServerError(x) => match x.status_code() {
                proto::StatusCode::ServerError => ClientError::Internal(x.message),
                proto::StatusCode::ViewNotFound => ClientError::ViewNotFound,
            },
            x => ClientError::ResponseFailed(Box::new(x)),
        }
    }
}
