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/* -------------------------------------------------------------------------- *\
 *        Apache 2.0 License Copyright © 2022-2023 The Aurae Authors          *
 *                                                                            *
 *                +--------------------------------------------+              *
 *                |   █████╗ ██╗   ██╗██████╗  █████╗ ███████╗ |              *
 *                |  ██╔══██╗██║   ██║██╔══██╗██╔══██╗██╔════╝ |              *
 *                |  ███████║██║   ██║██████╔╝███████║█████╗   |              *
 *                |  ██╔══██║██║   ██║██╔══██╗██╔══██║██╔══╝   |              *
 *                |  ██║  ██║╚██████╔╝██║  ██║██║  ██║███████╗ |              *
 *                |  ╚═╝  ╚═╝ ╚═════╝ ╚═╝  ╚═╝╚═╝  ╚═╝╚══════╝ |              *
 *                +--------------------------------------------+              *
 *                                                                            *
 *                         Distributed Systems Runtime                        *
 *                                                                            *
 * -------------------------------------------------------------------------- *
 *                                                                            *
 *   Licensed under the Apache License, Version 2.0 (the "License");          *
 *   you may not use this file except in compliance with the License.         *
 *   You may obtain a copy of the License at                                  *
 *                                                                            *
 *       http://www.apache.org/licenses/LICENSE-2.0                           *
 *                                                                            *
 *   Unless required by applicable law or agreed to in writing, software      *
 *   distributed under the License is distributed on an "AS IS" BASIS,        *
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
 *   See the License for the specific language governing permissions and      *
 *   limitations under the License.                                           *
 *                                                                            *
\* -------------------------------------------------------------------------- */

use proto::observe::LogChannelType;
use thiserror::Error;
use tonic::Status;
use tracing::error;

#[derive(Debug, Error)]
pub enum ObserveServiceError {
    #[error("Channel already registered with type {channel_type:?} for {pid}")]
    ChannelAlreadyRegistered { pid: i32, channel_type: LogChannelType },
    #[error("Failed to find any registered channels for {pid}")]
    NoChannelsForPid { pid: i32 },
    #[error("Failed to find channel type {channel_type:?} for {pid}")]
    ChannelNotRegistered { pid: i32, channel_type: LogChannelType },
    #[error("{channel_type} is not a valid LogChannelType")]
    InvalidLogChannelType { channel_type: i32 },
}

impl From<ObserveServiceError> for Status {
    fn from(err: ObserveServiceError) -> Self {
        let msg = err.to_string();
        error!("{msg}");
        match err {
            ObserveServiceError::ChannelAlreadyRegistered { .. } => {
                Status::internal(msg)
            }
            ObserveServiceError::NoChannelsForPid { .. }
            | ObserveServiceError::ChannelNotRegistered { .. } => {
                Status::not_found(msg)
            }
            ObserveServiceError::InvalidLogChannelType { .. } => {
                Status::invalid_argument(msg)
            }
        }
    }
}