// Copyright 2023 Greptime Team
//
// 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 api::v1::ColumnSchema;
use common_error::ext::{BoxedError, ErrorExt};
use common_error::status_code::StatusCode;
use common_macro::stack_trace_debug;
use snafu::{Location, Snafu};

#[derive(Snafu)]
#[snafu(visibility(pub))]
#[stack_trace_debug]
pub enum Error {
    #[snafu(display("Mismatched schema, expected: {:?}, actual: {:?}", expected, actual))]
    MismatchedSchema {
        #[snafu(implicit)]
        location: Location,
        expected: Vec<ColumnSchema>,
        actual: Vec<ColumnSchema>,
    },

    #[snafu(display("Failed to serialize event"))]
    SerializeEvent {
        #[snafu(source)]
        error: serde_json::error::Error,
        #[snafu(implicit)]
        location: Location,
    },

    #[snafu(display("Failed to insert events"))]
    InsertEvents {
        // BoxedError is utilized here to prevent introducing a circular dependency that would arise from directly referencing `client::error::Error`.
        source: BoxedError,
        #[snafu(implicit)]
        location: Location,
    },

    #[snafu(display("Keyvalue backend error"))]
    KvBackend {
        // BoxedError is utilized here to prevent introducing a circular dependency that would arise from directly referencing `common_meta::error::Error`.
        source: BoxedError,
        #[snafu(implicit)]
        location: Location,
    },
}

pub type Result<T> = std::result::Result<T, Error>;

impl ErrorExt for Error {
    fn status_code(&self) -> StatusCode {
        match self {
            Error::MismatchedSchema { .. } | Error::SerializeEvent { .. } => {
                StatusCode::InvalidArguments
            }
            Error::InsertEvents { .. } | Error::KvBackend { .. } => StatusCode::Internal,
        }
    }

    fn as_any(&self) -> &dyn std::any::Any {
        self
    }
}
