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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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 std::fmt::Debug;
use std::fmt::Formatter;

use serde::Deserialize;
use serde::Serialize;

/// Config for backblaze b2 services support.
#[derive(Default, Serialize, Deserialize, Clone, PartialEq, Eq)]
#[serde(default)]
#[non_exhaustive]
pub struct B2Config {
    /// root of this backend.
    ///
    /// All operations will happen under this root.
    pub root: Option<String>,
    /// keyID of this backend.
    ///
    /// - If application_key_id is set, we will take user's input first.
    /// - If not, we will try to load it from environment.
    pub application_key_id: Option<String>,
    /// applicationKey of this backend.
    ///
    /// - If application_key is set, we will take user's input first.
    /// - If not, we will try to load it from environment.
    pub application_key: Option<String>,
    /// bucket of this backend.
    ///
    /// required.
    pub bucket: String,
    /// bucket id of this backend.
    ///
    /// required.
    pub bucket_id: String,
}

impl Debug for B2Config {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        let mut d = f.debug_struct("B2Config");

        d.field("root", &self.root)
            .field("application_key_id", &self.application_key_id)
            .field("bucket_id", &self.bucket_id)
            .field("bucket", &self.bucket);

        d.finish_non_exhaustive()
    }
}