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// 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 criterion::Criterion;
use opendal::raw::tests::init_test_service;
use opendal::raw::tests::TEST_RUNTIME;
use opendal::Operator;
use rand::prelude::*;
use size::Size;

use super::utils::*;

pub fn bench(c: &mut Criterion) {
    if let Some(op) = init_test_service().unwrap() {
        bench_write_once(c, op.info().scheme().into_static(), op.clone());
        bench_write_with_concurrent(c, op.info().scheme().into_static(), op.clone());
    }
}

fn bench_write_once(c: &mut Criterion, name: &str, op: Operator) {
    let mut group = c.benchmark_group(format!("service_{name}_write_once"));

    let mut rng = thread_rng();

    for size in [
        Size::from_kibibytes(4),
        Size::from_kibibytes(256),
        Size::from_mebibytes(4),
        Size::from_mebibytes(16),
    ] {
        let content = gen_bytes(&mut rng, size.bytes() as usize);
        let path = uuid::Uuid::new_v4().to_string();
        let temp_data = TempData::existing(op.clone(), &path);

        group.throughput(criterion::Throughput::Bytes(size.bytes() as u64));
        group.bench_with_input(
            size.to_string(),
            &(op.clone(), &path, content.clone()),
            |b, (op, path, content)| {
                b.to_async(&*TEST_RUNTIME).iter(|| async {
                    op.write(path, content.clone()).await.unwrap();
                })
            },
        );

        std::mem::drop(temp_data);
    }

    group.finish()
}

fn bench_write_with_concurrent(c: &mut Criterion, name: &str, op: Operator) {
    let mut group = c.benchmark_group(format!("service_{name}_write_with_concurrent"));

    let mut rng = thread_rng();

    for concurrent in [1, 2, 4, 8] {
        let content = gen_bytes(&mut rng, 5 * 1024 * 1024);
        let path = uuid::Uuid::new_v4().to_string();

        group.throughput(criterion::Throughput::Bytes(16 * 5 * 1024 * 1024));
        group.bench_with_input(
            concurrent.to_string(),
            &(op.clone(), &path, content.clone()),
            |b, (op, path, content)| {
                b.to_async(&*TEST_RUNTIME).iter(|| async {
                    let mut w = op.writer_with(path).concurrent(concurrent).await.unwrap();
                    for _ in 0..16 {
                        w.write(content.clone()).await.unwrap();
                    }
                    w.close().await.unwrap();
                })
            },
        );
    }

    group.finish()
}