// 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 arrow::array::UInt32Builder;
use arrow::compute::take;
use arrow::datatypes::{Int32Type, Int64Type};
use arrow::util::bench_util::*;
use arrow::util::test_util::seedable_rng;
use arrow_array::UInt32Array;
use criterion::{Criterion, criterion_group, criterion_main};
use rand::Rng;
use std::hint;

fn create_random_index(size: usize, null_density: f32, max_value: usize) -> UInt32Array {
    let mut rng = seedable_rng();
    let mut builder = UInt32Builder::with_capacity(size);
    for _ in 0..size {
        if rng.random::<f32>() < null_density {
            builder.append_null();
        } else {
            let value = rng.random_range::<u32, _>(0u32..max_value as u32);
            builder.append_value(value);
        }
    }
    builder.finish()
}

fn criterion_benchmark(c: &mut Criterion) {
    let mut group = c.benchmark_group("primitive_run_take");

    let mut do_bench = |physical_array_len: usize, logical_array_len: usize, take_len: usize| {
        let run_array = create_primitive_run_array::<Int32Type, Int64Type>(
            logical_array_len,
            physical_array_len,
        );
        let indices = create_random_index(take_len, 0.0, logical_array_len);
        group.bench_function(
            format!(
                "(run_array_len:{logical_array_len}, physical_array_len:{physical_array_len}, take_len:{take_len})"),
            |b| {
                b.iter(|| {
                    hint::black_box(take(&run_array, &indices, None).unwrap());
                })
            },
        );
    };

    do_bench(64, 512, 512);
    do_bench(128, 512, 512);

    do_bench(256, 1024, 512);
    do_bench(256, 1024, 1024);

    do_bench(512, 2048, 512);
    do_bench(512, 2048, 1024);

    do_bench(1024, 4096, 512);
    do_bench(1024, 4096, 1024);

    group.finish();
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);