// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
//
// 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.

#pragma once

#include <queue>
#include <mutex>
#include <condition_variable>
#include <memory>
#include <thread>
#include <atomic>

template <class T>
class QueueMock
{
public:
    QueueMock(void): q(), m(), c() {}
    ~QueueMock(void) {}

void send(std::unique_ptr<T> t)
{
    std::lock_guard<std::mutex> lock(m);
    q.push(std::move(t));
    c.notify_one();
}

std::unique_ptr<T> receive(uint32_t ms)
{
    std::unique_lock<std::mutex> lock(m);
    while(q.empty()) {
        if (c.wait_for(lock, std::chrono::milliseconds(ms)) == std::cv_status::timeout) {
            return nullptr;
        }
    }
    std::unique_ptr<T> val = std::move(q.front());
    q.pop();
    return val;
}

private:
    std::queue<std::unique_ptr<T>> q;
    mutable std::mutex m;
    std::condition_variable c;
};
