/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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 <optional>
#include <string>

class ServiceDescriptor {
  public:
    ServiceDescriptor(std::string name, std::string cmd);

    const char* name() const { return mName.c_str(); }
    const char* command() const { return mCommandLine.c_str(); }

    bool IsAvailable() const {
        // TODO(egranata): how to validate this?
        return true;
    }

    struct OutputConsumer {
        virtual void Write(char* ptr, size_t len) = 0;
    };

    using Error = std::optional<std::string>;
    // std::nullopt for success; an error descriptor otherwise
    Error GetOutput(OutputConsumer* consumer) const;

  private:
    std::string mName;
    std::string mCommandLine;
};