// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef PERIDOT_LIB_MODULE_MANIFEST_SOURCE_MODULE_PACKAGE_SOURCE_H_
#define PERIDOT_LIB_MODULE_MANIFEST_SOURCE_MODULE_PACKAGE_SOURCE_H_

#include <functional>
#include <map>
#include <string>
#include <vector>

#include <fuchsia/cpp/module_manifest_source.h>
#include "garnet/public/lib/app/cpp/application_context.h"
#include "garnet/public/lib/fxl/memory/weak_ptr.h"
#include "peridot/lib/module_manifest_source/module_manifest_source.h"

namespace modular {

// This source exposes a |ModuleManifestIndexer| service to this application's
// debug service. New manifests are published using that interfaces. When this
// source starts up, it gets its initial set of module packages to index by
// reading the module package index directory located under /system/data/.
class ModulePackageSource : public ModuleManifestSource,
                            module_manifest_source::ModulePackageIndexer {
 public:
  ModulePackageSource(component::ApplicationContext* context);
  ~ModulePackageSource() override;

  // |ModuleManifestSource|
  void Watch(async_t* async,
             IdleFn idle_fn,
             NewEntryFn new_fn,
             RemovedEntryFn removed_fn) override;

 private:
  // |ModulePackageIndexer|
  void IndexManifest(fidl::StringPtr package_name,
                     fidl::StringPtr module_manifest_path) override;

  const std::string dir_;
  NewEntryFn new_entry_fn_;
  fidl::BindingSet<module_manifest_source::ModulePackageIndexer>
      indexer_bindings_;
  async_t* async_;

  fxl::WeakPtrFactory<ModulePackageSource> weak_factory_;

  FXL_DISALLOW_COPY_AND_ASSIGN(ModulePackageSource);
};

}  // namespace modular

#endif  // PERIDOT_LIB_MODULE_MANIFEST_SOURCE_MODULE_PACKAGE_SOURCE_H_