/*
 * Copyright (C) 2024 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.
 */

#ifndef SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_REGISTERED_FILE_TRACKER_H_
#define SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_REGISTERED_FILE_TRACKER_H_

#include <optional>
#include <string>
#include <vector>

#include "perfetto/base/logging.h"
#include "perfetto/base/status.h"
#include "perfetto/ext/base/flat_hash_map.h"
#include "perfetto/trace_processor/trace_blob.h"
#include "src/trace_processor/storage/trace_storage.h"
#include "src/trace_processor/tables/etm_tables_py.h"
#include "src/trace_processor/types/trace_processor_context.h"
#include "src/trace_processor/util/build_id.h"

namespace perfetto::trace_processor {

class RegisteredFileTracker {
 public:
  explicit RegisteredFileTracker(TraceProcessorContext* context)
      : context_(context) {}

  base::Status AddFile(const std::string& name, TraceBlob data);
  TraceBlob& GetContent(tables::FileTable::Id id);

  std::optional<tables::ElfFileTable::Id> FindBuildId(
      const BuildId& build_id) const {
    auto* it = files_by_build_id_.Find(build_id);
    return it ? std::make_optional(*it) : std::nullopt;
  }

 private:
  void IndexFileType(tables::FileTable::Id file_id, const TraceBlob& content);

  TraceProcessorContext* context_;
  base::FlatHashMap<BuildId, tables::ElfFileTable::Id> files_by_build_id_;

  // Indexed by `tables::FileTable::Id`
  std::vector<TraceBlob> file_content_;

  base::FlatHashMap<StringId, tables::FileTable::Id> files_by_path_;
};

}  // namespace perfetto::trace_processor

#endif  // SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_REGISTERED_FILE_TRACKER_H_