/* Copyright Statement:
 * *
 * * This software/firmware and related documentation ("MediaTek Software") are
 * * protected under relevant copyright laws. The information contained herein
 * * is confidential and proprietary to MediaTek Inc. and/or its licensors.
 * * Without the prior written permission of MediaTek inc. and/or its licensors,
 * * any reproduction, modification, use or disclosure of MediaTek Software,
 * * and information contained herein, in whole or in part, shall be strictly prohibited.
 * *
 * * MediaTek Inc. (C) 2016. All rights reserved.
 * *
 * * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
 * * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
 * * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
 * * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
 * * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
 * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
 * * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
 * * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
 * * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
 * * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
 * * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
 * * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
 * * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
 * * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
 * * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
 * * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
 * * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
 * * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
 * *
 * * The following software/firmware and/or related documentation ("MediaTek Software")
 * * have been modified by MediaTek Inc. All revisions are subject to any receiver's
 * * applicable license agreements with MediaTek Inc.
 * */

#pragma once

#if defined(MTK_STACK_CONFIG_LOG) && (MTK_STACK_CONFIG_LOG == TRUE)

#include <stdint.h>

#include <deque>
#include <mutex>
#include <string>
#include <vector>

#include <base/files/file_path.h>

namespace vendor {
namespace mediatek {
namespace bt {
namespace stack {

constexpr char kDefaultBtsnoopPath[] = "/data/misc/bluetooth/logs";

class LogFileTreeManager {
  public:
   explicit LogFileTreeManager(const std::string& log_base_dir,
       const std::string& log_file_prefix,
       const std::string& log_file_suffix,
       const std::string& log_file_current_suffix);
   ~LogFileTreeManager();

   void set_current_logging_dir(const base::FilePath& dir) {
     current_logging_dir_ = dir;
   }

   void set_current_logging_file(const std::string &file) {
     current_logging_file_ = file;
   }

   base::FilePath logging_base_dir() const {
     return logging_base_dir_;
   }

   base::FilePath current_logging_dir() const {
     return current_logging_dir_;
   }

   std::string current_logging_file() const {
     return current_logging_file_;
   }

   bool IsLogDirRecordEmpty() const {
     return logs_tree_.empty();
   }

   size_t GetTotalLogDirRecordSize() const {
     return logs_tree_.size();
   }

   std::string GetOldestLogDirRecord() const {
     if(logs_tree_.empty()) {
       return std::string("");
     } else {
       return logs_tree_.front();
     }
   }

   void ReleaseOldestLogDirRecord() {
     std::lock_guard<std::mutex> lock(logs_tree_mutex_);
     logs_tree_.pop_front();
   }

   std::string MakeLoggingFileName(const std::string &dir) const;
   std::string GetCurrentLoggingFileSuffix() const;
   int64_t GetTotalLoggedSize() const;
   void InitLogsFileTree(const base::FilePath& current_dir);
   void Dump() const;

  private:
   base::FilePath logging_base_dir_;
   base::FilePath file_tree_path_;
   base::FilePath current_logging_dir_;
   std::string current_logging_file_;
   std::deque<std::string> logs_tree_;
   // std::deque<std::string> logs_records_;

   const std::string kLogFilePrefix_;
   const std::string kLogFileSuffix_;
   const std::string kLogFileCurrentSuffix_;

   std::mutex logs_tree_mutex_;
};

}  // namespace stack
}  // namespace bt
}  // namespace mediatek
}  // namespace vendor

#endif