# Copyright 2020 Huawei Technologies Co., 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.
# ============================================================================
"""
The parser for AI CPU preprocess data.
"""
import os

from tabulate import tabulate

from mindinsight.profiler.common._utils import fwrite_format, get_file_join_name
from mindinsight.profiler.common.log import logger

_source_file_target = 'DATA_PREPROCESS.dev.AICPU'
_dst_file_title = 'title:DATA_PREPROCESS AICPU'
_dst_file_column_title = ['serial_number', 'node_name', 'total_time(us)', 'dispatch_time(us)',
                          'RunV2_start', 'compute_start', 'memcpy_start', 'memcpy_end', 'RunV2_end']


class DataPreProcessParser:
    """
    The Parser for AI CPU preprocess data.

    Args:
         input_path(str): The profiling job path.
         output_filename(str): The output data path and name.

    """

    def __init__(self, input_path, output_filename):
        self._input_path = input_path
        self._output_filename = output_filename
        self._source_file_name = self._get_source_file()

    def _get_source_file(self):
        """Get log file name, which was created by ada service."""

        return get_file_join_name(self._input_path, _source_file_target)

    def execute(self):
        """Execute the parser, get result data, and write it to the output file."""

        if not os.path.exists(self._source_file_name):
            logger.info("Did not find the aicpu profiling source file")
            return

        with open(self._source_file_name, 'rb') as ai_cpu_data:
            ai_cpu_str = str(ai_cpu_data.read().replace(b'\n\x00', b' ___ ')
                             .replace(b'\x00', b' ___ '))[2:-1]
            ai_cpu_lines = ai_cpu_str.split(" ___ ")

        node_list = list()
        ai_cpu_total_time_summary = 0
        # node serial number
        serial_number = 1
        for i in range(len(ai_cpu_lines)-1):
            node_line = ai_cpu_lines[i]
            thread_line = ai_cpu_lines[i+1]
            if "Node" in node_line and "Thread" in thread_line:
                # get the node data from node_line
                node_name = node_line.split(',')[0].split(':')[-1]
                run_v2_start = node_line.split(',')[1].split(':')[-1]
                compute_start = node_line.split(',')[2].split(':')[-1]
                mercy_start = node_line.split(',')[3].split(':')[-1]
                mercy_end = node_line.split(',')[4].split(':')[-1]
                run_v2_end = node_line.split(',')[5].split(':')[-1]
                # get total_time and dispatch_time from thread line
                total_time = thread_line.split(',')[-1].split('=')[-1].split()[0]
                dispatch_time = thread_line.split(',')[-2].split('=')[-1].split()[0]

                node_data = [serial_number, node_name, total_time, dispatch_time, run_v2_start, compute_start,
                             mercy_start, mercy_end, run_v2_end]

                node_list.append(node_data)
                # calculate the total time
                ai_cpu_total_time_summary += int(total_time)
                # increase node serial number
                serial_number += 1
            elif "Node" in node_line and "Thread" not in thread_line:
                node_name = node_line.split(',')[0].split(':')[-1]
                logger.warning("The node:%s cannot find thread data", node_name)

        node_list.append(["AI CPU Total Time(us):", ai_cpu_total_time_summary])

        if node_list:
            fwrite_format(self._output_filename, data_source=_dst_file_title, is_print=True,
                          is_start=True)
            fwrite_format(self._output_filename,
                          data_source=tabulate(node_list, _dst_file_column_title,
                                               tablefmt='simple'),
                          is_start=True, is_print=True)