#   Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# 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.
from __future__ import print_function

from paddlerec.core.reader import Reader
from paddlerec.core.utils import envs
try:
    import cPickle as pickle
except ImportError:
    import pickle

class TrainReader(Reader): 
    def init(self):
        pass
    
    def _process_line(self, line):
        features = line.strip('\n').split('\t')
        feat_idx = []
        feat_value = []
        for idx in range(1, 40):
            feat_idx.append(int(features[idx]))
            feat_value.append(1.0)
        label = [int(features[0])]
        return feat_idx, feat_value, label
    
    def generate_sample(self, line):
        def data_iter():
            feat_idx, feat_value, label = self._process_line(line)
            yield [('feat_idx', feat_idx), ('feat_value', feat_value), ('label',
                                                                        label)]

        return data_iter