# -*- coding: utf-8 -*-
"""``TimePredictor`` — 时间分类模型。

Phase 5 从 ``interface/predictor.py``（约 3028-3132 行）迁出。
原 ``from common.Utils import *`` / ``from interface.modelFactory import *``
已替换为显式 import；``os.path.dirname(__file__)`` 路径引用替换为
``predictors._common.INTERFACE_DIR``。
"""
from __future__ import absolute_import

import os
import re

import numpy as np
import tensorflow as tf

from BiddingKG.dl.common.logging import log
from BiddingKG.dl.common.Utils import timeFormat
from BiddingKG.dl.common.context_utils import spanWindow
from BiddingKG.dl.model_runtime.embed import getModel_w2v
from BiddingKG.dl.predictors._common import INTERFACE_DIR
from BiddingKG.dl.services.external_inference.paieas import limitRun

__all__ = ["TimePredictor"]


class TimePredictor():
    def __init__(self,config=None):
        self.sess = tf.Session(graph=tf.Graph(),config=config)
        self.inputs_code = None
        self.outputs_code = None
        self.input_shape = (2,40,128)
        self.load_model()

    def load_model(self):
        model_path = os.path.join(INTERFACE_DIR, 'timesplit_model')
        if self.inputs_code is None:
            log("get model of time")
            with self.sess.as_default():
                with self.sess.graph.as_default():
                    meta_graph_def = tf.saved_model.loader.load(self.sess, tags=["serve"], export_dir=model_path)
                    signature_key = tf.saved_model.signature_constants.DEFAULT_SERVING_SIGNATURE_DEF_KEY
                    signature_def = meta_graph_def.signature_def
                    self.inputs_code = []
                    self.inputs_code.append(
                        self.sess.graph.get_tensor_by_name(signature_def[signature_key].inputs["input0"].name))
                    self.inputs_code.append(
                        self.sess.graph.get_tensor_by_name(signature_def[signature_key].inputs["input1"].name))
                    self.outputs_code = self.sess.graph.get_tensor_by_name(signature_def[signature_key].outputs["outputs"].name)
                    return self.inputs_code, self.outputs_code
        else:
            return self.inputs_code, self.outputs_code

    def search_time_data(self,list_sentences,list_entitys):
        data_x = []
        points_entitys = []
        for list_sentence, list_entity in zip(list_sentences, list_entitys):
            p_entitys = 0
            p_sentences = 0
            list_sentence.sort(key=lambda x: x.sentence_index)
            while(p_entitys<len(list_entity)):
                entity = list_entity[p_entitys]
                if entity.entity_type in ['time']:
                    while(p_sentences<len(list_sentence)):
                        sentence = list_sentence[p_sentences]
                        if entity.doc_id == sentence.doc_id and entity.sentence_index == sentence.sentence_index:
                            # left = sentence.sentence_text[max(0,entity.wordOffset_begin-self.input_shape[1]):entity.wordOffset_begin]
                            # right = sentence.sentence_text[entity.wordOffset_end:entity.wordOffset_end+self.input_shape[1]]
                            s = spanWindow(tokens=sentence.tokens,begin_index=entity.begin_index,end_index=entity.end_index,size=self.input_shape[1])
                            left = s[0]
                            right = s[1]
                            context = [left, right]
                            x = self.embedding_words(context, shape=self.input_shape)
                            data_x.append(x)
                            points_entitys.append(entity)
                            break
                        p_sentences += 1
                p_entitys += 1
        if len(points_entitys)==0:
            return None
        data_x = np.transpose(np.array(data_x), (1, 0, 2, 3))
        return [data_x, points_entitys]

    def embedding_words(self, datas, shape):
        '''
        @summary:查找词汇对应的词向量
        @param:
            datas:词汇的list
            shape:结果的shape
        @return: array,返回对应shape的词嵌入
        '''
        model_w2v = getModel_w2v()
        embed = np.zeros(shape)
        length = shape[1]
        out_index = 0
        for data in datas:
            index = 0
            for item in data:
                item_not_space = re.sub("\s*", "", item)
                if index >= length:
                    break
                if item_not_space in model_w2v.vocab:
                    embed[out_index][index] = model_w2v[item_not_space]
                    index += 1
                else:
                    embed[out_index][index] = model_w2v['unk']
                    index += 1
            out_index += 1
        return embed

    def predict(self, list_sentences,list_entitys):
        datas = self.search_time_data(list_sentences, list_entitys)
        if datas is None:
            return
        points_entitys = datas[1]
        with self.sess.as_default():
            predict_y = limitRun(self.sess,[self.outputs_code], feed_dict={self.inputs_code[0]:datas[0][0]
                ,self.inputs_code[1]:datas[0][1]})[0]
            for i in range(len(predict_y)):
                entity = points_entitys[i]
                label = np.argmax(predict_y[i])
                values = []
                for item in predict_y[i]:
                    values.append(item)
                if label != 0:
                    if not timeFormat(entity.entity_text):
                        label = 0
                        values[0] = 0.5
                entity.set_Role(label, values)