#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging
import traceback
from libs.es import ESPerform


class GroupUtils(object):

    @classmethod
    def get_group_query_result(cls, query, offset, size):
        try:
            q = dict()

            multi_fields = {
                'description': 2,
                'name': 4,
            }
            query_fields = ['^'.join((k, str(v))) for (k, v) in multi_fields.items()]
            multi_match = {
                'query': query,
                'type': 'cross_fields',
                'operator': 'and',
                'fields': query_fields,
            }

            q['query'] = {
                'bool': {
                    "must": [
                        {"term": {"is_online": True}},
                        {"term": {"is_deleted": False}}
                    ],
                    "should": [
                        {'multi_match': multi_match}
                    ],
                    "minimum_should_match": 1
                }
            }
            q["_source"] = {
                "includes": ["id"]
            }

            return ESPerform.get_search_results(ESPerform.get_cli(), "group", q, offset, size)
        except:
            logging.error("catch exception,err_msg:%s" % traceback.format_exc())
            return {"total_count": 0, "hits": []}

    @classmethod
    def get_hot_pictorial_recommend_result_list(cls, offset, size, es_cli_obj=None, attention_tag_list=[]):
        try:
            if not es_cli_obj:
                es_cli_obj = ESPerform.get_cli()

            functions_list = list()
            for tag_id in attention_tag_list:
                functions_list.append({
                    "filter": {
                        "constant_score": {
                            "filter": {
                                "term": {
                                    "tag_id": tag_id
                                }
                            }
                        }
                    },
                    "weight": 20
                })

                if len(functions_list) >= 20:
                    break

            functions_list.append(
                {
                    "gauss": {
                        "create_time": {
                            "scale": "1d",
                            "decay": 0.99
                        }
                    },
                    "weight": 60
                }
            )
            q = {
                "query": {
                    "function_score": {
                        "query": {
                            "bool": {
                                "filter": [
                                    {"term": {"is_online": True}},
                                    {"term": {"is_deleted": False}},
                                    {"term": {"effective": True}}
                                ],
                                "must_not": [
                                    {"term": {"is_default": 1}}
                                ]
                            }
                        },
                        "score_mode": "sum",
                        "boost_mode": "sum",
                        "functions": functions_list
                    }
                }
            }
            q["sort"] = [
                {
                    "_script": {
                        "type": "number",
                        "script": {
                            "lang": "expression",
                            "source": "_score+doc['offline_score']"
                        },
                        "order": "desc"
                    }
                },
                {
                    "_score": {
                        "order": "desc"
                    }
                }
            ]
            q["_source"] = {
                "includes": ["id"]
            }

            result_dict = ESPerform.get_search_results(es_cli_obj, "pictorial", q, offset, size)

            pictorial_ids_list = []
            if len(result_dict["hits"]) > 0:
                pictorial_ids_list = [item["_source"]["id"] for item in result_dict["hits"]]

            return pictorial_ids_list
        except:
            logging.error("catch exception,err_msg:%s" % traceback.format_exc())
            return []

    @classmethod
    def get_user_attention_pictorial_list(cls, user_id, offset=0, size=10, es_cli_obj=None):
        """
        :remark: 获取用户关注小组列表
        :return:
        """
        try:
            if not es_cli_obj:
                es_cli_obj = ESPerform.get_cli()

            q = dict()
            q["query"] = {
                "bool": {
                    "must": [
                        {"term": {"is_online": True}},
                        {"term": {"user_id": user_id}},
                        {"term": {"is_deleted": False}},
                        {"term": {"effective": True}}
                    ]
                }
            }
            q["_source"] = {
                "includes": ["attention_pictorial_id_list"]
            }

            result_dict = ESPerform.get_search_results(es_cli_obj, "user", q, offset, size)
            if len(result_dict["hits"]) > 0:
                return result_dict["hits"][0]["_source"]["attention_pictorial_id_list"]
            else:
                return []

        except:
            logging.error("catch exception,err_msg:%s" % traceback.format_exc())
            return []

    @classmethod
    def get_pictorial_ids_by_aggs(cls, pictorial_ids_list, es_cli_obj=None):
        """
        :remark:聚合查询获取小组列表
        :param group_id_list:
        :return:
        """
        try:
            if not es_cli_obj:
                es_cli_obj = ESPerform.get_cli()

            q = dict()
            q["size"] = 0
            q["query"] = {
                "terms": {
                    "pictorial_id": pictorial_ids_list
                }
            }
            q["aggs"] = {
                "pictorial_ids": {
                    "terms": {
                        "field": "pictorial_id"
                    },
                    "aggs": {
                        "max_date": {
                            "max": {
                                "field": "update_time_val"
                            }
                        }
                    }
                }
            }

            result_dict = ESPerform.get_search_results(es_cli_obj, "topic", q, aggregations_query=True)
            buckets_list = result_dict["aggregations"]["pictorial_ids"]["buckets"]

            sorted_buckets_list = sorted(buckets_list, key=lambda item: item["max_date"]["value"], reverse=True)
            sorted_pictorial_id_list = [item["key"] for item in sorted_buckets_list]

            return sorted_pictorial_id_list
        except:
            logging.error("catch exception,err_msg:%s" % traceback.format_exc())
            return []

    @classmethod
    def get_search_pictorial_topic(cls, query, offset, size):
        try:
            q = dict()

            multi_fields = {
                'name': 4,
                'description': 4,
                'tag_name': 4
            }
            query_fields = ['^'.join((k, str(v))) for (k, v) in multi_fields.items()]
            multi_match = {
                'query': query,
                'type': 'cross_fields',
                'operator': 'and',
                'fields': query_fields,
            }

            q['query'] = {
                'bool': {
                    "must": [
                        {"term": {"is_online": True}},
                        {"term": {"is_deleted": False}},
                        {"term": {"is_default": 0}},
                        {"range": {"topic_id_list": {"gte": 0}}},
                        {"term": {"is_cover": True}}
                    ],
                    "should": [
                        {'multi_match': multi_match}
                    ],
                    "minimum_should_match": 1
                }
            }
            q["_source"] = {
                "includes": ["id", "is_online", "is_deleted", "is_default", "name", "tag_name", "description",
                             "is_cover",
                             "offline_score",
                             "is_default"]
            }
            q["sort"] = [
                {
                    "_script": {
                        "type": "number",
                        "script": {
                            "lang": "expression",
                            "source": "_score+doc['offline_score']"
                        },
                        "order": "desc"
                    }
                },
                {
                    "_score": {
                        "order": "desc"
                    }
                }
            ]

            logging.info("get get_search_pictorial_topic:%s" % q)
            es_cli_obj = ESPerform.get_cli()
            result_dict = ESPerform.get_search_results(es_cli_obj, "pictorial", q, offset, size)
            return result_dict

        except:
            logging.error("catch exception,err_msg:%s" % traceback.format_exc())
            return None