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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 回答评论
from __future__ import unicode_literals, absolute_import, print_function
from itertools import chain, groupby
from operator import itemgetter
from django.db.models import Q, Count
from django.utils.html import escape
from gm_types.gaia import (
USER_TYPE,
)
from qa.models.answer import (
AnswerReply,
AnswerVoteReply,
AnswerReplyImages,
)
from qa.utils.time import get_timestamp_or_none
from talos.services import (
UserConvertService,
)
from utils.base_manager import (
BaseManager,
)
class AnswerReplyManager(BaseManager):
model = AnswerReply
@staticmethod
def reply_is_voted_by_ids(reply_ids, viewer_user_id=None):
"""
获取回答评论的点赞状态
:param reply_ids:
:param viewer_user_id:
:return:
"""
result = {}
if not all([reply_ids, viewer_user_id]):
return result
avrs = AnswerVoteReply.objects.filter(
user=viewer_user_id,
answerreply_id__in=reply_ids
).values_list("answerreply_id", flat=True)
if avrs:
result = {av: True for av in avrs}
return result
@staticmethod
def get_reply_images_by_reply_ids(reply_ids):
"""
通过评论id获取图片
:param reply_ids:
:return:
"""
reply_images = AnswerReplyImages.objects.filter(
reply_id__in=reply_ids
).values("reply_id", "url", "width", "height")
result = {}
for reply_id, items in groupby(
sorted(reply_images, key=itemgetter("reply_id")),
key=itemgetter("reply_id")
):
result.update({
reply_id: [{
"image_url": item.get("url", ""),
"width": item.get("width", 0),
"height": item.get("height", 0),
} for item in items]
})
return result
def get_reply_comment_nums_by_ids(self, reply_ids):
"""
获取评论的子评论数
:param reply_ids:
:return:
"""
if not reply_ids:
return {}
_nums = self.model.objects.filter(
is_online=True,
first_reply_id__in=reply_ids
).values("first_reply_id").annotate(cnt=Count("first_reply_id")).values("first_reply_id", "cnt")
return {num["first_reply_id"]: num["cnt"] for num in _nums}
def get_comments_data(self, reply_map_ids):
"""
获取评论数据
:param reply_map_ids:评论映射id列表[(reply_id, commented_id)]
:return:
"""
result = {}
if not list(filter(None, reply_map_ids)):
return result
comments_info = self.model.objects.filter(
pk__in=set(filter(None, chain.from_iterable(reply_map_ids)))
).values("id", "content", "user")
valid_user_ids, comments_info_pre_dic = set(), dict()
for item in comments_info:
_data = dict(item)
_user_id = _data.pop("user", 0)
_data.update({
"user_id": _user_id
})
valid_user_ids.add(_user_id)
comments_info_pre_dic.update({
item["id"]: _data
})
# 获取用户信息，这里不需要拿是否关注的状态
users_info = UserConvertService.get_user_info_by_user_ids(
user_ids=valid_user_ids,
)
# 获取评论图片数据
comment_images_data = self.get_reply_images_by_reply_ids(
reply_ids=set(filter(None, map(itemgetter(0), reply_map_ids)))
)
for r_id, comment_id in reply_map_ids:
reply_info = comments_info_pre_dic.get(r_id, {})
comment_info = comments_info_pre_dic.get(comment_id, {})
reply_user_info = users_info.get(reply_info.get("user_id", 0), {})
comment_user_info = users_info.get(comment_info.get("user_id", 0), {})
if comment_info and reply_user_info.get("user_id", 0) != comment_user_info.get("user_id", 0):
at_nickname = comment_user_info.get("user_name", "")
else:
at_nickname = ""
if reply_info:
_data = {
'content': escape(reply_info.get("content", "")),
"comment_id": r_id,
"comment_user_id": reply_user_info.get("user_id", 0),
'comment_user_type': USER_TYPE.NORMAL,
"comment_user_gm_url": "", # 占位，在backend处理
"nickname": reply_user_info.get("user_name", ""),
"at_user_id": comment_user_info.get("user_id", 0),
"at_user_gm_url": "", # 占位，在backend处理
"at_user_type": USER_TYPE.NORMAL,
"at_nickname": at_nickname,
# 补充用户信息
"comment_user_info": reply_user_info,
"at_user_info": comment_user_info,
"images": comment_images_data.get(r_id, []),
}
result.update({
(r_id, comment_id): _data
})
return result
def get_reply_sub_comments(self, reply_id, need_newest=False, top_comment_id=None, start_num=0, count=2):
"""
获取评论的子评论，引用时注意传参，默认获取全部的评论(老逻辑)，考虑性能问题不要这么整……
:param reply_id: 评论id
:param need_newest: 是否需要最新的
:param top_comment_id: 回答的二级评论置顶
:param start_num:
:param count:
:return: [(id, commented_id)]注意这里只返回映射关系
"""
if need_newest:
_order_by = "-id"
else:
_order_by = "id"
comment_map_ids = []
if top_comment_id and not start_num:
second_level_comment = self.model.objects.filter(
id=top_comment_id,
is_online=True
).only("id", "commented_reply_id").first()
if second_level_comment:
comment_map_ids.append((second_level_comment.id, second_level_comment.commented_reply_id))
count -= 1
comment_map_ids.extend(list(self.model.objects.filter(
first_reply_id=reply_id,
is_online=True
).order_by(_order_by).values_list(
"id", "commented_reply_id")[start_num: start_num + count])
)
return comment_map_ids
def get_reply_base_data(self, reply, need_sub_comments=False, need_newest=False, top_comment_id=None):
"""
获取评论信息
:param reply:
:param need_sub_comments: 是否取子评论
:param need_newest: 子评论排序(是否需要最新)
:param top_comment_id: 回答的二级评论置顶
:return:
"""
_data = {
"reply_id": reply.id,
"content": escape(reply.content),
"user_id": reply.user_id, # 用于获取用户信息
"reply_date": get_timestamp_or_none(reply.create_time),
'comments': [],
"favor_amount": reply.like_num,
'reply_count': 0, # 子评论数
'is_liked': False, # 是否点赞，这个后期再拼接
"comments_map_ids": [] # 子评论映射列表
}
if need_sub_comments:
_data["comments_map_ids"] = self.get_reply_sub_comments(
reply_id=reply.id,
need_newest=need_newest,
top_comment_id=top_comment_id
)
return _data
def get_reply_data_by_replies_obj(self, replies, viewer_user_id=None, need_sub_comments=False, need_newest=False, top_comment_id=None):
"""
通过评论obj对象获取评论数据
:param replies:
:param viewer_user_id: 当前作者用户id
:param need_sub_comments: 是否取子评论
:param need_newest: 子评论排序(是否需要最新)
:param top_comment_id: 回答的二级评论置顶
:return:
"""
result = {}
if not replies:
return result
valid_user_ids = set()
sub_comment_map_ids = []
for reply in replies:
valid_user_ids.add(reply.user_id)
_data = self.get_reply_base_data(
reply,
need_sub_comments=need_sub_comments,
need_newest=need_newest,
top_comment_id=top_comment_id
)
sub_comment_map_ids.extend(_data.get("comments_map_ids", []))
result[reply.id] = _data
_reply_ids = list(result.keys())
# 评论的用户信息
reply_user_infos = UserConvertService.get_user_info_by_user_ids(user_ids=valid_user_ids)
# 评论的子评论信息
sub_comments_data = self.get_comments_data(sub_comment_map_ids)
# 评论的子评论数
reply_comment_nums = self.get_reply_comment_nums_by_ids(_reply_ids)
# 评论的点赞状态
reply_liked_status = self.reply_is_voted_by_ids(_reply_ids, viewer_user_id=viewer_user_id)
# 评论的图片
reply_images_data = self.get_reply_images_by_reply_ids(_reply_ids)
for reply_id, reply_data in result.items():
reply_data.update({
"reply_user_info": reply_user_infos.get(reply_data.get("user_id", 0), {}),
"reply_count": reply_comment_nums.get(reply_id, 0),
"comments": list(filter(None, (
sub_comments_data.get(map_id) for map_id in reply_data.pop("comments_map_ids", [])))),
"is_liked": reply_liked_status.get(reply_id, False),
"images": reply_images_data.get(reply_id, []),
})
return result
answer_reply_manager = AnswerReplyManager()