tubearchivist/tubearchivist/home/src/frontend/searching.py

204 lines
7.3 KiB
Python

"""
Functionality:
- handle search to populate results to view
- cache youtube video thumbnails and channel artwork
- parse values in hit_cleanup for frontend
- calculate pagination values
"""
import urllib.parse
from datetime import datetime
from home.src.download.thumbnails import ThumbManager
from home.src.es.connect import ElasticWrap
from home.src.ta.config import AppConfig
class SearchHandler:
"""search elastic search"""
def __init__(self, path, config, data=False):
self.max_hits = None
self.path = path
self.config = config
self.data = data
def get_data(self):
"""get the data"""
response, _ = ElasticWrap(self.path, config=self.config).get(self.data)
if "hits" in response.keys():
self.max_hits = response["hits"]["total"]["value"]
return_value = response["hits"]["hits"]
else:
# simulate list for single result to reuse rest of class
return_value = [response]
# stop if empty
if not return_value:
return False
all_videos = []
all_channels = []
for idx, hit in enumerate(return_value):
return_value[idx] = self.hit_cleanup(hit)
if hit["_index"] == "ta_video":
video_dict, channel_dict = self.vid_cache_link(hit)
if video_dict not in all_videos:
all_videos.append(video_dict)
if channel_dict not in all_channels:
all_channels.append(channel_dict)
elif hit["_index"] == "ta_channel":
channel_dict = self.channel_cache_link(hit)
if channel_dict not in all_channels:
all_channels.append(channel_dict)
return return_value
@staticmethod
def vid_cache_link(hit):
"""download thumbnails into cache"""
vid_thumb = hit["source"]["vid_thumb_url"]
youtube_id = hit["source"]["youtube_id"]
channel_id_hit = hit["source"]["channel"]["channel_id"]
chan_thumb = hit["source"]["channel"]["channel_thumb_url"]
try:
chan_banner = hit["source"]["channel"]["channel_banner_url"]
except KeyError:
chan_banner = False
video_dict = {"youtube_id": youtube_id, "vid_thumb": vid_thumb}
channel_dict = {
"channel_id": channel_id_hit,
"chan_thumb": chan_thumb,
"chan_banner": chan_banner,
}
return video_dict, channel_dict
@staticmethod
def channel_cache_link(hit):
"""build channel thumb links"""
channel_id_hit = hit["source"]["channel_id"]
chan_thumb = hit["source"]["channel_thumb_url"]
try:
chan_banner = hit["source"]["channel_banner_url"]
except KeyError:
chan_banner = False
channel_dict = {
"channel_id": channel_id_hit,
"chan_thumb": chan_thumb,
"chan_banner": chan_banner,
}
return channel_dict
@staticmethod
def hit_cleanup(hit):
"""clean up and parse data from a single hit"""
hit["source"] = hit.pop("_source")
hit_keys = hit["source"].keys()
if "media_url" in hit_keys:
parsed_url = urllib.parse.quote(hit["source"]["media_url"])
hit["source"]["media_url"] = parsed_url
if "published" in hit_keys:
published = hit["source"]["published"]
date_pub = datetime.strptime(published, "%Y-%m-%d")
date_str = datetime.strftime(date_pub, "%d %b, %Y")
hit["source"]["published"] = date_str
if "vid_last_refresh" in hit_keys:
vid_last_refresh = hit["source"]["vid_last_refresh"]
date_refresh = datetime.fromtimestamp(vid_last_refresh)
date_str = datetime.strftime(date_refresh, "%d %b, %Y")
hit["source"]["vid_last_refresh"] = date_str
if "playlist_last_refresh" in hit_keys:
playlist_last_refresh = hit["source"]["playlist_last_refresh"]
date_refresh = datetime.fromtimestamp(playlist_last_refresh)
date_str = datetime.strftime(date_refresh, "%d %b, %Y")
hit["source"]["playlist_last_refresh"] = date_str
if "vid_thumb_url" in hit_keys:
youtube_id = hit["source"]["youtube_id"]
thumb_path = ThumbManager().vid_thumb_path(youtube_id)
hit["source"]["vid_thumb_url"] = thumb_path
if "channel_last_refresh" in hit_keys:
refreshed = hit["source"]["channel_last_refresh"]
date_refresh = datetime.fromtimestamp(refreshed)
date_str = datetime.strftime(date_refresh, "%d %b, %Y")
hit["source"]["channel_last_refresh"] = date_str
if "channel" in hit_keys:
channel_keys = hit["source"]["channel"].keys()
if "channel_last_refresh" in channel_keys:
refreshed = hit["source"]["channel"]["channel_last_refresh"]
date_refresh = datetime.fromtimestamp(refreshed)
date_str = datetime.strftime(date_refresh, "%d %b, %Y")
hit["source"]["channel"]["channel_last_refresh"] = date_str
return hit
class SearchForm:
"""build query from search form data"""
CONFIG = AppConfig().config
def multi_search(self, search_query):
"""searching through index"""
path = "ta_video,ta_channel,ta_playlist/_search"
data = {
"size": 30,
"query": {
"multi_match": {
"query": search_query,
"type": "bool_prefix",
"operator": "and",
"fuzziness": "auto",
"fields": [
"category",
"channel_description",
"channel_name._2gram",
"channel_name._3gram",
"channel_name.search_as_you_type",
"playlist_description",
"playlist_name._2gram",
"playlist_name._3gram",
"playlist_name.search_as_you_type",
"tags",
"title._2gram",
"title._3gram",
"title.search_as_you_type",
],
}
},
}
look_up = SearchHandler(path, config=self.CONFIG, data=data)
search_results = look_up.get_data()
all_results = self.build_results(search_results)
return {"results": all_results}
@staticmethod
def build_results(search_results):
"""build the all_results dict"""
video_results = []
channel_results = []
playlist_results = []
if search_results:
for result in search_results:
if result["_index"] == "ta_video":
video_results.append(result)
elif result["_index"] == "ta_channel":
channel_results.append(result)
elif result["_index"] == "ta_playlist":
playlist_results.append(result)
all_results = {
"video_results": video_results,
"channel_results": channel_results,
"playlist_results": playlist_results,
}
return all_results