519 lines
17 KiB
Python
519 lines
17 KiB
Python
"""
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Functionality:
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- handle search to populate results to view
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- cache youtube video thumbnails and channel artwork
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- parse values in hit_cleanup for frontend
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- calculate pagination values
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"""
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import urllib.parse
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from datetime import datetime
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from home.src.download.thumbnails import ThumbManager
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from home.src.es.connect import ElasticWrap
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from home.src.ta.config import AppConfig
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class SearchHandler:
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"""search elastic search"""
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def __init__(self, path, config, data=False):
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self.max_hits = None
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self.path = path
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self.config = config
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self.data = data
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def get_data(self):
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"""get the data"""
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response, _ = ElasticWrap(self.path, config=self.config).get(self.data)
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if "hits" in response.keys():
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self.max_hits = response["hits"]["total"]["value"]
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return_value = response["hits"]["hits"]
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else:
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# simulate list for single result to reuse rest of class
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return_value = [response]
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# stop if empty
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if not return_value:
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return False
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all_videos = []
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all_channels = []
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for idx, hit in enumerate(return_value):
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return_value[idx] = self.hit_cleanup(hit)
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if hit["_index"] == "ta_video":
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video_dict, channel_dict = self.vid_cache_link(hit)
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if video_dict not in all_videos:
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all_videos.append(video_dict)
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if channel_dict not in all_channels:
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all_channels.append(channel_dict)
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elif hit["_index"] == "ta_channel":
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channel_dict = self.channel_cache_link(hit)
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if channel_dict not in all_channels:
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all_channels.append(channel_dict)
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return return_value
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@staticmethod
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def vid_cache_link(hit):
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"""download thumbnails into cache"""
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vid_thumb = hit["source"]["vid_thumb_url"]
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youtube_id = hit["source"]["youtube_id"]
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channel_id_hit = hit["source"]["channel"]["channel_id"]
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chan_thumb = hit["source"]["channel"]["channel_thumb_url"]
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try:
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chan_banner = hit["source"]["channel"]["channel_banner_url"]
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except KeyError:
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chan_banner = False
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video_dict = {"youtube_id": youtube_id, "vid_thumb": vid_thumb}
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channel_dict = {
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"channel_id": channel_id_hit,
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"chan_thumb": chan_thumb,
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"chan_banner": chan_banner,
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}
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return video_dict, channel_dict
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@staticmethod
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def channel_cache_link(hit):
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"""build channel thumb links"""
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channel_id_hit = hit["source"]["channel_id"]
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chan_thumb = hit["source"]["channel_thumb_url"]
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try:
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chan_banner = hit["source"]["channel_banner_url"]
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except KeyError:
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chan_banner = False
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channel_dict = {
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"channel_id": channel_id_hit,
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"chan_thumb": chan_thumb,
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"chan_banner": chan_banner,
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}
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return channel_dict
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@staticmethod
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def hit_cleanup(hit):
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"""clean up and parse data from a single hit"""
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hit["source"] = hit.pop("_source")
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hit_keys = hit["source"].keys()
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if "media_url" in hit_keys:
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parsed_url = urllib.parse.quote(hit["source"]["media_url"])
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hit["source"]["media_url"] = parsed_url
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if "published" in hit_keys:
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published = hit["source"]["published"]
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date_pub = datetime.strptime(published, "%Y-%m-%d")
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date_str = datetime.strftime(date_pub, "%d %b, %Y")
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hit["source"]["published"] = date_str
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if "vid_last_refresh" in hit_keys:
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vid_last_refresh = hit["source"]["vid_last_refresh"]
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date_refresh = datetime.fromtimestamp(vid_last_refresh)
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date_str = datetime.strftime(date_refresh, "%d %b, %Y")
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hit["source"]["vid_last_refresh"] = date_str
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if "playlist_last_refresh" in hit_keys:
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playlist_last_refresh = hit["source"]["playlist_last_refresh"]
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date_refresh = datetime.fromtimestamp(playlist_last_refresh)
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date_str = datetime.strftime(date_refresh, "%d %b, %Y")
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hit["source"]["playlist_last_refresh"] = date_str
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if "vid_thumb_url" in hit_keys:
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youtube_id = hit["source"]["youtube_id"]
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thumb_path = ThumbManager(youtube_id).vid_thumb_path()
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hit["source"]["vid_thumb_url"] = f"/cache/{thumb_path}"
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if "channel_last_refresh" in hit_keys:
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refreshed = hit["source"]["channel_last_refresh"]
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date_refresh = datetime.fromtimestamp(refreshed)
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date_str = datetime.strftime(date_refresh, "%d %b, %Y")
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hit["source"]["channel_last_refresh"] = date_str
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if "channel" in hit_keys:
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channel_keys = hit["source"]["channel"].keys()
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if "channel_last_refresh" in channel_keys:
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refreshed = hit["source"]["channel"]["channel_last_refresh"]
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date_refresh = datetime.fromtimestamp(refreshed)
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date_str = datetime.strftime(date_refresh, "%d %b, %Y")
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hit["source"]["channel"]["channel_last_refresh"] = date_str
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if "subtitle_fragment_id" in hit_keys:
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youtube_id = hit["source"]["youtube_id"]
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thumb_path = ThumbManager(youtube_id).vid_thumb_path()
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hit["source"]["vid_thumb_url"] = f"/cache/{thumb_path}"
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return hit
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class SearchForm:
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"""build query from search form data"""
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CONFIG = AppConfig().config
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def multi_search(self, search_query):
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"""searching through index"""
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path, query, query_type = SearchParser(search_query).run()
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look_up = SearchHandler(path, config=self.CONFIG, data=query)
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search_results = look_up.get_data()
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all_results = self.build_results(search_results)
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return {"results": all_results, "queryType": query_type}
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@staticmethod
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def build_results(search_results):
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"""build the all_results dict"""
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video_results = []
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channel_results = []
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playlist_results = []
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fulltext_results = []
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if search_results:
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for result in search_results:
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if result["_index"] == "ta_video":
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video_results.append(result)
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elif result["_index"] == "ta_channel":
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channel_results.append(result)
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elif result["_index"] == "ta_playlist":
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playlist_results.append(result)
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elif result["_index"] == "ta_subtitle":
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fulltext_results.append(result)
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all_results = {
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"video_results": video_results,
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"channel_results": channel_results,
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"playlist_results": playlist_results,
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"fulltext_results": fulltext_results,
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}
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return all_results
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class SearchParser:
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"""handle structured searches"""
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def __init__(self, search_query):
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self.query_words = search_query.lower().split()
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self.query_map = {"term": [], "fuzzy": []}
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self.append_to = "term"
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def run(self):
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"""collection, return path and query dict for es"""
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print(f"query words: {self.query_words}")
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query_type = self._find_map()
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self._run_words()
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self._delete_unset()
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self._match_data_types()
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path, query = QueryBuilder(self.query_map, query_type).run()
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return path, query, query_type
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def _find_map(self):
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"""find query in keyword map"""
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first_word = self.query_words[0]
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key_word_map = self._get_map()
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if ":" in first_word:
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index_match, query_string = first_word.split(":")
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if index_match in key_word_map:
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self.query_map.update(key_word_map.get(index_match))
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self.query_words[0] = query_string
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return index_match
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self.query_map.update(key_word_map.get("simple"))
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print(f"query_map: {self.query_map}")
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return "simple"
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@staticmethod
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def _get_map():
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"""return map to build on"""
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return {
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"simple": {
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"index": "ta_video,ta_channel,ta_playlist",
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},
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"video": {
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"index": "ta_video",
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"channel": [],
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"active": [],
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},
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"channel": {
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"index": "ta_channel",
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"active": [],
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"subscribed": [],
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},
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"playlist": {
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"index": "ta_playlist",
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"active": [],
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"subscribed": [],
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},
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"full": {
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"index": "ta_subtitle",
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"lang": [],
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"source": [],
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},
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}
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def _run_words(self):
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"""append word by word"""
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for word in self.query_words:
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if ":" in word:
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keyword, search_string = word.split(":")
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if keyword in self.query_map:
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self.append_to = keyword
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word = search_string
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if word:
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self.query_map[self.append_to].append(word)
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def _delete_unset(self):
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"""delete unset keys"""
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new_query_map = {}
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for key, value in self.query_map.items():
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if value:
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new_query_map.update({key: value})
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self.query_map = new_query_map
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def _match_data_types(self):
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"""match values with data types"""
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for key, value in self.query_map.items():
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if key in ["term", "channel"]:
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self.query_map[key] = " ".join(self.query_map[key])
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if key in ["active", "subscribed"]:
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self.query_map[key] = "yes" in value
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class QueryBuilder:
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"""build query for ES from form data"""
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def __init__(self, query_map, query_type):
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self.query_map = query_map
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self.query_type = query_type
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def run(self):
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"""build query"""
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path = self._build_path()
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query = self.build_query()
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print(f"es path: {path}")
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print(f"query: {query}")
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return path, query
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def _build_path(self):
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"""build es index search path"""
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return f"{self.query_map.get('index')}/_search"
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def build_query(self):
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"""build query based on query_type"""
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exec_map = {
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"simple": self._build_simple,
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"video": self._build_video,
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"channel": self._build_channel,
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"playlist": self._build_playlist,
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"full": self._build_fulltext,
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}
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build_must_list = exec_map[self.query_type]
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if self.query_type == "full":
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query = build_must_list()
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else:
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query = {
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"size": 30,
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"query": {"bool": {"must": build_must_list()}},
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}
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return query
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def _get_fuzzy(self):
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"""return fuziness valuee"""
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fuzzy_value = self.query_map.get("fuzzy", ["auto"])[0]
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if fuzzy_value == "no":
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return 0
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if not fuzzy_value.isdigit():
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return "auto"
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if int(fuzzy_value) > 2:
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return "2"
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return fuzzy_value
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def _build_simple(self):
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"""build simple cross index query"""
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must_list = []
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if (term := self.query_map.get("term")) is not None:
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must_list.append(
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{
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"multi_match": {
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"query": term,
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"type": "bool_prefix",
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"fuzziness": self._get_fuzzy(),
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"operator": "and",
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"fields": [
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"channel_name._2gram",
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"channel_name._3gram",
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"channel_name.search_as_you_type",
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"playlist_name._2gram",
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"playlist_name._3gram",
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"playlist_name.search_as_you_type",
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"title._2gram",
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"title._3gram",
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"title.search_as_you_type",
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],
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}
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}
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)
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return must_list
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def _build_video(self):
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"""build video query"""
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must_list = []
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if (term := self.query_map.get("term")) is not None:
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must_list.append(
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{
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"multi_match": {
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"query": term,
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"type": "bool_prefix",
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"fuzziness": self._get_fuzzy(),
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"operator": "and",
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"fields": [
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"title._2gram^2",
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"title._3gram^2",
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"title.search_as_you_type^2",
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"tags",
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"category",
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],
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}
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}
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)
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if (active := self.query_map.get("active")) is not None:
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must_list.append({"term": {"active": {"value": active}}})
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if (channel := self.query_map.get("channel")) is not None:
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must_list.append(
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{
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"multi_match": {
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"query": channel,
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"type": "bool_prefix",
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"fuzziness": self._get_fuzzy(),
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"operator": "and",
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"fields": [
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"channel.channel_name._2gram",
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"channel.channel_name._3gram",
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"channel.channel_name.search_as_you_type",
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],
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}
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}
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)
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return must_list
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def _build_channel(self):
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"""build query for channel"""
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must_list = []
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if (term := self.query_map.get("term")) is not None:
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must_list.append(
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{
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"multi_match": {
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"query": term,
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"type": "bool_prefix",
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"fuzziness": self._get_fuzzy(),
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"operator": "and",
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"fields": [
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"channel_description",
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"channel_name._2gram^2",
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"channel_name._3gram^2",
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"channel_name.search_as_you_type^2",
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],
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}
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}
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)
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if (active := self.query_map.get("active")) is not None:
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must_list.append({"term": {"channel_active": {"value": active}}})
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if (subscribed := self.query_map.get("subscribed")) is not None:
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must_list.append(
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{"term": {"channel_subscribed": {"value": subscribed}}}
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)
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return must_list
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def _build_playlist(self):
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"""build query for playlist"""
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must_list = []
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if (term := self.query_map.get("term")) is not None:
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must_list.append(
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{
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"multi_match": {
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"query": term,
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"type": "bool_prefix",
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"fuzziness": self._get_fuzzy(),
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"operator": "and",
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"fields": [
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"playlist_description",
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"playlist_name._2gram^2",
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"playlist_name._3gram^2",
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"playlist_name.search_as_you_type^2",
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],
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}
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}
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)
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if (active := self.query_map.get("active")) is not None:
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must_list.append({"term": {"playlist_active": {"value": active}}})
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if (subscribed := self.query_map.get("subscribed")) is not None:
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must_list.append(
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{"term": {"playlist_subscribed": {"value": subscribed}}}
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)
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return must_list
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def _build_fulltext(self):
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"""build query for fulltext search"""
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must_list = []
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if (term := self.query_map.get("term")) is not None:
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must_list.append(
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{
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"match": {
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"subtitle_line": {
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"query": term,
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"fuzziness": self._get_fuzzy(),
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}
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}
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}
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)
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if (lang := self.query_map.get("lang")) is not None:
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must_list.append({"term": {"subtitle_lang": {"value": lang[0]}}})
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if (source := self.query_map.get("source")) is not None:
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must_list.append(
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{"term": {"subtitle_source": {"value": source[0]}}}
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)
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query = {
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"size": 30,
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"_source": {"excludes": "subtitle_line"},
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"query": {"bool": {"must": must_list}},
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"highlight": {
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"fields": {
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"subtitle_line": {
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"number_of_fragments": 0,
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"pre_tags": ['<span class="settings-current">'],
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"post_tags": ["</span>"],
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}
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}
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},
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}
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return query
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