db/my_eloquent.py

@@ -19,13 +19,32 @@ class Model (eloquent.Model):
             self,
             *args:  str,
     ) -> None:
-        q = self.query ()
-        for arg in args:
-            q = q.where (arg, getattr (self, arg))
-        row = q.first ()
+        row = self._find_upsert_row (*args)
         if row is not None:
             self.id = row.id
             # pylint: disable = invalid-name
             # pylint: disable = attribute-defined-outside-init
             self._Model__exists = True
             self.save ()
+            return
+
+        try:
+            self.save ()
+        except Exception:
+            row = self._find_upsert_row (*args)
+            if row is None:
+                raise
+            self.id = row.id
+            # pylint: disable = invalid-name
+            # pylint: disable = attribute-defined-outside-init
+            self._Model__exists = True
+            self.save ()
+
+    def _find_upsert_row (
+            self,
+            *args:  str,
+    ):
+        q = self.query ()
+        for arg in args:
+            q = q.where (arg, getattr (self, arg))
+        return q.first ()

get_comments_by_video_code.py

@@ -8,12 +8,9 @@
 from __future__ import annotations
 
 import json
-import os
 import sys
-from datetime import date, datetime
-from typing import TypedDict, cast
-
-from eloquent import DatabaseManager, Model
+from datetime import datetime
+from typing import TypedDict
 
 from db.config import DB
 from db.models import Video

get_kiriban_list.py

@@ -8,12 +8,9 @@
 from __future__ import annotations
 
 import json
-import os
 import sys
 from datetime import date, datetime
-from typing import TypedDict, cast
-
-from eloquent import DatabaseManager, Model
+from typing import cast
 
 from db.config import DB
 from db.models import Video, VideoHistory
@@ -25,14 +22,15 @@ def main (
         views_counts:   list[int],
         base_date:      date,
 ) -> None:
-    if not base_date:
-        base_date = datetime.now ().date ()
-
     kiriban_list: list[tuple[int, str, str]] = []
 
-    latest_fetched_at = cast (date, (VideoHistory
+    latest_fetched_at = cast (date | None,
+                              (VideoHistory
                                .where ('fetched_at', '<=', base_date)
                                .max ('fetched_at')))
+    if latest_fetched_at is None:
+        print ('[]')
+        return
 
     for views_count in views_counts:
         targets = { vh.video.code for vh in (
@@ -63,5 +61,5 @@ def main (
 
 
 if __name__ == '__main__':
-    main (map (int, sys.argv[2:]),
+    main (list (map (int, sys.argv[2:])),
           datetime.strptime (sys.argv[1], '%Y-%m-%d').date ())

get_videos.py

@@ -8,12 +8,9 @@
 from __future__ import annotations
 
 import json
-import os
 from datetime import date, datetime
 from typing import TypedDict
 
-from eloquent import DatabaseManager, Model
-
 from db.config import DB
 from db.models import Video
 
@@ -36,20 +33,10 @@ def main (
         for video_tag in row.video_tags:
             if video_tag.untagged_at is None:
                 video['tags'].append (video_tag.tag.name)
-        videos.append(video)
+        videos.append (video)
 
     print (json.dumps (videos, default = str))
 
-
-class DbConfig (TypedDict):
-    driver:     str
-    host:       str
-    database:   str
-    user:       str
-    password:   str
-    prefix:     str
-
-
 class VideoDict (TypedDict):
     id:             int
     code:           str

update_db.py

@@ -8,17 +8,16 @@
 from __future__ import annotations
 
 import json
-import os
+import logging
 import random
 import string
 import time
 import unicodedata
-from datetime import datetime, timedelta
+from datetime import date, datetime, timedelta
 from typing import Any, TypedDict, cast
 
 import jaconv
 import requests
-from eloquent import DatabaseManager, Model
 
 from db.config import DB
 from db.models import (Comment,
@@ -29,39 +28,55 @@ from db.models import (Comment,
                        VideoHistory,
                        VideoTag)
 
+logger = logging.getLogger (__name__)
+logging.basicConfig (
+        level = logging.INFO,
+        format = '%(asctime)s %(levelname)s %(message)s')
+
 
 def main (
 ) -> None:
     now = datetime.now ()
+    today = now.date ()
 
-    api_data = search_nico_by_tags (['伊地知ニジカ',
+    search_result = search_nico_by_tags (['伊地知ニジカ',
                                           'ぼざろクリーチャーシリーズ',
                                           'ぼざろクリーチャーシリーズ外伝'])
+    comments_by_video_code = fetch_comments_by_video_code (search_result['videos'])
 
-    DB.begin_transaction ()
+    context: UpdateContext = { 'api_data':               search_result['videos'],
+                               'comments_by_video_code': comments_by_video_code,
+                               'deletable':              search_result['is_complete'] }
+
+    connection = DB.connection ()
+    connection.begin_transaction ()
     try:
-        update_tables (api_data, now)
-        DB.commit ()
+        update_tables (context, now, today)
+        connection.commit ()
     except Exception:
-        DB.rollback ()
+        connection.rollback ()
         raise
 
 
 def update_tables (
-        api_data:   list[VideoResult],
+        context:  UpdateContext,
         now:      datetime,
+        today:    date,
 ) -> None:
     alive_video_codes: list[str] = []
 
-    for datum in api_data:
-        tag_names: list[str] = datum['tags'].split ()
+    for datum in context['api_data']:
+        tag_names = datum['tags'].split ()
+        normalised_tag_names = {normalise (tag_name) for tag_name in tag_names}
+
         user: User | None = None
-        if datum['userId']:
-            user = User.where('code', str (datum['userId'])).first ()
+        if datum['userId'] is not None:
+            user = User.where ('code', str (datum['userId'])).first ()
             if user is None:
                 user = User ()
                 user.code = str (datum['userId'])
                 user.save ()
+
         video = Video ()
         video.code = datum['contentId']
         video.user_id = user.id if user else None
@@ -71,60 +86,72 @@ def update_tables (
         video.deleted_at = None
         video.upsert ()
         alive_video_codes.append (video.code)
+
         video_history = VideoHistory ()
         video_history.video_id = video.id
-        video_history.fetched_at = now
+        video_history.fetched_at = today
         video_history.views_count = datum['viewCounter']
         video_history.upsert ()
+
         video_tags = [video_tag for video_tag in video.video_tags
                                 if video_tag.untagged_at is None]
-        tag: Tag | None
-        video_tag: VideoTag | None
         for video_tag in video_tags:
             tag = video_tag.tag
-            if (tag is not None
-                    and (normalise (tag.name) not in map (normalise, tag_names))):
-                video_tag.untagged_at = now
+            if tag is None:
+                continue
+            if normalise (tag.name) in normalised_tag_names:
+                continue
+            video_tag.untagged_at = today
             video_tag.save ()
+
         for tag_name in tag_names:
             tag = Tag.where ('name', tag_name).first ()
             if tag is None:
                 tag = Tag ()
                 tag.name = tag_name
                 tag.save ()
+
             video_tag = (VideoTag.where ('video_id', video.id)
                                  .where ('tag_id', tag.id)
-                                 .where_null ('untagged_at')
                                  .first ())
             if video_tag is None:
                 video_tag = VideoTag ()
                 video_tag.video_id = video.id
                 video_tag.tag_id = tag.id
-                video_tag.tagged_at = now
+
+            video_tag.tagged_at = getattr (video_tag, 'tagged_at', None) or today
             video_tag.untagged_at = None
-                video_tag.save ()
-        for com in fetch_comments (video.code):
+            video_tag.upsert ()
+
+        for com in context['comments_by_video_code'].get (video.code, []):
             user = User.where ('code', com['userId']).first ()
             if user is None:
                 user = User ()
                 user.code = com['userId']
                 user.save ()
+
             comment = Comment ()
             comment.video_id = video.id
             comment.comment_no = com['no']
             comment.user_id = user.id
             comment.content = com['body']
             comment.posted_at = datetime.fromisoformat (com['postedAt'])
-            comment.nico_count = com['nicoruCount']
-            comment.vpos_ms = com['vposMs']
+            comment.nico_count = com.get ('nicoruCount', 0)
+            comment.vpos_ms = com.get ('vposMs', 0)
             comment.upsert ()
 
-    # 削除動画
+    if not context['deletable']:
+        logger.warning ('skip soft-delete because the latest fetch was incomplete')
+        return
+
+    if not alive_video_codes:
+        logger.warning ('skip soft-delete because no alive videos were fetched')
+        return
+
     videos = (Video.where_not_in ('code', alive_video_codes)
                    .where_null ('deleted_at')
                    .get ())
     for video in videos:
-        if video.code not in alive_video_codes:
         video.deleted_at = now
         video.save ()
 
@@ -143,19 +170,38 @@ def fetch_video_data (
             + '_'
             + str (random.randrange (10 ** 12, 10 ** 13)))
 
-    url = (f"https://www.nicovideo.jp/api/watch/v3_guest/{ video_code }"
-            + f"?actionTrackId={ action_track_id }")
+    url = (f'https://www.nicovideo.jp/api/watch/v3_guest/{ video_code }'
+           + f'?actionTrackId={ action_track_id }')
 
     return requests.post (url, headers = headers, timeout = 60).json ()
 
 
+def fetch_comments_by_video_code (
+        videos: list[VideoResult],
+) -> dict[str, list[CommentResult]]:
+    comments_by_video_code: dict[str, list[CommentResult]] = {}
+
+    for video in videos:
+        video_code = video['contentId']
+        try:
+            comments_by_video_code[video_code] = fetch_comments (video_code)
+        except (KeyError,
+                TypeError,
+                ValueError,
+                requests.RequestException) as exc:
+            logger.warning ('failed to fetch comments: %s (%s)', video_code, exc)
+            comments_by_video_code[video_code] = []
+
+    return comments_by_video_code
+
+
 def fetch_comments (
         video_code: str,
 ) -> list[CommentResult]:
-    try:
-        nv_comment = fetch_video_data (video_code)['data']['comment']['nvComment']
-    except KeyError:
-        return []
+    video_data = fetch_video_data (video_code)
+    nv_comment = (video_data.get ('data', {})
+                           .get ('comment', {})
+                           .get ('nvComment'))
     if nv_comment is None:
         return []
 
@@ -164,31 +210,68 @@ def fetch_comments (
                 'Content-Type':       'application/json' }
 
     params = { 'params':      nv_comment['params'],
-               'additionals':   { },
+               'additionals': {},
                'threadKey':   nv_comment['threadKey'] }
 
     url = nv_comment['server'] + '/v1/threads'
 
-    res = (requests.post (url, json.dumps (params),
+    response = requests.post (url,
+                              json = params,
                               headers = headers,
                               timeout = 60)
-            .json ())
+    response.raise_for_status ()
+    res = response.json ()
 
-    try:
-        return res['data']['threads'][1]['comments']
-    except (IndexError, KeyError):
+    return select_comments_from_threads (res)
+
+
+def select_comments_from_threads (
+        response: dict[str, Any],
+) -> list[CommentResult]:
+    threads = response.get ('data', {}).get ('threads', [])
+    if not isinstance (threads, list):
         return []
 
+    main_comments: list[CommentResult] = []
+    fallback_comments: list[CommentResult] = []
+
+    for thread in threads:
+        comments = thread.get ('comments') if isinstance (thread, dict) else None
+        if not isinstance (comments, list):
+            continue
+
+        casted_comments = cast (list[CommentResult], comments)
+        if len (casted_comments) > len (fallback_comments):
+            fallback_comments = casted_comments
+
+        fork = str (thread.get ('fork', '')).lower ()
+        label = str (thread.get ('label', '')).lower ()
+        thread_id = str (thread.get ('id', '')).lower ()
+        if fork == 'main' or 'main' in label or 'main' in thread_id:
+            main_comments = casted_comments
+
+    selected_comments = main_comments or fallback_comments
+    deduped_comments: dict[int, CommentResult] = {}
+    for comment in selected_comments:
+        comment_no = comment.get ('no')
+        if not isinstance (comment_no, int):
+            continue
+        deduped_comments[comment_no] = comment
+
+    return [deduped_comments[comment_no]
+            for comment_no in sorted (deduped_comments)]
+
 
 def search_nico_by_tags (
         tags:   list[str],
-) -> list[VideoResult]:
+) -> SearchNicoResult:
     today = datetime.now ()
 
     url = ('https://snapshot.search.nicovideo.jp'
            + '/api/v2/snapshot/video/contents/search')
 
-    result_data: list[VideoResult] = []
+    result_by_video_code: dict[str, VideoResult] = {}
+    is_complete = True
     to = datetime (2022, 12, 3)
     while to <= today:
         time.sleep (1.2)
@@ -215,31 +298,67 @@ def search_nico_by_tags (
                                                     'startTime'),
                                      '_limit':     100,
                                      'jsonFilter': query_filter }
-        res = requests.get (url, params = cast (dict[str, int | str], params), timeout = 60).json ()
         try:
-            result_data += res['data']
-        except KeyError:
-            pass
+            response = requests.get (
+                    url,
+                    params = cast (dict[str, int | str], params),
+                    timeout = 60)
+            response.raise_for_status ()
+            res = response.json ()
+            for datum in cast (list[VideoResult], res.get ('data', [])):
+                result_by_video_code[datum['contentId']] = datum
+        except (ValueError, requests.RequestException) as exc:
+            logger.warning ('snapshot fetch failed: %s - %s (%s)',
+                            to.date (),
+                            until.date (),
+                            exc)
+            is_complete = False
         to = until + timedelta (days = 1)
 
     for video in TrackedVideo.get ():
-        if video.code in map (lambda v: v['contentId'], result_data):
+        if video.code in result_by_video_code:
             continue
         try:
-            video_data = fetch_video_data (video.code)['data']
-            result_data.append ({
-                    'contentId':    video.code,
-                    'userId':       video_data['video']['userId'],
-                    'title':        video_data['video']['title'],
+            tracked_video = video
+            video_data = fetch_video_data (tracked_video.code)['data']
+            owner = video_data.get ('owner') or {}
+            video_info = video_data['video']
+            result_by_video_code[tracked_video.code] = {
+                    'contentId':    tracked_video.code,
+                    'userId':       owner.get ('id'),
+                    'title':        video_info['title'],
                     'tags':         ' '.join (map (lambda t: t['name'],
                                                    video_data['tag']['items'])),
-                    'description':  video_data['video']['description'],
-                    'viewCounter':  video_data['video']['count']['view'],
-                    'startTime':    video_data['video']['registeredAt'] })
-        except Exception:
-            pass
+                    'description':  video_info['description'],
+                    'viewCounter':  video_info['count']['view'],
+                    'startTime':    video_info['registeredAt'] }
+        except (KeyError,
+                TypeError,
+                ValueError,
+                requests.RequestException) as exc:
+            logger.warning ('tracked video fetch failed: %s (%s)', video.code, exc)
+            is_complete = False
 
-    return result_data
+    return { 'videos':      list (result_by_video_code.values ()),
+             'is_complete': is_complete }
+
+
+def normalise (
+        text: str,
+) -> str:
+    return jaconv.hira2kata (
+            unicodedata.normalize ('NFKC', text.strip ())).lower ()
+
+
+class SearchNicoResult (TypedDict):
+    videos:      list['VideoResult']
+    is_complete: bool
+
+
+class UpdateContext (TypedDict):
+    api_data:                list['VideoResult']
+    comments_by_video_code:  dict[str, list['CommentResult']]
+    deletable:               bool
 
 
 class VideoSearchParam (TypedDict):
@@ -262,25 +381,12 @@ class VideoResult (TypedDict):
 
 
 class CommentResult (TypedDict):
-    id:             str
     no:           int
-    vposMs:         int
-    body:           str
-    commands:       list[str]
     userId:       str
-    isPremium:      bool
-    score:          int
+    body:         str
     postedAt:     str
     nicoruCount:  int
-    nicoruId:       Any
-    source:         str
-    isMyPost:       bool
-
-
-def normalise (
-        s:  str,
-) -> str:
-    return jaconv.hira2kata (unicodedata.normalize ('NFKC', s)).lower ()
+    vposMs:       int
 
 
 if __name__ == '__main__':