Use UUID for queries table .id field, to reduce reliance on chronology.

diff --git a/ytplom.py b/ytplom.py
index 2ca5891ce7cd56bf4150c0450869dcbbd2f0f228..1d94ccc71b61f15f1ab737ede9724ed2350c3ca4 100755 (executable)
--- a/ytplom.py
+++ b/ytplom.py
@@ -32,7 +32,7 @@ DatetimeStr = NewType('DatetimeStr', str)
 QuotaCost = NewType('QuotaCost', int)
 YoutubeId = NewType('YoutubeId', str)
 PathStr = NewType('PathStr', str)
-QueryId = NewType('QueryId', int)
+QueryId = NewType('QueryId', str)
 QueryText = NewType('QueryText', str)
 ProseText = NewType('ProseText', str)
 SqlText = NewType('SqlText', str)
@@ -84,7 +84,7 @@ LEGAL_EXTENSIONS = {'webm', 'mp4', 'mkv'}
 # tables to create database with
 SCRIPT_INIT_DB = '''
 CREATE TABLE yt_queries (
-  id INTEGER PRIMARY KEY,
+  id TEXT PRIMARY KEY,
   text TEXT NOT NULL,
   retrieved_at TEXT NOT NULL
 );
@@ -97,7 +97,7 @@ CREATE TABLE yt_videos (
   definition TEXT NOT NULL
 );
 CREATE TABLE yt_query_results (
-  query_id INTEGER NOT NULL,
+  query_id TEXT NOT NULL,
   video_id TEXT NOT NULL,
   PRIMARY KEY (query_id, video_id),
   FOREIGN KEY (query_id) REFERENCES yt_queries(id),
@@ -196,18 +196,10 @@ class YoutubeQuery(DbData):
                  text: QueryText,
                  retrieved_at: DatetimeStr
                  ) -> None:
-        self.id_ = id_
+        self.id_ = id_ if id_ else QueryId(str(uuid4()))
         self.text = QueryText(text)
         self.retrieved_at = retrieved_at
 
-    def save(self, conn: DatabaseConnection) -> Cursor:
-        """DbData.save but assign .id_ from Cursor's lastrowid if yet unset."""
-        cursor = super().save(conn)
-        if self.id_ is None:
-            assert cursor.lastrowid is not None
-            self.id_ = QueryId(cursor.lastrowid)
-        return cursor
-
     @classmethod
     def get_all_for_video(cls,
                           conn: DatabaseConnection,
@@ -628,7 +620,6 @@ class TaskHandler(BaseHTTPRequestHandler):
         query_data.save(conn)
         for result in collect_results(query_txt):
             result.save(conn)
-            assert query_data.id_ is not None
             result.save_to_query(conn, query_data.id_)
         conn.commit_close()
         self._send_http(headers=[('Location', f'/query/{query_data.id_}')],
@@ -649,7 +640,7 @@ class TaskHandler(BaseHTTPRequestHandler):
             elif 'video_about' == page_name:
                 self._send_video_about(YoutubeId(toks_url[2]))
             elif 'query' == page_name:
-                self._send_query_page(QueryId(int(toks_url[2])))
+                self._send_query_page(QueryId(toks_url[2]))
             elif 'queries' == page_name:
                 self._send_queries_index_and_search()
             elif '_last_playlist_update.json' == page_name: