new module "ythdd_db.py" handles database connections now. minor improvements to ythdd.py

ythdd_db.py

@@ -0,0 +1,61 @@
+#!/usr/bin/python3
+from flask_sqlalchemy import SQLAlchemy
+import toml
+import ythdd_globals
+
+database_file = ythdd_globals.config["general"]["db_file_path"]
+global db
+
+#db = SQLAlchemy()
+
+def initDB(app):
+	db = SQLAlchemy(app)
+
+	class LocalUsers(db.Model):
+		uid = db.Column(db.Integer, primary_key=True)
+		nick = db.Column(db.String)
+		subscriptions = db.Column(db.JSON) # for RSS feed ???
+		playlists = db.Column(db.JSON)
+		watch_history = db.Column(db.JSON)
+		queue_history = db.Column(db.JSON)
+
+	class Videos(db.Model):
+		ytid = db.Column(db.String(11), primary_key=True)
+		archive_version = db.Column(db.Integer)
+		archive_type = db.Column(db.Integer) # 0 - V+A, 1 - V, 2 - A, 3 - other
+		archive_format = db.Column(db.Integer) # 0, 1, 2, 3... from config.toml[postprocessing][presets]
+		title = db.Column(db.String)
+		description = db.Column(db.String)
+		file_path = db.Column(db.String) # with extension
+		viewcount = db.Column(db.Integer)
+		duration = db.Column(db.Integer)
+		like_count = db.Column(db.Integer)
+		upload_date = db.Column(db.Integer)
+		archive_date = db.Column(db.Integer)
+		channel_id = db.Column(db.String(24)) # author, RemoteUser
+		requested_by = db.Column(db.Integer) # LocalUser
+		comments = db.Column(db.JSON) # TODO: watch frequent commenters
+
+	class Playlists(db.Model):
+		# For archiving videos' list from playlist.
+		ytid = db.Column(db.String(11), primary_key=True)
+		name = db.Column(db.String)
+		videos = db.Column(db.String)
+		modify_date = db.Column(db.Integer)
+		archive_date = db.Column(db.Integer)
+		channel_id = db.Column(db.String(24)) # author, RemoteUser
+		requested_by = db.Column(db.Integer) # LocalUser
+
+	class VideoQueue(db.Model):
+		uid = db.Column(db.Integer, primary_key=True)
+		ytid = db.Column(db.String(11))
+		requested_by = db.Column(db.String)
+
+	class RemoteUsers(db.Model):
+		channel_id = db.Column(db.String(24), primary_key=True) # possibly can change?
+		name = db.Column(db.String)
+		subscribers = db.Column(db.Integer)
+		avatar_path = db.Column(db.String)
+		badge = db.Column(db.Integer) # 0 - no badge, 1 - verified, 2 - music
+
+	return db