Add subscription manager system

1 files changed, 275 insertions, 9 deletions

diff --git a/youtube/subscriptions.py b/youtube/subscriptions.py
index 93d064d..4591f32 100644
--- a/youtube/subscriptions.py
+++ b/youtube/subscriptions.py
@@ -5,10 +5,17 @@ import sqlite3
 import os
 import time
 import gevent
+import html
+import json
+import traceback
 
 with open('yt_subscriptions_template.html', 'r', encoding='utf-8') as f:
     subscriptions_template = Template(f.read())
 
+with open('yt_subscription_manager_template.html', 'r', encoding='utf-8') as f:
+    subscription_manager_template = Template(f.read())
+
+
 thumbnails_directory = os.path.join(settings.data_dir, "subscription_thumbnails")
 
 # https://stackabuse.com/a-sqlite-tutorial-with-python/
@@ -25,19 +32,26 @@ def open_database():
         cursor = connection.cursor()
         cursor.execute('''CREATE TABLE IF NOT EXISTS subscribed_channels (
                               id integer PRIMARY KEY,
-                              channel_id text UNIQUE NOT NULL,
+                              yt_channel_id text UNIQUE NOT NULL,
                               channel_name text NOT NULL,
                               time_last_checked integer
                           )''')
         cursor.execute('''CREATE TABLE IF NOT EXISTS videos (
                               id integer PRIMARY KEY,
-                              uploader_id integer NOT NULL REFERENCES subscribed_channels(id) ON UPDATE CASCADE ON DELETE CASCADE,
+                              sql_channel_id integer NOT NULL REFERENCES subscribed_channels(id) ON UPDATE CASCADE ON DELETE CASCADE,
                               video_id text UNIQUE NOT NULL,
                               title text NOT NULL,
                               duration text,
                               time_published integer NOT NULL,
                               description text
                           )''')
+        cursor.execute('''CREATE TABLE IF NOT EXISTS tag_associations (
+                              id integer PRIMARY KEY,
+                              tag text NOT NULL,
+                              sql_channel_id integer NOT NULL REFERENCES subscribed_channels(id) ON UPDATE CASCADE ON DELETE CASCADE,
+                              UNIQUE(tag, sql_channel_id)
+                          )''')
+
         connection.commit()
     except:
         connection.rollback()
@@ -55,7 +69,7 @@ def _subscribe(channels):
     connection = open_database()
     try:
         cursor = connection.cursor()
-        cursor.executemany("INSERT OR IGNORE INTO subscribed_channels (channel_id, channel_name, time_last_checked) VALUES (?, ?, ?)", channels)
+        cursor.executemany("INSERT OR IGNORE INTO subscribed_channels (yt_channel_id, channel_name, time_last_checked) VALUES (?, ?, ?)", channels)
         connection.commit()
     except:
         connection.rollback()
@@ -63,12 +77,13 @@ def _subscribe(channels):
     finally:
         connection.close()
 
+# TODO: delete thumbnails
 def _unsubscribe(channel_ids):
     ''' channel_ids is a list of channel_ids '''
     connection = open_database()
     try:
         cursor = connection.cursor()
-        cursor.executemany("DELETE FROM subscribed_channels WHERE channel_id=?", ((channel_id, ) for channel_id in channel_ids))
+        cursor.executemany("DELETE FROM subscribed_channels WHERE yt_channel_id=?", ((channel_id, ) for channel_id in channel_ids))
         connection.commit()
     except:
         connection.rollback()
@@ -82,7 +97,7 @@ def _get_videos(number, offset):
         cursor = connection.cursor()
         db_videos = cursor.execute('''SELECT video_id, title, duration, channel_name
                           FROM videos
-                          INNER JOIN subscribed_channels on videos.uploader_id = subscribed_channels.id
+                          INNER JOIN subscribed_channels on videos.sql_channel_id = subscribed_channels.id
                           ORDER BY time_published DESC
                           LIMIT ? OFFSET ?''', (number, offset))
 
@@ -99,10 +114,98 @@ def _get_videos(number, offset):
     finally:
         connection.close()
 
+def _get_subscribed_channels():
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
+        for item in cursor.execute('''SELECT channel_name, yt_channel_id
+                                      FROM subscribed_channels
+                                      ORDER BY channel_name'''):
+            yield item
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
+
+def _add_tags(channel_ids, tags):
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
+
+        pairs = [(tag, yt_channel_id) for tag in tags for yt_channel_id in channel_ids]
+
+        cursor.executemany('''INSERT OR IGNORE INTO tag_associations (tag, sql_channel_id)
+                              SELECT ?, id FROM subscribed_channels WHERE yt_channel_id = ? ''', pairs)
+        connection.commit()
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
+
+
+
+def _remove_tags(channel_ids, tags):
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
+
+        pairs = [(tag, yt_channel_id) for tag in tags for yt_channel_id in channel_ids]
 
+        cursor.executemany('''DELETE FROM tag_associations WHERE tag = ? AND sql_channel_id = (
+                                          SELECT id FROM subscribed_channels WHERE yt_channel_id = ?
+                                      )''', pairs)
+        connection.commit()
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
 
 
+def _get_tags(channel_id):
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
 
+        return [row[0] for row in cursor.execute('''SELECT tag
+                                      FROM tag_associations
+                                      WHERE sql_channel_id = (
+                                          SELECT id FROM subscribed_channels WHERE yt_channel_id = ?
+                                      )''', (channel_id,))]
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
+
+def _get_all_tags():
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
+        return [row[0] for row in cursor.execute('''SELECT DISTINCT tag FROM tag_associations''')]
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
+
+def _get_channel_names(channel_ids):
+    ''' returns list of (channel_id, channel_name) '''
+    connection = open_database()
+    try:
+        cursor = connection.cursor()
+        result = []
+        for channel_id in channel_ids:
+            row = cursor.execute('''SELECT channel_name FROM subscribed_channels WHERE yt_channel_id = ?''', (channel_id,)).fetchone()
+            result.append( (channel_id, row[0]) )
+        return result
+    except:
+        connection.rollback()
+        raise
+    finally:
+        connection.close()
 
 
 units = {
@@ -166,11 +269,156 @@ def _get_upstream_videos(channel_id):
 
 
 
+def import_subscriptions(env, start_response):
+    content_type = env['parameters']['subscriptions_file'][0]
+    file = env['parameters']['subscriptions_file'][1]
+
+    file = file.decode('utf-8')
+
+    if content_type == 'application/json':
+        try:
+            file = json.loads(file)
+        except json.decoder.JSONDecodeError:
+            traceback.print_exc()
+            start_response('400 Bad Request', () )
+            return b'400 Bad Request: Invalid json file'
+
+        try:
+            channels = ( (item['snippet']['resourceId']['channelId'], item['snippet']['title']) for item in file)
+        except (KeyError, IndexError):
+            traceback.print_exc()
+            start_response('400 Bad Request', () )
+            return b'400 Bad Request: Unknown json structure'
+    else:
+        raise NotImplementedError()
+
+    _subscribe(channels)
+
+    start_response('303 See Other', [('Location', util.URL_ORIGIN + '/subscription_manager'),] )
+    return b''
+
+
+
+sub_list_item_template = Template('''
+<li>
+    <a href="$channel_url" class="sub-list-item-name" title="$channel_name">$channel_name</a>
+    <span class="tag-list">$tags</span>
+    <input class="sub-list-checkbox" name="channel_ids" value="$channel_id" form="subscription-manager-form" type="checkbox">
+</li>''')
+
+def get_subscription_manager_page(env, start_response):
+
+    sub_list_html = ''
+    for channel_name, channel_id in _get_subscribed_channels():
+        sub_list_html += sub_list_item_template.substitute(
+            channel_url = util.URL_ORIGIN + '/channel/' + channel_id,
+            channel_name = html.escape(channel_name),
+            channel_id = channel_id,
+            tags = ', '.join(_get_tags(channel_id)),
+        )
+
+
+
+    start_response('200 OK', [('Content-type','text/html'),])
+    return subscription_manager_template.substitute(
+        header = html_common.get_header(),
+        sub_list = sub_list_html,
+        page_buttons = '',
+    ).encode('utf-8')
+
+def list_from_comma_separated_tags(string):
+    tags = []
+    prev_comma = -1
+    next_comma = string.find(',')
+    while next_comma != -1:
+        tag = string[prev_comma+1:next_comma].strip()
+        if tag:
+            tags.append(tag)
+
+        prev_comma = next_comma
+        next_comma = string.find(',', prev_comma+1)
+
+    last_tag = string[prev_comma+1:].strip()
+    if last_tag:
+        tags.append(last_tag)
+    return tags
+
+
+unsubscribe_list_item_template = Template('''
+<li><a href="$channel_url" title="$channel_name">$channel_name</a></li>''')
+def post_subscription_manager_page(env, start_response):
+    params = env['parameters']
+    action = params['action'][0]
+
+    if action == 'add_tags':
+        _add_tags(params['channel_ids'], [tag.lower() for tag in list_from_comma_separated_tags(params['tags'][0])])
+    elif action == 'remove_tags':
+        _remove_tags(params['channel_ids'], [tag.lower() for tag in list_from_comma_separated_tags(params['tags'][0])])
+    elif action == 'unsubscribe':
+        _unsubscribe(params['channel_ids'])
+    elif action == 'unsubscribe_verify':
+        page = '''
+        <span>Are you sure you want to unsubscribe from these channels?</span>
+        <form class="subscriptions-import-form" action="/youtube.com/subscription_manager" method="POST">'''
+
+        for channel_id in params['channel_ids']:
+            page += '<input type="hidden" name="channel_ids" value="' + channel_id + '">\n'
+
+        page += '''
+            <input type="hidden" name="action" value="unsubscribe">
+            <input type="submit" value="Yes, unsubscribe">
+        </form>
+        <ul>'''
+        for channel_id, channel_name in _get_channel_names(params['channel_ids']):
+            page += unsubscribe_list_item_template.substitute(
+                channel_url = util.URL_ORIGIN + '/channel/' + channel_id,
+                channel_name = html.escape(channel_name),
+            )
+        page += '''</ul>'''
+
+        start_response('200 OK', [('Content-type','text/html'),])
+        return html_common.yt_basic_template.substitute(
+            page_title = 'Unsubscribe?',
+            style = '',
+            header = html_common.get_header(),
+            page = page,
+        ).encode('utf-8')
+    else:
+        start_response('400 Bad Request', ())
+        return b'400 Bad Request'
+
+    start_response('303 See Other', [('Location', util.URL_ORIGIN + '/subscription_manager'),] )
+    return b''
+
+
+
+sidebar_tag_item_template = Template('''
+<li>
+    <span class="sidebar-item-name">$tag_name</span>
+    <form method="POST" class="sidebar-item-refresh">
+        <input type="submit" value="Check">
+        <input type="hidden" name="action" value="refresh">
+        <input type="hidden" name="type" value="tag">
+        <input type="hidden" name="tag_name" value="$tag_name">
+    </form>
+</li>''')
+
+
+sidebar_channel_item_template = Template('''
+<li>
+    <a href="$channel_url" class="sidebar-item-name" title="$channel_name">$channel_name</a>
+    <form method="POST" class="sidebar-item-refresh">
+        <input type="submit" value="Check">
+        <input type="hidden" name="action" value="refresh">
+        <input type="hidden" name="type" value="channel">
+        <input type="hidden" name="channel_id" value="$channel_id">
+    </form>
+</li>''')
+
 def get_subscriptions_page(env, start_response):
     items_html = '''<nav class="item-grid">\n'''
 
     for item in _get_videos(30, 0):
-        print("Downloading_thumbnails: ", downloading_thumbnails)
         if item['id'] in downloading_thumbnails:
             item['thumbnail'] = util.get_thumbnail_url(item['id'])
         else:
@@ -178,10 +426,28 @@ def get_subscriptions_page(env, start_response):
         items_html += html_common.video_item_html(item, html_common.small_video_item_template)
     items_html += '''\n</nav>'''
 
+
+    tag_list_html = ''
+    for tag_name in _get_all_tags():
+        tag_list_html += sidebar_tag_item_template.substitute(tag_name = tag_name)
+
+
+    sub_list_html = ''
+    for channel_name, channel_id in _get_subscribed_channels():
+        sub_list_html += sidebar_channel_item_template.substitute(
+            channel_url = util.URL_ORIGIN + '/channel/' + channel_id,
+            channel_name = html.escape(channel_name),
+            channel_id = channel_id,
+        )
+
+
+
     start_response('200 OK', [('Content-type','text/html'),])
     return subscriptions_template.substitute(
         header = html_common.get_header(),
         items = items_html,
+        tags = tag_list_html,
+        sub_list = sub_list_html,
         page_buttons = '',
     ).encode('utf-8')
 
@@ -201,9 +467,9 @@ def post_subscriptions_page(env, start_response):
         connection = open_database()
         try:
             cursor = connection.cursor()
-            for uploader_id, channel_id in cursor.execute('''SELECT id, channel_id FROM subscribed_channels''').fetchall():
-                db_videos = ( (uploader_id, info['id'], info['title'], info['duration'], info['time_published'], info['description']) for info in _get_upstream_videos(channel_id) )
-                cursor.executemany('''INSERT OR IGNORE INTO videos (uploader_id, video_id, title, duration, time_published, description) VALUES (?, ?, ?, ?, ?, ?)''', db_videos)
+            for sql_channel_id, yt_channel_id in cursor.execute('''SELECT id, yt_channel_id FROM subscribed_channels''').fetchall():
+                db_videos = ( (sql_channel_id, info['id'], info['title'], info['duration'], info['time_published'], info['description']) for info in _get_upstream_videos(yt_channel_id) )
+                cursor.executemany('''INSERT OR IGNORE INTO videos (sql_channel_id, video_id, title, duration, time_published, description) VALUES (?, ?, ?, ?, ?, ?)''', db_videos)
 
             cursor.execute('''UPDATE subscribed_channels SET time_last_checked = ?''', ( int(time.time()), ) )
             connection.commit()