Files
gander/web_server/utils/stream_utils.py

230 lines
8.5 KiB
Python

from database.database import Database
from typing import Optional
import os, subprocess
from typing import Optional, List
from time import sleep
from utils.path_manager import PathManager
def get_streamer_live_status(user_id: int):
"""
Returns boolean on whether the given streamer is live
"""
with Database() as db:
is_live = db.fetchone("""
SELECT is_live
FROM users
WHERE user_id = ?;
""", (user_id,))
return is_live
def get_followed_live_streams(user_id: int) -> Optional[List[dict]]:
"""
Searches for streamers who the user followed which are currently live
Returns a list of live streams with the streamer's user id, stream title, and number of viewers
"""
with Database() as db:
live_streams = db.fetchall("""
SELECT users.user_id, streams.title, streams.num_viewers, users.username
FROM streams JOIN users
ON streams.user_id = users.user_id
WHERE users.user_id IN
(SELECT followed_id FROM follows WHERE user_id = ?)
AND users.is_live = 1;
""", (user_id,))
return live_streams
def get_current_stream_data(user_id: int) -> Optional[dict]:
"""
Returns data of the most recent stream by a streamer
"""
with Database() as db:
most_recent_stream = db.fetchone("""
SELECT s.user_id, u.username, s.title, s.start_time, s.num_viewers, c.category_name, c.category_id
FROM streams AS s
JOIN categories AS c ON s.category_id = c.category_id
JOIN users AS u ON s.user_id = u.user_id
WHERE u.user_id = ?
""", (user_id,))
return most_recent_stream
def end_user_stream(stream_key, user_id, username):
"""
Utility function to end a user's stream
Parameters:
stream_key: The stream key of the user
user_id: The ID of the user
username: The username of the user
Returns:
bool: True if stream was ended successfully, False otherwise
"""
from flask import current_app
from datetime import datetime
from dateutil import parser
from celery_tasks.streaming import combine_ts_stream
from utils.path_manager import PathManager
path_manager = PathManager()
print(f"Ending stream for user {username} (ID: {user_id})", flush=True)
if not stream_key or not user_id or not username:
print("Cannot end stream - missing required information", flush=True)
return False
try:
# Open database connection
with Database() as db:
# Get stream info
stream_info = db.fetchone("""SELECT *
FROM streams
WHERE user_id = ?""", (user_id,))
# If user is not streaming, just return
if not stream_info:
print(f"User {username} (ID: {user_id}) is not streaming", flush=True)
return True, "User is not streaming"
# Remove stream from database
db.execute("""DELETE FROM streams
WHERE user_id = ?""", (user_id,))
# Move stream to vod table
stream_length = int(
(datetime.now() - parser.parse(stream_info.get("start_time"))).total_seconds())
db.execute("""INSERT INTO vods (user_id, title, datetime, category_id, length, views)
VALUES (?, ?, ?, ?, ?, ?)""", (user_id,
stream_info.get("title"),
stream_info.get("start_time"),
stream_info.get("category_id"),
stream_length,
0))
vod_id = db.get_last_insert_id()
# Set user as not streaming
db.execute("""UPDATE users
SET is_live = 0
WHERE user_id = ?""", (user_id,))
# Queue task to combine TS files into MP4
combine_ts_stream.delay(
path_manager.get_stream_path(username),
path_manager.get_vods_path(username),
vod_id,
path_manager.get_vod_thumbnail_file_path(username, vod_id)
)
print(f"Stream ended for user {username} (ID: {user_id})", flush=True)
return True, "Stream ended successfully"
except Exception as e:
print(f"Error ending stream for user {username}: {str(e)}", flush=True)
return False, f"Error ending stream: {str(e)}"
def get_category_id(category_name: str) -> Optional[int]:
"""
Returns the category_id given a category name
"""
with Database() as db:
data = db.fetchone("""
SELECT category_id
FROM categories
WHERE category_name = ?;
""", (category_name,))
return data['category_id'] if data else None
def get_custom_thumbnail_status(user_id: int) -> Optional[dict]:
"""
Returns the custom thumbnail status of a streamer
"""
with Database() as db:
custom_thumbnail = db.fetchone("""
SELECT custom_thumbnail
FROM streams
WHERE user_id = ?;
""", (user_id,))
return custom_thumbnail
def get_vod(vod_id: int) -> dict:
"""
Returns data of a streamers vod
"""
with Database() as db:
vod = db.fetchone("""SELECT vods.*, username, category_name FROM vods JOIN users ON vods.user_id = users.user_id JOIN categories ON vods.category_id = categories.category_id WHERE vod_id = ?;""", (vod_id,))
return vod
def get_latest_vod(user_id: int):
"""
Returns data of the most recent stream by a streamer
"""
with Database() as db:
latest_vod = db.fetchone("""SELECT vods.*, username, category_name FROM vods JOIN users ON vods.user_id = users.user_id JOIN categories ON vods.category_id = categories.category_id WHERE vods.user_id = ? ORDER BY vod_id DESC;""", (user_id,))
return latest_vod
def get_user_vods(user_id: int):
"""
Returns data of all vods by a streamer
"""
with Database() as db:
vods = db.fetchall("""SELECT vods.*, username, category_name FROM vods JOIN users ON vods.user_id = users.user_id JOIN categories ON vods.category_id = categories.category_id WHERE vods.user_id = ? ORDER BY vod_id DESC;""", (user_id,))
return vods
def generate_thumbnail(stream_file: str, thumbnail_file: str) -> None:
"""
Generates the thumbnail of a stream
"""
thumbnail_command = [
"ffmpeg",
"-y",
"-i",
f"{stream_file}",
"-vframes",
"1",
"-q:v",
"2",
f"{thumbnail_file}"
]
try:
subprocess.run(thumbnail_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=True)
print(f"Thumbnail generated for {stream_file}")
except subprocess.CalledProcessError as e:
print(f"No information available for {stream_file}, aborting thumbnail generation")
def remove_hls_files(stream_path: str) -> None:
"""
Removes all hls files in a stream directory
"""
for file in os.listdir(stream_path):
if file.endswith(".ts") or file.endswith(".m3u8"):
os.remove(os.path.join(stream_path, file))
def get_stream_tags(user_id: int) -> Optional[List[str]]:
"""
Given a stream return tags associated with the user's stream
"""
with Database() as db:
tags = db.fetchall("""
SELECT tag_name
FROM tags
JOIN stream_tags ON tags.tag_id = stream_tags.tag_id
WHERE user_id = ?;
""", (user_id,))
return tags
def get_vod_tags(vod_id: int):
"""
Given a vod return tags associated with the vod
"""
with Database() as db:
tags = db.fetchall("""
SELECT tag_name
FROM tags
JOIN vod_tags ON tags.tag_id = vod_tags.tag_id
WHERE vod_id = ?;
""", (vod_id,))
return tags