twitch-dl/twitchdl/twitch.py
2024-04-24 08:43:00 +02:00

480 lines
11 KiB
Python

"""
Twitch API access.
"""
import json
from typing import Any, Dict, Generator, List, Literal, Optional, Tuple, TypedDict, Union
import click
import httpx
from twitchdl import CLIENT_ID
from twitchdl.entities import Data
from twitchdl.exceptions import ConsoleError
ClipsPeriod = Literal["last_day", "last_week", "last_month", "all_time"]
VideosSort = Literal["views", "time"]
VideosType = Literal["archive", "highlight", "upload"]
class AccessToken(TypedDict):
signature: str
value: str
class User(TypedDict):
login: str
displayName: str
class Game(TypedDict):
id: str
name: str
class VideoQuality(TypedDict):
frameRate: str
quality: str
sourceURL: str
class ClipAccessToken(TypedDict):
id: str
playbackAccessToken: AccessToken
videoQualities: List[VideoQuality]
class Clip(TypedDict):
id: str
slug: str
title: str
createdAt: str
viewCount: int
durationSeconds: int
url: str
videoQualities: List[VideoQuality]
game: Game
broadcaster: User
class Video(TypedDict):
id: str
title: str
description: str
publishedAt: str
broadcastType: str
lengthSeconds: int
game: Game
creator: User
class Chapter(TypedDict):
id: str
durationMilliseconds: int
positionMilliseconds: int
type: str
description: str
subDescription: str
thumbnailURL: str
game: Game
class GQLError(click.ClickException):
def __init__(self, errors: List[str]):
message = "GraphQL query failed."
for error in errors:
message += f"\n* {error}"
super().__init__(message)
Content = Union[str, bytes]
Headers = Dict[str, str]
def authenticated_post(
url: str,
*,
json: Any = None,
content: Optional[Content] = None,
auth_token: Optional[str] = None,
):
headers = {"Client-ID": CLIENT_ID}
if auth_token is not None:
headers["authorization"] = f"OAuth {auth_token}"
response = httpx.post(url, content=content, json=json, headers=headers)
if response.status_code == 400:
data = response.json()
raise ConsoleError(data["message"])
response.raise_for_status()
return response
def gql_post(query: str):
url = "https://gql.twitch.tv/gql"
response = authenticated_post(url, content=query)
gql_raise_on_error(response)
return response.json()
def gql_query(query: str, auth_token: Optional[str] = None):
url = "https://gql.twitch.tv/gql"
response = authenticated_post(url, json={"query": query}, auth_token=auth_token)
gql_raise_on_error(response)
return response.json()
def gql_raise_on_error(response: httpx.Response):
data = response.json()
if "errors" in data:
errors = [e["message"] for e in data["errors"]]
raise GQLError(errors)
VIDEO_FIELDS = """
id
title
description
publishedAt
broadcastType
lengthSeconds
game {
id
name
}
creator {
login
displayName
}
"""
CLIP_FIELDS = """
id
slug
title
createdAt
viewCount
durationSeconds
url
videoQualities {
frameRate
quality
sourceURL
}
game {
id
name
}
broadcaster {
displayName
login
}
"""
def get_video(video_id: str) -> Optional[Video]:
query = f"""
{{
video(id: "{video_id}") {{
{VIDEO_FIELDS}
}}
}}
"""
response = gql_query(query)
return response["data"]["video"]
def get_clip(slug: str) -> Optional[Clip]:
query = f"""
{{
clip(slug: "{slug}") {{
{CLIP_FIELDS}
}}
}}
"""
response = gql_query(query)
return response["data"]["clip"]
def get_clip_access_token(slug: str) -> ClipAccessToken:
query = f"""
{{
"operationName": "VideoAccessToken_Clip",
"variables": {{
"slug": "{slug}"
}},
"extensions": {{
"persistedQuery": {{
"version": 1,
"sha256Hash": "36b89d2507fce29e5ca551df756d27c1cfe079e2609642b4390aa4c35796eb11"
}}
}}
}}
"""
response = gql_post(query.strip())
return response["data"]["clip"]
def get_channel_clips(
channel_id: str,
period: ClipsPeriod,
limit: int,
after: Optional[str] = None,
):
"""
List channel clips.
At the time of writing this:
* filtering by game name returns an error
* sorting by anything but VIEWS_DESC or TRENDING returns an error
* sorting by VIEWS_DESC and TRENDING returns the same results
* there is no totalCount
"""
query = f"""
{{
user(login: "{channel_id}") {{
clips(first: {limit}, after: "{after or ''}", criteria: {{ period: {period.upper()}, sort: VIEWS_DESC }}) {{
pageInfo {{
hasNextPage
hasPreviousPage
}}
edges {{
cursor
node {{
{CLIP_FIELDS}
}}
}}
}}
}}
}}
"""
response = gql_query(query)
user = response["data"]["user"]
if not user:
raise ConsoleError(f"Channel {channel_id} not found")
return response["data"]["user"]["clips"]
def channel_clips_generator(
channel_id: str,
period: ClipsPeriod,
limit: int,
) -> Generator[Clip, None, None]:
def _generator(clips: Data, limit: int) -> Generator[Clip, None, None]:
for clip in clips["edges"]:
if limit < 1:
return
yield clip["node"]
limit -= 1
has_next = clips["pageInfo"]["hasNextPage"]
if limit < 1 or not has_next:
return
req_limit = min(limit, 100)
cursor = clips["edges"][-1]["cursor"]
clips = get_channel_clips(channel_id, period, req_limit, cursor)
yield from _generator(clips, limit)
req_limit = min(limit, 100)
clips = get_channel_clips(channel_id, period, req_limit)
return _generator(clips, limit)
def channel_clips_generator_old(channel_id: str, period: ClipsPeriod, limit: int):
cursor = ""
while True:
clips = get_channel_clips(channel_id, period, limit, after=cursor)
if not clips["edges"]:
break
has_next = clips["pageInfo"]["hasNextPage"]
cursor = clips["edges"][-1]["cursor"] if has_next else None
yield clips, has_next
if not cursor:
break
def get_channel_videos(
channel_id: str,
limit: int,
sort: str,
type: str = "archive",
game_ids: Optional[List[str]] = None,
after: Optional[str] = None,
):
game_ids = game_ids or []
query = f"""
{{
user(login: "{channel_id}") {{
videos(
first: {limit},
type: {type.upper()},
sort: {sort.upper()},
after: "{after or ''}",
options: {{
gameIDs: {game_ids}
}}
) {{
totalCount
pageInfo {{
hasNextPage
}}
edges {{
cursor
node {{
{VIDEO_FIELDS}
}}
}}
}}
}}
}}
"""
response = gql_query(query)
if not response["data"]["user"]:
raise ConsoleError(f"Channel {channel_id} not found")
return response["data"]["user"]["videos"]
def channel_videos_generator(
channel_id: str,
max_videos: int,
sort: VideosSort,
type: VideosType,
game_ids: Optional[List[str]] = None,
) -> Tuple[int, Generator[Video, None, None]]:
game_ids = game_ids or []
def _generator(videos: Data, max_videos: int) -> Generator[Video, None, None]:
for video in videos["edges"]:
if max_videos < 1:
return
yield video["node"]
max_videos -= 1
has_next = videos["pageInfo"]["hasNextPage"]
if max_videos < 1 or not has_next:
return
limit = min(max_videos, 100)
cursor = videos["edges"][-1]["cursor"]
videos = get_channel_videos(channel_id, limit, sort, type, game_ids, cursor)
yield from _generator(videos, max_videos)
limit = min(max_videos, 100)
videos = get_channel_videos(channel_id, limit, sort, type, game_ids)
return videos["totalCount"], _generator(videos, max_videos)
def get_access_token(video_id: str, auth_token: Optional[str] = None) -> AccessToken:
query = f"""
{{
videoPlaybackAccessToken(
id: {video_id},
params: {{
platform: "web",
playerBackend: "mediaplayer",
playerType: "site"
}}
) {{
signature
value
}}
}}
"""
try:
response = gql_query(query, auth_token=auth_token)
return response["data"]["videoPlaybackAccessToken"]
except httpx.HTTPStatusError as error:
# Provide a more useful error message when server returns HTTP 401
# Unauthorized while using a user-provided auth token.
if error.response.status_code == 401:
if auth_token:
raise ConsoleError("Unauthorized. The provided auth token is not valid.")
else:
raise ConsoleError(
"Unauthorized. This video may be subscriber-only. See docs:\n"
"https://twitch-dl.bezdomni.net/commands/download.html#downloading-subscriber-only-vods"
)
raise
def get_playlists(video_id: str, access_token: AccessToken) -> str:
"""
For a given video return a playlist which contains possible video qualities.
"""
url = f"https://usher.ttvnw.net/vod/{video_id}"
response = httpx.get(
url,
params={
"nauth": access_token["value"],
"nauthsig": access_token["signature"],
"allow_audio_only": "true",
"allow_source": "true",
"player": "twitchweb",
},
)
response.raise_for_status()
return response.content.decode("utf-8")
def get_game_id(name: str):
query = f"""
{{
game(name: "{name.strip()}") {{
id
}}
}}
"""
response = gql_query(query)
game = response["data"]["game"]
if game:
return game["id"]
def get_video_chapters(video_id: str) -> List[Chapter]:
query = {
"operationName": "VideoPlayer_ChapterSelectButtonVideo",
"variables": {
"includePrivate": False,
"videoID": video_id,
},
"extensions": {
"persistedQuery": {
"version": 1,
"sha256Hash": "8d2793384aac3773beab5e59bd5d6f585aedb923d292800119e03d40cd0f9b41",
}
},
}
response = gql_post(json.dumps(query))
return list(_chapter_nodes(response["data"]["video"]["moments"]))
def _chapter_nodes(moments: Data) -> Generator[Chapter, None, None]:
for edge in moments["edges"]:
node = edge["node"]
node["game"] = node["details"]["game"]
del node["details"]
del node["moments"]
yield node