Multiple youtube_api.cr helper fixes

Add documentation
Bump web client version string
Add charset=UTF-8 to the 'content-type' header
Parse JSON and return it as a Hash
Handle API error messages
This commit is contained in:
Samantaz Fox 2021-04-01 02:36:43 +00:00
parent 8bbb016fa4
commit 43bd331e48
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4 changed files with 36 additions and 38 deletions

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@ -229,22 +229,8 @@ def fetch_channel(ucid, db, pull_all_videos = true, locale = nil)
page = 1 page = 1
LOGGER.trace("fetch_channel: #{ucid} : Downloading channel videos page") LOGGER.trace("fetch_channel: #{ucid} : Downloading channel videos page")
response_body = get_channel_videos_response(ucid, page, auto_generated: auto_generated) initial_data = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
videos = extract_videos(initial_data, author, ucid)
videos = [] of SearchVideo
begin
initial_data = JSON.parse(response_body)
raise InfoException.new("Could not extract channel JSON") if !initial_data
LOGGER.trace("fetch_channel: #{ucid} : Extracting videos from channel videos page initial_data")
videos = extract_videos(initial_data.as_h, author, ucid)
rescue ex
if response_body.includes?("To continue with your YouTube experience, please fill out the form below.") ||
response_body.includes?("https://www.google.com/sorry/index")
raise InfoException.new("Could not extract channel info. Instance is likely blocked.")
end
raise ex
end
LOGGER.trace("fetch_channel: #{ucid} : Extracting videos from channel RSS feed") LOGGER.trace("fetch_channel: #{ucid} : Extracting videos from channel RSS feed")
rss.xpath_nodes("//feed/entry").each do |entry| rss.xpath_nodes("//feed/entry").each do |entry|
@ -304,10 +290,8 @@ def fetch_channel(ucid, db, pull_all_videos = true, locale = nil)
ids = [] of String ids = [] of String
loop do loop do
response_body = get_channel_videos_response(ucid, page, auto_generated: auto_generated) initial_data = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
initial_data = JSON.parse(response_body) videos = extract_videos(initial_data, author, ucid)
raise InfoException.new("Could not extract channel JSON") if !initial_data
videos = extract_videos(initial_data.as_h, author, ucid)
count = videos.size count = videos.size
videos = videos.map { |video| ChannelVideo.new({ videos = videos.map { |video| ChannelVideo.new({
@ -358,8 +342,7 @@ end
def fetch_channel_playlists(ucid, author, continuation, sort_by) def fetch_channel_playlists(ucid, author, continuation, sort_by)
if continuation if continuation
response_json = request_youtube_api_browse(continuation) response_json = request_youtube_api_browse(continuation)
result = JSON.parse(response_json) continuationItems = response_json["onResponseReceivedActions"]?
continuationItems = result["onResponseReceivedActions"]?
.try &.[0]["appendContinuationItemsAction"]["continuationItems"] .try &.[0]["appendContinuationItemsAction"]["continuationItems"]
return [] of SearchItem, nil if !continuationItems return [] of SearchItem, nil if !continuationItems
@ -964,21 +947,16 @@ def get_60_videos(ucid, author, page, auto_generated, sort_by = "newest")
videos = [] of SearchVideo videos = [] of SearchVideo
2.times do |i| 2.times do |i|
response_json = get_channel_videos_response(ucid, page * 2 + (i - 1), auto_generated: auto_generated, sort_by: sort_by) initial_data = get_channel_videos_response(ucid, page * 2 + (i - 1), auto_generated: auto_generated, sort_by: sort_by)
initial_data = JSON.parse(response_json) videos.concat extract_videos(initial_data, author, ucid)
break if !initial_data
videos.concat extract_videos(initial_data.as_h, author, ucid)
end end
return videos.size, videos return videos.size, videos
end end
def get_latest_videos(ucid) def get_latest_videos(ucid)
response_json = get_channel_videos_response(ucid) initial_data = get_channel_videos_response(ucid)
initial_data = JSON.parse(response_json)
return [] of SearchVideo if !initial_data
author = initial_data["metadata"]?.try &.["channelMetadataRenderer"]?.try &.["title"]?.try &.as_s author = initial_data["metadata"]?.try &.["channelMetadataRenderer"]?.try &.["title"]?.try &.as_s
items = extract_videos(initial_data.as_h, author, ucid)
return items return extract_videos(initial_data, author, ucid)
end end

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@ -4,8 +4,18 @@
# Hard-coded constants required by the API # Hard-coded constants required by the API
HARDCODED_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8" HARDCODED_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
HARDCODED_CLIENT_VERS = "2.20210318.08.00" HARDCODED_CLIENT_VERS = "2.20210330.08.00"
####################################################################
# request_youtube_api_browse(continuation)
#
# Requests the youtubei/vi/browse endpoint with the required headers
# to get JSON in en-US (english US).
#
# The requested data is a continuation token (ctoken). Depending on
# this token's contents, the returned data can be comments, playlist
# videos, search results, channel community tab, ...
#
def request_youtube_api_browse(continuation) def request_youtube_api_browse(continuation)
# JSON Request data, required by the API # JSON Request data, required by the API
data = { data = {
@ -20,12 +30,23 @@ def request_youtube_api_browse(continuation)
"continuation": continuation, "continuation": continuation,
} }
# Send the POST request and return result # Send the POST request and parse result
response = YT_POOL.client &.post( response = YT_POOL.client &.post(
"/youtubei/v1/browse?key=#{HARDCODED_API_KEY}", "/youtubei/v1/browse?key=#{HARDCODED_API_KEY}",
headers: HTTP::Headers{"content-type" => "application/json"}, headers: HTTP::Headers{"content-type" => "application/json; charset=UTF-8"},
body: data.to_json body: data.to_json
) )
return response.body initial_data = JSON.parse(response.body).as_h
# Error handling
if initial_data.has_key?("error")
code = initial_data["error"]["code"]
message = initial_data["error"]["message"].to_s.sub(/(\\n)+\^$/, "")
raise InfoException.new("Could not extract JSON. Youtube API returned \
error #{code} with message:<br>\"#{message}\"")
end
return initial_data
end end

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@ -451,7 +451,7 @@ def get_playlist_videos(db, playlist, offset, locale = nil, continuation = nil)
offset = (offset / 100).to_i64 * 100_i64 offset = (offset / 100).to_i64 * 100_i64
ctoken = produce_playlist_continuation(playlist.id, offset) ctoken = produce_playlist_continuation(playlist.id, offset)
initial_data = JSON.parse(request_youtube_api_browse(ctoken)).as_h initial_data = request_youtube_api_browse(ctoken)
else else
response = YT_POOL.client &.get("/playlist?list=#{playlist.id}&gl=US&hl=en") response = YT_POOL.client &.get("/playlist?list=#{playlist.id}&gl=US&hl=en")
initial_data = extract_initial_data(response.body) initial_data = extract_initial_data(response.body)

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@ -246,8 +246,7 @@ def channel_search(query, page, channel)
continuation = produce_channel_search_continuation(ucid, query, page) continuation = produce_channel_search_continuation(ucid, query, page)
response_json = request_youtube_api_browse(continuation) response_json = request_youtube_api_browse(continuation)
result = JSON.parse(response_json) continuationItems = response_json["onResponseReceivedActions"]?
continuationItems = result["onResponseReceivedActions"]?
.try &.[0]["appendContinuationItemsAction"]["continuationItems"] .try &.[0]["appendContinuationItemsAction"]["continuationItems"]
return 0, [] of SearchItem if !continuationItems return 0, [] of SearchItem if !continuationItems