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@ -4,28 +4,116 @@
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# Hard-coded constants required by the API
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# Hard-coded constants required by the API
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HARDCODED_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
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HARDCODED_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
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HARDCODED_CLIENT_VERS = "2.20210318.08.00"
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HARDCODED_CLIENT_VERS = "2.20210330.08.00"
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def request_youtube_api_browse(continuation)
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####################################################################
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# make_youtube_api_context(region)
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#
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# Return, as a Hash, the "context" data required to request the
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# youtube API endpoints.
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#
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def make_youtube_api_context(region : String | Nil) : Hash
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return {
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"client" => {
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"hl" => "en",
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"gl" => region || "US", # Can't be empty!
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"clientName" => "WEB",
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"clientVersion" => HARDCODED_CLIENT_VERS,
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},
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}
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end
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####################################################################
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# request_youtube_api_browse(continuation)
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# request_youtube_api_browse(browse_id, params)
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#
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# Requests the youtubei/v1/browse endpoint with the required headers
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# and POST data in order to get a JSON reply in english US that can
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# be easily parsed.
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#
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# The requested data can either be:
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#
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# - A continuation token (ctoken). Depending on this token's
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# contents, the returned data can be comments, playlist videos,
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# search results, channel community tab, ...
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#
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# - A playlist ID (parameters MUST be an empty string)
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#
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def request_youtube_api_browse(continuation : String)
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# JSON Request data, required by the API
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# JSON Request data, required by the API
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data = {
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data = {
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"context": {
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"context" => make_youtube_api_context("US"),
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"client": {
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"continuation" => continuation,
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"hl": "en",
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}
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"gl": "US",
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"clientName": "WEB",
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return _youtube_api_post_json("/youtubei/v1/browse", data)
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"clientVersion": HARDCODED_CLIENT_VERS,
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end
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},
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},
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def request_youtube_api_browse(browse_id : String, params : String)
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"continuation": continuation,
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# JSON Request data, required by the API
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data = {
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"browseId" => browse_id,
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"context" => make_youtube_api_context("US"),
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}
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}
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# Send the POST request and return result
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# Append the additionnal parameters if those were provided
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# (this is required for channel info, playlist and community, e.g)
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if params != ""
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data["params"] = params
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end
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return _youtube_api_post_json("/youtubei/v1/browse", data)
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end
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####################################################################
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# request_youtube_api_search(search_query, params, region)
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#
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# Requests the youtubei/v1/search endpoint with the required headers
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# and POST data in order to get a JSON reply. As the search results
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# vary depending on the region, a region code can be specified in
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# order to get non-US results.
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#
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# The requested data is a search string, with some additional
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# paramters, formatted as a base64 string.
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#
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def request_youtube_api_search(search_query : String, params : String, region = nil)
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# JSON Request data, required by the API
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data = {
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"query" => URI.encode_www_form(search_query),
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"context" => make_youtube_api_context(region),
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"params" => params,
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}
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return _youtube_api_post_json("/youtubei/v1/search", data)
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end
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####################################################################
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# _youtube_api_post_json(endpoint, data)
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#
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# Internal function that does the actual request to youtube servers
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# and handles errors.
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#
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# The requested data is an endpoint (URL without the domain part)
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# and the data as a Hash object.
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#
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def _youtube_api_post_json(endpoint, data)
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# Send the POST request and parse result
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response = YT_POOL.client &.post(
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response = YT_POOL.client &.post(
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"/youtubei/v1/browse?key=#{HARDCODED_API_KEY}",
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"#{endpoint}?key=#{HARDCODED_API_KEY}",
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headers: HTTP::Headers{"content-type" => "application/json"},
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headers: HTTP::Headers{"content-type" => "application/json; charset=UTF-8"},
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body: data.to_json
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body: data.to_json
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)
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)
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return response.body
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initial_data = JSON.parse(response.body).as_h
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# Error handling
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if initial_data.has_key?("error")
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code = initial_data["error"]["code"]
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message = initial_data["error"]["message"].to_s.sub(/(\\n)+\^$/, "")
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raise InfoException.new("Could not extract JSON. Youtube API returned \
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error #{code} with message:<br>\"#{message}\"")
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end
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return initial_data
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end
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end
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