52 lines
1.4 KiB
Ruby
52 lines
1.4 KiB
Ruby
# frozen_string_literal: true
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class TopicRetriever
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def initialize(embed_url, opts = nil)
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@embed_url = embed_url
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@opts = opts || {}
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end
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def retrieve
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perform_retrieve unless (invalid_url? || retrieved_recently?)
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end
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private
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def invalid_url?
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!EmbeddableHost.url_allowed?(@embed_url.strip)
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end
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def retrieved_recently?
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# We can disable the throttle for some users, such as staff
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return false if @opts[:no_throttle]
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# Throttle other users to once every 60 seconds
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retrieved_key = "retrieved_topic"
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if Discourse.redis.setnx(retrieved_key, "1")
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Discourse.redis.expire(retrieved_key, 60)
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return false
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end
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true
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end
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def perform_retrieve
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# It's possible another process or job found the embed already. So if that happened bail out.
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return if TopicEmbed.where(embed_url: @embed_url).exists?
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if @opts[:author_username].present?
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Discourse.deprecate(
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"discourse_username parameter has been deprecated. Prefer passing author name using a <meta> tag.",
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since: "3.1.0.beta1",
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drop_from: "3.2",
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)
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end
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username =
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@opts[:author_username].presence || SiteSetting.embed_by_username.presence ||
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SiteSetting.site_contact_username.presence || Discourse.system_user.username
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TopicEmbed.import_remote(@embed_url, user: User.find_by(username_lower: username.downcase))
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end
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end
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