discourse/lib/onebox/engine/discourse_local_onebox.rb

102 lines
3.4 KiB
Ruby

module Onebox
module Engine
class DiscourseLocalOnebox
include Engine
# Use this onebox before others
def self.priority
1
end
def self.===(other)
url = other.to_s
return false unless url[Discourse.base_url]
route = Discourse.route_for(url)
!!(route[:controller] =~ /topics|uploads/)
rescue ActionController::RoutingError
false
end
def to_html
uri = URI(@url)
path = uri.path || ""
route = Discourse.route_for(uri)
case route[:controller]
when "uploads" then upload_html(path)
when "topics" then topic_html(route)
end
end
private
def upload_html(path)
case File.extname(path)
when /^\.(mov|mp4|webm|ogv)$/i
"<video width='100%' height='100%' controls><source src='#{@url}'><a href='#{@url}'>#{@url}</a></video>"
when /^\.(mp3|ogg|wav|m4a)$/i
"<audio controls><source src='#{@url}'><a href='#{@url}'>#{@url}</a></audio>"
end
end
def topic_html(route)
link = "<a href='#{@url}'>#{@url}</a>"
source_topic_id = @url[/[&?]source_topic_id=(\d+)/, 1].to_i
source_topic = Topic.find_by(id: source_topic_id) if source_topic_id > 0
if route[:post_number].present? && route[:post_number].to_i > 1
post = Post.find_by(topic_id: route[:topic_id], post_number: route[:post_number])
return link unless can_see_post?(post, source_topic)
topic = post.topic
slug = Slug.for(topic.title)
excerpt = post.excerpt(SiteSetting.post_onebox_maxlength)
excerpt.gsub!(/[\r\n]+/, " ")
excerpt.gsub!("[/quote]", "[quote]") # don't break my quote
quote = "[quote=\"#{post.user.username}, topic:#{topic.id}, slug:#{slug}, post:#{post.post_number}\"]\n#{excerpt}\n[/quote]"
args = {}
args[:topic_id] = source_topic_id if source_topic_id > 0
PrettyText.cook(quote, args)
else
topic = Topic.find_by(id: route[:topic_id])
return link unless can_see_topic?(topic, source_topic)
first_post = topic.ordered_posts.first
args = {
topic_id: topic.id,
avatar: PrettyText.avatar_img(topic.user.avatar_template, "tiny"),
original_url: @url,
title: PrettyText.unescape_emoji(CGI::escapeHTML(topic.title)),
category_html: CategoryBadge.html_for(topic.category),
quote: first_post.excerpt(SiteSetting.post_onebox_maxlength),
}
template = File.read("#{Rails.root}/lib/onebox/templates/discourse_topic_onebox.hbs")
Mustache.render(template, args)
end
end
def can_see_post?(post, source_topic)
return false if post.nil? || post.hidden || post.trashed? || post.topic.nil?
Guardian.new.can_see_post?(post) || same_category?(post.topic.category, source_topic)
end
def can_see_topic?(topic, source_topic)
return false if topic.nil? || topic.trashed? || topic.private_message?
Guardian.new.can_see_topic?(topic) || same_category?(topic.category, source_topic)
end
def same_category?(category, source_topic)
source_topic.try(:category_id) == category.try(:id)
end
end
end
end