132 lines
3.5 KiB
Ruby
132 lines
3.5 KiB
Ruby
class StoryRepository
|
|
# how many days old a story can be to get on the bottom half of /recent
|
|
RECENT_DAYS_OLD = 3
|
|
# how many points a story has to have to probably get on the front page
|
|
HOT_STORY_POINTS = 5
|
|
|
|
def initialize(user, params = {})
|
|
@user = user
|
|
@params = params
|
|
end
|
|
|
|
def hottest
|
|
hottest = positive_ranked base_scope
|
|
hottest = filter_downvoted_and_tags hottest
|
|
hottest.order('hotness')
|
|
end
|
|
|
|
def hidden
|
|
hidden = base_scope
|
|
hidden = hidden.where(Story.arel_table[:id].in(hidden_arel)) if @user
|
|
hidden = filter_tags hidden, @params[:exclude_tags] if @params[:exclude_tags].try(:any?)
|
|
hidden.order('hotness')
|
|
end
|
|
|
|
def newest
|
|
newest = filter_downvoted_and_tags base_scope
|
|
newest.order('stories.created_at DESC')
|
|
end
|
|
|
|
def by_user(user)
|
|
base_scope.where(user_id: user.id)
|
|
end
|
|
|
|
def recent
|
|
stories = newest
|
|
|
|
# try to help recently-submitted stories that didn't gain traction
|
|
story_ids = []
|
|
|
|
10.times do |x|
|
|
# grab the list of stories from the past n days, shifting out popular
|
|
# stories that did gain traction
|
|
story_ids = stories.select(:id, :upvotes, :downvotes, :user_id).
|
|
where(Story.arel_table[:created_at].gt((RECENT_DAYS_OLD + x).days.ago)).
|
|
order("stories.created_at DESC").
|
|
reject{|s| s.score > HOT_STORY_POINTS }
|
|
|
|
if story_ids.length > StoriesPaginator::STORIES_PER_PAGE + 1
|
|
# keep the top half (newest stories)
|
|
keep_ids = story_ids[0 .. ((StoriesPaginator::STORIES_PER_PAGE + 1) * 0.5)]
|
|
story_ids = story_ids[keep_ids.length - 1 ... story_ids.length]
|
|
|
|
# make the bottom half a random selection of older stories
|
|
while keep_ids.length <= StoriesPaginator::STORIES_PER_PAGE + 1
|
|
story_ids.shuffle!
|
|
keep_ids.push story_ids.shift
|
|
end
|
|
|
|
stories = Story.where(:id => keep_ids)
|
|
break
|
|
end
|
|
end
|
|
|
|
stories.order('stories.created_at DESC')
|
|
end
|
|
|
|
def tagged(tag)
|
|
tagged = positive_ranked base_scope
|
|
tagged = tagged.where(
|
|
Story.arel_table[:id].in(
|
|
Tagging.arel_table.where(
|
|
Tagging.arel_table[:tag_id].eq(tag.id)
|
|
).project(
|
|
Tagging.arel_table[:story_id]
|
|
)
|
|
)
|
|
)
|
|
tagged.order('stories.created_at DESC')
|
|
end
|
|
|
|
def top(length)
|
|
top = base_scope.where("created_at >= (NOW() - INTERVAL #{length[:dur]} #{length[:intv].upcase})")
|
|
top.order '(CAST(upvotes AS integer) - CAST(downvotes AS integer)) DESC'
|
|
end
|
|
|
|
private
|
|
|
|
def base_scope
|
|
Story.unmerged.where(is_expired: false)
|
|
end
|
|
|
|
def filter_downvoted_and_tags(scope)
|
|
scope = filter_downvoted scope if @user
|
|
scope = filter_tags scope, @params[:exclude_tags] if @params[:exclude_tags].try(:any?)
|
|
scope
|
|
end
|
|
|
|
def filter_downvoted(scope)
|
|
scope.where(Story.arel_table[:id].not_in(hidden_arel))
|
|
end
|
|
|
|
def hidden_arel
|
|
if @user
|
|
hidden_arel = Vote.arel_table.where(
|
|
Vote.arel_table[:user_id].eq(@user.id)
|
|
).where(
|
|
Vote.arel_table[:vote].lteq(0)
|
|
).where(
|
|
Vote.arel_table[:comment_id].eq(nil)
|
|
).project(
|
|
Vote.arel_table[:story_id]
|
|
)
|
|
end
|
|
end
|
|
|
|
def positive_ranked(scope)
|
|
scope.where("(CAST(upvotes AS integer) - CAST(downvotes AS integer)) >= -2")
|
|
end
|
|
|
|
def filter_tags(scope, tags)
|
|
scope.where(
|
|
Story.arel_table[:id].not_in(
|
|
Tagging.arel_table.where(
|
|
Tagging.arel_table[:tag_id].in(tags)
|
|
).project(
|
|
Tagging.arel_table[:story_id]
|
|
)
|
|
)
|
|
)
|
|
end
|
|
end
|