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class SubscriptionController < ApplicationController
respond_to :html, :xml, :json
before_action :require_user, only: %i(create delete index digest)
def index
@title = "Subscriptions"
render template: "home/subscriptions"
end
# return a count of subscriptions for a given tag
def tag_count
render json: TagSelection.where(tid: params[:tid], following: true)
end
# for the current user, return whether is presently liked or not
def followed
# may be trouble: there can be multiple tags with the same name, no? We can eliminate that possibility in a migration if so.
result = TagSelection.find_by_user_id_and_tid(current_user.uid, params[:id]) if params[:type] == "tag"
result = if result.nil?
false
else
result.following
end
render json: result
end
# for the current user, register as liking the given tag
def add
if current_user && params[:type] == "tag"
tag = Tag.find_by(name: params[:name])
unless tag.present?
tag = Tag.new(
vid: 3,
name: params[:name],
description: "",
weight: 0
)
begin
tag.save!
rescue ActiveRecord::RecordInvalid
return false
end
end
case tag_selection_more_than_zero?(params[:tid])
when true
respond_to do |format|
format.html do
flash[:error] = "You are already subscribed to '#{params[:name]}'"
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
end
format.json do
message = "You already follow this user!"
render json: { status: :precondition_failed, error: message }
end
end
else
if set_following(true, params[:type], tag.tid)
if request.xhr?
message = "Started following #{params[:name]}!"
status = "200"
render json: { status: status, message: message, id: tag.tid, tagname: params[:name], url: "/tags" + "?_=" + Time.now.to_i.to_s }
else
flash[:notice] = "You are now following '#{params[:name]}'."
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
end
end
end
else
flash[:warning] = "You must be logged in to subscribe for email updates; please <a class='requireLogin'>log in</a> or <a href='/signup'>create an account</a>."
redirect_to "/tag/" + params[:name]
end
end
# for the current user, remove the like from the given tag
def delete
# assume tag, for now
if params[:type] == "tag"
id = Tag.find_by(name: params[:name]).tid
end
if id.nil?
flash[:error] = "You are not subscribed to '#{params[:name]}'"
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
else
if !set_following(false, params[:type], id) # should return false if result is that following == false
respond_with do |format|
format.html do
if request.xhr?
render json: true
else
flash[:notice] = "You have stopped following '#{params[:name]}'."
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
end
end
end
else
flash[:error] = "Something went wrong!" # silly
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
end
end
end
def digest
@wikis = current_user.content_followed_in_period(1.week.ago, Time.now)
.paginate(page: params[:page], per_page: 100)
@paginated = true
render template: "subscriptions/digest"
end
def multiple_add
if !params[:tagnames] || params[:tagnames] == ''
flash[:notice] = "Please enter tags for subscription in the url."
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
return
end
tag_list = if params[:tagnames].is_a? String
params[:tagnames].split(',')
else
params[:tagnames]
end
if current_user
if params[:type] == "tag"
tag_list.each do |t|
next unless t.length.positive?
tag = Tag.find_by(name: t)
unless tag.present?
tag = Tag.new(
vid: 3, # vocabulary id
name: t,
description: "",
weight: 0
)
begin
tag.save!
rescue ActiveRecord::RecordInvalid
flash[:error] = tag.errors.full_messages
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
return false
end
end
# test for uniqueness
unless TagSelection.where(following: true, user_id: current_user.uid, tid: tag.tid).length.positive?
# Successfully we have added subscription
set_following(true, params[:type], tag.tid)
end
end
respond_with do |format|
format.html do
if request.xhr?
render json: true
else
flash[:notice] = "You are now following '#{params[:tagnames]}'."
redirect_to "/subscriptions" + "?_=" + Time.now.to_i.to_s
end
end
end
end
else
flash[:warning] = "You must be logged in to subscribe for email updates!"
redirect_to "/login?return_to=" + request.fullpath
end
end
private
def tag_selection_more_than_zero?(tag_id)
TagSelection.where(following: true, user_id: current_user.uid, tid: tag_id).length.positive?
end
def set_following(value, type, id)
# add swtich statement for different types: tag, node, user
if type == 'tag' && Tag.find_by(tid: id)
# Create the entry if it isn't already created.
# assume tag, for now:
subscription = TagSelection.where(user_id: current_user.uid,
tid: id).first_or_create
subscription.following = value
# Check if the value changed.
if subscription.following_changed?
# tag = Tag.find(id)
# we have to implement caching for tags if we want to adapt this code:
# if subscription.following
# node.cached_likes = node.cached_likes + 1
# else
# node.cached_likes = node.cached_likes - 1
# end
# Save the changes.
# ActiveRecord::Base.transaction do
# tag.save!
subscription.save!
# end
end
subscription.following
else
flash.now[:error] = "There was an error."
false
end
end
end
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