307 lines
7.8 KiB
Ruby
307 lines
7.8 KiB
Ruby
class HomeController < ApplicationController
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caches_page :about, :chat, :index, :newest, :newest_by_user, :recent, :top, if: CACHE_PAGE
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# for rss feeds, load the user's tag filters if a token is passed
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before_action :find_user_from_rss_token, :only => [:index, :newest, :saved]
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before_action { @page = page }
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before_action :require_logged_in_user, :only => [:upvoted]
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def four_oh_four
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begin
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@title = "Resource Not Found"
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render :action => "404", :status => 404
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rescue ActionView::MissingTemplate
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render :html => ("<div class=\"box wide\">" <<
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"<div class=\"legend\">404</div>" <<
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"Resource not found" <<
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"</div>").html_safe, :layout => "application"
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end
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end
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def about
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begin
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@title = "About"
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render :action => "about"
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rescue ActionView::MissingTemplate
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render :html => ("<div class=\"box wide\">" <<
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"A mystery." <<
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"</div>").html_safe, :layout => "application"
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end
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end
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def chat
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begin
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@title = "Chat"
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render :action => "chat"
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rescue ActionView::MissingTemplate
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render :html => ("<div class=\"box wide\">" <<
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"<div class=\"legend\">Chat</div>" <<
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"Keep it on-site" <<
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"</div>").html_safe, :layout => "application"
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end
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end
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def privacy
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begin
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@title = "Privacy"
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render :action => "privacy"
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rescue ActionView::MissingTemplate
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render :html => ("<div class=\"box wide\">" <<
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"You apparently have no privacy." <<
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"</div>").html_safe, :layout => "application"
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end
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end
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def hidden
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@stories, @show_more = get_from_cache(hidden: true) {
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paginate stories.hidden
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}
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@heading = @title = "Hidden Stories"
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@cur_url = "/hidden"
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render :action => "index"
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end
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def index
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@stories, @show_more = get_from_cache(hottest: true) {
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paginate stories.hottest
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}
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@rss_link ||= {
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:title => "RSS 2.0",
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:href => user_token_link("/rss"),
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}
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@comments_rss_link ||= {
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:title => "Comments - RSS 2.0",
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:href => user_token_link("/comments.rss"),
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}
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@heading = @title = ""
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@cur_url = "/"
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user
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@title = "Private feed for #{@user.username}"
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render :action => "rss", :layout => false
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else
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content = Rails.cache.fetch("rss", :expires_in => (60 * 2)) {
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render_to_string :action => "rss", :layout => false
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}
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render :plain => content, :layout => false
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end
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}
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format.json { render :json => @stories }
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end
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end
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def newest
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@stories, @show_more = get_from_cache(newest: true) {
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paginate stories.newest
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}
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@heading = @title = "Newest Stories"
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@cur_url = "/newest"
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@rss_link = {
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:title => "RSS 2.0 - Newest Items",
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:href => user_token_link("/newest.rss"),
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user && params[:token].present?
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@title += " - Private feed for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def newest_by_user
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by_user = User.where(:username => params[:user]).first!
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@stories, @show_more = get_from_cache(by_user: by_user) {
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paginate stories.newest_by_user(by_user)
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}
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@heading = @title = "Newest Stories by #{by_user.username}"
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@cur_url = "/newest/#{by_user.username}"
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@newest = true
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@for_user = by_user.username
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def recent
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@stories, @show_more = get_from_cache(recent: true) {
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paginate Story.recent(@user, filtered_tag_ids)
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}
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@heading = @title = "Recent Stories"
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@cur_url = "/recent"
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# our list is unstable because upvoted stories get removed, so point at /newest.rss
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@rss_link = { :title => "RSS 2.0 - Newest Items", :href => user_token_link("/newest.rss") }
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render :action => "index"
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end
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def saved
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@stories, @show_more = get_from_cache(hidden: true) {
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paginate stories.saved
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}
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@rss_link ||= {
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:title => "RSS 2.0",
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:href => user_token_link("/saved.rss"),
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}
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@heading = @title = "Saved Stories"
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@cur_url = "/saved"
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user
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@title = "Private feed of saved stories for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def tagged
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@tag = Tag.where(:tag => params[:tag]).first!
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@stories, @show_more = get_from_cache(tag: @tag) {
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paginate stories.tagged(@tag)
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}
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@heading = @title = [@tag.tag, @tag.description].compact.join(' - ')
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@cur_url = tag_url(@tag.tag)
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@rss_link = {
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:title => "RSS 2.0 - Tagged #{@tag.tag} (#{@tag.description})",
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:href => "/t/#{@tag.tag}.rss",
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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format.json { render :json => @stories }
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end
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end
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TOP_INTVS = { "d" => "Day", "w" => "Week", "m" => "Month", "y" => "Year" }.freeze
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def top
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@cur_url = "/top"
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length = { :dur => 1, :intv => "Week" }
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if (m = params[:length].to_s.match(/\A(\d+)([#{TOP_INTVS.keys.join}])\z/))
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length[:dur] = m[1].to_i
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length[:intv] = TOP_INTVS[m[2]]
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@cur_url << "/#{params[:length]}"
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end
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@stories, @show_more = get_from_cache(top: true, length: length) {
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paginate stories.top(length)
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}
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if length[:dur] > 1
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@heading = @title = "Top Stories of the Past #{length[:dur]} " <<
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length[:intv] << "s"
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else
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@heading = @title = "Top Stories of the Past " << length[:intv]
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end
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render :action => "index"
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end
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def upvoted
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@stories, @show_more = get_from_cache(upvoted: true, user: @user) {
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paginate @user.upvoted_stories.order('votes.id DESC')
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}
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@heading = @title = "Your Upvoted Stories"
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@cur_url = "/upvoted"
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@rss_link = {
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:title => "RSS 2.0 - Your Upvoted Stories",
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:href => user_token_link("/upvoted.rss"),
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user && params[:token].present?
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@title += " - Private feed for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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private
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def filtered_tag_ids
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if @user
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@user.tag_filters.map(&:tag_id)
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else
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tags_filtered_by_cookie.map(&:id)
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end
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end
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def stories
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StoryRepository.new(@user, exclude_tags: filtered_tag_ids)
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end
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def page
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p = params[:page].to_i
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if p == 0
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p = 1
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elsif p < 0 || p > (2 ** 32)
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raise ActionController::RoutingError.new("page out of bounds")
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end
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p
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end
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def paginate(scope)
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StoriesPaginator.new(scope, page, @user).get
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end
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def get_from_cache(opts = {}, &block)
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if Rails.env.development? || @user || tags_filtered_by_cookie.any?
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yield
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else
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key = opts.merge(page: page).sort.map {|k, v| "#{k}=#{v.to_param}" }.join(" ")
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begin
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Rails.cache.fetch("stories #{key}", :expires_in => 45, &block)
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rescue Errno::ENOENT => e
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Rails.logger.error "error fetching stories #{key}: #{e}"
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yield
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end
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end
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end
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def user_token_link(url)
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@user ? "#{url}?token=#{@user.rss_token}" : url
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end
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end
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