added legacy api for posts

app/controllers/legacy_controller.rb

@@ -0,0 +1,11 @@
+class LegacyController < ApplicationController
+  def posts
+    @post_set = PostSets::Post.new(tag_query, params[:page])
+    @posts = @post_set.posts
+  end
+
+private
+  def tag_query
+    params[:tags] || (params[:post] && params[:post][:tags])
+  end
+end

app/models/post.rb

@@ -1058,6 +1058,42 @@ class Post < ActiveRecord::Base
       options[:except] += hidden_attributes
       super(options, &block)
     end
+    
+    def to_legacy_json
+      return {
+        "has_comments" => last_commented_at.present?,
+        "parent_id" => parent_id,
+        "status" => status,
+        "has_children" => has_children?,
+        "created_at" => created_at.to_formatted_s(:db),
+        "md5" => md5,
+        "has_notes" => last_noted_at.present?,
+        "rating" => rating,
+        "author" => uploader.name,
+        "creator_id" => uploader_id,
+        "width" => image_width,
+        "source" => source,
+        "preview_url" => preview_file_url,
+        "score" => score,
+        "tags" => tag_string,
+        "height" => image_height,
+        "file_size" => file_size,
+        "id" => id,
+        "file_url" => file_url
+      }.to_json
+    end
+    
+    def status
+      if is_pending?
+        "pending"
+      elsif is_deleted?
+        "deleted"
+      elsif is_flagged?
+        "flagged"
+      else
+        "active"
+      end
+    end
   end
   
   include FileMethods

app/views/legacy/posts.json.erb

@@ -0,0 +1 @@
+[<%= @posts.map {|x| x.to_legacy_json}.join(", ").html_safe %>]

app/views/legacy/posts.xml.erb

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<posts>
+  <% @posts.each do |post| %>
+	  <post preview_url="<%= post.preview_file_url %>" file_size="<%= post.file_size %>" status="<%= post.status %>" score="<%= post.score %>" file_url="<%= post.file_url %>" height="<%= post.image_height %>" has_comments="<%= post.last_commented_at.present? %>" tags="<%= post.tag_string %>" source="<%= post.source %>" parent_id="<%= post.parent_id %>" created_at="<%= post.created_at.to_formatted_s(:db) %>" rating="<%= post.rating %>" has_notes="<%= post.last_noted_at.present? %>" id="<%= post.id %>" md5="<%= post.md5 %>" has_children="<%= post.has_children? %>" creator_id="<%= post.uploader_id %>" author="<%= post.uploader.name %>" width="<%= post.image_width %>"/>
+	<% end %>
+</posts>

config/routes.rb

@@ -205,7 +205,9 @@ Danbooru::Application.routes.draw do
   match "/pool/history/:id" => redirect("/pool_versions?search[pool_id]=%{id}")
   match "/pool/recent_changes" => redirect("/pool_versions")
   
-  match "/post/index" => redirect {|params, req| "/posts?tags=#{params[:tags]}&page=#{req.params[:page]}"}
+  match "/post/index.xml", :controller => "legacy", :action => "posts", :format => "xml"
+  match "/post/index.json", :controller => "legacy", :action => "posts", :format => "json"
+  match "/post/index" => redirect {|params, req| "/posts?tags=#{req.params[:tags]}&page=#{req.params[:page]}"}
   match "/post" => redirect {|params, req| "/posts?tags=#{req.params[:tags]}&page=#{req.params[:page]}"}
   match "/post/upload" => redirect("/uploads/new")
   match "/post/moderate" => redirect("/moderator/post/queue")