class PostsController < ApplicationController
  include BlogUrlHelpers

	respond_to :html, :json, :rss

  before_action :load_blog
  before_action :load_page_number, :only => [:index, :archive, :category]
  before_action :find_post, :only => [:show, :create_comment]

  def index
    @posts = SpudPost.for_user(current_user).visible.for_blog(params[:blog_key]).ordered.paginate(:page => @page_number, :per_page => Spud::Blog.config.posts_per_page)
    if params[:search]
      @posts = @posts.search(params[:search])
    end
    respond_with @posts do |format|
      format.html{
        render view_for_action('index')
      }
    end
  end

  # The sole purpose of this action is to redirect from a POST to an seo-friendly url
  def filter
    if !params[:category_url_name].blank? && !params[:archive_date].blank?
      redirect_to post_category_archive_path(params[:category_url_name], params[:archive_date])
    elsif !params[:category_url_name].blank?
      redirect_to post_category_path(params[:category_url_name])
    elsif !params[:archive_date].blank?
      redirect_to post_archive_path(params[:archive_date])
    else
      redirect_to posts_path
    end
  end

  def category
    if @post_category = SpudPostCategory.find_by_url_name(params[:category_url_name])
      @posts = @post_category.posts.for_user(current_user).visible.for_blog(params[:blog_key]).from_archive(params[:archive_date]).paginate(:page => @page_number, :per_page => Spud::Blog.config.posts_per_page)
    else
      redirect_to posts_path
      return
    end
    respond_with @posts do |format|
      format.html { render view_for_action 'index' }
    end
  end

  def archive
    @posts = SpudPost.for_user(current_user).visible.for_blog(params[:blog_key]).from_archive(params[:archive_date]).paginate(:page => @page_number, :per_page => Spud::Blog.config.posts_per_page)
    respond_with @posts do |format|
      format.html { render view_for_action 'index' }
    end
  end

  def show
    if @post.comments_enabled
      @comment = SpudPostComment.new()
    end
  	respond_with @post do |format|
      format.html { render view_for_action 'show' }
    end
  end

  def create_comment
    unless params[:comment_validation].blank? # trap spam bots
      render :nothing => true
      return
    end
    @comment = @post.comments.new(comment_params)
    @comment.user_agent = request.env["HTTP_USER_AGENT"]
    @comment.user_ip = request.remote_ip
    @comment.referrer = request.referrer
    @comment.approved = Spud::Blog.default_comment_approval
    @comment.permalink = post_path(@post.url_name)
    if @comment.save
      if @comment.approved?
        flash[:notice] = 'Your comment has been posted.'
      else
        flash[:notice] = 'Your comment has been saved and will appear after being reviewed by an administrator.'
      end
      @comment = SpudPostComment.new()
    end
    respond_with @comment do |format|
    	format.html { render view_for_action 'show' }
    end
  end

private

  def find_post
    @post = SpudPost.for_user(current_user).for_blog(params[:blog_key]).where(:url_name => params[:id]).first
		if @post.blank? || @post.is_private?
			raise Spud::NotFoundError.new(:item => 'post')
		end
  end

  def comment_params
    params.require(:spud_post_comment).permit(:author, :content)
  end

  def load_page_number
    page = 1
    if params[:page].present?
      page = params[:page].to_i
      if page.to_s != params[:page].to_s
        if(page > 1)
          redirect_to posts_path(:page => page), :status => :moved_permanently and return
        else
          redirect_to posts_path(:page => nil), :status => :moved_permanently and return
        end
      end
    end
    @page_number = page
  end

  def load_blog
    @config = SpudBlogConfig.find(params[:blog_key])
    if @config.blank?
      raise Spud::NotFoundError(:item => 'blog')
      return false
    else
      self.class.layout(@config.layout)
    end
  end

  def view_for_action(action)
    if File.exist?(Rails.root.join("app/views/#{@config.key}/#{action}.html.erb"))
      return "#{@config.key}/#{action}"
    else
      return action
    end
  end

end