require 'cgi'
require 'sinatra'
require 'gollum'
require 'mustache/sinatra'

require 'gollum/frontend/views/layout'

module Precious
  class App < Sinatra::Base
    register Mustache::Sinatra

    dir = File.dirname(File.expand_path(__FILE__))

    # We want to serve public assets for now
    set :public_folder, "#{dir}/public"
    set :static,         true

    set :mustache, {
      # Tell mustache where the Views constant lives
      :namespace => Precious,

      # Mustache templates live here
      :templates => "#{dir}/templates",

      # Tell mustache where the views are
      :views => "#{dir}/views"
    }

    # Sinatra error handling
    configure :development, :staging do
      enable :show_exceptions, :dump_errors
      disable :raise_errors, :clean_trace
    end

    configure :test do
      enable :logging, :raise_errors, :dump_errors
    end

    get '/' do
      show_page_or_file('Home', 'README')
    end

    get %r{^/(javascript|css|images)} do
      halt 404
    end

    get %r{/(.+?)/([0-9a-f]{40})} do
      name = params[:captures][0]
      wiki = Gollum::Wiki.new(settings.gollum_path, settings.wiki_options)
      if page = wiki.page(name, params[:captures][1])
        @page = page
        @name = name
        @content = page.formatted_data
        @base_path = wiki.base_path
        mustache :page
      else
        halt 404
      end
    end

    get '/pages' do
      wiki = Gollum::Wiki.new(settings.gollum_path, settings.wiki_options)
      @results = wiki.pages
      @ref = wiki.ref
      @base_path = wiki.base_path
      mustache :pages
    end

    get '/*' do
      show_page_or_file(params[:splat].first)
    end

    def show_page_or_file(*names)
      ps = names.collect do |name|
        wiki = Gollum::Wiki.new(settings.gollum_path, settings.wiki_options)
        if page = wiki.page(name)
          @page = page
          @name = name
          @content = page.formatted_data
          @base_path = wiki.base_path
          mustache :page
        elsif file = wiki.file(name)
          content_type file.mime_type
          file.raw_data
        else
          nil
        end
      end.select {|p| p}

      ps.empty? ? nil : ps.first
    end

  end
end