Added channel and video edit pages; added link back to channel from video view page

lib/routes/channel.rb

@@ -38,4 +38,36 @@ namespace '/channel' do
     }
   end
 
+  get '/:channel_id/edit' do
+    channel = Channel.where(id: params[:channel_id]).first()
+    erb :'channel/edit', :locals => {
+      :title => "Editing: #{channel.name}",
+      :channel => channel
+    }
+  end
+  post '/:channel_id/edit' do
+    # get channel model and save old directory path
+    channel = Channel.where(id: params[:channel_id]).first()
+    old_path = channel.directory_path
+
+    # edit channel model
+    channel.update(
+      name: params[:channel_name],
+      directory_path: params[:channel_dir],
+      description: params[:channel_description]
+    )
+
+    # edit associate videos' directory paths
+    channel.videos.each do |v|
+      video_path = v.directory_path.sub(old_path, channel.directory_path)
+      v.update(directory_path: video_path)
+    end
+
+    # rename channel directory
+    File.rename(old_path, channel.directory_path)
+
+    # redirect user
+    redirect "/channel/#{channel.id}"
+  end
+
 end

lib/routes/video.rb

@@ -48,4 +48,41 @@ namespace '/video' do
     }
   end
 
+  get '/:video_id/edit' do
+    video = Video.where(id: params[:video_id]).first()
+    channels = Channel.all()
+    erb :'video/edit', :locals => {
+      :title => "Editing: #{video.name}",
+      :video => video,
+      :channels => channels
+    }
+  end
+  post '/:video_id/edit' do
+    channel = Channel.where(id: params[:video_channel]).first()
+    video_serial = params[:video_serial].to_s.rjust(4, '0')
+    video_path = File.join(
+      channel.directory_path,
+      "##{video_serial} - #{params[:video_name]}"
+    )
+
+    # find video and temporarily save the old video path
+    video = Video.where(id: params[:video_id]).first()
+    old_path = video.directory_path
+
+    # edit video attributes
+    video.update(
+      name: params[:video_name],
+      serial: params[:video_serial],
+      channel_id: params[:video_channel],
+      directory_path: video_path,
+      description: params[:video_description]
+    )
+
+    # rename the video project directory
+    File.rename(old_path, video_path)
+
+    # redirect the user
+    redirect "/video/#{video.id}"
+  end
+
 end