# frozen_string_literal: true

class StageManager
  # Channel that handles channel top-level routes
  class ChannelController

    get '/' do
      redirect '/channel/list'
    end
    get '/list' do
      channels = Channel.reverse(:updated_at).all()
      erb :'channel/list', locals: {
        title: 'List of channels',
        channels: channels
      }
    end

    get '/create' do
      erb :'channel/create', locals: {
        title: 'Create new channel',
        base_directory: $conf.get('stgm.base_directory')
      }
    end
    post '/create' do
      channel = Channel.create(
        name: params[:channel_name],
        directory_path: params[:channel_dir],
        description: params[:channel_description]
      )

      # create supporting directory structure
      Dir.mkdir(channel.directory_path)
      channel.ensure_directory_structure()

      redirect "/channel/#{channel.id}"
    end

    get '/:channel_id' do
      channel = Channel.where(id: params[:channel_id]).first()
      channel_videos = channel.videos_dataset.reverse(:updated_at).limit(10).all()
      erb :'channel/view', locals: {
        title: channel.name,
        channel: channel,
        channel_videos: channel_videos
      }
    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

    post '/:channel_id/edit/:attr' do
      # find channel and temporarily save the old channel path
      channel = Channel.where(id: params[:channel_id]).first()
      attr_to_edit = params[:attr]

      if attr_to_edit == 'directory_path'
        File.rename(channel.directory_path, params[:value])
        channel.videos.each do |v|
          video_path = v.directory_path.sub(channel.directory_path, params[:value])
          v.update(directory_path: video_path)
        end
      end

      channel[attr_to_edit.to_sym] = params[:value]
      channel.save_changes()

      return 'success'
    end

  end
end