require 'fileutils'

class StageManager
  class VideoController

    get '/' do
      redirect '/video/list'
    end
    get '/list' do
      videos = Video.reverse(:updated_at).all()
      erb :'video/list', :locals => {
        :title => 'List of videos',
        :videos => videos
      }
    end

    get '/create' do
      # check if there's a channel specified
      selected_channel = false
      if params.has_key?(:channel)
        selected_channel = params[:channel].to_i()
      end

      channels = Channel.all()
      erb :'video/create', :locals => {
        :title => 'Create new video',
        :channels => channels,
        :selected_channel => selected_channel
      }
    end
    post '/create' 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,
        'Main',
        "##{video_serial} - #{params[:video_name]}"
      )

      video = Video.create(
        serial: params[:video_serial],
        name: params[:video_name],
        channel_id: params[:video_channel],
        directory_path: video_path,
        description: params[:video_description],
        script: "# Introduction\n\n# Body\n\n# Conclusions"
      )

      # create supporting directory structure
      Dir.mkdir(video_path)
      video.ensureDirectoryStructure()

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

    get '/:video_id' do
      video = Video.where(id: params[:video_id]).first()
      erb :'video/view', :locals => {
        :title => video.name,
        :video => video
      }
    end

    get '/:video_id/script' do
      video = Video.where(id: params[:video_id]).first()
      erb :'video/script', :locals => {
        :title => "Script: #{video.name}",
        :video => video
      }
    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,
        'Main',
        "##{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

    post '/:video_id/edit/:attr' do
      # find video and temporarily save the old video path
      video = Video.where(id: params[:video_id]).first()
      attrToEdit = params[:attr]

      # if we update the video's serial, we need to also update the directory path
      if attrToEdit == 'serial'
        old_path = video.directory_path
        new_path = video.directory_path.sub("##{video.serial}", "##{params[:value]}")
        File.rename(old_path, new_path)
        video[:directory_path] = new_path
      end

      video[attrToEdit.to_sym] = params[:value]
      video.save()

      return "success"
    end

    get '/:video_id/archive' do
      # find the video
      video = Video.where(id: params[:video_id]).first()
      video_base = File.basename(video.directory_path)

      # move project to channel's archive
      archive_dir = File.join(
        video.channel.directory_path,
        'Archive',
        video_base
      )
      FileUtils.mv(video.directory_path, archive_dir)

      # mark the video as archived and update directory
      video.update(
        directory_path: archive_dir,
        archived: true
      )

      redirect '/video/' + video.id.to_s()
    end
    get '/:video_id/unarchive' do
      # find the video
      video = Video.where(id: params[:video_id]).first()
      video_base = File.basename(video.directory_path)

      # move project to channel's archive
      active_dir = File.join(
        video.channel.directory_path,
        'Main',
        video_base
      )
      FileUtils.mv(video.directory_path, active_dir)

      # mark the video as archived and update directory
      video.update(
        directory_path: active_dir,
        archived: false
      )

      redirect '/video/' + video.id.to_s()
    end

    get '/:video_id/edit/script' do
      video = Video.where(id: params[:video_id]).first()
      erb :'video/edit-script', :locals => {
        :title => "Editing script: #{video.name}",
        :video => video
      }
    end
    post '/:video_id/edit/script' do
      # find video and temporarily save the old video path
      video = Video.where(id: params[:video_id]).first()

      # edit video attributes
      video.update(
        script: params[:video_script]
      )

      # redirect the user
      redirect "/video/#{video.id}"
    end

  end
end