namespace :granblue do
  def _progress_reporter(count:, total:, result:, bar_len: 40, multi: true)
    filled_len = (bar_len * count / total).round
    status = File.basename(result)
    percents = (100.0 * count / total).round(1)
    bar = '=' * filled_len + '-' * (bar_len - filled_len)

    if !multi
      print("[#{bar}] #{percents}% ...#{' ' * 14}#{status}\n")
    else
      print "\n"
    end
  end

  def build_weapon_url(id, size)
    # Set up URL
    base_url = 'http://gbf.game-a.mbga.jp/assets/img/sp/assets/weapon'
    extension = '.jpg'

    directory = 'ls' if size.to_s == 'main'
    directory = 'm' if size.to_s == 'grid'
    directory = 's' if size.to_s == 'square'

    "#{base_url}/#{directory}/#{id}#{extension}"
  end

  def build_summon_url(id, size)
    # Set up URL
    base_url = 'http://gbf.game-a.mbga.jp/assets/img/sp/assets/summon'
    extension = '.jpg'

    directory = 'party_main' if size.to_s == 'main'
    directory = 'party_sub' if size.to_s == 'grid'
    directory = 's' if size.to_s == 'square'

    "#{base_url}/#{directory}/#{id}#{extension}"
  end

  def build_chara_url(id, size)
    # Set up URL
    base_url = 'http://gbf.game-a.mbga.jp/assets/img/sp/assets/npc'
    extension = '.jpg'

    directory = 'f' if size.to_s == 'main'
    directory = 'm' if size.to_s == 'grid'
    directory = 's' if size.to_s == 'square'

    "#{base_url}/#{directory}/#{id}#{extension}"
  end

  def download_images(url, size, path)
    download = URI.parse(url).open
    download_URI = "#{path}/#{download.base_uri.to_s.split('/')[-1]}"
    if File.exist?(download_URI)
      puts "\tSkipping #{size}\t#{url}"
    else
      puts "\tDownloading #{size}\t#{url}..."
      IO.copy_stream(download, "#{path}/#{download.base_uri.to_s.split('/')[-1]}")
    end
  rescue OpenURI::HTTPError
    puts "\t404 returned\t#{url}"
  end

  def download_elemental_images(url, size, path, filename)
    filepath = "#{path}/#{filename}"
    download = URI.parse(url).open
    puts "\tDownloading #{size}\t#{url}..."
    IO.copy_stream(download, filepath)
  rescue OpenURI::HTTPError
    puts "\t404 returned\t#{url}"
  end

  def download_chara_images(id)
    sizes = %w[main grid square]

    url = {
      'main': build_chara_url(id, 'main'),
      'grid': build_chara_url(id, 'grid'),
      'square': build_chara_url(id, 'square')
    }

    puts "Character #{id}"
    sizes.each do |size|
      path = "#{Rails.root}/download/character-#{size}"
      download_images(url[size.to_sym], size, path)
    end
  end

  def download_weapon_images(id)
    sizes = %w[main grid square]

    url = {
      'main': build_weapon_url(id, 'main'),
      'grid': build_weapon_url(id, 'grid'),
      'square': build_weapon_url(id, 'square')
    }

    puts "Weapon #{id}"
    sizes.each do |size|
      path = "#{Rails.root}/download/weapon-#{size}"
      download_images(url[size.to_sym], size, path)
    end
  end

  def download_summon_images(id)
    sizes = %w[main grid square]

    url = {
      'main': build_summon_url(id, 'main'),
      'grid': build_summon_url(id, 'grid'),
      'square': build_summon_url(id, 'square')
    }

    puts "Summon #{id}"
    sizes.each do |size|
      path = "#{Rails.root}/download/summon-#{size}"
      download_images(url[size.to_sym], size, path)
    end
  end

  desc 'Downloads elemental weapon images'
  task :download_elemental_images, [:id_base] => :environment do |_t, args|
    id_base = args[:id_base].to_i
    suffixes = [2, 3, 4, 1, 6, 5]

    (1..6).each do |i|
      id = id_base + (i - 1) * 100

      sizes = %w[main grid square]

      url = {
        'main': build_weapon_url(id, 'main'),
        'grid': build_weapon_url(id, 'grid'),
        'square': build_weapon_url(id, 'square')
      }

      puts "Elemental Weapon #{id}_#{suffixes[i - 1]}"
      sizes.each do |size|
        path = "#{Rails.root}/download/weapon-#{size}"
        filename = "#{id}_#{suffixes[i - 1]}.jpg"
        download_elemental_images(url[size.to_sym], size, path, filename)
      end

      _progress_reporter(count: i, total: 6, result: "Elemental Weapon #{id}_#{suffixes[i - 1]}", bar_len: 40,
                         multi: true)
    end
  end

  desc 'Downloads images for the given Granblue_IDs'
  task :download_images, %i[object] => :environment do |_t, args|
    object = args[:object]
    list = args.extras

    list.each do |id|
      case object
      when 'character'
        character = Character.find_by(granblue_id: id)
        next unless character

        download_chara_images("#{id}_01")
        download_chara_images("#{id}_02")
        download_chara_images("#{id}_03") if character.flb
        download_chara_images("#{id}_04") if character.ulb
      when 'weapon'
        weapon = Weapon.find_by(granblue_id: id)
        next unless weapon

        download_weapon_images(id)

        if weapon.transcendence
          download_weapon_images("#{id}_02")
          download_weapon_images("#{id}_03")
        end
      when 'summon'
        summon = Summon.find_by(granblue_id: id)
        next unless summon

        download_summon_images("#{id}")
        download_summon_images("#{id}_02") if summon.ulb

        if summon.transcendence
          download_summon_images("#{id}_03")
          download_summon_images("#{id}_04")
        end
      end
    end
  end
end