require 'base64'
def calculate_resized_image_b64(resize_str)
  base_image = MiniMagick::Image.open(File.expand_path("../../fixtures/basic-app/source/images/original.jpg", __dir__))
  base_image.resize(resize_str)
  Base64.strict_encode64(base_image.to_blob)
end

image10x10 = "<img src=\"data:image/jpeg;base64,"+calculate_resized_image_b64("10x10>")+"\" class=\"image-resized-to10x10\" />"

image5x5 = "<img src=\"data:image/jpeg;base64,"+calculate_resized_image_b64("5x5")+"\" class=\"image-resized-to5x5\" />"

srcset20x20 = "<source srcset=\"data:image/jpeg;base64,"+calculate_resized_image_b64("20x20")+"\" media=\"(min-width: 900px)\">"

srcset15x15 = "<source srcset=\"data:image/jpeg;base64,"+calculate_resized_image_b64("15x15")+"\" media=\"(min-width: 900px)\">"

Given(/^there is no cache directory yet$/) do
  if directory? MiddlemanSimpleThumbnailer::Extension.config.cache_dir
    remove MiddlemanSimpleThumbnailer::Extension.config.cache_dir
  end
end

Then(/^I should see base64ed thumbnails of the images$/) do
  step %Q{I should see '#{image10x10}'}
  step %Q{I should see '#{image5x5}'}
end


Then(/^I should see base64ed thumbnails and srcset of the images$/) do
  step %Q{I should see '#{image10x10}'}
  step %Q{I should see '#{image5x5}'}
  step %Q{I should see '#{srcset20x20}'}
  step %Q{I should see '#{srcset15x15}'}
end


Then(/^the cache directory should exist (?:at "([^"]+)" )?with the following files$/) do |cache_dir, files|
  cache_dir ||= MiddlemanSimpleThumbnailer::Extension.config.cache_dir
  expect(cache_dir).to be_an_existing_directory
  cd cache_dir
  files.raw.map{|file_row| file_row[0]}.each { |f| expect(f).to be_an_existing_file }
end

Then(/^I should see base64ed data of the cached thumbnails with image path$/) do
  # data that won't ever be generated by resizing an actual image
  cached_10x10_data = "foo"
  cached_5x5_data   = "bar"
  cached_15x15_data = "hello"
  cached_20x20_data = "world"
  cachedimage10x10 = "<img src=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_10x10_data)}\" class=\"image-resized-to10x10\" />"
  cachedimage5x5 = "<img src=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_5x5_data)}\" class=\"image-resized-to5x5\" />"
  cachedsrcset20x20 = "<source srcset=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_20x20_data)}\" media=\"(min-width: 900px)\">"
  cachedsrcset15x15 = "<source srcset=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_15x15_data)}\" media=\"(min-width: 900px)\">"
  step %Q{I should see '#{cachedimage10x10}'}
  step %Q{I should see '#{cachedimage5x5}'}
  step %Q{I should see '#{cachedsrcset20x20}'}
  step %Q{I should see '#{cachedsrcset15x15}'}
end

Then(/^I should see base64ed data of the cached thumbnails$/) do
  # data that won't ever be generated by resizing an actual image
  cached_10x10_data = "foo"
  cached_5x5_data   = "bar"
  cachedimage10x10 = "<img src=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_10x10_data)}\" class=\"image-resized-to10x10\" />"
  cachedimage5x5 = "<img src=\"data:image/jpeg;base64,#{Base64.strict_encode64(cached_5x5_data)}\" class=\"image-resized-to5x5\" />"
  step %Q{I should see '#{cachedimage10x10}'}
  step %Q{I should see '#{cachedimage5x5}'}
end

Then(/^the following images should exist:$/) do |table|
  table.hashes.each do |row|
    cd('.')  do
      image = MiniMagick::Image.open(row["filename"])
      expect(image.dimensions).to eq row["dimensions"].split("x").map(&:to_i)
    end
  end
end