#!/usr/bin/env ruby

require "fileutils"

Dir.glob("posts/*.md").each do |file|
  name = file.split("/").last.split(".")[0..-2].join

  parts = name.split("-")
  date_parts = parts.shift(3)

  dir = date_parts.join("/").concat("/", parts.join("-"))

  FileUtils.mkdir_p(dir)

  FileUtils.mv(file, "#{dir}/index.md")
end

Dir.glob("**/index.md").each do |file|
  dir = file.split("/")[0..-2].join("/")
  content = File.read(file)
  content.match(/blog\/(.*\.(jpg|jpeg|png))/) do |image|
    if File.exists?("pictures/#{image}")
      FileUtils.mv("pictures/#{image}", dir)
    end
  end

  newcontent = content.gsub(
    /(?:<figure[^\<\>]*>)?\s+{% picture [a-z-]+\s\S+\/([^\/]+\.(?:jpg|jpeg|png))\s+(?:alt="([^"]*)")?\s+%}\s+(?:<figcaption>([^<>]+)<\/figcaption>\s+)?(?:<\/figure>)?/m,
  ) do |match|
    image, alt, caption = match.match(/(?:<figure[^\<\>]*>)?\s+{% picture [a-z-]+\s\S+\/([^\/]+\.(?:jpg|jpeg|png))\s+(?:alt="([^"]*)")?\s+%}\s+(?:<figcaption>([^<>]+)<\/figcaption>\s+)?(?:<\/figure>)?/m).captures

    <<~TAG
      {{< img src="#{image}" alt="#{alt}" caption="#{caption}" >}}
    TAG
  end

  File.open(file, "w") do |f|
    f.write(newcontent)
  end
end