defmodule Mix.Tasks.Version do
  use Mix.Task

  @impl Mix.Task
  def run(args) do
    version = Enum.at(args, 0)
    description = Regex.replace(~r/\\n/, Enum.at(args, 1), "\n")

    Mix.shell().info("Updating DOCS...")
    {:ok, docs} = File.read("DOCS.md")
    File.write("DOCS.md", Regex.replace(~r/{:ex_azure_key_vault, "~> (.*)"}/, docs, "{:ex_azure_key_vault, \"~> #{version}\"}"))
    Mix.shell().info("DOCS updated!")

    Mix.shell().info("")

    Mix.shell().info("Updating README...")
    {:ok, readme} = File.read("README.md")
    File.write("README.md", Regex.replace(~r/{:ex_azure_key_vault, "~> (.*)"}/, readme, "{:ex_azure_key_vault, \"~> #{version}\"}"))
    Mix.shell().info("README updated!")

    Mix.shell().info("")

    Mix.shell().info("Updating mix.exs...")
    {:ok, mix_exs} = File.read("mix.exs")
    File.write("mix.exs", Regex.replace(~r/@version "(.*)"/, mix_exs, "@version \"#{version}\""))
    Mix.shell().info("mix.exs updated!")

    Mix.shell().info("")

    Mix.shell().info("Updating CHANGELOG...")
    {:ok, changelog} = File.read("CHANGELOG.md")
    changelog = Regex.replace(~r/# Changelog\n/, changelog, "")
    updated_changelog = "# Changelog\n\n## #{version}\n\n#{description}\n#{changelog}"
    File.write("CHANGELOG.md", updated_changelog)
    Mix.shell().info("CHANGELOG updated!")
  end
end