defmodule Dmp.MixProject do
  use Mix.Project

  @version "0.1.0"
  @github_project_url "https://github.com/pzingg/diff_match_patch"

  def project do
    [
      app: :diff_match_patch,
      version: @version,
      elixir: "~> 1.11",
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      source_url: @github_project_url,
      hompepage_url: @github_project_url,
      description: description(),
      package: package(),
      docs: docs()
    ]
  end

  # Run "mix help compile.app" to learn about applications.
  def application do
    [
      # extra_applications: [:logger]
    ]
  end

  defp description do
    """
    An Elixir implementation of the Google diff_match_patch library.
    """
  end

  defp package do
    [
      licenses: ["Apache-2.0"],
      links: %{"GitHub" => @github_project_url}
    ]
  end

  # Load KaTeX JavaScript to docs for math expressions
  defp docs do
    [
      authors: ["Peter Zingg <peter.zingg@gmail.com>"],
      assets: "priv/assets",
      javascript_config_path: "assets/docs_config.js",
      extras: ["README.md": [filename: "readme", title: "Diff Match Patch"]],
      main: "readme",
      # You can specify a function for adding
      # custom content to the generated HTML.
      # This is useful for custom JS/CSS files you want to include.
      before_closing_head_tag: &before_closing_head_tag/1,
      before_closing_body_tag: &before_closing_body_tag/1
    ]
  end

  # In our case we simply add a tags to load KaTeX
  # from CDN and then specify the configuration.
  # Once loaded, the script will dynamically render all LaTeX
  # expressions on the page in place.
  # For more details and options see https://katex.org/docs/autorender.html
  defp before_closing_head_tag(:html) do
    """
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.js" integrity="sha384-I2b1Pcl48X93GxEkGkaMo1hrd6n+IX8H2wgSsMimGbkZoGTve/87h1FjaDNvlpQi" crossorigin="anonymous"></script>
    <script defer src="assets/auto-render.js"></script>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css" integrity="sha384-Xi8rHCmBmhbuyyhbI88391ZKP2dmfnOl4rT9ZfRI7mLTdk1wblIUnrIq35nqwEvC" crossorigin="anonymous">
    <link rel="stylesheet" href="assets/docs.css">
    """
  end

  defp before_closing_head_tag(_), do: ""

  # The `sbMacro` function is a workaround to the problem that
  # two underscores in Markdown are processed before KaTeX can
  # see them.
  defp before_closing_body_tag(:html) do
    """
    <script>
      const sbMacro = function(text) {
        return text.replace(/subscpt/g, '_');
      };

      document.addEventListener('DOMContentLoaded', function() {
        renderMathInElement(document.body, {
          fleqn: true,
          preProcess: sbMacro,
          delimiters: [
            { left: '$$', right: '$$', display: true },
            { left: '$', right: '$', display: false },
          ]
        });
      });
    </script>
    """
  end

  defp before_closing_body_tag(_), do: ""

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      # {:dep_from_hexpm, "~> 0.3.0"},
      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
      {:credo, "~> 1.6", only: [:dev, :test], runtime: false},
      {:dialyxir, "~> 1.0", only: :dev, runtime: false},
      {:ex_doc, "~> 0.28", only: :dev, runtime: false}
    ]
  end
end