flake.nix

{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        erl = pkgs.beam.interpreters.erlang_27;
        erlangPackages = pkgs.beam.packagesWith erl;
        elixir = erlangPackages.elixir;
      in
      {
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            elixir
            erlang_26
            direnv
            inotify-tools
            just
            gphoto2
            v4l-utils
            jq
            ffmpeg
          ];

          shellHook = ''
            eval "$(direnv hook bash)"
            direnv allow
            mix deps.get
          '';
        };
        packages = let
          version = "0.1.0";
          src = ./.;
          mixFodDeps = erlangPackages.fetchMixDeps {
            inherit version src;
            pname = "photo-boite-deps";
            sha256 = "sha256-njEjczedx4mRDZrIzqXXtwr7OoDroOG7hcqzU4WXu6U=";
          };
          translatedPlatform = {
            aarch64-darwin = "macos-arm64";
            aarch64-linux = "linux-arm64";
            armv7l-linux = "linux-armv7";
            x86_64-darwin = "macos-x64";
            x86_64-linux = "linux-x64";
          }
          .${system};
        in rec {
          default = erlangPackages.mixRelease {
            inherit version src mixFodDeps;
            pname = "photo-boite-web";
            postBuild = ''
              mix do deps.loadpaths --no-deps-check, phx.digest
            '';
            preInstall = ''
              ln -s ${pkgs.tailwindcss}/bin/tailwindcss _build/tailwind-${translatedPlatform}
              ln -s ${pkgs.esbuild}/bin/esbuild _build/esbuild-${translatedPlatform}

              ${elixir}/bin/mix assets.deploy
              ${elixir}/bin/mix phx.gen.release
            '';
          };
        };
      }
    );
}

mix.exs

defmodule PhotoBoite.MixProject do
  use Mix.Project

  def project do
    [
      app: :photo_boite,
      version: "0.1.0",
      elixir: "~> 1.14",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      aliases: aliases(),
      deps: deps()
    ]
  end

  def application do
    [
      mod: {PhotoBoite.Application, []},
      extra_applications: [:logger, :runtime_tools]
    ]
  end

  defp elixirc_paths(:test), do: ["lib", "test/support"]
  defp elixirc_paths(:dev), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  defp deps do
    [
      {:bandit, "~> 1.5"},
      # here's my git dep
      {:box, git: "https://github.com/nicklayb/box_ex.git", tag: "0.14.0"},
      {:credo, "~> 1.7.11", runtime: false, only: ~w(dev test)a},
      {:ecto_sql, "~> 3.10"},
      {:esbuild, "~> 0.8", runtime: Mix.env() == :dev},
      {:gettext, "~> 0.26"},
      {:jason, "~> 1.2"},
      {:postgrex, ">= 0.0.0"},
      {:phoenix, "~> 1.7.19"},
      {:phoenix_ecto, "~> 4.5"},
      {:phoenix_live_view, "~> 1.0.4"},
      {:tailwind, "~> 0.2", runtime: Mix.env() == :dev},
      {:tz, "~> 0.28"},
      {:qr_code, "~> 3.2.0"}
    ]
  end

  defp aliases do
    [
      setup: ["deps.get", "ecto.setup", "assets.setup", "assets.build"],
      "ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
      "ecto.reset": ["ecto.drop", "ecto.setup"],
      test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"],
      "assets.setup": ["tailwind.install --if-missing", "esbuild.install --if-missing"],
      "assets.build": ["tailwind photo_boite", "esbuild photo_boite"],
      "assets.deploy": [
        "tailwind photo_boite --minify",
        "esbuild photo_boite --minify",
        "phx.digest"
      ],
      gettext: [
        "gettext.extract",
        "gettext.merge priv/gettext"
      ]
    ]
  end
end