# To update to the newest version of SWORD do the following:
# * Scroll down to the line where the "rev" is listed
# * Update that value to match the latest revision of SWORD's SVN trunk
# * Comment out the hash line below that
# * Run a `nix build` on the current target
# * When you receive an error about the hash mismatch, copy the correct value
#   and paste it into the hash as the new value, then uncomment the hash
# * Run the build again. It won't need to re-fetch the sources, it will only
#   execute the build
{
  description = "Subversion SWORD builds.";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    flake-root.url = "github:srid/flake-root";
    hooks.url = "github:cachix/git-hooks.nix";
    aarch_fix.url = "github:greg-hellings/nixpkgs/ucrt/zlib";
  };

  outputs =
    { flake-parts, ... }@inputs:
    flake-parts.lib.mkFlake { inherit inputs; } {
      imports = [ inputs.flake-root.flakeModule ];
      flake = {
        # Universal things
        overlays.default = _final: _prev: { };
      };
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "aarch64-darwin"
      ];
      perSystem =
        { pkgs, self', ... }@inputs':
        let
          arm = (import inputs.aarch_fix { inherit (inputs') system; });
        in
        {
          _module.args.pkgs = import inputs.nixpkgs {
            inherit (inputs') system;
          };

          devShells.default = pkgs.mkShell {
            # These will just be available
            packages = with pkgs; [ pre-commit ];

            buildInputs = self'.checks.pre-commit.enabledPackages;

            inherit (self'.checks.pre-commit) shellHook;
          };

          checks = {
            pre-commit = inputs.hooks.lib.${inputs'.system}.run {
              src = ./.;
              hooks = {
                check-added-large-files.enable = true;
                check-case-conflicts.enable = true;
                check-merge-conflicts.enable = true;
                check-symlinks.enable = true;
                deadnix.enable = true;
                end-of-file-fixer.enable = true;
                fix-byte-order-marker.enable = true;
                mixed-line-endings.enable = true;
                nixfmt-rfc-style.enable = true;
                trim-trailing-whitespace.enable = true;
              };
            };
          };

          # This is not special, this is just flakes
          packages =
            let
              tar =
                win:
                let
                  svnSword = (
                    win.sword.overrideAttrs {
                      src = pkgs.fetchsvn {
                        url = "https://svn.crosswire.org/svn/sword/trunk";
                        rev = "3913";
                        hash = "sha256-7/B2IOVETC++or8SFfZ0VhDhMYdtphHXJjzEvVq+4JI=";
                      };
                      patches = [ ];
                    }
                  );
                in
                pkgs.writeShellApplication {
                  name = "package-sword";
                  runtimeInputs = with pkgs; [
                    coreutils
                    gnutar
                    xz
                  ];
                  text = ''
                    set -x
                    out=$(pwd)
                    pushd ${svnSword}
                    tar --mtime="$(date +'%Y-%m-%d')" -cvhaf "$out/sword.tar.xz" ./* --transform "s+^\\./+sword/+"
                  '';
                };
            in
            with pkgs.pkgsCross;
            {
              default = tar mingwW64;
              x86 = tar mingwW64;
              ucrt = tar ucrt64;
              ucrtAarch = tar arm.pkgsCross.ucrtAarch64;
            };
        };
    };
}