dotfiles/hm/git/default.nix

{ pkgs, lib, config, ... }:
{
  config = lib.mkIf config.programs.git.enable {
    home.packages = [
      (pkgs.writeShellApplication {
        name = "git-sync";
        text = (lib.strings.concatLines
          (map
            (r: ''
              echo "===== ${r.path}"
              if [ ! -d "${r.path}" ]
              then
                ${pkgs.git}/bin/git clone "${r.uri}" "${r.path}"
              else
                (
                  cd "${r.path}"
                  ${pkgs.git}/bin/git --no-optional-locks diff --quiet || echo "Repository is dirty!"
                  ${pkgs.git}/bin/git pull || true
                  # Only push if there's something to push. Also prevents from trying to push on repos where we don't have rights.
                  (${pkgs.git}/bin/git --no-optional-locks status --porcelain -b --ignore-submodules | grep ' \[ahead [0-9]\+\]' && ${pkgs.git}/bin/git push) || true
                )
              fi
            '')
            (lib.attrsets.attrValues config.services.git-sync.repositories)
          )
        );
      })
    ];
    programs.git = {
      package = pkgs.gitFull;
      aliases = {
        "git" = "!exec git"; # In case I write one too many git
      };
      ignores = [
        "*.swp"
        "*.swo"
        "*.ycm_extra_conf.py"
        "tags"
        ".mypy_cache"
      ];
      delta = {
        enable = true;
        options = {
          line-numbers = true;
          syntax-theme = "base16";
        };
      };
      # Also tried difftastic, and while I like the default theme it's a bit
      # less configurable
      lfs.enable = true;
      userEmail = lib.mkDefault "geoffrey@frogeye.fr";
      userName = lib.mkDefault "Geoffrey Frogeye";
      extraConfig = {
        core = {
          editor = "nvim";
        };
        push = {
          default = "matching";
        };
        pull = {
          ff = "only";
        };
      } // lib.optionalAttrs config.frogeye.desktop.xorg {
        diff.tool = "meld";
        difftool.prompt = false;
        "difftool \"meld\"".cmd = "${pkgs.meld}/bin/meld \"$LOCAL\" \"$REMOTE\"";
        # This escapes quotes, which isn't the case in the original, hoping this isn't an issue.
      };
    };
    services = {
      git-sync = {
        enable = false; # The real thing syncs too quickly and asks for passphrase, which is annoying
        # So for now it's just a way to park config which will be reused by git-sync-* commands
        repositories = {
          dotfiles = {
            path = "${config.xdg.configHome}/dotfiles";
            uri = lib.mkDefault "https://git.frogeye.fr/geoffrey/dotfiles.git";
          };
        };
      };
    };
  };
}