.files/nix/homeModules/common/git.nix

{
  lib,
  config,
  ...
}: {
  # git plugins
  programs.git = {
    lfs.enable = true;
    patdiff.enable = true;
  };

  # 懶惰鬼賴皮
  programs.lazygit = let
    patdiffCfg = config.programs.git.patdiff;
  in
    lib.mkIf patdiffCfg.enable {
      settings = {
        git.paging.externalDiffCommand = "${lib.getExe' patdiffCfg.package "patdiff-git-wrapper"}";
      };
    };

  # git itself
  programs.git = {
    extraConfig = {
      init.defaultBranch = "trunk"; # I like trees
      push.autoSetupRemote = true;
      pull.ff = "only";
      rerere.enabled = true;
    };
    ignores = [
      # sanity
      ".env"

      # vim
      "*~"
      "*.swp"

      # darwin
      ".DS_Store"

      # nix
      ".direnv/"
      "**/result*" # building an attr of derivation will make multiple links

      # pre-commit
      ".pre-commit-config.yaml"

      # dotfiles
      ".config/nvim/spell/"
    ];
  };

  # identity
  programs.git = {
    userEmail = "leana.jiang+git@icloud.com";
    userName = "Léana 江";
    signing = {
      key = "0x4E887A4CA9714ADA";
      signByDefault = lib.mkDefault false;
    };
  };

  programs.git.includes = let
    mkIdentity = condition: contents: {inherit condition contents;};
    hostCondition = url: "hasconfig:remote.*.url:git@${url}:*/**";

    universityIdentity = {
      init.defaultBranch = "main";
      user = {
        name = "Léana CHIANG";
        email = "leana.chiang@etudiant.univ-rennes1.fr";
        signingKey = "0x32035DB97E777EEB";
      };
    };
    haskellIdentity = {
      init.defaultBranch = "main";
      user.name = "Léana Jiang";
    };
  in [
    (mkIdentity
      (hostCondition "gitlab.istic.univ-rennes1.fr")
      universityIdentity)
    (mkIdentity
      (hostCondition "gitlab2.istic.univ-rennes1.fr")
      universityIdentity)
    (mkIdentity
      (hostCondition "gitlab.haskell.org")
      haskellIdentity)
  ];
}