{ config, lib, pkgs, ... }:

let
  inherit (lib) mkEnableOption mkOption mkPackageOption mkIf types;
  cfg = config.programs.resticprofile;
  yamlFormat = pkgs.formats.yaml { };
in {
  options.programs.resticprofile = {
    enable = mkEnableOption "Enable resticprofile (Restic backup profile manager)";

    package = mkPackageOption pkgs "resticprofile" { };

    # Multiple configuration files support
    profiles = mkOption {
      type = types.attrsOf yamlFormat.type;
      default = { };
      description = ''
        Multiple configuration files for resticprofile. Each attribute name
        becomes a YAML file under `$XDG_CONFIG_HOME/resticprofile/`.
        This allows creating multiple files that can reference each other.
        The contents of each profile will be merged with the base profile using `lib.mkMerge`.
      '';
      example = {
        common = {
          repository = "local:/backup";
          passwordFile = "password.txt";
          includes = [ "common.yaml" ];
          backup = {
            source = [ "/home/user/Documents" ];
            schedule = "12:30";
          };
          forget = {
            keep-daily = 7;
            keep-weekly = 4;
            keep-monthly = 6;
          };
        };
      };
    };
  };

  config = mkIf cfg.enable {
    home.packages = [ cfg.package ];
    xdg.configFile."resticprofile/profiles.yaml".source =
      let
        baseProfile = import ./resticprofile-base.nix { inherit lib; };
      in
        yamlFormat.generate "profiles" (lib.mkMerge [
          baseProfile
          cfg.profiles
        ]);
  };
}