{ lib, ... }:
let
  inherit (lib) mkOption;
  inherit (lib.types) anything listOf nonEmptyListOf submodule str;
in
{
  request = submodule {
    options = {
      user = mkOption {
        description = "Unix user doing the backups.";
        type = str;
      };

      sourceDirectories = mkOption {
        description = "Directories to backup.";
        type = nonEmptyListOf str;
      };

      excludePatterns = mkOption {
        description = "Patterns to exclude.";
        type = listOf str;
        default = [];
      };

      hooks = mkOption {
        description = "Hooks to run around the backup.";
        default = {};
        type = submodule {
          options = {
            before_backup = mkOption {
              description = "Hooks to run before backup";
              type = listOf str;
              default = [];
            };

            after_backup = mkOption {
              description = "Hooks to run after backup";
              type = listOf str;
              default = [];
            };
          };
        };
      };
    };
  };

  result = submodule {
    options = {
      restoreScript = mkOption {
        description = "Name of script that can restore the database.";
        type = str;
      };

      backupService = mkOption {
        description = "Name of service backing up the database.";
        type = str;
      };
    };
  };
}