// implementation of permission types
// according to the server permissions.ts
// https://codeberg.org/outbag/server/src/branch/dev/src/server/permissions.ts

// same as javascript 0b prefix
// pronounced o-b
int oB(String binary) {
  return int.parse(binary, radix: 2);
}

class ServerPermission {
  static int get none {
    return oB("0000000000000000");
  }

  // default permission set
  static int get def {
    return oB("0000000000000011");
  }

  static int get canUseAPI {
    return oB("0000000000000001");
  }

  static int get provideCert {
    return oB("0000000000000010");
  }

  static int get manageOTA {
    return oB("0000010000000000");
  }

  static int get manageServerProductList {
    return oB("0000100000000000");
  }

  static int get viewUsersAndLists {
    return oB("0001000000000000");
  }

  static int get editSettings {
    return oB("0010000000000000");
  }

  static int get editPermissions {
    return oB("0100000000000000");
  }

  static int get editUsers {
    return oB("1000000000000000");
  }

  static int get allManagement {
    return oB("1111110000000000");
  }

  static int get all {
    return oB("1111111111111111");
  }
}

class RoomPermission {
  static int get addArticles {
    return oB("0000001");
  }

  static int get removeArticles {
    return oB("0000010");
  }

  static int get listGroupsItems {
    return oB("0000100");
  }

  static int get changeMeta {
    return oB("0001000");
  }

  static int get ota {
    return oB("0010000");
  }

  static int get changeAdmin {
    return oB("0100000");
  }

  static int get manageMembers {
    return oB("1000000");
  }

  static List<int> get asList {
    return [
      addArticles,
      removeArticles,
      listGroupsItems,
      changeMeta,
      ota,
      changeAdmin,
      manageMembers
    ];
  }

  static String name(int permission) {
    switch (permission) {
      case 1:
        return 'Add Articles';
      case 2:
        return 'Remove Articles';
      case 4:
        return 'List Groups and Items';
      case 8:
        return 'Change Room Metadata';
      case 16:
        return 'Manage OTAs';
      case 32:
        return 'Manage Admins';
      case 64:
        return 'Manage Members';
    }

    return "Unknown permission";
  }

  static String describe(int permission) {
    switch (permission) {
      case 1:
        return 'Allows users to add items to the shopping list';
      case 2:
        return 'Allows users to remove items from the shopping list';
      case 4:
        return 'Allows the user to view groups and products';
      case 8:
        return 'Allows the user to edit the room name, description and icon';
      case 16:
        return 'Alloww the user to create, share and delete authentification tokens';
      case 32:
        return 'Allows the user to change the admin status of other members';
      case 64:
        return 'Allows the user to invite and kick room members';
    }

    return "No description available";
  }
}