/*
 * SoulFire
 * Copyright (C) 2026  AlexProgrammerDE
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package com.soulfiremc.server.script.nodes.util;

import com.soulfiremc.server.script.*;
import reactor.core.publisher.Mono;

import java.util.Map;

/// Utility node that checks if a value is null or empty.
/// Works with strings, collections, and maps.
/// Input: value
/// Output: result (boolean)
public final class IsEmptyNode extends AbstractScriptNode {
  public static final NodeMetadata METADATA = NodeMetadata.builder()
    .type("util.is_empty")
    .displayName("Is Empty")
    .category(CategoryRegistry.UTILITY)
    .addInputs(
      PortDefinition.input("value", "Value", PortType.ANY, "Value to check for empty")
    )
    .addOutputs(
      PortDefinition.output("result", "Result", PortType.BOOLEAN, "True if value is null or empty")
    )
    .description("Checks if a value is null or empty (works with strings and lists)")
    .icon("circle-slash")
    .color("#795548")
    .addKeywords("empty", "check", "null", "blank", "validate", "length")
    .build();

  @Override
  public Mono<Map<String, NodeValue>> executeReactive(NodeRuntime runtime, Map<String, NodeValue> inputs) {
    var value = inputs.get("value");

    boolean isEmpty;
    if (value == null || value.isNull()) {
      isEmpty = true;
    } else {
      // Try as string
      var str = value.asString(null);
      if (str != null) {
        isEmpty = str.isEmpty();
      } else {
        // Try as list
        var list = value.asList();
        isEmpty = list.isEmpty();
      }
    }

    return completedMono(result("result", isEmpty));
  }
}
