import {
  Handle,
  type NodeProps,
  Position,
  type Connection,
  type Edge,
  type Node,
} from '@xyflow/react';
import { Toolbar } from '../components/NodeComponents';
import styles from '../../VisProg.module.css';
import { TextField } from '../../../../components/TextField';
import useFlowStore from '../VisProgStores';

/**
 * The default data dot a phase node
 * @param label: the label of this phase
 * @param droppable: whether this node is droppable from the drop bar (initialized as true)
 * @param norm: list of strings of norms for this node
 * @param hasReduce: whether this node has reducing functionality (true by default)
 */
export type NormNodeData = {
  label: string;
  droppable: boolean;
  norm: string;
  hasReduce: boolean;
};



export type NormNode = Node<NormNodeData>


export function NormNodeCanConnect(connection: Connection | Edge): boolean {
  return (connection != undefined);
}

/**
 * Defines how a Norm node should be rendered
 * @param props NodeProps, like id, label, children
 * @returns React.JSX.Element
 */
export default function NormNode(props: NodeProps<Node>) {
  const data = props.data as NormNodeData;
  const {updateNodeData} = useFlowStore();

  const text_input_id = `norm_${props.id}_text_input`;

  const setValue = (value: string) => {
    updateNodeData(props.id, {norm: value});
  }

  return <>
    <Toolbar nodeId={props.id} allowDelete={true}/>
    <div className={`${styles.defaultNode} ${styles.nodeNorm}`}>
      <div className={"flex-row gap-sm"}>
        <label htmlFor={text_input_id}>Norm :</label>
        <TextField
          id={text_input_id}
          value={data.norm}
          setValue={(val) => setValue(val)}
          placeholder={"Pepper should ..."}
        />
      </div>
      <Handle type="source" position={Position.Right} id="norms"/>
    </div>
  </>;
};


/**
 * Reduces each Norm, including its children down into its relevant data.
 * @param props: The Node Properties of this node.
 */
export function NormReduce(node: Node, nodes: Node[]) {
  // Replace this for nodes functionality
  if (nodes.length <= -1) { 
    console.warn("Impossible nodes length in NormReduce") 
  } 
  const data = node.data as NormNodeData;
    return {
      id: node.id,
      label: data.label,
      norm: data.norm,
    }
}

export function NormConnects(thisNode: Node, otherNode: Node, isThisSource: boolean) {
  // Replace this for connection logic
  if (thisNode == undefined && otherNode == undefined && isThisSource == false) { 
    console.warn("Impossible node connection called in EndConnects")
  }
}