import { useState, memo } from 'react';
import './ProcessesViewer.css';

interface BlockState {
  commited_in: string;
  state_id: string;
  public_data: {
    memberPublicName?: string | number[];
    pairedAddresses?: string[] | number[];
  };
  // Autres propriétés disponibles si nécessaires
}

interface Block {
  states: BlockState[];
}

interface Processes {
  [key: string]: Block;
}

interface ProcessesViewerProps {
  processes: Processes | null;
}

function ProcessesViewer({ processes }: ProcessesViewerProps) {
  const [expandedBlocks, setExpandedBlocks] = useState<string[]>([]);

  // Si pas de données, afficher un message
  if (!processes || Object.keys(processes).length === 0) {
    return (
      <div className="processes-viewer-empty">
        <h3>Aucun processus disponible</h3>
        <p>Connectez-vous</p>
      </div>
    );
  }

  const toggleBlock = (blockId: string) => {
    setExpandedBlocks(prev =>
      prev.includes(blockId)
        ? prev.filter(id => id !== blockId)
        : [...prev, blockId]
    );
  };

  const formatAddress = (address: string | number[] | undefined): string => {
    if (!address) return "Adresse non disponible";

    if (Array.isArray(address)) {
      // Si c'est un tableau de nombres, on le convertit en chaîne de caractères
      try {
        // Convertir les codes ASCII en caractères
        const chars = address.map(code => String.fromCharCode(Number(code)));
        return chars.join('');
      } catch (e) {
        return "Adresse encodée (format non supporté)";
      }
    } else if (typeof address === 'string') {
      // Si c'est déjà une chaîne, on la retourne telle quelle
      return address;
    }

    return "Format d'adresse inconnu";
  };

  const formatName = (name: string | number[] | undefined): string => {
    if (!name) return "Nom non disponible";

    if (Array.isArray(name)) {
      if (name.length === 1 && name[0] === 96) {
        return "`"; // Caractère spécial
      }
      try {
        const chars = name.map(code => String.fromCharCode(Number(code)));
        return chars.join('');
      } catch (e) {
        return "Nom encodé (format non supporté)";
      }
    } else if (typeof name === 'string') {
      return name;
    }

    return "Format de nom inconnu";
  };

  return (
    <div className="processes-viewer">
      <h2>Processus</h2>
      <p className="block-count">{Object.keys(processes).length} processus disponible(s)</p>

      <div className="block-list">
        {Object.entries(processes).map(([blockId, block]) => {
          const isExpanded = expandedBlocks.includes(blockId);
          const stateCount = block.states.length;
          // Le premier état est le plus récent

          return (
            <div key={blockId} className="block-item">
              <div
                className={`block-header ${isExpanded ? 'expanded' : ''}`}
                onClick={() => toggleBlock(blockId)}
              >
                <div className="block-id">{blockId.substring(0, 8)}...{blockId.substring(blockId.length - 4)}</div>
                <div className="block-state-count">{stateCount} état(s)</div>
                <div className="block-toggle">{isExpanded ? '▼' : '▶'}</div>
              </div>

              {isExpanded && (
                <div className="block-details">
                  <div className="block-complete-id">
                    <strong>ID complet:</strong> {blockId}
                  </div>

                  {block.states.map((state, index) => (
                    <div key={`${blockId}-state-${index}`} className="state-item">
                      <h4>État {index + 1}</h4>
                      <div className="state-detail">
                        <strong>State ID:</strong> {state.state_id}
                      </div>
                      <div className="state-detail">
                        <strong>Commited dans:</strong> {state.commited_in}
                      </div>

                      <div className="state-public-data">
                        <h5>Données publiques</h5>
                        <div className="public-data-item">
                          <strong>Nom:</strong> {formatName(state.public_data.memberPublicName)}
                        </div>
                        {state.public_data.pairedAddresses && (
                          <div className="public-data-item">
                            <strong>Adresses associées:</strong>
                            <ul className="address-list">
                              {Array.isArray(state.public_data.pairedAddresses) ?
                                (typeof state.public_data.pairedAddresses[0] === 'string' ? (
                                  (state.public_data.pairedAddresses as string[]).map((addr, i) => (
                                    <li key={i}>{addr}</li>
                                  ))
                                ) : (
                                  <li>{formatAddress(state.public_data.pairedAddresses as number[])}</li>
                                )) : (
                                  <li>{String(state.public_data.pairedAddresses || '')}</li>
                                )
                              }
                            </ul>
                          </div>
                        )}
                      </div>
                    </div>
                  ))}
                </div>
              )}
            </div>
          );
        })}
      </div>
    </div>
  );
};

ProcessesViewer.displayName = 'ProcessesViewer';
export default memo(ProcessesViewer);