import Store from 'electron-store';
import { DocumentMetadata } from '../types';

const store = new Store<{
  documents: Record<string, DocumentMetadata>;
}>();

class VectorStoreService {
  private documents: Map<string, DocumentMetadata>;

  constructor() {
    this.documents = new Map(Object.entries(store.get('documents', {})));
    
    // Add example documents if none exist
    if (this.documents.size === 0) {
      const examples: DocumentMetadata[] = [
        {
          path: 'C:/example/llm-only',
          type: 'directory',
          lastModified: Date.now(),
          size: 0,
          hasEmbeddings: true,
          hasOcr: false
        },
        {
          path: 'C:/example/ocr-only',
          type: 'directory',
          lastModified: Date.now(),
          size: 0,
          hasEmbeddings: false,
          hasOcr: true
        },
        {
          path: 'C:/example/both-enabled',
          type: 'directory',
          lastModified: Date.now(),
          size: 0,
          hasEmbeddings: true,
          hasOcr: true
        }
      ];
      
      examples.forEach(doc => {
        this.documents.set(doc.path, doc);
      });
      store.set('documents', Object.fromEntries(this.documents));
    }
  }

  public async addDocument(content: string, metadata: DocumentMetadata): Promise<void> {
    // TODO: Implement vector storage
    this.documents.set(metadata.path, metadata);
    store.set('documents', Object.fromEntries(this.documents));
  }

  public async deleteDocument(path: string): Promise<void> {
    this.documents.delete(path);
    store.set('documents', Object.fromEntries(this.documents));
  }

  public async updateDocument(content: string, metadata: DocumentMetadata): Promise<void> {
    await this.addDocument(content, metadata);
  }

  public getDocuments(): DocumentMetadata[] {
    return Array.from(this.documents.values());
  }
}

export const vectorStoreService = new VectorStoreService();