first commit

src/server/services/FallbackMetadataCollector.ts

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+import { createHash } from 'crypto';
+
+/**
+ * Versão simplificada do MetadataCollector para quando faltam dependências
+ */
+export class FallbackMetadataCollector {
+  /**
+   * Coleta metadados básicos a partir dos dados fornecidos
+   */
+  async collectMetadata(data: {
+    userAgent: string;
+    ipAddress: string;
+    timestamp: Date;
+    fileName: string;
+    fileSize: number;
+    [key: string]: any;
+  }) {
+    const timestamp = new Date();
+    
+    // Retornar metadados simplificados
+    return {
+      timestamp: timestamp.toISOString(),
+      collectionTime: timestamp.toISOString(),
+      userAgent: data.userAgent,
+      ipAddress: data.ipAddress,
+      fileName: data.fileName,
+      fileSize: data.fileSize,
+      fileSizeFormatted: this.formatFileSize(data.fileSize),
+      integrityHash: this.generateHash(data.fileName, data.fileSize.toString(), timestamp.toISOString())
+    };
+  }
+  
+  private formatFileSize(bytes: number): string {
+    if (bytes < 1024) return bytes + ' bytes';
+    else if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
+    else if (bytes < 1024 * 1024 * 1024) return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
+    else return (bytes / (1024 * 1024 * 1024)).toFixed(2) + ' GB';
+  }
+  
+  private generateHash(...values: string[]): string {
+    return createHash('sha256')
+      .update(values.join('|'))
+      .digest('hex');
+  }
+}