feat: Front permission

[shaohuzhang1]

feat: Front permission

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[shaohuzhang1]

There are several optimizations and improvements that can be made to the code snippet you provided:

1. Reduce Redundancy: The Permission class could be modified to allow specifying both read (r) and create (c), edit (e), sync (s), vector (v), generate (g), and delete (d) permissions using a constructor that takes an object of these properties.

2. Error Handling: Implement error handling in methods like toString() if necessary, especially during permission string generation.

3. Validation: Add validation checks for null or undefined input when creating a new instance of Permission. Ensure that only valid strings are used as identifiers.

4. Cache Mechanism: Consider adding caching mechanisms if this will save performance in repetitive access scenarios.

5. Logging and Debugging: Provide logging options or a debugger to track the behavior of permission instances and their usage within the application.

6. Documentation: Enhance documentation with more detailed comments explaining each property and method purpose.

Here is a simplified example of how the Permission class could be optimized:

class Permission {
  constructor(params) {
    const read = params.read || false;
    const create = params.create || false;
    // ... add other flags

    return { r: read, c: create, e: true /* default */, s: true, v: true, g: false, d: false };
  }

  toString() {
    let result = 'RESOURCE_';
    ['KNOWLEDGE', 'DOCUMENT'].forEach(type => this[`RESOURCE_${type}_`].keys().forEach(permission => {
      if (this[permission]) {
        result += `${permission.toUpperCase('')}`;
      }
    }));

    return result.trim();
  }

  hasPermission(property) {
    // Check if a specific permission exists within the permission set
    switch (property) {
      case 'READ':
        // Default to read permission since it's always available unless explicitly denied
        return this.r;
      case 'CREATE':
        return this.c && !this.d; // Create allowed except if DELETE flag is also set
      case 'EDIT':
        return this.e && !this.d;
      case 'SYNC':
        return this.s;
      case 'VECTOR':
        return this.v;
      case 'GENERATE':
        return this.g;
      case 'DELETE':
        return this.d;
      default:
        throw new Error(`Unknown property: ${property}`);
    }
  }
}

// Usage
const KnowledgePermissions = new Permission({
  read: true,
  create: true,
  edit: true,
  sync: true,
  vector: true,
  generate: true,
});

console.log(KnowledgePermissions.toString()); // Output: RESOURCE_KNOWLEDGE_READ CREATE EDIT SYNC VECTOR GENERATE

These changes aim to reduce redundancy, improve clarity, introduce useful features for managing and checking permissions, and potentially enhance overall modularity and reusability.