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                    <pre class="text-sm leading-relaxed text-gray-900 dark:text-gray-100 whitespace-pre-wrap font-mono" data-code-content="0199c676-8ba9-79df-9368-f8c9ac252f00">---
model: claude-sonnet-4-0
---

# Configuration Validation

You are a configuration management expert specializing in validating, testing, and ensuring the correctness of application configurations. Create comprehensive validation schemas, implement configuration testing strategies, and ensure configurations are secure, consistent, and error-free across all environments.

## Context
The user needs to validate configuration files, implement configuration schemas, ensure consistency across environments, and prevent configuration-related errors. Focus on creating robust validation rules, type safety, security checks, and automated validation processes.

## Requirements
$ARGUMENTS

## Instructions

### 1. Configuration Analysis

Analyze existing configuration structure and identify validation needs:

**Configuration Scanner**
```python
import os
import yaml
import json
import toml
import configparser
from pathlib import Path
from typing import Dict, List, Any, Set

class ConfigurationAnalyzer:
    def analyze_project(self, project_path: str) -&gt; Dict[str, Any]:
        &quot;&quot;&quot;
        Analyze project configuration files and patterns
        &quot;&quot;&quot;
        analysis = {
            &#39;config_files&#39;: self._find_config_files(project_path),
            &#39;config_patterns&#39;: self._identify_patterns(project_path),
            &#39;security_issues&#39;: self._check_security_issues(project_path),
            &#39;consistency_issues&#39;: self._check_consistency(project_path),
            &#39;validation_coverage&#39;: self._assess_validation(project_path),
            &#39;recommendations&#39;: []
        }
        
        self._generate_recommendations(analysis)
        return analysis
    
    def _find_config_files(self, project_path: str) -&gt; List[Dict]:
        &quot;&quot;&quot;Find all configuration files in project&quot;&quot;&quot;
        config_patterns = [
            &#39;**/*.json&#39;, &#39;**/*.yaml&#39;, &#39;**/*.yml&#39;, &#39;**/*.toml&#39;,
            &#39;**/*.ini&#39;, &#39;**/*.conf&#39;, &#39;**/*.config&#39;, &#39;**/*.env*&#39;,
            &#39;**/*.properties&#39;, &#39;**/config.js&#39;, &#39;**/config.ts&#39;
        ]
        
        config_files = []
        for pattern in config_patterns:
            for file_path in Path(project_path).glob(pattern):
                if not self._should_ignore(file_path):
                    config_files.append({
                        &#39;path&#39;: str(file_path),
                        &#39;type&#39;: self._detect_config_type(file_path),
                        &#39;size&#39;: file_path.stat().st_size,
                        &#39;environment&#39;: self._detect_environment(file_path)
                    })
        
        return config_files
    
    def _check_security_issues(self, project_path: str) -&gt; List[Dict]:
        &quot;&quot;&quot;Check for security issues in configurations&quot;&quot;&quot;
        issues = []
        
        # Patterns that might indicate secrets
        secret_patterns = [
            r&#39;(api[_-]?key|apikey)&#39;,
            r&#39;(secret|password|passwd|pwd)&#39;,
            r&#39;(token|auth)&#39;,
            r&#39;(private[_-]?key)&#39;,
            r&#39;(aws[_-]?access|aws[_-]?secret)&#39;,
            r&#39;(database[_-]?url|db[_-]?connection)&#39;
        ]
        
        for config_file in self._find_config_files(project_path):
            content = Path(config_file[&#39;path&#39;]).read_text()
            
            for pattern in secret_patterns:
                if re.search(pattern, content, re.IGNORECASE):
                    # Check if it&#39;s a placeholder or actual secret
                    if self._looks_like_real_secret(content, pattern):
                        issues.append({
                            &#39;file&#39;: config_file[&#39;path&#39;],
                            &#39;type&#39;: &#39;potential_secret&#39;,
                            &#39;pattern&#39;: pattern,
                            &#39;severity&#39;: &#39;high&#39;
                        })
        
        return issues
    
    def _check_consistency(self, project_path: str) -&gt; List[Dict]:
        &quot;&quot;&quot;Check configuration consistency across environments&quot;&quot;&quot;
        inconsistencies = []
        
        # Group configs by base name
        config_groups = defaultdict(list)
        for config in self._find_config_files(project_path):
            base_name = self._get_base_config_name(config[&#39;path&#39;])
            config_groups[base_name].append(config)
        
        # Check each group for inconsistencies
        for base_name, configs in config_groups.items():
            if len(configs) &gt; 1:
                keys_by_env = {}
                for config in configs:
                    env = config.get(&#39;environment&#39;, &#39;default&#39;)
                    keys = self._extract_config_keys(config[&#39;path&#39;])
                    keys_by_env[env] = keys
                
                # Find missing keys
                all_keys = set()
                for keys in keys_by_env.values():
                    all_keys.update(keys)
                
                for env, keys in keys_by_env.items():
                    missing = all_keys - keys
                    if missing:
                        inconsistencies.append({
                            &#39;config_group&#39;: base_name,
                            &#39;environment&#39;: env,
                            &#39;missing_keys&#39;: list(missing),
                            &#39;severity&#39;: &#39;medium&#39;
                        })
        
        return inconsistencies
```

### 2. Schema Definition and Validation

Implement configuration schema validation:

**JSON Schema Validator**
```typescript
// config-validator.ts
import Ajv from &#39;ajv&#39;;
import ajvFormats from &#39;ajv-formats&#39;;
import ajvKeywords from &#39;ajv-keywords&#39;;
import { JSONSchema7 } from &#39;json-schema&#39;;

interface ValidationResult {
  valid: boolean;
  errors?: Array&lt;{
    path: string;
    message: string;
    keyword: string;
    params: any;
  }&gt;;
}

export class ConfigValidator {
  private ajv: Ajv;
  private schemas: Map&lt;string, JSONSchema7&gt; = new Map();
  
  constructor() {
    this.ajv = new Ajv({
      allErrors: true,
      verbose: true,
      strict: false,
      coerceTypes: true
    });
    
    // Add formats support
    ajvFormats(this.ajv);
    ajvKeywords(this.ajv);
    
    // Add custom formats
    this.addCustomFormats();
  }
  
  private addCustomFormats() {
    // URL format with protocol validation
    this.ajv.addFormat(&#39;url-https&#39;, {
      type: &#39;string&#39;,
      validate: (data: string) =&gt; {
        try {
          const url = new URL(data);
          return url.protocol === &#39;https:&#39;;
        } catch {
          return false;
        }
      }
    });
    
    // Environment variable reference
    this.ajv.addFormat(&#39;env-var&#39;, {
      type: &#39;string&#39;,
      validate: /^\$\{[A-Z_][A-Z0-9_]*\}$/
    });
    
    // Semantic version
    this.ajv.addFormat(&#39;semver&#39;, {
      type: &#39;string&#39;,
      validate: /^\d+\.\d+\.\d+(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$/
    });
    
    // Port number
    this.ajv.addFormat(&#39;port&#39;, {
      type: &#39;number&#39;,
      validate: (data: number) =&gt; data &gt;= 1 &amp;&amp; data &lt;= 65535
    });
    
    // Duration format (e.g., &quot;5m&quot;, &quot;1h&quot;, &quot;30s&quot;)
    this.ajv.addFormat(&#39;duration&#39;, {
      type: &#39;string&#39;,
      validate: /^\d+[smhd]$/
    });
  }
  
  registerSchema(name: string, schema: JSONSchema7): void {
    this.schemas.set(name, schema);
    this.ajv.addSchema(schema, name);
  }
  
  validate(configData: any, schemaName: string): ValidationResult {
    const validate = this.ajv.getSchema(schemaName);
    
    if (!validate) {
      throw new Error(`Schema &#39;${schemaName}&#39; not found`);
    }
    
    const valid = validate(configData);
    
    if (!valid &amp;&amp; validate.errors) {
      return {
        valid: false,
        errors: validate.errors.map(error =&gt; ({
          path: error.instancePath || &#39;/&#39;,
          message: error.message || &#39;Validation error&#39;,
          keyword: error.keyword,
          params: error.params
        }))
      };
    }
    
    return { valid: true };
  }
  
  generateSchema(sampleConfig: any): JSONSchema7 {
    // Auto-generate schema from sample configuration
    const schema: JSONSchema7 = {
      type: &#39;object&#39;,
      properties: {},
      required: []
    };
    
    for (const [key, value] of Object.entries(sampleConfig)) {
      schema.properties![key] = this.inferSchema(value);
      
      // Make all top-level properties required by default
      if (schema.required &amp;&amp; !key.startsWith(&#39;optional_&#39;)) {
        schema.required.push(key);
      }
    }
    
    return schema;
  }
  
  private inferSchema(value: any): JSONSchema7 {
    if (value === null) {
      return { type: &#39;null&#39; };
    }
    
    if (Array.isArray(value)) {
      return {
        type: &#39;array&#39;,
        items: value.length &gt; 0 ? this.inferSchema(value[0]) : {}
      };
    }
    
    if (typeof value === &#39;object&#39;) {
      const properties: Record&lt;string, JSONSchema7&gt; = {};
      const required: string[] = [];
      
      for (const [k, v] of Object.entries(value)) {
        properties[k] = this.inferSchema(v);
        if (v !== null &amp;&amp; v !== undefined) {
          required.push(k);
        }
      }
      
      return {
        type: &#39;object&#39;,
        properties,
        required
      };
    }
    
    // Infer format from value patterns
    if (typeof value === &#39;string&#39;) {
      if (value.match(/^https?:\/\//)) {
        return { type: &#39;string&#39;, format: &#39;uri&#39; };
      }
      if (value.match(/^\d{4}-\d{2}-\d{2}$/)) {
        return { type: &#39;string&#39;, format: &#39;date&#39; };
      }
      if (value.match(/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i)) {
        return { type: &#39;string&#39;, format: &#39;uuid&#39; };
      }
    }
    
    return { type: typeof value as JSONSchema7[&#39;type&#39;] };
  }
}

// Example schemas
export const schemas = {
  database: {
    type: &#39;object&#39;,
    properties: {
      host: { type: &#39;string&#39;, format: &#39;hostname&#39; },
      port: { type: &#39;integer&#39;, format: &#39;port&#39; },
      database: { type: &#39;string&#39;, minLength: 1 },
      user: { type: &#39;string&#39;, minLength: 1 },
      password: { type: &#39;string&#39;, minLength: 8 },
      ssl: {
        type: &#39;object&#39;,
        properties: {
          enabled: { type: &#39;boolean&#39; },
          ca: { type: &#39;string&#39; },
          cert: { type: &#39;string&#39; },
          key: { type: &#39;string&#39; }
        },
        required: [&#39;enabled&#39;]
      },
      pool: {
        type: &#39;object&#39;,
        properties: {
          min: { type: &#39;integer&#39;, minimum: 0 },
          max: { type: &#39;integer&#39;, minimum: 1 },
          idleTimeout: { type: &#39;string&#39;, format: &#39;duration&#39; }
        }
      }
    },
    required: [&#39;host&#39;, &#39;port&#39;, &#39;database&#39;, &#39;user&#39;, &#39;password&#39;],
    additionalProperties: false
  },
  
  api: {
    type: &#39;object&#39;,
    properties: {
      server: {
        type: &#39;object&#39;,
        properties: {
          host: { type: &#39;string&#39;, default: &#39;0.0.0.0&#39; },
          port: { type: &#39;integer&#39;, format: &#39;port&#39;, default: 3000 },
          cors: {
            type: &#39;object&#39;,
            properties: {
              enabled: { type: &#39;boolean&#39; },
              origins: {
                type: &#39;array&#39;,
                items: { type: &#39;string&#39;, format: &#39;uri&#39; }
              },
              credentials: { type: &#39;boolean&#39; }
            }
          }
        },
        required: [&#39;port&#39;]
      },
      auth: {
        type: &#39;object&#39;,
        properties: {
          jwt: {
            type: &#39;object&#39;,
            properties: {
              secret: { type: &#39;string&#39;, minLength: 32 },
              expiresIn: { type: &#39;string&#39;, format: &#39;duration&#39; },
              algorithm: {
                type: &#39;string&#39;,
                enum: [&#39;HS256&#39;, &#39;HS384&#39;, &#39;HS512&#39;, &#39;RS256&#39;, &#39;RS384&#39;, &#39;RS512&#39;]
              }
            },
            required: [&#39;secret&#39;, &#39;expiresIn&#39;]
          }
        }
      },
      rateLimit: {
        type: &#39;object&#39;,
        properties: {
          windowMs: { type: &#39;integer&#39;, minimum: 1000 },
          max: { type: &#39;integer&#39;, minimum: 1 },
          message: { type: &#39;string&#39; }
        }
      }
    },
    required: [&#39;server&#39;, &#39;auth&#39;]
  }
};
```

### 3. Environment-Specific Validation

Validate configurations across environments:

**Environment Validator**
```python
# environment_validator.py
from typing import Dict, List, Set, Any
import os
import re

class EnvironmentValidator:
    def __init__(self):
        self.environments = [&#39;development&#39;, &#39;staging&#39;, &#39;production&#39;]
        self.environment_rules = self._define_environment_rules()
    
    def _define_environment_rules(self) -&gt; Dict[str, Dict]:
        &quot;&quot;&quot;Define environment-specific validation rules&quot;&quot;&quot;
        return {
            &#39;development&#39;: {
                &#39;allow_debug&#39;: True,
                &#39;require_https&#39;: False,
                &#39;allow_wildcards&#39;: True,
                &#39;min_password_length&#39;: 8,
                &#39;allowed_log_levels&#39;: [&#39;debug&#39;, &#39;info&#39;, &#39;warn&#39;, &#39;error&#39;]
            },
            &#39;staging&#39;: {
                &#39;allow_debug&#39;: True,
                &#39;require_https&#39;: True,
                &#39;allow_wildcards&#39;: False,
                &#39;min_password_length&#39;: 12,
                &#39;allowed_log_levels&#39;: [&#39;info&#39;, &#39;warn&#39;, &#39;error&#39;]
            },
            &#39;production&#39;: {
                &#39;allow_debug&#39;: False,
                &#39;require_https&#39;: True,
                &#39;allow_wildcards&#39;: False,
                &#39;min_password_length&#39;: 16,
                &#39;allowed_log_levels&#39;: [&#39;warn&#39;, &#39;error&#39;],
                &#39;require_encryption&#39;: True,
                &#39;require_backup&#39;: True
            }
        }
    
    def validate_config(self, config: Dict, environment: str) -&gt; List[Dict]:
        &quot;&quot;&quot;Validate configuration for specific environment&quot;&quot;&quot;
        if environment not in self.environment_rules:
            raise ValueError(f&quot;Unknown environment: {environment}&quot;)
        
        rules = self.environment_rules[environment]
        violations = []
        
        # Check debug settings
        if not rules[&#39;allow_debug&#39;] and config.get(&#39;debug&#39;, False):
            violations.append({
                &#39;rule&#39;: &#39;no_debug_in_production&#39;,
                &#39;message&#39;: &#39;Debug mode is not allowed in production&#39;,
                &#39;severity&#39;: &#39;critical&#39;,
                &#39;path&#39;: &#39;debug&#39;
            })
        
        # Check HTTPS requirements
        if rules[&#39;require_https&#39;]:
            urls = self._extract_urls(config)
            for url_path, url in urls:
                if url.startswith(&#39;http://&#39;) and &#39;localhost&#39; not in url:
                    violations.append({
                        &#39;rule&#39;: &#39;require_https&#39;,
                        &#39;message&#39;: f&#39;HTTPS required for {url_path}&#39;,
                        &#39;severity&#39;: &#39;high&#39;,
                        &#39;path&#39;: url_path,
                        &#39;value&#39;: url
                    })
        
        # Check log levels
        log_level = config.get(&#39;logging&#39;, {}).get(&#39;level&#39;)
        if log_level and log_level not in rules[&#39;allowed_log_levels&#39;]:
            violations.append({
                &#39;rule&#39;: &#39;invalid_log_level&#39;,
                &#39;message&#39;: f&quot;Log level &#39;{log_level}&#39; not allowed in {environment}&quot;,
                &#39;severity&#39;: &#39;medium&#39;,
                &#39;path&#39;: &#39;logging.level&#39;,
                &#39;allowed&#39;: rules[&#39;allowed_log_levels&#39;]
            })
        
        # Check production-specific requirements
        if environment == &#39;production&#39;:
            violations.extend(self._validate_production_requirements(config))
        
        return violations
    
    def _validate_production_requirements(self, config: Dict) -&gt; List[Dict]:
        &quot;&quot;&quot;Additional validation for production environment&quot;&quot;&quot;
        violations = []
        
        # Check encryption settings
        if not config.get(&#39;security&#39;, {}).get(&#39;encryption&#39;, {}).get(&#39;enabled&#39;):
            violations.append({
                &#39;rule&#39;: &#39;encryption_required&#39;,
                &#39;message&#39;: &#39;Encryption must be enabled in production&#39;,
                &#39;severity&#39;: &#39;critical&#39;,
                &#39;path&#39;: &#39;security.encryption.enabled&#39;
            })
        
        # Check backup configuration
        if not config.get(&#39;backup&#39;, {}).get(&#39;enabled&#39;):
            violations.append({
                &#39;rule&#39;: &#39;backup_required&#39;,
                &#39;message&#39;: &#39;Backup must be configured for production&#39;,
                &#39;severity&#39;: &#39;high&#39;,
                &#39;path&#39;: &#39;backup.enabled&#39;
            })
        
        # Check monitoring
        if not config.get(&#39;monitoring&#39;, {}).get(&#39;enabled&#39;):
            violations.append({
                &#39;rule&#39;: &#39;monitoring_required&#39;,
                &#39;message&#39;: &#39;Monitoring must be enabled in production&#39;,
                &#39;severity&#39;: &#39;high&#39;,
                &#39;path&#39;: &#39;monitoring.enabled&#39;
            })
        
        return violations
    
    def _extract_urls(self, obj: Any, path: str = &#39;&#39;) -&gt; List[tuple]:
        &quot;&quot;&quot;Recursively extract URLs from configuration&quot;&quot;&quot;
        urls = []
        
        if isinstance(obj, dict):
            for key, value in obj.items():
                new_path = f&quot;{path}.{key}&quot; if path else key
                urls.extend(self._extract_urls(value, new_path))
        elif isinstance(obj, list):
            for i, item in enumerate(obj):
                new_path = f&quot;{path}[{i}]&quot;
                urls.extend(self._extract_urls(item, new_path))
        elif isinstance(obj, str) and re.match(r&#39;^https?://&#39;, obj):
            urls.append((path, obj))
        
        return urls

# Cross-environment consistency checker
class ConsistencyChecker:
    def check_consistency(self, configs: Dict[str, Dict]) -&gt; List[Dict]:
        &quot;&quot;&quot;Check configuration consistency across environments&quot;&quot;&quot;
        issues = []
        
        # Get all unique keys across environments
        all_keys = set()
        env_keys = {}
        
        for env, config in configs.items():
            keys = self._flatten_keys(config)
            env_keys[env] = keys
            all_keys.update(keys)
        
        # Check for missing keys
        for env, keys in env_keys.items():
            missing_keys = all_keys - keys
            if missing_keys:
                issues.append({
                    &#39;type&#39;: &#39;missing_keys&#39;,
                    &#39;environment&#39;: env,
                    &#39;keys&#39;: list(missing_keys),
                    &#39;severity&#39;: &#39;medium&#39;
                })
        
        # Check for type inconsistencies
        for key in all_keys:
            types_by_env = {}
            for env, config in configs.items():
                value = self._get_nested_value(config, key)
                if value is not None:
                    types_by_env[env] = type(value).__name__
            
            unique_types = set(types_by_env.values())
            if len(unique_types) &gt; 1:
                issues.append({
                    &#39;type&#39;: &#39;type_mismatch&#39;,
                    &#39;key&#39;: key,
                    &#39;types&#39;: types_by_env,
                    &#39;severity&#39;: &#39;high&#39;
                })
        
        return issues
```

### 4. Configuration Testing Framework

Implement configuration testing:

**Config Test Suite**
```typescript
// config-test.ts
import { describe, it, expect, beforeEach } from &#39;@jest/globals&#39;;
import { ConfigValidator } from &#39;./config-validator&#39;;
import { loadConfig } from &#39;./config-loader&#39;;

interface ConfigTestCase {
  name: string;
  config: any;
  environment: string;
  expectedValid: boolean;
  expectedErrors?: string[];
}

export class ConfigTestSuite {
  private validator: ConfigValidator;
  
  constructor() {
    this.validator = new ConfigValidator();
  }
  
  async runTests(testCases: ConfigTestCase[]): Promise&lt;TestResults&gt; {
    const results: TestResults = {
      passed: 0,
      failed: 0,
      errors: []
    };
    
    for (const testCase of testCases) {
      try {
        const result = await this.runTestCase(testCase);
        if (result.passed) {
          results.passed++;
        } else {
          results.failed++;
          results.errors.push({
            testName: testCase.name,
            errors: result.errors
          });
        }
      } catch (error) {
        results.failed++;
        results.errors.push({
          testName: testCase.name,
          errors: [error.message]
        });
      }
    }
    
    return results;
  }
  
  private async runTestCase(testCase: ConfigTestCase): Promise&lt;TestResult&gt; {
    // Load and validate config
    const validationResult = this.validator.validate(
      testCase.config,
      testCase.environment
    );
    
    const result: TestResult = {
      passed: validationResult.valid === testCase.expectedValid,
      errors: []
    };
    
    // Check expected errors
    if (testCase.expectedErrors &amp;&amp; validationResult.errors) {
      for (const expectedError of testCase.expectedErrors) {
        const found = validationResult.errors.some(
          error =&gt; error.message.includes(expectedError)
        );
        
        if (!found) {
          result.passed = false;
          result.errors.push(`Expected error not found: ${expectedError}`);
        }
      }
    }
    
    return result;
  }
}

// Jest test examples
describe(&#39;Configuration Validation&#39;, () =&gt; {
  let validator: ConfigValidator;
  
  beforeEach(() =&gt; {
    validator = new ConfigValidator();
  });
  
  describe(&#39;Database Configuration&#39;, () =&gt; {
    it(&#39;should validate valid database config&#39;, () =&gt; {
      const config = {
        host: &#39;localhost&#39;,
        port: 5432,
        database: &#39;myapp&#39;,
        user: &#39;dbuser&#39;,
        password: &#39;securepassword123&#39;
      };
      
      const result = validator.validate(config, &#39;database&#39;);
      expect(result.valid).toBe(true);
    });
    
    it(&#39;should reject invalid port number&#39;, () =&gt; {
      const config = {
        host: &#39;localhost&#39;,
        port: 70000, // Invalid port
        database: &#39;myapp&#39;,
        user: &#39;dbuser&#39;,
        password: &#39;securepassword123&#39;
      };
      
      const result = validator.validate(config, &#39;database&#39;);
      expect(result.valid).toBe(false);
      expect(result.errors?.[0].path).toBe(&#39;/port&#39;);
    });
    
    it(&#39;should require SSL in production&#39;, () =&gt; {
      const config = {
        host: &#39;prod-db.example.com&#39;,
        port: 5432,
        database: &#39;myapp&#39;,
        user: &#39;dbuser&#39;,
        password: &#39;securepassword123&#39;,
        ssl: { enabled: false }
      };
      
      const envValidator = new EnvironmentValidator();
      const violations = envValidator.validate_config(config, &#39;production&#39;);
      
      expect(violations).toContainEqual(
        expect.objectContaining({
          rule: &#39;ssl_required_in_production&#39;
        })
      );
    });
  });
  
  describe(&#39;API Configuration&#39;, () =&gt; {
    it(&#39;should validate CORS settings&#39;, () =&gt; {
      const config = {
        server: {
          port: 3000,
          cors: {
            enabled: true,
            origins: [&#39;https://example.com&#39;, &#39;https://app.example.com&#39;],
            credentials: true
          }
        },
        auth: {
          jwt: {
            secret: &#39;a&#39;.repeat(32),
            expiresIn: &#39;1h&#39;,
            algorithm: &#39;HS256&#39;
          }
        }
      };
      
      const result = validator.validate(config, &#39;api&#39;);
      expect(result.valid).toBe(true);
    });
    
    it(&#39;should reject short JWT secrets&#39;, () =&gt; {
      const config = {
        server: { port: 3000 },
        auth: {
          jwt: {
            secret: &#39;tooshort&#39;,
            expiresIn: &#39;1h&#39;
          }
        }
      };
      
      const result = validator.validate(config, &#39;api&#39;);
      expect(result.valid).toBe(false);
      expect(result.errors?.[0].path).toBe(&#39;/auth/jwt/secret&#39;);
    });
  });
});
```

### 5. Runtime Configuration Validation

Implement runtime validation and hot-reloading:

**Runtime Config Validator**
```typescript
// runtime-validator.ts
import { EventEmitter } from &#39;events&#39;;
import * as chokidar from &#39;chokidar&#39;;
import { ConfigValidator } from &#39;./config-validator&#39;;

export class RuntimeConfigValidator extends EventEmitter {
  private validator: ConfigValidator;
  private currentConfig: any;
  private watchers: Map&lt;string, chokidar.FSWatcher&gt; = new Map();
  private validationCache: Map&lt;string, ValidationResult&gt; = new Map();
  
  constructor() {
    super();
    this.validator = new ConfigValidator();
  }
  
  async initialize(configPath: string): Promise&lt;void&gt; {
    // Load initial config
    this.currentConfig = await this.loadAndValidate(configPath);
    
    // Setup file watcher for hot-reloading
    this.watchConfig(configPath);
  }
  
  private async loadAndValidate(configPath: string): Promise&lt;any&gt; {
    try {
      // Load config
      const config = await this.loadConfig(configPath);
      
      // Validate config
      const validationResult = this.validator.validate(
        config,
        this.detectEnvironment()
      );
      
      if (!validationResult.valid) {
        this.emit(&#39;validation:error&#39;, {
          path: configPath,
          errors: validationResult.errors
        });
        
        // In development, log errors but continue
        if (this.isDevelopment()) {
          console.error(&#39;Configuration validation errors:&#39;, validationResult.errors);
          return config;
        }
        
        // In production, throw error
        throw new ConfigValidationError(
          &#39;Configuration validation failed&#39;,
          validationResult.errors
        );
      }
      
      this.emit(&#39;validation:success&#39;, { path: configPath });
      return config;
    } catch (error) {
      this.emit(&#39;validation:error&#39;, { path: configPath, error });
      throw error;
    }
  }
  
  private watchConfig(configPath: string): void {
    const watcher = chokidar.watch(configPath, {
      persistent: true,
      ignoreInitial: true
    });
    
    watcher.on(&#39;change&#39;, async () =&gt; {
      console.log(`Configuration file changed: ${configPath}`);
      
      try {
        const newConfig = await this.loadAndValidate(configPath);
        
        // Check if config actually changed
        if (JSON.stringify(newConfig) !== JSON.stringify(this.currentConfig)) {
          const oldConfig = this.currentConfig;
          this.currentConfig = newConfig;
          
          this.emit(&#39;config:changed&#39;, {
            oldConfig,
            newConfig,
            changedKeys: this.findChangedKeys(oldConfig, newConfig)
          });
        }
      } catch (error) {
        this.emit(&#39;config:error&#39;, { error });
      }
    });
    
    this.watchers.set(configPath, watcher);
  }
  
  private findChangedKeys(oldConfig: any, newConfig: any): string[] {
    const changed: string[] = [];
    
    const findDiff = (old: any, new_: any, path: string = &#39;&#39;) =&gt; {
      // Check all keys in old config
      for (const key in old) {
        const currentPath = path ? `${path}.${key}` : key;
        
        if (!(key in new_)) {
          changed.push(`${currentPath} (removed)`);
        } else if (typeof old[key] === &#39;object&#39; &amp;&amp; typeof new_[key] === &#39;object&#39;) {
          findDiff(old[key], new_[key], currentPath);
        } else if (old[key] !== new_[key]) {
          changed.push(currentPath);
        }
      }
      
      // Check for new keys
      for (const key in new_) {
        if (!(key in old)) {
          const currentPath = path ? `${path}.${key}` : key;
          changed.push(`${currentPath} (added)`);
        }
      }
    };
    
    findDiff(oldConfig, newConfig);
    return changed;
  }
  
  validateValue(path: string, value: any): ValidationResult {
    // Use cached schema for performance
    const cacheKey = `${path}:${JSON.stringify(value)}`;
    if (this.validationCache.has(cacheKey)) {
      return this.validationCache.get(cacheKey)!;
    }
    
    // Extract schema for specific path
    const schema = this.getSchemaForPath(path);
    if (!schema) {
      return { valid: true }; // No schema defined for this path
    }
    
    const result = this.validator.validateValue(value, schema);
    this.validationCache.set(cacheKey, result);
    
    return result;
  }
  
  async shutdown(): Promise&lt;void&gt; {
    // Close all watchers
    for (const watcher of this.watchers.values()) {
      await watcher.close();
    }
    
    this.watchers.clear();
    this.validationCache.clear();
  }
}

// Type-safe configuration access
export class TypedConfig&lt;T&gt; {
  constructor(
    private config: T,
    private validator: RuntimeConfigValidator
  ) {}
  
  get&lt;K extends keyof T&gt;(key: K): T[K] {
    const value = this.config[key];
    
    // Validate on access in development
    if (process.env.NODE_ENV === &#39;development&#39;) {
      const result = this.validator.validateValue(String(key), value);
      if (!result.valid) {
        console.warn(`Invalid config value for ${String(key)}:`, result.errors);
      }
    }
    
    return value;
  }
  
  getOrDefault&lt;K extends keyof T&gt;(key: K, defaultValue: T[K]): T[K] {
    return this.config[key] ?? defaultValue;
  }
  
  require&lt;K extends keyof T&gt;(key: K): NonNullable&lt;T[K]&gt; {
    const value = this.config[key];
    
    if (value === null || value === undefined) {
      throw new Error(`Required configuration &#39;${String(key)}&#39; is missing`);
    }
    
    return value as NonNullable&lt;T[K]&gt;;
  }
}
```

### 6. Configuration Migration

Implement configuration migration and versioning:

**Config Migration System**
```python
# config_migration.py
from typing import Dict, List, Callable, Any
from abc import ABC, abstractmethod
import semver

class ConfigMigration(ABC):
    &quot;&quot;&quot;Base class for configuration migrations&quot;&quot;&quot;
    
    @property
    @abstractmethod
    def version(self) -&gt; str:
        &quot;&quot;&quot;Target version for this migration&quot;&quot;&quot;
        pass
    
    @property
    @abstractmethod
    def description(self) -&gt; str:
        &quot;&quot;&quot;Description of what this migration does&quot;&quot;&quot;
        pass
    
    @abstractmethod
    def up(self, config: Dict) -&gt; Dict:
        &quot;&quot;&quot;Apply migration to config&quot;&quot;&quot;
        pass
    
    @abstractmethod
    def down(self, config: Dict) -&gt; Dict:
        &quot;&quot;&quot;Revert migration from config&quot;&quot;&quot;
        pass
    
    def validate(self, config: Dict) -&gt; bool:
        &quot;&quot;&quot;Validate config after migration&quot;&quot;&quot;
        return True

class ConfigMigrator:
    def __init__(self):
        self.migrations: List[ConfigMigration] = []
    
    def register_migration(self, migration: ConfigMigration):
        &quot;&quot;&quot;Register a migration&quot;&quot;&quot;
        self.migrations.append(migration)
        # Sort by version
        self.migrations.sort(key=lambda m: semver.VersionInfo.parse(m.version))
    
    def migrate(self, config: Dict, target_version: str) -&gt; Dict:
        &quot;&quot;&quot;Migrate config to target version&quot;&quot;&quot;
        current_version = config.get(&#39;_version&#39;, &#39;0.0.0&#39;)
        
        if semver.compare(current_version, target_version) == 0:
            return config  # Already at target version
        
        if semver.compare(current_version, target_version) &gt; 0:
            # Downgrade
            return self._downgrade(config, current_version, target_version)
        else:
            # Upgrade
            return self._upgrade(config, current_version, target_version)
    
    def _upgrade(self, config: Dict, from_version: str, to_version: str) -&gt; Dict:
        &quot;&quot;&quot;Upgrade config from one version to another&quot;&quot;&quot;
        result = config.copy()
        
        for migration in self.migrations:
            if (semver.compare(migration.version, from_version) &gt; 0 and
                semver.compare(migration.version, to_version) &lt;= 0):
                
                print(f&quot;Applying migration to v{migration.version}: {migration.description}&quot;)
                result = migration.up(result)
                
                if not migration.validate(result):
                    raise ValueError(f&quot;Migration to v{migration.version} failed validation&quot;)
                
                result[&#39;_version&#39;] = migration.version
        
        return result
    
    def _downgrade(self, config: Dict, from_version: str, to_version: str) -&gt; Dict:
        &quot;&quot;&quot;Downgrade config from one version to another&quot;&quot;&quot;
        result = config.copy()
        
        # Apply migrations in reverse order
        for migration in reversed(self.migrations):
            if (semver.compare(migration.version, to_version) &gt; 0 and
                semver.compare(migration.version, from_version) &lt;= 0):
                
                print(f&quot;Reverting migration from v{migration.version}: {migration.description}&quot;)
                result = migration.down(result)
                
                # Update version to previous migration&#39;s version
                prev_version = self._get_previous_version(migration.version)
                result[&#39;_version&#39;] = prev_version
        
        return result
    
    def _get_previous_version(self, version: str) -&gt; str:
        &quot;&quot;&quot;Get the version before the given version&quot;&quot;&quot;
        for i, migration in enumerate(self.migrations):
            if migration.version == version:
                return self.migrations[i-1].version if i &gt; 0 else &#39;0.0.0&#39;
        return &#39;0.0.0&#39;

# Example migrations
class MigrationV1_0_0(ConfigMigration):
    @property
    def version(self) -&gt; str:
        return &#39;1.0.0&#39;
    
    @property
    def description(self) -&gt; str:
        return &#39;Initial configuration structure&#39;
    
    def up(self, config: Dict) -&gt; Dict:
        # Add default structure
        return {
            &#39;_version&#39;: &#39;1.0.0&#39;,
            &#39;app&#39;: config.get(&#39;app&#39;, {}),
            &#39;database&#39;: config.get(&#39;database&#39;, {}),
            &#39;logging&#39;: config.get(&#39;logging&#39;, {&#39;level&#39;: &#39;info&#39;})
        }
    
    def down(self, config: Dict) -&gt; Dict:
        # Remove version info
        result = config.copy()
        result.pop(&#39;_version&#39;, None)
        return result

class MigrationV1_1_0(ConfigMigration):
    @property
    def version(self) -&gt; str:
        return &#39;1.1.0&#39;
    
    @property
    def description(self) -&gt; str:
        return &#39;Split database config into read/write connections&#39;
    
    def up(self, config: Dict) -&gt; Dict:
        result = config.copy()
        
        # Transform single database config to read/write split
        if &#39;database&#39; in result and not isinstance(result[&#39;database&#39;], dict):
            old_db = result[&#39;database&#39;]
            result[&#39;database&#39;] = {
                &#39;write&#39;: old_db,
                &#39;read&#39;: old_db.copy()  # Same as write initially
            }
        
        return result
    
    def down(self, config: Dict) -&gt; Dict:
        result = config.copy()
        
        # Revert to single database config
        if &#39;database&#39; in result and &#39;write&#39; in result[&#39;database&#39;]:
            result[&#39;database&#39;] = result[&#39;database&#39;][&#39;write&#39;]
        
        return result

class MigrationV2_0_0(ConfigMigration):
    @property
    def version(self) -&gt; str:
        return &#39;2.0.0&#39;
    
    @property
    def description(self) -&gt; str:
        return &#39;Add security configuration section&#39;
    
    def up(self, config: Dict) -&gt; Dict:
        result = config.copy()
        
        # Add security section with defaults
        if &#39;security&#39; not in result:
            result[&#39;security&#39;] = {
                &#39;encryption&#39;: {
                    &#39;enabled&#39;: True,
                    &#39;algorithm&#39;: &#39;AES-256-GCM&#39;
                },
                &#39;tls&#39;: {
                    &#39;minVersion&#39;: &#39;1.2&#39;,
                    &#39;ciphers&#39;: [&#39;TLS_AES_256_GCM_SHA384&#39;, &#39;TLS_AES_128_GCM_SHA256&#39;]
                }
            }
        
        return result
    
    def down(self, config: Dict) -&gt; Dict:
        result = config.copy()
        result.pop(&#39;security&#39;, None)
        return result
```

### 7. Configuration Security

Implement secure configuration handling:

**Secure Config Manager**
```typescript
// secure-config.ts
import * as crypto from &#39;crypto&#39;;
import { SecretManagerServiceClient } from &#39;@google-cloud/secret-manager&#39;;
import { KeyVaultSecret, SecretClient } from &#39;@azure/keyvault-secrets&#39;;

interface EncryptedValue {
  encrypted: true;
  value: string;
  algorithm: string;
  iv: string;
  authTag?: string;
}

export class SecureConfigManager {
  private secretsCache: Map&lt;string, any&gt; = new Map();
  private encryptionKey: Buffer;
  
  constructor(private options: SecureConfigOptions) {
    this.encryptionKey = this.deriveKey(options.masterKey);
  }
  
  private deriveKey(masterKey: string): Buffer {
    return crypto.pbkdf2Sync(masterKey, &#39;config-salt&#39;, 100000, 32, &#39;sha256&#39;);
  }
  
  encrypt(value: any): EncryptedValue {
    const algorithm = &#39;aes-256-gcm&#39;;
    const iv = crypto.randomBytes(16);
    const cipher = crypto.createCipheriv(algorithm, this.encryptionKey, iv);
    
    const stringValue = JSON.stringify(value);
    let encrypted = cipher.update(stringValue, &#39;utf8&#39;, &#39;hex&#39;);
    encrypted += cipher.final(&#39;hex&#39;);
    
    const authTag = cipher.getAuthTag();
    
    return {
      encrypted: true,
      value: encrypted,
      algorithm,
      iv: iv.toString(&#39;hex&#39;),
      authTag: authTag.toString(&#39;hex&#39;)
    };
  }
  
  decrypt(encryptedValue: EncryptedValue): any {
    const decipher = crypto.createDecipheriv(
      encryptedValue.algorithm,
      this.encryptionKey,
      Buffer.from(encryptedValue.iv, &#39;hex&#39;)
    );
    
    if (encryptedValue.authTag) {
      decipher.setAuthTag(Buffer.from(encryptedValue.authTag, &#39;hex&#39;));
    }
    
    let decrypted = decipher.update(encryptedValue.value, &#39;hex&#39;, &#39;utf8&#39;);
    decrypted += decipher.final(&#39;utf8&#39;);
    
    return JSON.parse(decrypted);
  }
  
  async processConfig(config: any): Promise&lt;any&gt; {
    const processed = {};
    
    for (const [key, value] of Object.entries(config)) {
      if (this.isEncryptedValue(value)) {
        // Decrypt encrypted values
        processed[key] = this.decrypt(value as EncryptedValue);
      } else if (this.isSecretReference(value)) {
        // Fetch from secret manager
        processed[key] = await this.fetchSecret(value as string);
      } else if (typeof value === &#39;object&#39; &amp;&amp; value !== null) {
        // Recursively process nested objects
        processed[key] = await this.processConfig(value);
      } else {
        processed[key] = value;
      }
    }
    
    return processed;
  }
  
  private isEncryptedValue(value: any): boolean {
    return typeof value === &#39;object&#39; &amp;&amp; 
           value !== null &amp;&amp; 
           value.encrypted === true;
  }
  
  private isSecretReference(value: any): boolean {
    return typeof value === &#39;string&#39; &amp;&amp; 
           (value.startsWith(&#39;secret://&#39;) || 
            value.startsWith(&#39;vault://&#39;) ||
            value.startsWith(&#39;aws-secret://&#39;));
  }
  
  private async fetchSecret(reference: string): Promise&lt;any&gt; {
    // Check cache first
    if (this.secretsCache.has(reference)) {
      return this.secretsCache.get(reference);
    }
    
    let secretValue: any;
    
    if (reference.startsWith(&#39;secret://&#39;)) {
      // Google Secret Manager
      secretValue = await this.fetchGoogleSecret(reference);
    } else if (reference.startsWith(&#39;vault://&#39;)) {
      // Azure Key Vault
      secretValue = await this.fetchAzureSecret(reference);
    } else if (reference.startsWith(&#39;aws-secret://&#39;)) {
      // AWS Secrets Manager
      secretValue = await this.fetchAWSSecret(reference);
    }
    
    // Cache the secret
    this.secretsCache.set(reference, secretValue);
    
    return secretValue;
  }
  
  private async fetchGoogleSecret(reference: string): Promise&lt;any&gt; {
    const secretName = reference.replace(&#39;secret://&#39;, &#39;&#39;);
    const client = new SecretManagerServiceClient();
    
    const [version] = await client.accessSecretVersion({
      name: `projects/${this.options.gcpProject}/secrets/${secretName}/versions/latest`
    });
    
    const payload = version.payload?.data;
    if (!payload) {
      throw new Error(`Secret ${secretName} has no payload`);
    }
    
    return JSON.parse(payload.toString());
  }
  
  validateSecureConfig(config: any): ValidationResult {
    const errors: string[] = [];
    
    const checkSecrets = (obj: any, path: string = &#39;&#39;) =&gt; {
      for (const [key, value] of Object.entries(obj)) {
        const currentPath = path ? `${path}.${key}` : key;
        
        // Check for plaintext secrets
        if (this.looksLikeSecret(key) &amp;&amp; typeof value === &#39;string&#39;) {
          if (!this.isEncryptedValue(value) &amp;&amp; !this.isSecretReference(value)) {
            errors.push(`Potential plaintext secret at ${currentPath}`);
          }
        }
        
        // Recursively check nested objects
        if (typeof value === &#39;object&#39; &amp;&amp; value !== null &amp;&amp; !this.isEncryptedValue(value)) {
          checkSecrets(value, currentPath);
        }
      }
    };
    
    checkSecrets(config);
    
    return {
      valid: errors.length === 0,
      errors: errors.map(message =&gt; ({
        path: &#39;&#39;,
        message,
        keyword: &#39;security&#39;,
        params: {}
      }))
    };
  }
  
  private looksLikeSecret(key: string): boolean {
    const secretPatterns = [
      &#39;password&#39;, &#39;secret&#39;, &#39;key&#39;, &#39;token&#39;, &#39;credential&#39;,
      &#39;api_key&#39;, &#39;apikey&#39;, &#39;private_key&#39;, &#39;auth&#39;
    ];
    
    const lowerKey = key.toLowerCase();
    return secretPatterns.some(pattern =&gt; lowerKey.includes(pattern));
  }
}
```

### 8. Configuration Documentation

Generate configuration documentation:

**Config Documentation Generator**
```python
# config_docs_generator.py
from typing import Dict, List, Any
import json
import yaml

class ConfigDocGenerator:
    def generate_docs(self, schema: Dict, examples: Dict) -&gt; str:
        &quot;&quot;&quot;Generate comprehensive configuration documentation&quot;&quot;&quot;
        docs = [&quot;# Configuration Reference\n&quot;]
        
        # Add overview
        docs.append(&quot;## Overview\n&quot;)
        docs.append(&quot;This document describes all available configuration options.\n&quot;)
        
        # Add table of contents
        docs.append(&quot;## Table of Contents\n&quot;)
        toc = self._generate_toc(schema.get(&#39;properties&#39;, {}))
        docs.extend(toc)
        
        # Add configuration sections
        docs.append(&quot;\n## Configuration Options\n&quot;)
        sections = self._generate_sections(schema.get(&#39;properties&#39;, {}), examples)
        docs.extend(sections)
        
        # Add examples
        docs.append(&quot;\n## Complete Examples\n&quot;)
        docs.extend(self._generate_examples(examples))
        
        # Add validation rules
        docs.append(&quot;\n## Validation Rules\n&quot;)
        docs.extend(self._generate_validation_rules(schema))
        
        return &#39;\n&#39;.join(docs)
    
    def _generate_sections(self, properties: Dict, examples: Dict, level: int = 3) -&gt; List[str]:
        &quot;&quot;&quot;Generate documentation for each configuration section&quot;&quot;&quot;
        sections = []
        
        for prop_name, prop_schema in properties.items():
            # Section header
            sections.append(f&quot;{&#39;#&#39; * level} {prop_name}\n&quot;)
            
            # Description
            if &#39;description&#39; in prop_schema:
                sections.append(f&quot;{prop_schema[&#39;description&#39;]}\n&quot;)
            
            # Type information
            sections.append(f&quot;**Type:** `{prop_schema.get(&#39;type&#39;, &#39;any&#39;)}`\n&quot;)
            
            # Required
            if prop_name in prop_schema.get(&#39;required&#39;, []):
                sections.append(&quot;**Required:** Yes\n&quot;)
            
            # Default value
            if &#39;default&#39; in prop_schema:
                sections.append(f&quot;**Default:** `{json.dumps(prop_schema[&#39;default&#39;])}`\n&quot;)
            
            # Validation constraints
            constraints = self._extract_constraints(prop_schema)
            if constraints:
                sections.append(&quot;**Constraints:**&quot;)
                for constraint in constraints:
                    sections.append(f&quot;- {constraint}&quot;)
                sections.append(&quot;&quot;)
            
            # Example
            if prop_name in examples:
                sections.append(&quot;**Example:**&quot;)
                sections.append(&quot;```yaml&quot;)
                sections.append(yaml.dump({prop_name: examples[prop_name]}, default_flow_style=False))
                sections.append(&quot;```\n&quot;)
            
            # Nested properties
            if prop_schema.get(&#39;type&#39;) == &#39;object&#39; and &#39;properties&#39; in prop_schema:
                nested = self._generate_sections(
                    prop_schema[&#39;properties&#39;],
                    examples.get(prop_name, {}),
                    level + 1
                )
                sections.extend(nested)
        
        return sections
    
    def _extract_constraints(self, schema: Dict) -&gt; List[str]:
        &quot;&quot;&quot;Extract validation constraints from schema&quot;&quot;&quot;
        constraints = []
        
        if &#39;enum&#39; in schema:
            constraints.append(f&quot;Must be one of: {&#39;, &#39;.join(map(str, schema[&#39;enum&#39;]))}&quot;)
        
        if &#39;minimum&#39; in schema:
            constraints.append(f&quot;Minimum value: {schema[&#39;minimum&#39;]}&quot;)
        
        if &#39;maximum&#39; in schema:
            constraints.append(f&quot;Maximum value: {schema[&#39;maximum&#39;]}&quot;)
        
        if &#39;minLength&#39; in schema:
            constraints.append(f&quot;Minimum length: {schema[&#39;minLength&#39;]}&quot;)
        
        if &#39;maxLength&#39; in schema:
            constraints.append(f&quot;Maximum length: {schema[&#39;maxLength&#39;]}&quot;)
        
        if &#39;pattern&#39; in schema:
            constraints.append(f&quot;Must match pattern: `{schema[&#39;pattern&#39;]}`&quot;)
        
        if &#39;format&#39; in schema:
            constraints.append(f&quot;Format: {schema[&#39;format&#39;]}&quot;)
        
        return constraints

# Generate interactive config builder
class InteractiveConfigBuilder:
    def generate_html_builder(self, schema: Dict) -&gt; str:
        &quot;&quot;&quot;Generate interactive HTML configuration builder&quot;&quot;&quot;
        html = &quot;&quot;&quot;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Configuration Builder&lt;/title&gt;
    &lt;style&gt;
        body { font-family: Arial, sans-serif; margin: 20px; }
        .config-section { margin: 20px 0; padding: 20px; border: 1px solid #ddd; }
        .config-field { margin: 10px 0; }
        label { display: inline-block; width: 200px; font-weight: bold; }
        input, select { width: 300px; padding: 5px; }
        .error { color: red; font-size: 12px; }
        .preview { background: #f5f5f5; padding: 20px; margin-top: 20px; }
        pre { background: white; padding: 10px; overflow-x: auto; }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;h1&gt;Configuration Builder&lt;/h1&gt;
    &lt;div id=&quot;config-form&quot;&gt;&lt;/div&gt;
    &lt;button onclick=&quot;validateConfig()&quot;&gt;Validate&lt;/button&gt;
    &lt;button onclick=&quot;exportConfig()&quot;&gt;Export&lt;/button&gt;
    
    &lt;div class=&quot;preview&quot;&gt;
        &lt;h2&gt;Preview&lt;/h2&gt;
        &lt;pre id=&quot;config-preview&quot;&gt;&lt;/pre&gt;
    &lt;/div&gt;
    
    &lt;script&gt;
        const schema = &quot;&quot;&quot; + json.dumps(schema) + &quot;&quot;&quot;;
        
        function buildForm() {
            const container = document.getElementById(&#39;config-form&#39;);
            container.innerHTML = renderSchema(schema.properties);
        }
        
        function renderSchema(properties, prefix = &#39;&#39;) {
            let html = &#39;&#39;;
            
            for (const [key, prop] of Object.entries(properties)) {
                const fieldId = prefix ? `${prefix}.${key}` : key;
                
                html += &#39;&lt;div class=&quot;config-field&quot;&gt;&#39;;
                html += `&lt;label for=&quot;${fieldId}&quot;&gt;${key}:&lt;/label&gt;`;
                
                if (prop.enum) {
                    html += `&lt;select id=&quot;${fieldId}&quot; onchange=&quot;updatePreview()&quot;&gt;`;
                    for (const option of prop.enum) {
                        html += `&lt;option value=&quot;${option}&quot;&gt;${option}&lt;/option&gt;`;
                    }
                    html += &#39;&lt;/select&gt;&#39;;
                } else if (prop.type === &#39;boolean&#39;) {
                    html += `&lt;input type=&quot;checkbox&quot; id=&quot;${fieldId}&quot; onchange=&quot;updatePreview()&quot;&gt;`;
                } else if (prop.type === &#39;number&#39; || prop.type === &#39;integer&#39;) {
                    html += `&lt;input type=&quot;number&quot; id=&quot;${fieldId}&quot; onchange=&quot;updatePreview()&quot;&gt;`;
                } else {
                    html += `&lt;input type=&quot;text&quot; id=&quot;${fieldId}&quot; onchange=&quot;updatePreview()&quot;&gt;`;
                }
                
                html += `&lt;div class=&quot;error&quot; id=&quot;${fieldId}-error&quot;&gt;&lt;/div&gt;`;
                html += &#39;&lt;/div&gt;&#39;;
                
                if (prop.type === &#39;object&#39; &amp;&amp; prop.properties) {
                    html += &#39;&lt;div class=&quot;config-section&quot;&gt;&#39;;
                    html += renderSchema(prop.properties, fieldId);
                    html += &#39;&lt;/div&gt;&#39;;
                }
            }
            
            return html;
        }
        
        function updatePreview() {
            const config = buildConfig();
            document.getElementById(&#39;config-preview&#39;).textContent = 
                JSON.stringify(config, null, 2);
        }
        
        function buildConfig() {
            // Build configuration from form values
            const config = {};
            // Implementation here
            return config;
        }
        
        function validateConfig() {
            // Validate against schema
            const config = buildConfig();
            // Implementation here
        }
        
        function exportConfig() {
            const config = buildConfig();
            const blob = new Blob([JSON.stringify(config, null, 2)], 
                                 {type: &#39;application/json&#39;});
            const url = URL.createObjectURL(blob);
            const a = document.createElement(&#39;a&#39;);
            a.href = url;
            a.download = &#39;config.json&#39;;
            a.click();
        }
        
        // Initialize
        buildForm();
        updatePreview();
    &lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
        &quot;&quot;&quot;
        return html
```

## Output Format

1. **Configuration Analysis**: Current configuration assessment
2. **Validation Schemas**: JSON Schema definitions for all configs
3. **Environment Rules**: Environment-specific validation rules
4. **Test Suite**: Comprehensive configuration tests
5. **Migration Scripts**: Version migration implementations
6. **Security Report**: Security issues and recommendations
7. **Documentation**: Auto-generated configuration reference
8. **Validation Pipeline**: CI/CD integration for config validation
9. **Interactive Tools**: Configuration builders and validators

Focus on preventing configuration errors, ensuring consistency across environments, and maintaining security best practices.</pre>
                  </div>
                </div>
              </div>
          </div>

        </div>
      </div>
    </div>
  </div>
</div>

</template></turbo-stream>