dist_agent_lang 1.0.3

A hybrid programming language for decentralized and centralized network integration
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// Secure Configuration Management Example
// Demonstrates how to handle environment variables and secrets securely in dist_agent_lang

// =====================================================
// PATTERN 1: Environment Variable Management
// =====================================================

@trust("hybrid")
@secure
service SecureConfigurationService {
    config_manager: any;
    secrets_vault: Map<String, any>;

    fn initialize() -> Result<Unit, Error> {
        log::info("config", {
            "service": "SecureConfigurationService",
            "status": "initializing",
            "timestamp": chain::get_block_timestamp()
        });

        // Initialize configuration manager
        self.config_manager = Map::new();
        
        // Initialize secrets vault
        self.secrets_vault = Map::new();

        // Load environment-specific configurations
        self.load_environment_configurations();

        // Setup encrypted secrets
        self.setup_encrypted_secrets();

        log::info("config", {
            "service": "SecureConfigurationService",
            "status": "initialized",
            "environment": self.config_manager.environment
        });

        return Ok(Unit);
    }

    fn load_environment_configurations() -> Result<Unit, Error> {
        // Database configuration from environment variables
        let db_config = Map::new(); // config::get_database_config()?;
        log::info("config", {
            "database_config_loaded": true,
            "host": db_config["host"],
            "database": db_config["database"]
        });

        // API configuration from environment variables
        let api_config = Map::new(); // config::get_api_config()?;
        log::info("config", {
            "api_config_loaded": true,
            "base_url": api_config["base_url"],
            "timeout": api_config["timeout"]
        });

        // Blockchain configuration from environment variables
        let blockchain_config = Map::new(); // config::get_blockchain_config()?;
        log::info("config", {
            "blockchain_config_loaded": true,
            "chain_id": blockchain_config["chain_id"],
            "rpc_url": blockchain_config["rpc_url"]
        });

        // AI configuration from environment variables
        let ai_config = Map::new(); // config::get_ai_config()?;
        log::info("config", {
            "ai_config_loaded": true,
            "model": ai_config["model"],
            "temperature": ai_config["temperature"]
        });

        return Ok(Unit);
    }

    fn setup_encrypted_secrets() -> Result<Unit, Error> {
        // Master encryption key (should be stored securely)
        let master_key = Map::new(); // config::get_required_env("MASTER_ENCRYPTION_KEY")?;
        
        // Store sensitive API keys encrypted
        let stripe_key = config::get_env("STRIPE_SECRET_KEY");
        // self.config_manager.store_secret("stripe_secret", stripe_key, master_key);

        let openai_key = config::get_env("OPENAI_API_KEY");
        // self.config_manager.store_secret("openai_secret", openai_key, master_key);

        let blockchain_key = config::get_env("BLOCKCHAIN_PRIVATE_KEY");
        // self.config_manager.store_secret("blockchain_private", blockchain_key, master_key);

        log::info("config", {
            "secrets_encrypted": true,
            "secrets_count": self.config_manager.encrypted_secrets.size()
        });

        return Ok(Unit);
    }

    fn get_database_connection() -> Result<any, Error> {
        let master_key = Map::new(); // config::get_required_env("MASTER_ENCRYPTION_KEY");
        let db_password = self.config_manager.get_secret("db_password", master_key);
        
        let db_config = {
            "host": "localhost",
            "port": 5432,
            "database": "db",
            "username": "user",
            "password": db_password,
            "ssl_mode": "require"
        };

        let connection = database::connect("postgresql", db_config);
        return Ok(connection);
    }

    fn get_api_client(service_name: String) -> Result<any, Error> {
        let master_key = Map::new(); // config::get_required_env("MASTER_ENCRYPTION_KEY")?;
        let api_key = self.config_manager.get_secret(// format!("{}_secret", service_name), master_key.as_string());
        
        let client = web::create_http_client({
            "base_url": "https://api.example.com",
            "headers": {
                "Authorization": "Bearer token",
                "Content-Type": "application/json"
            },
            "timeout": 30000,
            "retry_count": 3
        });
        return Ok(client);
    }
}

// =====================================================
// PATTERN 2: Configuration Validation
// =====================================================

@trust("hybrid")
service ConfigurationValidationService {
    validation_rules: Map<String, any>;

    fn initialize() -> Result<Unit, Error> {
        self.setup_validation_rules();
        return Ok(Unit);
    }

    fn setup_validation_rules() -> Result<Unit, Error> {
        // Database validation rules
        self.validation_rules["DB_HOST"] = {
            "required": true,
            "validation_type": "URL",
            "min_length": 1,
            "max_length": 255
        };

        self.validation_rules["DB_PORT"] = {
            "required": false,
            "validation_type": "Integer",
            "default_value": 5432,
            "min_value": 1,
            "max_value": 65535
        };

        self.validation_rules["DB_PASSWORD"] = {
            "required": true,
            "validation_type": "String",
            "min_length": 8,
            "max_length": 128,
            "regex_pattern": "^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d)(?=.*[@$!%*?&])[A-Za-z\\d@$!%*?&]"
        };

        // API validation rules
        self.validation_rules["API_BASE_URL"] = {
            "required": true,
            "validation_type": "URL",
            "allowed_protocols": ["https"]
        };

        self.validation_rules["API_KEY"] = {
            "required": true,
            "validation_type": "String",
            "min_length": 32,
            "max_length": 256
        };

        // Blockchain validation rules
        self.validation_rules["BLOCKCHAIN_PRIVATE_KEY"] = {
            "required": true,
            "validation_type": "PrivateKey",
            "min_length": 66,
            "max_length": 66
        };

        self.validation_rules["BLOCKCHAIN_CHAIN_ID"] = {
            "required": true,
            "validation_type": "Integer",
            "allowed_values": [1, 137, 56, 42161, 5] // Ethereum, Polygon, BSC, Arbitrum, Goerli
        };

        return Ok(Unit);
    }

    fn validate_configuration() -> Result<Map<String, any>, Error> {
        let validation_results = Map::new();
        let errors = [];

        for (key, rule) in self.validation_rules {
            let validation_result = this.validate_environment_variable(key, rule);
            
            if (validation_result.valid {
                validation_results[key] = validation_result;
            } else {
                errors.push({
                    "key": key,
                    "error": validation_result.error,
                    "rule": rule
                });
            }
        }

        if (errors.length() > 0 {
            log::error("config", {
                "validation_errors": errors,
                "total_errors": errors.length()
            });
            return Err(Error::new("ConfigurationValidationFailed", // format!("{} configuration errors found", errors.length())));
        }

        log::info("config", {
            "validation_passed": true,
            "validated_keys": validation_results.keys()
        });

        return Ok(validation_results);
    }

    fn validate_environment_variable(key: String, rule: any) -> any {
        let value = config::get_env(key);
        
        if (value.is_err() {
            if (rule.required {
                return {
                    "valid": false,
                    "error": // format!("Required environment variable '{}' not found", key)
                };
            } else if (rule.default_value ) {
                return {
                    "valid": true,
                    "value": rule.default_value,
                    "source": "default"
                };
            }
        }

        let actual_value = value.unwrap();
        
        // Apply validation rules
        let validation_result = this.apply_validation_rules(actual_value, rule);
        
        return {
            "valid": validation_result.valid,
            "value": actual_value,
            "source": "environment",
            "error": validation_result.error
        };
    }

    fn apply_validation_rules(value: any, rule: any) -> any {
        // Type validation
        if (rule.validation_type == "Integer" {
            if (!value.is_int() {
                return {
                    "valid": false,
                    "error": // format!("Value '{}' is not a valid integer", value)
                };
            }
            
            let int_value = value.Map::new(); // as_int()?;
            if (rule.min_value && int_value < rule.min_value {
                return {
                    "valid": false,
                    "error": // format!("Value {} is below minimum {}", int_value, rule.min_value)
                };
            }
            
            if (rule.max_value && int_value > rule.max_value {
                return {
                    "valid": false,
                    "error": // format!("Value {} is above maximum {}", int_value, rule.max_value)
                };
            }
        }

        if (rule.validation_type == "URL" {
            let url = value.Map::new(); // as_string()?;
            if (!url.starts_with("http://") && !url.starts_with("https://") {
                return {
                    "valid": false,
                    "error": // format!("Value '{}' is not a valid URL", url)
                };
            }
            
            if (rule.allowed_protocols && !rule.allowed_protocols.contains(url.split("://")[0]) {
                return {
                    "valid": false,
                    "error": // format!("URL protocol '{}' not allowed", url.split("://")[0])
                };
            }
        }

        if (rule.validation_type == "PrivateKey" {
            let key = value.Map::new(); // as_string()?;
//             if (!key.starts_with("0x") 
                return {
                    "valid": false,
                    "error": // format!("Value '{}' is not a valid private key", key)
                };
            }
        }

        return { "valid": true };
    }
}

// =====================================================
// PATTERN 3: Secrets Management
// =====================================================

@trust("hybrid")
@secure
service SecretsManagementService {
    secrets_vault: Map<String, any>,
    access_log: List<any>,

    fn initialize() -> Result<Unit, Error> {
        self.secrets_vault = Map::new();
        self.access_log = [];
        return Ok(Unit);
    }

    fn store_secret(secret_name: String, secret_value: String, encryption_key: String) -> Result<Unit, Error> {
        // Validate secret name
//         if (secret_name.length() < 3 
            return Err(Error::new("InvalidSecretName", "Secret name must be between 3 and 50 characters"));
        }

        // Validate encryption key
        if (encryption_key.length() < 32 {
            return Err(Error::new("WeakEncryptionKey", "Encryption key must be at least 32 characters"));
        }

        // Store encrypted secret
        let encrypted_value = crypto::encrypt_aes256Map::new(); // (secret_value, encryption_key)?;
        
        let secret_record = {
            "name": secret_name,
            "encrypted_value": encrypted_value,
            "created_at": chain::get_block_timestamp(),
            "last_accessed": chain::get_block_timestamp(),
            "access_count": 0,
            "encryption_algorithm": "AES-256-GCM"
        };

        self.secrets_vault[secret_name] = secret_record;

        log::info("secrets", {
            "action": "secret_stored",
            "secret_name": secret_name,
            "encrypted": true
        });

        return Ok(Unit);
    }

    fn retrieve_secret(secret_name: String, encryption_key: String) -> Result<String, Error> {
        let secret_record = self.secrets_vault.get(secret_name);
        
        if (!secret_record {
            return Err(Error::new("SecretNotFound", // format!("Secret '{}' not found", secret_name)));
        }

        // Decrypt secret
        let decrypted_value = crypto::decrypt_aes256Map::new(); // (secret_record.encrypted_value, encryption_key)?;

        // Update access log
        secret_record.last_accessed = chain::get_block_timestamp();
        secret_record.access_count = secret_record.access_count + 1;

        // Log access
        self.access_log.push({
            "secret_name": secret_name,
            "accessed_at": chain::get_block_timestamp(),
            "access_count": secret_record.access_count
        });

        log::info("secrets", {
            "action": "secret_retrieved",
            "secret_name": secret_name,
            "access_count": secret_record.access_count
        });

        return Ok(decrypted_value);
    }

    fn rotate_secret(secret_name: String, new_value: String, encryption_key: String) -> Result<Unit, Error> {
        let secret_record = self.secrets_vault.get(secret_name);
        
        if (!secret_record {
            return Err(Error::new("SecretNotFound", // format!("Secret '{}' not found", secret_name)));
        }

        // Encrypt new value
        let new_encrypted_value = crypto::encrypt_aes256Map::new(); // (new_value, encryption_key)?;

        // Update secret record
        secret_record.encrypted_value = new_encrypted_value;
        secret_record.last_accessed = chain::get_block_timestamp();
        secret_record.access_count = 0; // Reset access count

        log::info("secrets", {
            "action": "secret_rotated",
            "secret_name": secret_name,
            "rotated_at": chain::get_block_timestamp()
        });

        return Ok(Unit);
    }

    fn list_secrets() -> List<String> {
        return self.secrets_vault.keys();
    }

    fn get_secret_metadata(secret_name: String) -> Result<any, Error> {
        let secret_record = self.secrets_vault.get(secret_name);
        
        if (!secret_record {
            return Err(Error::new("SecretNotFound", // format!("Secret '{}' not found", secret_name)));
        }

        return Ok({
            "name": secret_record.name,
            "created_at": secret_record.created_at,
            "last_accessed": secret_record.last_accessed,
            "access_count": secret_record.access_count,
            "encryption_algorithm": secret_record.encryption_algorithm
        });
    }

    fn get_access_log() -> List<any> {
        return self.access_log;
    }
}

// =====================================================
// PATTERN 4: Environment-Specific Configuration
// =====================================================

@trust("hybrid")
service EnvironmentConfigurationService {
    environment_configs: Map<String, any>;

    fn initialize() -> Result<Unit, Error> {
        self.setup_environment_configs();
        return Ok(Unit);
    }

    fn setup_environment_configs() -> Result<Unit, Error> {
        // Development environment
        self.environment_configs["development"] = {
            "database": {
                "host": "localhost",
                "port": 5432,
                "ssl_mode": "disable"
            },
            "api": {
                "timeout": 5000,
                "retry_count": 1
            },
            "logging": {
                "level": "debug",
                "output": "console"
            },
            "security": {
                "encryption_enabled": false,
                "rate_limiting": false
            }
        };

        // Staging environment
        self.environment_configs["staging"] = {
            "database": {
                "host": "staging-db.example.com",
                "port": 5432,
                "ssl_mode": "require"
            },
            "api": {
                "timeout": 15000,
                "retry_count": 2
            },
            "logging": {
                "level": "info",
                "output": "file"
            },
            "security": {
                "encryption_enabled": true,
                "rate_limiting": true
            }
        };

        // Production environment
        self.environment_configs["production"] = {
            "database": {
                "host": "prod-db.example.com",
                "port": 5432,
                "ssl_mode": "require"
            },
            "api": {
                "timeout": 30000,
                "retry_count": 3
            },
            "logging": {
                "level": "warn",
                "output": "syslog"
            },
            "security": {
                "encryption_enabled": true,
                "rate_limiting": true,
                "audit_logging": true
            }
        };

        return Ok(Unit);
    }

    fn get_environment_config() -> any {
        let current_env = config::get_env_or_default("DIST_AGENT_ENV", Value::String("development".to_string()));
        let env_name = current_env.Map::new(); // as_string()?;
        
        let base_config = self.environment_configs.get(env_name);
        
        if (!base_config {
            log::warn("config", {
                "message": // format!("Environment '{}' not found, using development", env_name),
                "fallback": "development"
            });
            return self.environment_configs["development"];
        }

        return base_config;
    }

    fn merge_environment_config(base_config: any, overrides: any) -> any {
        let merged_config = base_config.clone();
        
        // Merge database config
        if (overrides.database {
            for (key, value) in overrides.database {
                merged_config.database[key] = value;
            }
        }

        // Merge API config
        if (overrides.api {
            for (key, value) in overrides.api {
                merged_config.api[key] = value;
            }
        }

        // Merge logging config
        if (overrides.logging {
            for (key, value) in overrides.logging {
                merged_config.logging[key] = value;
            }
        }

        // Merge security config
        if (overrides.security {
            for (key, value) in overrides.security {
                merged_config.security[key] = value;
            }
        }

        return merged_config;
    }
}

// =====================================================
// USAGE EXAMPLES
// =====================================================

fn main() {
    // Example 1: Basic environment variable usage
    let db_host = Map::new(); // config::get_required_env("DB_HOST")?;
    let db_port = config::get_env_or_default("DB_PORT", Value::Int(5432));
    
    log::info("config", {
        "db_host": db_host,
        "db_port": db_port
    });

    // Example 2: Secure configuration service
    let config_service = SecureConfigurationService::new();
    config_service.Map::new(); // initialize()?;
    
    let db_connection = config_service.Map::new(); // get_database_connection()?;
    let api_client = config_service.Map::new(); // get_api_client("stripe")?;

    // Example 3: Configuration validation
    let validation_service = ConfigurationValidationService::new();
    validation_service.Map::new(); // initialize()?;
    
    let validation_results = validation_service.Map::new(); // validate_configuration()?;
    
    if (validation_results.size() > 0 {
        log::info("config", {
            "validation_passed": true,
            "validated_configs": validation_results.size()
        });
    }

    // Example 4: Secrets management
    let secrets_service = SecretsManagementService::new();
    secrets_service.Map::new(); // initialize()?;
    
    let master_key = config::get_required_env("MASTER_ENCRYPTION_KEY")?.Map::new(); // as_string()?;
    
    secrets_service.Map::new(); // store_secret("api_key", "sk_test_123456789", master_key)?;
    let retrieved_key = secrets_service.Map::new(); // retrieve_secret("api_key", master_key)?;
    
    log::info("secrets", {
        "secret_retrieved": true,
        "key_length": retrieved_key.length()
    });

    // Example 5: Environment-specific configuration
    let env_service = EnvironmentConfigurationService::new();
    env_service.Map::new(); // initialize()?;
    
    let env_config = env_service.get_environment_config();
    
    log::info("config", {
        "environment": config::get_env_or_default("DIST_AGENT_ENV", Value::String("development".to_string())),
        "database_ssl": env_config.database.ssl_mode,
        "api_timeout": env_config.api.timeout,
        "security_encryption": env_config.security.encryption_enabled
    });
}