// FFAndE (Feature Flagging and Experimentation) module
// Processes feature flag configuration rules from Remote Configuration

use pyo3::prelude::*;
use tracing::debug;

/// Process feature flag configuration rules.
///
/// This function receives raw bytes containing the configuration data from
/// Remote Configuration and processes it through the FFAndE system.
///
/// # Arguments
/// * `config_bytes` - Raw bytes containing the configuration data (typically JSON)
///
/// # Returns
/// * `Some(true)` - Configuration was successfully processed
/// * `Some(false)` - Configuration processing failed
/// * `None` - An error occurred during processing
#[pyfunction]
pub fn ffande_process_config(config_bytes: &[u8]) -> PyResult<Option<bool>> {
    debug!(
        "Processing FFE configuration, size: {} bytes",
        config_bytes.len()
    );

    // Validate input
    if config_bytes.is_empty() {
        debug!("Received empty configuration bytes");
        return Ok(Some(false));
    }

    // TODO: Implement actual FFAndE processing logic
    // For now, this is a stub that logs the received data

    // Attempt to validate as UTF-8 (since it's likely JSON)
    match std::str::from_utf8(config_bytes) {
        Ok(config_str) => {
            debug!(
                "Received valid UTF-8 configuration: {}",
                if config_str.len() > 100 {
                    &config_str[..100]
                } else {
                    config_str
                }
            );
            // Successfully received and validated configuration
            Ok(Some(true))
        }
        Err(e) => {
            debug!("Configuration is not valid UTF-8: {}", e);
            // Invalid UTF-8, but we still received data
            Ok(Some(false))
        }
    }
}
