# Hardcoded Values Removed - Configuration Summary

## ✅ All Hardcoded Values Converted to Configuration

### **1. SystemD Nginx Check Interval**
- **Before**: `nginx_check_interval_seconds: 30` (hardcoded)
- **After**: `nginx_check_interval_seconds: config.nginx_check_interval_seconds`
- **NixOS Config**: `nginx_check_interval_seconds = 30;`

### **2. ZMQ Transmission Interval**  
- **Before**: `Duration::from_secs(1)` (hardcoded)
- **After**: `Duration::from_secs(self.config.zmq.transmission_interval_seconds)`
- **NixOS Config**: `transmission_interval_seconds = 1;`

### **3. HTTP Timeouts in SystemD Collector**
- **Before**: 
  ```rust
  .timeout(Duration::from_secs(10))
  .connect_timeout(Duration::from_secs(10))
  ```
- **After**:
  ```rust
  .timeout(Duration::from_secs(self.config.http_timeout_seconds))
  .connect_timeout(Duration::from_secs(self.config.http_connect_timeout_seconds))
  ```
- **NixOS Config**: 
  ```nix
  http_timeout_seconds = 10;
  http_connect_timeout_seconds = 10;
  ```

## **Configuration Structure Changes**

### **SystemdConfig** (agent/src/config/mod.rs)
```rust
pub struct SystemdConfig {
    // ... existing fields ...
    pub nginx_check_interval_seconds: u64,      // NEW
    pub http_timeout_seconds: u64,              // NEW
    pub http_connect_timeout_seconds: u64,      // NEW
}
```

### **ZmqConfig** (agent/src/config/mod.rs)
```rust
pub struct ZmqConfig {
    // ... existing fields ...
    pub transmission_interval_seconds: u64,     // NEW
}
```

## **NixOS Configuration Updates**

### **ZMQ Section** (hosts/common/cm-dashboard.nix)
```nix
zmq = {
  # ... existing fields ...
  transmission_interval_seconds = 1;           # NEW
};
```

### **SystemD Section** (hosts/common/cm-dashboard.nix)
```nix
systemd = {
  # ... existing fields ...
  nginx_check_interval_seconds = 30;           # NEW  
  http_timeout_seconds = 10;                   # NEW
  http_connect_timeout_seconds = 10;           # NEW
};
```

## **Benefits**

✅ **No hardcoded values** - All timing/timeout values configurable  
✅ **Consistent configuration** - Everything follows NixOS config pattern  
✅ **Environment-specific tuning** - Can adjust timeouts per deployment  
✅ **Maintainability** - No magic numbers scattered in code  
✅ **Testing flexibility** - Can configure different values for testing  

## **Runtime Behavior**

All previously hardcoded values now respect configuration:
- **Nginx latency checks**: Every 30s (configurable)
- **ZMQ transmission**: Every 1s (configurable)  
- **HTTP requests**: 10s timeout (configurable)
- **HTTP connections**: 10s timeout (configurable)

The codebase is now **100% configuration-driven** with no hardcoded timing values.