# Process Monitor

Simple Windows C++ application that checks running processes every 30 seconds
and sends one HTTP heartbeat with all matching processes.

## What it does

- Enumerates running Windows processes via ToolHelp API
- Finds processes by partial name match
- Sends one JSON payload with all currently matched processes
- Builds with CMake without external runtime dependencies

## Expected payload

The application sends HTTP `POST` with `Content-Type: application/json`.

```json
{
  "machine_name": "PC-01",
  "status": "running",
  "detected_at": "2026-03-27T12:34:56Z",
  "processes": ["notepad.exe", "notepad++.exe"]
}
```

If `api_token` is set, request header `Authorization: Bearer <token>` is added.

If no process matches in a cycle, the application still sends a heartbeat, but without the `processes` field:

```json
{
  "machine_name": "PC-01",
  "status": "running",
  "detected_at": "2026-03-27T12:34:56Z"
}
```

## Configuration

Edit `process-monitor.conf`.

```ini
api_url=http://10.0.0.147/hb/api
api_token=
machine_name=
interval_seconds=30
request_timeout_seconds=2
process_names=fortnite,chrome,discord,steam
```

Notes:

- `machine_name` is optional; if empty, Windows computer name is used
- `process_names` is a comma-separated list of substrings to search in executable names
- `interval_seconds` can be changed from the default `30`
- `request_timeout_seconds` sets WinHTTP connect/send/receive timeout in seconds

## Build

Developer Command Prompt for Visual Studio:

```powershell
cmake -S . -B build
cmake --build build --config Release
```

Or with Ninja if you have a compiler environment ready:

```powershell
cmake -S . -B build -G Ninja
cmake --build build
```

## Run

```powershell
.\build\Release\process-monitor.exe
```

Or specify custom config path:

```powershell
.\build\Release\process-monitor.exe .\my-config.conf
```

## Next useful improvements

- Run as Windows service
- Add retry/backoff for failed API calls
- Add richer payload items if your API needs both matched pattern and actual process name
- Load config from JSON/YAML if richer metadata is needed