//! An example to enumerate every realsense compatible device connected to the host machine.

use anyhow::{ensure, Result};
use realsense_rust::{context::Context, device::Device, kind::Rs2CameraInfo};
use std::collections::HashSet;

/// Gets info from a device or returns "N/A" if a provided info parameter doesn't exist for the
/// provided device.
fn match_info(device: &Device, info_param: Rs2CameraInfo) -> String {
    match device.info(info_param) {
        Some(s) => String::from(s.to_str().unwrap()),
        None => String::from("N/A"),
    }
}

fn main() -> Result<()> {
    println!("----\nEnumerating all devices compatible with RealSense:\n----");
    // The below code is the equivalent of creating a HashSet of query_devices that just contains
    // Rs2ProductLine::Any. In other words, this will look for any connected device that is
    // compatible with RealSense.
    let devices = Context::new()?.query_devices(HashSet::new());
    ensure!(!devices.is_empty(), "No devices found");

    for device in devices {
        let name = match_info(&device, Rs2CameraInfo::Name);
        let sn = match_info(&device, Rs2CameraInfo::SerialNumber);
        let fw = match_info(&device, Rs2CameraInfo::FirmwareVersion);
        let rec_fw = match_info(&device, Rs2CameraInfo::RecommendedFirmwareVersion);
        println!(
            ">  {:25} | SN: {:15} | Curr Fw Ver: {:15} | Rec FW Ver: {:15}",
            name, sn, fw, rec_fw
        );
    }
    println!("---");
    Ok(())
}