#![warn(missing_docs)]
use crate::lightdata::LightData;
use crate::{
    error::OpossumError,
    optic_node::{Dottable, LightResult, Optical},
    optic_ports::OpticPorts,
};
use std::collections::HashMap;
use std::fmt::Debug;

type Result<T> = std::result::Result<T, OpossumError>;

#[derive(Default)]
/// This node represents an universal detector (so far for test / debugging purposes).
///
/// Any [`LightData`] coming in will be stored internally for later display / export.
///
/// ## Optical Ports
///   - Inputs
///     - `in1`
///   - Outputs
///     - `out1`
/// 
/// During analysis, the output port contains a replica of the input port similar to a [`Dummy`](crate::nodes::Dummy) node. This way, 
/// different dectector nodes can be "stacked" or used somewhere in between arbitrary optic nodes.
pub struct Detector {
    light_data: Option<LightData>,
}
impl Optical for Detector {
    fn node_type(&self) -> &str {
        "detector"
    }
    fn ports(&self) -> OpticPorts {
        let mut ports = OpticPorts::new();
        ports.add_input("in1").unwrap();
        ports.add_output("out1").unwrap();
        ports
    }
    fn analyze(
        &mut self,
        incoming_data: LightResult,
        _analyzer_type: &crate::analyzer::AnalyzerType,
    ) -> Result<LightResult> {
        if let Some(data) = incoming_data.get("in1") {
            self.light_data = data.clone();
            Ok(HashMap::from([("out1".into(), data.clone())]))
        } else {
            Ok(HashMap::from([("out2".into(), None)]))
        }
    }
    fn export_data(&self, file_name: &str) {
        if let Some(data) = &self.light_data {
            data.export(file_name)
        }
    }
    fn is_detector(&self) -> bool {
        true
    }
}

impl Debug for Detector {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match &self.light_data {
            Some(data) => write!(f, "{}", data),
            None => write!(f, "no data"),
        }
    }
}
impl Dottable for Detector {
    fn node_color(&self) -> &str {
        "lemonchiffon"
    }
}