use crate::BridgeInfo;
use std::collections::HashSet;

/// Provides a function for predicting which countries block this bridge
pub trait Analyzer {
    fn blocked_in(&self, bridge_info: &BridgeInfo, confidence: f64) -> HashSet<String>;
}

pub struct ExampleAnalyzer {}

/// Dummy example which just tells us about blockages we already know about
impl Analyzer for ExampleAnalyzer {
    fn blocked_in(&self, bridge_info: &BridgeInfo, confidence: f64) -> HashSet<String> {
        let mut blocked_in = HashSet::<String>::new();
        for (country, info) in &bridge_info.info_by_country {
            if info.blocked {
                blocked_in.insert(country.to_string());
            }
        }
        blocked_in
    }
}