Implement Config Option for Term Frequency Threshold

src/main.rs

@@ -26,7 +26,13 @@ fn main() -> Result<(), io::Error> {
     let markov_chain = build_markov_chain("../../data/data.csv")
                         .unwrap_or(build_markov_chain("data.csv")
                             .unwrap_or_default());
-    let filtered_markov_chain = filter_markov_chain(&markov_chain,2);
+
+
+    let term_frequency_threshold = match config.get("term_frequency_threshold") {
+        Some(toml::Value::Integer(n)) if *n >= 0 => *n as usize,
+        _ => 2
+    };
+    let filtered_markov_chain = filter_markov_chain(&markov_chain,term_frequency_threshold);
 
     // Print the Markov Chain for verification
     for (key, values) in &markov_chain {