feat: added counter bin

Cargo.toml

@@ -1,8 +1,17 @@
 [package]
-name = "mood-cgi"
+name = "mood"
 version = "0.1.0"
 edition = "2021"
 
+[[bin]]
+name = "mood.cgi"
+path = "src/cgi.rs"
+
+[[bin]]
+name = "mood-counter"
+path = "src/counter.rs"
+
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

src/counter.rs

@@ -0,0 +1,26 @@
+use std::collections::HashMap;
+
+fn main() {
+	let file = std::env::var("MOOD_FILE").expect("missing MOOD_FILE env variable");
+	let content = std::fs::read_to_string(file).expect("could not read MOOD_FILE contents");
+
+	let lines : Vec<(u64, &str)> = content.lines()
+		.map(|l| l.split_once(' ').unwrap())
+		.map(|(n, l)| (n.parse::<u64>().unwrap(), l))
+		.collect();
+
+	let sum = lines.iter().map(|(x,_)| x).sum::<u64>() as f32;
+	let mut probabilities = HashMap::new();
+
+	for (count, line) in &lines {
+		probabilities.insert(line, *count as f32 / sum);
+	}
+
+	println!("{{");
+	for (line, chance) in probabilities {
+		println!("    \"{}\": {:.6},", line.replace('"', "\\\""), chance);
+	}
+	println!("    \"count\": {},", lines.len());
+	println!("    \"total\": {}", sum);
+	println!("}}");
+}