Add simple formatting

Cargo.toml

@@ -5,3 +5,9 @@ authors = ["Stan Drozd <drozdziak1@gmail.com>"]
 edition = "2018"
 
 [dependencies]
+reqwest = "0.9.9"
+failure = "0.1.5"
+serde_derive = "1.0.87"
+serde = "1.0.87"
+serde_json = "1.0.38"
+colored = "1.7.0"

src/main.rs

@@ -1,3 +1,69 @@
-fn main() {
-    println!("Hello, world!");
+#[macro_use]
+extern crate failure;
+#[macro_use]
+extern crate serde_derive;
+
+use colored::*;
+use failure::Error;
+use serde::{Deserialize, Deserializer};
+
+fn f64_to_u64_helper<'de, D: Deserializer<'de>>(d: D) -> Result<u64, D::Error> {
+    Ok(f64::deserialize(d)? as u64)
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+struct HsMember {
+    #[serde(deserialize_with = "f64_to_u64_helper")]
+    timestamp: u64,
+    login: String,
+    pretty_time: String,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+struct Response {
+    pub kektops: u16,
+    pub unknown: u16,
+    pub esps: u16,
+    pub users: Vec<HsMember>,
+    pub vms: u16,
+}
+
+fn main() -> Result<(), Error> {
+    let res = reqwest::get("https://at.hackerspace.pl/api")?.text()?;
+
+    let parsed: Response = serde_json::from_str(&res)?;
+
+    let logins: Vec<&str> = parsed
+        .users
+        .iter()
+        .map(|member| member.login.as_str())
+        .collect();
+
+    let members_pretty = if logins.len() > 0 {
+        logins.as_slice().join(" | ")
+    } else {
+        "no-one".to_string()
+    };
+
+    if parsed.users.len() > 0 {
+        println!("{}: {}", "Members".green(), members_pretty);
+    }
+
+    if parsed.unknown > 0 {
+        println!("{}: {}", "Anons".yellow(), parsed.unknown);
+    }
+
+    if parsed.kektops > 0 {
+        println!("{}: {}", "Kektops".blue(), parsed.kektops);
+    }
+
+    if parsed.esps > 0 {
+        println!("{}: {}", "ESPs".blue(), parsed.esps);
+    }
+
+    if parsed.vms > 0 {
+        println!("{}: {}", "VMs".blue(), parsed.vms);
+    }
+
+    Ok(())
 }