Implemented request to update the records.

src/ip_handler/mod.rs

@@ -1,9 +1,9 @@
 use serde::Deserialize;
-use std::fs::File;
-use std::io::{Read, Write};
+use std::fs::{read_to_string, File};
+use std::io::Write;
 use std::path::Path;
 
-const FILE_NAME: &'static str = "ddns_ip";
+const IP_FILE_NAME: &'static str = "ddns_ip";
 const WEBSITE_URL: &'static str = "https://httpbin.org/ip";
 
 #[derive(Deserialize)]
@@ -13,16 +13,14 @@ struct IP {
 
 /// Returns an Option holding the current IP address if the value has changed, otherwise returns None.
 pub async fn get_ip_to_publish() -> Option<String> {
-    let current_ip = check_current_ip()
-        .await
-        .expect("Error getting the current IP.");
-
     let previous_ip = match check_previous_ip() {
         Some(x) => x,
         None => String::new(),
     };
 
-    println!("Current IP: {}, Previous IP: {}", current_ip, previous_ip);
+    let current_ip = check_current_ip()
+        .await
+        .expect("Error getting the current IP.");
 
     if current_ip.eq(&previous_ip) {
         return None;
@@ -47,22 +45,21 @@ async fn check_current_ip() -> Result<String, Box<dyn std::error::Error>> {
 /// # Arguments
 ///
 /// * `current_ip` - A &str holding the current IP value.
-fn record_current_ip(current_ip: &str) {
-    let mut file = File::create(FILE_NAME).expect("Error creating file.");
+fn record_current_ip(current_ip: &str) -> () {
+    let mut file = File::create(IP_FILE_NAME).expect("Error creating file.");
     file.write_all(current_ip.as_ref())
         .expect("Error writing file.");
 }
 
 /// Reads the current IP value from the FILE_NAME and returns it.
 fn check_previous_ip() -> Option<String> {
-    if !Path::new(FILE_NAME).exists() {
+    let path = Path::new(IP_FILE_NAME);
+
+    if !path.exists() {
         return None;
     }
 
-    let mut file = File::open(FILE_NAME).ok()?;
-    let mut contents = String::new();
-    file.read_to_string(&mut contents)
-        .expect("Error reading file.");
+    let contents = read_to_string(path).expect("Error reading file.");
 
-    return Some(contents);
+    Some(contents)
 }