improve logging of http errors

src/http.rs

@@ -1,20 +1,35 @@
+use crate::misc;
 use std::{fs, io::Write, path::Path, str};
 
 pub fn get_body(url: &str) -> Vec<u8> {
     let mut res: Vec<u8> = Vec::new();
-    let req = http_req::request::Request::new(&url.try_into().unwrap())
+
+    match http_req::request::Request::new(&url.try_into().unwrap())
         .header(
             "User-Agent",
             "AlterWare Launcher | github.com/mxve/alterware-launcher",
         )
         .send(&mut res)
-        .unwrap_or_else(|error| {
-            panic!("\n\n{}:\n{:?}", "Error", error);
-        });
+    {
+        Ok(req) => {
+            if req.status_code() == http_req::response::StatusCode::new(302)
+                || req.status_code() == http_req::response::StatusCode::new(301)
+            {
+                let location = req.headers().get("Location").unwrap().as_str();
+                return get_body(location);
+            }
 
-    if req.status_code() == http_req::response::StatusCode::new(302) {
-        let location = req.headers().get("Location").unwrap().as_str();
-        return get_body(location);
+            if req.status_code() != http_req::response::StatusCode::new(200) {
+                misc::fatal_error(&format!(
+                    "Could not get body from {}, got {}",
+                    url,
+                    req.status_code()
+                ));
+            }
+        }
+        Err(e) => {
+            misc::fatal_error(&format!("Could not get body from {}, got:\n{}", url, e));
+        }
     }
 
     res
@@ -27,10 +42,23 @@ pub fn get_body_string(url: &str) -> String {
 pub fn download_file(url: &str, file_path: &Path) {
     let body = get_body(url);
 
-    let mut f = fs::File::create(file_path).unwrap_or_else(|error| {
-        panic!("\n\n{}:\n{:?}", "Error", error);
-    });
-    f.write_all(&body).unwrap_or_else(|error| {
-        panic!("\n\n{}:\n{:?}", "Error", error);
-    });
+    match fs::File::create(file_path) {
+        Ok(mut file) => match file.write_all(&body) {
+            Ok(_) => (),
+            Err(e) => {
+                misc::fatal_error(&format!(
+                    "Could not write to file {}, got:\n{}",
+                    file_path.to_str().unwrap(),
+                    e
+                ));
+            }
+        },
+        Err(e) => {
+            misc::fatal_error(&format!(
+                "Could not create file {}, got:\n{}",
+                file_path.to_str().unwrap(),
+                e
+            ));
+        }
+    }
 }

src/misc.rs

@@ -1,5 +1,7 @@
 use std::{fs, path::PathBuf};
 
+use colored::Colorize;
+
 pub fn get_file_sha1(path: &PathBuf) -> String {
     let mut sha1 = sha1_smol::Sha1::new();
     sha1.update(&fs::read(path).unwrap());
@@ -18,3 +20,9 @@ pub fn rev_to_int(rev: &str) -> u16 {
         .parse::<u16>()
         .unwrap_or(0)
 }
+
+pub fn fatal_error(error: &str) {
+    println!("\n\n{}:\n{}", "Error".bright_red(), error);
+    stdin();
+    std::process::exit(1);
+}