file read, json parse

src/main.rs

@@ -1,3 +1,46 @@
+use std::collections::HashMap;
+use std::fs::File;
+use std::io::{ErrorKind, Read};
+use std::path::Path;
+use std::process::exit;
+
 fn main() {
-    println!("Hello, world!");
+    let data_file = Path::new("data.json");
+    get_json(data_file);
+    
 }
+
+fn get_json(path: &Path) -> HashMap<String, String> {
+    let mut data = HashMap::new();
+    let json_data = read_file(path);
+    
+    // fixme
+    let parsed_data = json::parse(json_data.as_str()).unwrap();
+    println!("{}", parsed_data);
+    
+    data
+}
+
+fn read_file(path: &Path) -> String {
+    let read_result = File::open(path);
+    let mut result= String::new();
+    
+    match read_result {
+        Ok(mut t) => {
+            // file exists
+            println!("[INFO] JSON file located, reading ...");
+            match t.read_to_string(&mut result) { 
+                // handling the reading
+                Ok(_r) => result,
+                Err(e) => panic!("[ERROR] While reading the file: {e}"),
+            }
+        },
+        Err(err) => match err.kind() {
+            ErrorKind::NotFound => {
+                println!("[ERROR] {} does not exist", path.display());
+                exit(1);
+            },
+            _ => panic!("[ERROR] Unexpected error, closing ..."),
+        }
+    }
+}