added functionality to load environment variables

src/config.rs

@@ -1,4 +1,5 @@
 use std::env;
+use std::ops::Deref;
 
 use config::File;
 use serde::Deserialize;
@@ -22,7 +23,7 @@ impl Configuration {
             // this case is currently untested
             "windows" => {
                 location.push(String::from("config.json"));
-                location.push(String::from("{:?}/AppData/Roaming/gt/config.json"))
+                location.push(format!("{:?}/AppData/Roaming/gt/config.json", home_dir_env))
             },
             // this case is currently untested
             "macos" => {
@@ -49,6 +50,41 @@ impl Configuration {
 
         config
     }
+    
+    pub fn load_envs(&mut self) {
+        // get environment variables
+        let username_env = env::var("GT_USERNAME").unwrap_or_else(|_| "".to_string());
+        let password_env = env::var("GT_PASSWORD").unwrap_or_else(|_| "".to_string());
+        let api_token_env = env::var("GT_API_TOKEN").unwrap_or_else(|_| "".to_string());
+
+        // get struct fields
+        let mut user_config = self.username.as_ref().unwrap();
+        let mut password_config = self.password.as_ref().unwrap();
+        let mut api_token_config = self.api_token.as_ref().unwrap();
+
+        // check and see if the env vars are empty
+        // if they are not, put the env vars in place of the config property
+        if username_env != "".to_string() {
+            self.username = Some(username_env);
+        } else {
+            println!("cannot find username env var");
+        }
+ 
+        if password_env != "".to_string() {
+            password_config = &password_env.deref().to_string();
+        } else {
+            println!("cannot find password env var");
+        }
+
+        if api_token_env != "".to_string() {
+            api_token_config = &api_token_env.deref().to_string();
+        } else {
+            println!("cannot find api token env var");
+        }
+
+        println!("{:?}", &self);
+
+    }
 }
 
 impl Default for Configuration {

src/main.rs

@@ -16,7 +16,8 @@ use clap::ArgMatches;
 
 fn main() {
     let matches: ArgMatches = arg::get_args();
-    let config = crate::config::Configuration::new();
+    let mut config = crate::config::Configuration::new();
+    config.load_envs();
     let auth = request::Authentication::new(&config);
     let request = auth.request_chooser(config.clone(), matches);
 
@@ -47,11 +48,11 @@ fn main() {
             }
 
             if repo_matches.is_present("push") {
-                repo.push_to_remote(&request)
+                repo.push_to_remote(&request, &config)
             }
 
             if repo_matches.is_present("pull") {
-                repo.pull_from_remote(&request)
+                repo.pull_from_remote(&request, &config)
             }
 
             if repo_matches.is_present("clone") {