add nix flake

- Remove unnecessary return statement in auth module
- Comment out unused 'code' field in ResponseError struct
- Improve readme formatting with proper markdown
- Update dependencies in Cargo.lock
- Add Makefile with DNS record update automation commands

Makefile

@@ -0,0 +1,21 @@
+.PHONY: public private sbw
+
+all: public private sbw
+
+public:
+	cargo run delete --record-type a --domain publicmatt.com --name "@"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain publicmatt.com --name "@" --data {}
+	cargo run delete --record-type a --domain publicmatt.com --name "*"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain publicmatt.com --name "*" --data {}
+
+sbw:
+	cargo run delete --record-type a --domain sailboatworld.com --name "@"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain sailboatworld.com --name "@" --data {}
+	cargo run delete --record-type a --domain sailboatworld.com --name "*"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain sailboatworld.com --name "*" --data {}
+
+private:
+	cargo run delete --record-type a --domain privatematt.com --name "@"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain privatematt.com --name "@" --data {}
+	cargo run delete --record-type a --domain privatematt.com --name "*"
+	curl ipinfo.io/ip | xargs -I {} cargo run update --record-type a --domain privatematt.com --name "*" --data {}

flake.nix

@@ -0,0 +1,41 @@
+{
+  description = "GoDaddy DDNS — update A records via REST";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        packages.default = pkgs.rustPlatform.buildRustPackage {
+          pname = "godaddy_ddns";
+          version = "0.1.0";
+          src = ./.;
+          cargoLock.lockFile = ./Cargo.lock;
+
+          nativeBuildInputs = [ pkgs.pkg-config ];
+          buildInputs = [ pkgs.openssl ]
+            ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
+              pkgs.darwin.apple_sdk.frameworks.Security
+              pkgs.darwin.apple_sdk.frameworks.SystemConfiguration
+            ];
+
+          doCheck = false;
+        };
+
+        devShells.default = pkgs.mkShell {
+          packages = [
+            pkgs.cargo
+            pkgs.rustc
+            pkgs.rustfmt
+            pkgs.clippy
+            pkgs.pkg-config
+            pkgs.openssl
+          ];
+        };
+      });
+}

readme.md

@@ -1,10 +1,13 @@
 # GoDaddy DDNS
+
 ![godaddy-ddns](https://user-images.githubusercontent.com/4237627/147422997-f72018be-7f60-4e56-9a52-d2ac81e0dbd5.png)
 
 ## What is this?
+
 It's a Rust application to update GoDaddy DNS Records via REST API.
 
 ## Usage
+
 It order for the application to work, there needs to be:
 
 * Environment variables:
@@ -12,7 +15,7 @@ It order for the application to work, there needs to be:
   * `KEY` - GoDaddy API Key
   * `SECRET` - GoDaddy API SECRET
 
-Info about how to generate the **KEY** and the **SECRET** can be found here: https://developer.godaddy.com/getstarted 
+Info about how to generate the **KEY** and the **SECRET** can be found here: <https://developer.godaddy.com/getstarted>
 
 * A file called `records.json` placed in `$HOME/.godaddy-ddns` with the following structure:
 
@@ -64,6 +67,3 @@ Example of use (with a given IP of 8.8.8.8) :
 }
 ```
 
-
-
- 

src/auth/mod.rs

@@ -12,6 +12,6 @@ pub struct Auth {
 impl Auth {
     pub fn as_header(&self) -> String {
         let header = format!("sso-key {}:{}", self.key, self.secret);
-        return header;
+        header
     }
 }

src/godaddy/api.rs

@@ -12,7 +12,7 @@ pub enum Api {
 
 #[derive(Deserialize, Debug)]
 pub struct ResponseError {
-    pub code: String,
+    // pub code: String,
     pub message: String,
     pub fields: Vec<ResponseField>,
 }