Add macros crate for utility macros

packages/backend/Cargo.lock

@@ -15,6 +15,7 @@ dependencies = [
  "config",
  "lazy_static",
  "logging",
+ "macros",
  "queue",
  "server",
 ]
@@ -63,6 +64,13 @@ dependencies = [
  "config",
 ]
 
+[[package]]
+name = "macros"
+version = "0.1.0"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.17.1"

packages/backend/Cargo.toml

@@ -21,6 +21,7 @@ server = { path = "crates/server" }
 logging = { path = "crates/logging" }
 queue  = { path = "crates/queue" }
 config = { path = "crates/config" }
+macros = { path = "crates/macros" }
 lazy_static = "1.4.0"
 
 [dev-dependencies]

packages/backend/crates/macros/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "macros"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+lazy_static = "1.4.0"

packages/backend/crates/macros/src/environment.rs

@@ -0,0 +1,54 @@
+#![macro_use]
+
+use std::env;
+
+use lazy_static::lazy_static;
+
+#[derive(PartialEq)]
+pub enum EnvType {
+    Release,
+    Debug,
+    Test,
+}
+
+lazy_static! {
+    pub static ref NODE_ENV: EnvType = init_env_type();
+}
+
+#[macro_export]
+macro_rules! node_env {
+    () => {
+        *macros::environment::NODE_ENV
+    };
+}
+
+#[macro_export]
+macro_rules! is_debug {
+    () => {
+        macros::node_env!() == macros::environment::EnvType::Debug
+    };
+}
+
+#[macro_export]
+macro_rules! is_release {
+    () => {
+        macros::node_env!() == macros::environment::EnvType::Release
+    };
+}
+
+#[macro_export]
+macro_rules! is_test {
+    () => {
+        macros::node_env!() == macros::environment::EnvType::Test
+    };
+}
+
+fn init_env_type() -> EnvType {
+    use EnvType::*;
+    match env::var("NODE_ENV") {
+        Ok(s) if s == *"production" => Release,
+        Ok(s) if s == *"development" => Debug,
+        Ok(s) if s == *"test" => Test,
+        _ => Debug,
+    }
+}

packages/backend/crates/macros/src/lib.rs

@@ -0,0 +1,3 @@
+pub mod environment;
+
+//pub use environment::*;

packages/backend/src/main.rs

@@ -3,7 +3,8 @@ use std::{
     path::{Path, PathBuf},
 };
 
-extern crate config;
+#[macro_use]
+extern crate macros;
 
 fn main() -> Result<(), Box<dyn error::Error>> {
     env::set_var(