From 1c57ea891340bc433e04f6dd66ef5c74db815c4c Mon Sep 17 00:00:00 2001
From: Michael Zhang <mail@mzhang.io>
Date: Thu, 10 Aug 2023 12:47:36 -0500
Subject: [PATCH] initial

---
 Cargo.lock        | 644 ++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml        |  13 +
 src/axum_error.rs |  41 +++
 src/lib.rs        |   2 +
 4 files changed, 700 insertions(+)
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/axum_error.rs
 create mode 100644 src/lib.rs

diff --git a/Cargo.lock b/Cargo.lock
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index 0000000..a0f6763
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..f80ad63
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "mzlib"
+version = "0.1.0"
+edition = "2021"
+
+[features]
+default = []
+axum = ["dep:anyhow", "dep:axum"]
+
+[dependencies]
+anyhow = { version = "1.0.72", optional = true }
+axum = { version = "0.6.20", optional = true }
+
diff --git a/src/axum_error.rs b/src/axum_error.rs
new file mode 100644
index 0000000..ad19c41
--- /dev/null
+++ b/src/axum_error.rs
@@ -0,0 +1,41 @@
+use axum::{
+  http::StatusCode,
+  response::{IntoResponse, Response},
+};
+
+#[macro_export]
+macro_rules! bail {
+  ($msg:literal $(,)?) => {
+    return Err(anyhow::anyhow!($msg).into())
+  };
+  ($err:expr $(,)?) => {
+    return Err(anyhow::anyhow!($err).into())
+  };
+  ($fmt:expr, $($arg:tt)*) => {
+    return Err(anyhow::anyhow!($fmt, $($arg)*).into())
+  };
+}
+
+pub type Result<T, E = AppError> = std::result::Result<T, E>;
+
+#[derive(Debug)]
+pub struct AppError(anyhow::Error);
+
+impl IntoResponse for AppError {
+  fn into_response(self) -> Response {
+    (
+      StatusCode::INTERNAL_SERVER_ERROR,
+      format!("Something went wrong: {}", self.0),
+    )
+      .into_response()
+  }
+}
+
+impl<E> From<E> for AppError
+where
+  E: Into<anyhow::Error>,
+{
+  fn from(err: E) -> Self {
+    Self(err.into())
+  }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..7d31aa5
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,2 @@
+#[cfg(feature = "axum")]
+pub mod axum_error;