From 3c4a278db3e5b9696269caefad2bfaa79578704c Mon Sep 17 00:00:00 2001
From: Fuwn <contact@fuwn.me>
Date: Wed, 9 Mar 2022 19:04:17 -0800
Subject: refactor: use vergen for build variables

---
 Cargo.toml       |  7 +++++++
 build.rs         | 30 ++----------------------------
 src/constants.rs |  2 +-
 src/lib.rs       |  2 +-
 src/utils.rs     |  2 +-
 5 files changed, 12 insertions(+), 31 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 6d38c68..0f5308d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,3 +45,10 @@ lazy_static = "1.4.0"
 
 # Web
 reqwest = { version = "0.11.9", features = ["json"] }
+
+[build-dependencies]
+# Build variables
+vergen = "6.0.2"
+
+# `Result`
+anyhow = "1.0.56"
diff --git a/build.rs b/build.rs
index a6f53ae..ce2f258 100644
--- a/build.rs
+++ b/build.rs
@@ -16,32 +16,6 @@
 // Copyright (C) 2022-2022 Fuwn <contact@fuwn.me>
 // SPDX-License-Identifier: GPL-3.0-only
 
-use std::env::var;
-
-/// <https://github.com/denoland/deno/blob/main/cli/build.rs#L265:L285>
-fn git_commit_hash() -> String {
-  if let Ok(output) = std::process::Command::new("git")
-    .arg("rev-list")
-    .arg("-1")
-    .arg("HEAD")
-    .output()
-  {
-    if output.status.success() {
-      std::str::from_utf8(&output.stdout[..40])
-        .unwrap()
-        .to_string()
-    } else {
-      "UNKNOWN".to_string()
-    }
-  } else {
-    "UNKNOWN".to_string()
-  }
-}
-
-fn main() {
-  println!("cargo:rerun-if-changed=build.rs");
-  println!("cargo:rustc-env=GIT_COMMIT_HASH={}", git_commit_hash());
-  println!("cargo:rerun-if-env-changed=GIT_COMMIT_HASH");
-  println!("cargo:rustc-env=TARGET={}", var("TARGET").unwrap());
-  println!("cargo:rustc-env=PROFILE={}", var("PROFILE").unwrap());
+fn main() -> anyhow::Result<()> {
+  vergen::vergen(vergen::Config::default())
 }
diff --git a/src/constants.rs b/src/constants.rs
index b5fb1e0..6f3e6e4 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -24,7 +24,7 @@ lazy_static::lazy_static! {
       include_str!("index.rst"),
       format_args!(
         "https://github.com/senpy-club/api-worker/tree/{}",
-        env!("GIT_COMMIT_HASH"),
+        env!("VERGEN_GIT_SHA"),
       )
     )
   };
diff --git a/src/lib.rs b/src/lib.rs
index 229472a..e5661dc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -62,7 +62,7 @@ pub async fn main(
     .get("/v2/version", |_, _| {
       Response::from_json(&serde_json::json!({
         "crate_version": env!("CARGO_PKG_VERSION"),
-        "git_commit_hash": env!("GIT_COMMIT_HASH"),
+        "git_commit_hash": env!("VERGEN_GIT_SHA"),
       }))?
       .with_cors(&utils::cors())
     })
diff --git a/src/utils.rs b/src/utils.rs
index d48ff34..8bb70da 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -28,7 +28,7 @@ pub async fn github_api(
     .get(constants::GITHUB_API_ENDPOINT)
     .header(
       "User-Agent",
-      format!("senpy-club/api-worker - {}", env!("GIT_COMMIT_HASH")),
+      format!("senpy-club/api-worker - {}", env!("VERGEN_GIT_SHA")),
     );
 
   if std::env::var("GITHUB_TOKEN").is_ok() {
-- 
cgit v1.2.3