From d9f4fad175862369bdd3447fb1174d32b63a9515 Mon Sep 17 00:00:00 2001
From: Andreas Coroiu <andreas.coroiu@gmail.com>
Date: Mon, 21 Oct 2024 11:26:21 +0200
Subject: [PATCH] feat: implement dynamic build-version variable

---
 crates/bitwarden-wasm-internal/build.rs      | 52 ++++++++++++++++++++
 crates/bitwarden-wasm-internal/src/client.rs |  2 +-
 2 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 crates/bitwarden-wasm-internal/build.rs

diff --git a/crates/bitwarden-wasm-internal/build.rs b/crates/bitwarden-wasm-internal/build.rs
new file mode 100644
index 0000000..eca0705
--- /dev/null
+++ b/crates/bitwarden-wasm-internal/build.rs
@@ -0,0 +1,52 @@
+use std::{env, process::Command};
+
+fn main() {
+    // Use the SDK_VERSION environment variable if it is set (e.g. by CI) or get it from Git
+    let sdk_version = env::var("SDK_VERSION")
+        .or_else(|_| version_from_git_info())
+        .unwrap_or("unknown".to_string());
+
+    println!("cargo:rustc-env=SDK_VERSION={sdk_version}");
+    println!("cargo:rustc-env=CARGO_PKG_VERSION={sdk_version}");
+}
+
+fn run(args: &[&str]) -> Result<String, std::io::Error> {
+    let out = Command::new(args[0]).args(&args[1..]).output()?;
+    if !out.status.success() {
+        use std::io::{Error, ErrorKind};
+        return Err(Error::new(ErrorKind::Other, "Command not successful"));
+    }
+    Ok(String::from_utf8(out.stdout).unwrap().trim().to_string())
+}
+
+/// This method reads info from Git, namely tags, branch, and revision
+/// To access these values, use:
+///    - `env!("GIT_EXACT_TAG")`
+///    - `env!("GIT_BRANCH")`
+///    - `env!("GIT_REV")`
+fn version_from_git_info() -> Result<String, std::io::Error> {
+    // The exact tag for the current commit, can be empty when
+    // the current commit doesn't have an associated tag
+    let exact_tag = run(&["git", "describe", "--abbrev=0", "--tags", "--exact-match"]).ok();
+    if let Some(ref exact) = exact_tag {
+        println!("cargo:rustc-env=GIT_EXACT_TAG={exact}");
+    }
+
+    // The current branch name
+    let branch = run(&["git", "rev-parse", "--abbrev-ref", "HEAD"])?;
+    println!("cargo:rustc-env=GIT_BRANCH={branch}");
+
+    // The current git commit hash
+    let rev = run(&["git", "rev-parse", "HEAD"])?;
+    let rev_short = rev.get(..8).unwrap_or_default();
+    println!("cargo:rustc-env=GIT_REV={rev_short}");
+
+    // Combined version
+    if let Some(exact) = exact_tag {
+        Ok(exact)
+    } else if &branch != "main" && &branch != "master" && &branch != "HEAD" {
+        Ok(format!("{rev_short} ({branch})"))
+    } else {
+        Ok(format!("{rev_short}"))
+    }
+}
diff --git a/crates/bitwarden-wasm-internal/src/client.rs b/crates/bitwarden-wasm-internal/src/client.rs
index f85c2c5..a824b42 100644
--- a/crates/bitwarden-wasm-internal/src/client.rs
+++ b/crates/bitwarden-wasm-internal/src/client.rs
@@ -50,7 +50,7 @@ impl BitwardenClient {
     }
 
     pub fn version(&self) -> String {
-        "PM-12989-create-process-for-qa-to-build-client-with-particular-sdk-version".to_owned()
+        env!("SDK_VERSION").to_owned()
     }
 
     pub fn throw(&self, msg: String) -> Result<(), crate::error::GenericError> {