nostr: add git_hash_version func

bindings/nostr-ffi/src/lib.rs

@@ -36,6 +36,10 @@ mod ffi {
     pub use crate::types::{Contact, ImageDimensions, Metadata, Profile, Timestamp};
     pub use crate::util::generate_shared_key;
 
+    pub fn git_hash_version() -> String {
+        nostr::git_hash_version().to_string()
+    }
+
     // UDL
     uniffi::include_scaffolding!("nostr");
 }

bindings/nostr-ffi/src/nostr.udl

@@ -2,6 +2,8 @@
 // Distributed under the MIT software license
 
 namespace nostr {
+    string git_hash_version();
+
     [Throws=NostrError]
     sequence<u8> generate_shared_key(SecretKey secret_key, PublicKey public_key);
 

bindings/nostr-sdk-ffi/src/lib.rs

@@ -18,8 +18,8 @@ trait FromResult<T>: Sized {
 mod ffi {
     // External
     pub use nostr_ffi::{
-        generate_shared_key, get_nip05_profile, nip04_decrypt, nip04_encrypt, verify_nip05,
-        ClientMessage, Contact, Event, EventBuilder, EventId, FileMetadata, Filter,
+        generate_shared_key, get_nip05_profile, git_hash_version, nip04_decrypt, nip04_encrypt,
+        verify_nip05, ClientMessage, Contact, Event, EventBuilder, EventId, FileMetadata, Filter,
         ImageDimensions, Keys, Metadata, NostrConnectURI, NostrError, Profile, PublicKey,
         RelayInformationDocument, RelayMessage, SecretKey, Tag, TagEnum, TagKind, TagKindKnown,
         Timestamp, UnsignedEvent, ZapRequestData,

bindings/nostr-sdk-ffi/src/nostr_sdk.udl

@@ -2,6 +2,8 @@
 // Distributed under the MIT software license
 
 namespace nostr_sdk {
+    string git_hash_version();
+
     // Nostr
     [Throws=NostrError]
     sequence<u8> generate_shared_key(SecretKey secret_key, PublicKey public_key);

crates/nostr/build.rs

@@ -0,0 +1,14 @@
+// Copyright (c) 2022-2023 Yuki Kishimoto
+// Distributed under the MIT software license
+
+#[cfg(feature = "std")]
+use std::process::Command;
+
+fn main() {
+    #[cfg(feature = "std")]
+    if let Ok(output) = Command::new("git").args(["rev-parse", "HEAD"]).output() {
+        if let Ok(git_hash) = String::from_utf8(output.stdout) {
+            println!("cargo:rustc-env=GIT_HASH={git_hash}");
+        }
+    }
+}

crates/nostr/src/lib.rs

@@ -61,3 +61,9 @@ pub use self::util::SECP256K1;
 /// Result
 #[cfg(feature = "std")]
 pub type Result<T, E = alloc::boxed::Box<dyn std::error::Error>> = std::result::Result<T, E>;
+
+/// Git Hash
+#[cfg(feature = "std")]
+pub fn git_hash_version() -> &'static str {
+    env!("GIT_HASH")
+}