ffi: add android/build-aar.sh script

Signed-off-by: Yuki Kishimoto <[email protected]>

bindings/nostr-sdk-ffi/.cargo/config.toml

@@ -1,6 +1,6 @@
 [profile.release]
-opt-level = 's'     # Optimize for size.
+opt-level = 's'     # Optimize for size. The `z` level produce a smaller binary but when compressed with upx is smaller the `s` one.
 lto = true          # Enable Link Time Optimization
-codegen-units = 1   # Reduce number of codegen units to increase optimizations.
+codegen-units = 1   # Reduce the number of codegen units to increase optimizations.
 panic = "abort"     # Abort on panic
-strip = "debuginfo" # Partially strip symbols from binary
+strip = "debuginfo" # Partially strip symbols from binary. If fully stripped, UniFFI can't generate foreign-language bindings

bindings/nostr-sdk-ffi/android/build-aar.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+set -exuo pipefail
+
+CDYLIB="libnostr_sdk_ffi.so"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TARGET_DIR="${SCRIPT_DIR}/../../../target"
+ANDROID_MAIN_DIR="${SCRIPT_DIR}/lib/src/main"
+ANDROID_MAIN_KOTLIN_DIR="${ANDROID_MAIN_DIR}/kotlin"
+ANDROID_MAIN_JNI_LIBS_DIR="${ANDROID_MAIN_DIR}/jniLibs"
+FFI_DIR="${SCRIPT_DIR}/../ffi"
+FFI_KOTLIN_DIR="${FFI_DIR}/kotlin"
+FFI_JNI_LIBS_DIR="${FFI_KOTLIN_DIR}/jniLibs"
+FFI_ANDROID_DIR="${FFI_DIR}/android"
+
+# Check if ANDROID_NDK_HOME env is set
+if [ ! -d "${ANDROID_NDK_HOME}" ] ; then \
+  echo "Error: Please, set the ANDROID_NDK_HOME env variable to point to your NDK folder" ; \
+  exit 1 ; \
+fi
+
+# Check if ANDROID_SDK_ROOT env is set
+if [ ! -d "${ANDROID_SDK_ROOT}" ] ; then \
+  echo "Error: Please, set the ANDROID_SDK_ROOT env variable to point to your SDK folder" ; \
+  exit 1 ; \
+fi
+
+# Install deps
+cargo ndk --version || cargo install cargo-ndk
+
+# Clean
+rm -rf "${FFI_KOTLIN_DIR}"
+rm -rf "${FFI_ANDROID_DIR}"
+rm -rf "${ANDROID_MAIN_KOTLIN_DIR}"
+rm -rf "${ANDROID_MAIN_JNI_LIBS_DIR}"
+
+# Install targets
+rustup target add aarch64-linux-android
+rustup target add x86_64-linux-android
+rustup target add armv7-linux-androideabi
+
+# Build targets
+cargo ndk -t aarch64-linux-android -t x86_64-linux-android -t armv7-linux-androideabi -o "${FFI_JNI_LIBS_DIR}" build -p nostr-sdk-ffi --lib --release
+
+# Generate Kotlin bindings
+cargo run -p nostr-sdk-ffi --features uniffi-cli --bin uniffi-bindgen generate --library "${TARGET_DIR}/x86_64-linux-android/release/${CDYLIB}" --language kotlin --no-format -o "${FFI_KOTLIN_DIR}"
+
+# Compress libraries
+upx --best --lzma --android-shlib "${FFI_JNI_LIBS_DIR}"/*/*.so
+
+# Assemble AAR
+mkdir -p "${ANDROID_MAIN_KOTLIN_DIR}"
+cp -r "${FFI_JNI_LIBS_DIR}" "${ANDROID_MAIN_DIR}"
+cp -r "${FFI_KOTLIN_DIR}/rust" "${ANDROID_MAIN_KOTLIN_DIR}"
+"${SCRIPT_DIR}/gradlew" assembleRelease
+
+# Copy AAR to the output dir
+mkdir -p "${FFI_ANDROID_DIR}"
+cp "${SCRIPT_DIR}/lib/build/outputs/aar/lib-release.aar" "${FFI_ANDROID_DIR}"
+
+echo "Done!"

bindings/nostr-sdk-ffi/justfile

@@ -1,58 +1,8 @@
 set windows-shell := ["powershell.exe", "-NoLogo", "-Command"]
 
-# Check if ANDROID_NDK_HOME env is set
-[private]
-ndk-home:
-	@if [ ! -d "${ANDROID_NDK_HOME}" ] ; then \
-		echo "Error: Please, set the ANDROID_NDK_HOME env variable to point to your NDK folder" ; \
-		exit 1 ; \
-	fi
-
-# Check if ANDROID_SDK_ROOT env is set
-[private]
-sdk-root:
-	@if [ ! -d "${ANDROID_SDK_ROOT}" ] ; then \
-		echo "Error: Please, set the ANDROID_SDK_ROOT env variable to point to your SDK folder" ; \
-		exit 1 ; \
-	fi
-
-[private]
-ndk: ndk-home
-    @cargo ndk --version || cargo install cargo-ndk
-
-[private]
-clean-android:
-	rm -rf ffi/android
-	rm -rf ffi/kotlin
-
-[private]
-jni-libs: ndk
-	rustup target add aarch64-linux-android
-	rustup target add x86_64-linux-android
-	rustup target add armv7-linux-androideabi
-	cargo ndk -t aarch64-linux-android -t x86_64-linux-android -t armv7-linux-androideabi -o ffi/kotlin/jniLibs build --lib --release
-
-kotlin: clean-android jni-libs
-	cargo run --features uniffi-cli --bin uniffi-bindgen generate --library ../../target/x86_64-linux-android/release/libnostr_sdk_ffi.so --language kotlin --no-format -o ffi/kotlin
-
-[private]
-compress-android:
-	upx --best --lzma --android-shlib ffi/kotlin/jniLibs/*/*.so
-
-# Copy required modules and libs and assemble AAR
-[private]
-assemble-aar:
-    rm -rf android/lib/src/main/jniLibs
-    rm -rf android/lib/src/main/kotlin
-    cp -r ffi/kotlin/jniLibs android/lib/src/main
-    mkdir -p android/lib/src/main/kotlin/
-    cp -r ffi/kotlin/rust android/lib/src/main/kotlin/
-    cd android && ./gradlew assembleRelease
-    mkdir -p ffi/android
-    cp android/lib/build/outputs/aar/lib-release.aar ffi/android
-
 # Compile and build Android Archive (AAR)
-aar: sdk-root kotlin compress-android assemble-aar
+aar:
+    @cd android && bash build-aar.sh
 
 # Publish android bindings
 [confirm]