Merge pull request #783 from breez/flutter-ios-dynamic-linking

Link bindings dynamically in iOS Flutter plugin

.github/workflows/publish-all-platforms.yml

@@ -246,6 +246,7 @@ jobs:
   publish-flutter:
     needs:
       - setup
+      - build-language-bindings
     if: ${{ needs.setup.outputs.flutter == 'true' }}
     uses: ./.github/workflows/publish-flutter.yml
     with:

.github/workflows/publish-flutter.yml

@@ -61,12 +61,17 @@ jobs:
           cp ../breez-sdk/libs/sdk-flutter/pubspec.yaml .
           cp ../breez-sdk/libs/sdk-flutter/pubspec.lock .
 
+      - uses: actions/download-artifact@v3
+        with:
+          name: bindings-swift
+          path: flutter/ios/bindings-swift/Sources/BreezSDK/
+
       - name: Set package version
         working-directory: flutter
         run: |
           sed -i.bak -e 's/version:.*/version: ${{ inputs.package-version }}/' pubspec.yaml
           sed -i.bak -e "s/^version .*/version '${{ inputs.package-version }}'/" android/build.gradle
-          sed -i.bak -e "s/s.version          = .*/s.version          = '${{ inputs.package-version }}'/" ios/breez_sdk.podspec
+          sed -i.bak -e "s/^tag_version = .*/tag_version = '${{ inputs.package-version }}'/" ios/breez_sdk.podspec
           rm pubspec.yaml.bak
           rm android/build.gradle.bak
           rm ios/breez_sdk.podspec.bak

libs/sdk-flutter/ios/breez_sdk.podspec.production

@@ -1,8 +1,23 @@
-# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
-# Run `pod lib lint breez_sdk.podspec` to validate before publishing.
+tag_version = '0.2.15'
+framework = 'breez_sdkFFI.xcframework'
+lib_name = "breez-sdkFFI.#{tag_version}"
+url = "https://github.com/breez/breez-sdk-swift/releases/download/#{tag_version}/#{framework}.zip"
+frameworks_dir = 'bindings-swift'
+
+`
+if [ ! -d #{frameworks_dir}/#{framework} ]; then
+    mkdir -p #{frameworks_dir}
+    curl -L #{url} -o #{frameworks_dir}/#{lib_name}.zip
+    cd #{frameworks_dir}
+    unzip #{lib_name}.zip
+    rm -rf __MACOSX
+    rm #{lib_name}.zip
+fi
+`
+
 Pod::Spec.new do |s|
   s.name             = 'breez_sdk'
-  s.version          = '0.2.15'
+  s.version          = "#{tag_version}"
   s.summary          = 'BreezSDK flutter plugin.'
   s.description      = <<-DESC
   BreezSDK flutter plugin.
@@ -12,12 +27,12 @@ Pod::Spec.new do |s|
   s.author           = { 'Breez' => '[email protected]' }
   s.source           = { :git => "https://github.com/breez/breez-sdk-flutter.git", :tag => "#{s.version}" }
   s.source_files = 'Classes/**/*'
+  s.on_demand_resources = { 'BreezSDK' => 'bindings-swift/Sources/BreezSDK/BreezSDK.swift' }
   s.dependency 'Flutter'
   s.platform = :ios, '11.0'
-  s.static_framework = true
 
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = {'STRIP_STYLE' => 'non-global', 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
   s.swift_version = '5.0'
-  s.dependency "BreezSDK", "#{s.version}"
+  s.vendored_frameworks = "#{frameworks_dir}/#{framework}"
 end

libs/sdk-flutter/lib/native_toolkit.dart

@@ -5,6 +5,7 @@ import 'bridge_generated.dart';
 BreezSdkCore? _breezSDK;
 
 const _libName = "libbreez_sdk_bindings.so";
+const _iosLibName = "breez_sdk";
 
 class UnsupportedPlatform implements Exception {
   UnsupportedPlatform(String s);
@@ -16,8 +17,11 @@ BreezSdkCore getNativeToolkit() {
       // On Linux the lib needs to be in LD_LIBRARY_PATH or working directory
       _breezSDK = BreezSdkCoreImpl(DynamicLibrary.open(_libName));
     } else if (Platform.isIOS || Platform.isMacOS) {
-      // iOS and macOS are statically linked
-      _breezSDK = BreezSdkCoreImpl(DynamicLibrary.process());
+      try {
+        _breezSDK = BreezSdkCoreImpl(DynamicLibrary.open("$_iosLibName.framework/$_iosLibName"));
+      } catch (e) {
+        _breezSDK = BreezSdkCoreImpl(DynamicLibrary.process());
+      }
     } else {
       throw UnsupportedPlatform('${Platform.operatingSystem} is not yet supported!');
     }

libs/sdk-flutter/pubspec.yaml

@@ -1,7 +1,7 @@
 name: breez_sdk
-description: A new flutter plugin project.
+description: Flutter bindings for the Breez SDK
+repository: https://github.com/breez/breez-sdk-flutter
 version: 0.2.15
-publish_to: none
 
 environment:
   sdk: '>=3.0.0 <4.0.0'