Add CI workflow for building PR artifacts across pla…

.github/actions/flutter-prepare/action.yml

@@ -0,0 +1,27 @@
+name: Flutter Prepare
+description: Set up Flutter from .flutter_version and fetch dependencies.
+
+inputs:
+  app-dir:
+    description: Path to the Flutter application directory.
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Read Flutter version
+      id: flutter_version
+      shell: bash
+      run: echo "version=$(cat ${{ inputs.app-dir }}/.flutter_version)" >> "$GITHUB_OUTPUT"
+
+    - name: Set up Flutter
+      uses: subosito/flutter-action@v2
+      with:
+        channel: stable
+        flutter-version: ${{ steps.flutter_version.outputs.version }}
+        cache: true
+
+    - name: Install dependencies
+      shell: bash
+      working-directory: ${{ inputs.app-dir }}
+      run: flutter pub get

.github/workflows/pr_build_all_platforms.yml

@@ -0,0 +1,213 @@
+name: Build PR Artifacts
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+
+permissions:
+  contents: read
+  pull-requests: write
+
+concurrency:
+  group: pr-build-artifacts-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+env:
+  APP_DIR: open_wearable
+
+jobs:
+  build_android:
+    name: Build Android
+    runs-on: ubuntu-latest
+    outputs:
+      artifact_id: ${{ steps.upload_android.outputs.artifact-id }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Java
+        uses: actions/setup-java@v5
+        with:
+          distribution: zulu
+          java-version: "17"
+          cache: gradle
+
+      - name: Set up Flutter project
+        uses: ./.github/actions/flutter-prepare
+        with:
+          app-dir: ${{ env.APP_DIR }}
+
+      - name: Build Android APK
+        working-directory: ${{ env.APP_DIR }}
+        run: flutter build apk --release
+
+      - name: Upload Android APK
+        id: upload_android
+        uses: actions/upload-artifact@v6
+        with:
+          name: android-apk
+          path: open_wearable/build/app/outputs/flutter-apk/app-release.apk
+          if-no-files-found: error
+
+  build_linux:
+    name: Build Linux
+    runs-on: ubuntu-latest
+    outputs:
+      artifact_id: ${{ steps.upload_linux.outputs.artifact-id }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Install Linux build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            clang \
+            cmake \
+            libgtk-3-dev \
+            ninja-build \
+            pkg-config
+
+      - name: Set up Flutter project
+        uses: ./.github/actions/flutter-prepare
+        with:
+          app-dir: ${{ env.APP_DIR }}
+
+      - name: Build Linux bundle
+        working-directory: ${{ env.APP_DIR }}
+        run: flutter build linux --release
+
+      - name: Upload Linux bundle
+        id: upload_linux
+        uses: actions/upload-artifact@v6
+        with:
+          name: linux-bundle
+          path: open_wearable/build/linux/x64/release/bundle
+          if-no-files-found: error
+
+  build_windows:
+    name: Build Windows
+    runs-on: windows-latest
+    outputs:
+      artifact_id: ${{ steps.upload_windows.outputs.artifact-id }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Flutter project
+        uses: ./.github/actions/flutter-prepare
+        with:
+          app-dir: ${{ env.APP_DIR }}
+
+      - name: Build Windows runner
+        working-directory: ${{ env.APP_DIR }}
+        run: flutter build windows --release
+
+      - name: Upload Windows runner
+        id: upload_windows
+        uses: actions/upload-artifact@v6
+        with:
+          name: windows-runner
+          path: open_wearable/build/windows/x64/runner/Release
+          if-no-files-found: error
+
+  build_web:
+    name: Build Web
+    runs-on: ubuntu-latest
+    outputs:
+      artifact_id: ${{ steps.upload_web.outputs.artifact-id }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Flutter project
+        uses: ./.github/actions/flutter-prepare
+        with:
+          app-dir: ${{ env.APP_DIR }}
+
+      - name: Build Web bundle
+        working-directory: ${{ env.APP_DIR }}
+        run: flutter build web --release
+
+      - name: Upload Web bundle
+        id: upload_web
+        uses: actions/upload-artifact@v6
+        with:
+          name: web-bundle
+          path: open_wearable/build/web
+          if-no-files-found: error
+
+  comment_artifact_links:
+    name: Comment Artifact Links
+    runs-on: ubuntu-latest
+    needs:
+      - build_android
+      - build_linux
+      - build_windows
+      - build_web
+    if: always()
+
+    steps:
+      - name: Post or update PR comment with artifact links
+        uses: actions/github-script@v8
+        env:
+          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+          ANDROID_ARTIFACT_ID: ${{ needs.build_android.outputs.artifact_id }}
+          LINUX_ARTIFACT_ID: ${{ needs.build_linux.outputs.artifact_id }}
+          WINDOWS_ARTIFACT_ID: ${{ needs.build_windows.outputs.artifact_id }}
+          WEB_ARTIFACT_ID: ${{ needs.build_web.outputs.artifact_id }}
+        with:
+          script: |
+            const marker = '<!-- pr-build-artifacts -->';
+            const prNumber = context.payload.pull_request.number;
+            const runUrl = process.env.RUN_URL;
+            const repoUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}`;
+            const linkFor = (id) => id
+              ? `${repoUrl}/actions/runs/${context.runId}/artifacts/${id}`
+              : runUrl;
+
+            const body = `${marker}
+            ### PR Build Artifacts
+            - Android APK: [Download Android build](${linkFor(process.env.ANDROID_ARTIFACT_ID)})
+            - Linux Bundle: [Download Linux build](${linkFor(process.env.LINUX_ARTIFACT_ID)})
+            - Windows Runner: [Download Windows build](${linkFor(process.env.WINDOWS_ARTIFACT_ID)})
+            - Web Bundle: [Download Web build](${linkFor(process.env.WEB_ARTIFACT_ID)})
+
+            Full workflow run: ${runUrl}`;
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: prNumber,
+            });
+
+            const previous = comments.find(
+              (comment) =>
+                comment.user.type === 'Bot' &&
+                comment.body &&
+                comment.body.includes(marker)
+            );
+
+            if (previous) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: previous.id,
+                body,
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: prNumber,
+                body,
+              });
+            }

open_wearable/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -9,6 +9,7 @@ import file_picker
 import file_selector_macos
 import flutter_archive
 import open_file_mac
+import path_provider_foundation
 import share_plus
 import shared_preferences_foundation
 import universal_ble
@@ -19,6 +20,7 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
   FlutterArchivePlugin.register(with: registry.registrar(forPlugin: "FlutterArchivePlugin"))
   OpenFilePlugin.register(with: registry.registrar(forPlugin: "OpenFilePlugin"))
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   UniversalBlePlugin.register(with: registry.registrar(forPlugin: "UniversalBlePlugin"))