VideoConcat/wails/build/android/Taskfile.yml

version: '3'

includes:
  common: ../Taskfile.yml

vars:
  APP_ID: '{{.APP_ID | default "com.wails.app"}}'
  MIN_SDK: '21'
  TARGET_SDK: '34'
  NDK_VERSION: 'r26d'

tasks:
  install:deps:
    summary: Check and install Android development dependencies
    cmds:
      - go run build/android/scripts/deps/install_deps.go
    env:
      TASK_FORCE_YES: '{{if .YES}}true{{else}}false{{end}}'
    prompt: This will check and install Android development dependencies. Continue?

  build:
    summary: Creates a build of the application for Android
    deps:
      - task: common:go:mod:tidy
      - task: generate:android:bindings
        vars:
          BUILD_FLAGS:
            ref: .BUILD_FLAGS
      - task: common:build:frontend
        vars:
          BUILD_FLAGS:
            ref: .BUILD_FLAGS
          PRODUCTION:
            ref: .PRODUCTION
      - task: common:generate:icons
    cmds:
      - echo "Building Android app {{.APP_NAME}}..."
      - task: compile:go:shared
        vars:
          ARCH: '{{.ARCH | default "arm64"}}'
    vars:
      BUILD_FLAGS: '{{if eq .PRODUCTION "true"}}-tags production,android -trimpath -buildvcs=false -ldflags="-w -s"{{else}}-tags android,debug -buildvcs=false -gcflags=all="-l"{{end}}'
    env:
      PRODUCTION: '{{.PRODUCTION | default "false"}}'

  compile:go:shared:
    summary: Compile Go code to shared library (.so)
    cmds:
      - |
        NDK_ROOT="${ANDROID_NDK_HOME:-$ANDROID_HOME/ndk/{{.NDK_VERSION}}}"
        if [ ! -d "$NDK_ROOT" ]; then
          echo "Error: Android NDK not found at $NDK_ROOT"
          echo "Please set ANDROID_NDK_HOME or install NDK {{.NDK_VERSION}} via Android Studio"
          exit 1
        fi

        # Determine toolchain based on host OS
        case "$(uname -s)" in
          Darwin) HOST_TAG="darwin-x86_64" ;;
          Linux)  HOST_TAG="linux-x86_64" ;;
          *)      echo "Unsupported host OS"; exit 1 ;;
        esac

        TOOLCHAIN="$NDK_ROOT/toolchains/llvm/prebuilt/$HOST_TAG"

        # Set compiler based on architecture
        case "{{.ARCH}}" in
          arm64)
            export CC="$TOOLCHAIN/bin/aarch64-linux-android{{.MIN_SDK}}-clang"
            export CXX="$TOOLCHAIN/bin/aarch64-linux-android{{.MIN_SDK}}-clang++"
            export GOARCH=arm64
            JNI_DIR="arm64-v8a"
            ;;
          amd64|x86_64)
            export CC="$TOOLCHAIN/bin/x86_64-linux-android{{.MIN_SDK}}-clang"
            export CXX="$TOOLCHAIN/bin/x86_64-linux-android{{.MIN_SDK}}-clang++"
            export GOARCH=amd64
            JNI_DIR="x86_64"
            ;;
          *)
            echo "Unsupported architecture: {{.ARCH}}"
            exit 1
            ;;
        esac

        export CGO_ENABLED=1
        export GOOS=android

        mkdir -p {{.BIN_DIR}}
        mkdir -p build/android/app/src/main/jniLibs/$JNI_DIR

        go build -buildmode=c-shared {{.BUILD_FLAGS}} \
          -o build/android/app/src/main/jniLibs/$JNI_DIR/libwails.so        
    vars:
      BUILD_FLAGS: '{{if eq .PRODUCTION "true"}}-tags production,android -trimpath -buildvcs=false -ldflags="-w -s"{{else}}-tags android,debug -buildvcs=false -gcflags=all="-l"{{end}}'

  compile:go:all-archs:
    summary: Compile Go code for all Android architectures (fat APK)
    cmds:
      - task: compile:go:shared
        vars:
          ARCH: arm64
      - task: compile:go:shared
        vars:
          ARCH: amd64

  package:
    summary: Packages a production build of the application into an APK
    deps:
      - task: build
        vars:
          PRODUCTION: "true"
    cmds:
      - task: assemble:apk

  package:fat:
    summary: Packages a production build for all architectures (fat APK)
    cmds:
      - task: compile:go:all-archs
      - task: assemble:apk

  assemble:apk:
    summary: Assembles the APK using Gradle
    cmds:
      - |
        cd build/android
        ./gradlew assembleDebug
        cp app/build/outputs/apk/debug/app-debug.apk "../../{{.BIN_DIR}}/{{.APP_NAME}}.apk"
        echo "APK created: {{.BIN_DIR}}/{{.APP_NAME}}.apk"        

  assemble:apk:release:
    summary: Assembles a release APK using Gradle
    cmds:
      - |
        cd build/android
        ./gradlew assembleRelease
        cp app/build/outputs/apk/release/app-release-unsigned.apk "../../{{.BIN_DIR}}/{{.APP_NAME}}-release.apk"
        echo "Release APK created: {{.BIN_DIR}}/{{.APP_NAME}}-release.apk"        

  generate:android:bindings:
    internal: true
    summary: Generates bindings for Android
    sources:
      - "**/*.go"
      - go.mod
      - go.sum
    generates:
      - frontend/bindings/**/*
    cmds:
      - wails3 generate bindings -f '{{.BUILD_FLAGS}}' -clean=true
    env:
      GOOS: android
      CGO_ENABLED: 1
      GOARCH: '{{.ARCH | default "arm64"}}'

  ensure-emulator:
    internal: true
    summary: Ensure Android Emulator is running
    silent: true
    cmds:
      - |
        # Check if an emulator is already running
        if adb devices | grep -q "emulator"; then
          echo "Emulator already running"
          exit 0
        fi

        # Get first available AVD
        AVD_NAME=$(emulator -list-avds | head -1)
        if [ -z "$AVD_NAME" ]; then
          echo "No Android Virtual Devices found."
          echo "Create one using: Android Studio > Tools > Device Manager"
          exit 1
        fi

        echo "Starting emulator: $AVD_NAME"
        emulator -avd "$AVD_NAME" -no-snapshot-load &

        # Wait for emulator to boot (max 60 seconds)
        echo "Waiting for emulator to boot..."
        adb wait-for-device

        for i in {1..60}; do
          BOOT_COMPLETED=$(adb shell getprop sys.boot_completed 2>/dev/null | tr -d '\r')
          if [ "$BOOT_COMPLETED" = "1" ]; then
            echo "Emulator booted successfully"
            exit 0
          fi
          sleep 1
        done

        echo "Emulator boot timeout"
        exit 1        
    preconditions:
      - sh: command -v adb
        msg: "adb not found. Please install Android SDK and add platform-tools to PATH"
      - sh: command -v emulator
        msg: "emulator not found. Please install Android SDK and add emulator to PATH"

  deploy-emulator:
    summary: Deploy to Android Emulator
    deps: [package]
    cmds:
      - adb uninstall {{.APP_ID}} 2>/dev/null || true
      - adb install "{{.BIN_DIR}}/{{.APP_NAME}}.apk"
      - adb shell am start -n {{.APP_ID}}/.MainActivity

  run:
    summary: Run the application in Android Emulator
    deps:
      - task: ensure-emulator
      - task: build
        vars:
          ARCH: x86_64
    cmds:
      - task: assemble:apk
      - adb uninstall {{.APP_ID}} 2>/dev/null || true
      - adb install "{{.BIN_DIR}}/{{.APP_NAME}}.apk"
      - adb shell am start -n {{.APP_ID}}/.MainActivity

  logs:
    summary: Stream Android logcat filtered to this app
    cmds:
      - adb logcat -v time | grep -E "(Wails|{{.APP_NAME}})"

  logs:all:
    summary: Stream all Android logcat (verbose)
    cmds:
      - adb logcat -v time

  clean:
    summary: Clean build artifacts
    cmds:
      - rm -rf {{.BIN_DIR}}
      - rm -rf build/android/app/build
      - rm -rf build/android/app/src/main/jniLibs/*/libwails.so
      - rm -rf build/android/.gradle