Create Android "Hello World" app on linux using command line sdk

I am trying to write a minimal script to set up android SDK environment and build a minimal app.

This is what I've got, but it's failing with a gradle problem which I am unable to solve

FAILURE: Build failed with an exception.

* Where:
Build file '/home/user/my-app/build.gradle' line: 2

* What went wrong:
Plugin [id: 'com.android.application', version: '8.1.1', apply: false] was not found in any of the following sources:

- Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
- Plugin Repositories (could not resolve plugin artifact 'com.android.application:com.android.application.gradle.plugin:8.1.1')
  Searched in the following repositories:
    Gradle Central Plugin Repository

The code is as follows

#!/bin/bash
#
#  ./create-minimal.sh app-name
#

set -e

APP_NAME="$1"
APP_DIR="$PWD/$APP_NAME"
ANDROID_SDK_ROOT="$APP_NAME/android-sdk"
ANDROID_CMD_TOOLS="$PWD/$ANDROID_SDK_ROOT/cmdline-tools/latest"
GRADLE_VERSION="8.5"
ANDROID_BUILD_TOOLS="34.0.0"
ANDROID_PLATFORM="android-34"

echo "==> Installing dependencies..."
mkdir -p "$ANDROID_SDK_ROOT"
cd "$ANDROID_SDK_ROOT"

# Download Android Command Line Tools
if [ ! -d "cmdline-tools" ]; then
    wget https://dl.google.com/android/repository/commandlinetools-linux-10406996_latest.zip -O cmdline-tools.zip
    mkdir -p cmdline-tools/latest
    mkdir -p cmdline-tools/rmme
    unzip cmdline-tools.zip -d cmdline-tools/rmme
    mv cmdline-tools/rmme/*/* cmdline-tools/latest
    rm -rf cmdline-tools.zip cmdline-tools/rmme
fi

export PATH="$ANDROID_CMD_TOOLS/bin:$ANDROID_SDK_ROOT/platform-tools:$PATH"
export ANDROID_HOME="$ANDROID_SDK_ROOT"

echo "==> Installing Android SDK components..."
yes | sdkmanager --sdk_root=$ANDROID_SDK_ROOT --licenses
sdkmanager --sdk_root=$ANDROID_SDK_ROOT "platform-tools" "platforms;$ANDROID_PLATFORM" "build-tools;$ANDROID_BUILD_TOOLS"

if [ ! -d "gradle" ]; then
    echo "==> Installing Gradle..."
    wget https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip -O gradle.zip
    unzip gradle.zip
    mv gradle-${GRADLE_VERSION} gradle
    rm gradle.zip
fi
export PATH="$PWD/gradle/bin:$PATH"

echo "==> Creating Android project..."
cd "$APP_DIR"

gradle init --type basic

# ✅ Fix: Proper Android project structure
mkdir -p app/src/main/java/com/example/$APP_NAME
mkdir -p app/src/main/res/layout

# ✅ Fix: Add a proper root `build.gradle`
cat > build.gradle <<EOF
plugins {
    id 'com.android.application' version '8.1.1' apply false
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}
subprojects {
    afterEvaluate { project ->
        if (project.hasProperty("android")) {
            project.android.compileSdkVersion = 34
        }
    }
}
EOF

# ✅ Fix: Add `settings.gradle`
cat > settings.gradle <<EOF
rootProject.name = '$APP_NAME'
include ':app'
EOF

# ✅ Fix: Create `app/build.gradle`
mkdir -p app
cat > app/build.gradle <<EOF
plugins {
    id 'com.android.application'
}

android {
    namespace 'com.example.$APP_NAME'
    compileSdk 34

    defaultConfig {
        applicationId "com.example.$APP_NAME"
        minSdk 24
        targetSdk 34
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.9.0'
}
EOF

# ✅ Fix: Create `AndroidManifest.xml`
cat > app/src/main/AndroidManifest.xml <<EOF
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.$APP_NAME">
    <application
        android:allowBackup="true"
        android:label="Minimal App"
        android:theme="@style/Theme.MaterialComponents.DayNight">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>
EOF

# ✅ Fix: Create `MainActivity.java`
cat > app/src/main/java/com/example/$APP_NAME/MainActivity.java <<EOF
package com.example.$APP_NAME;

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(android.R.layout.simple_list_item_1);
    }
}
EOF

echo "==> Running Gradle sync..."
gradle wrapper

echo "==> Building the project..."
./gradlew build

echo "✅ Android project setup complete!"