My Android APK Starter Studio

import base64
import html
import io
import re
import zipfile


def _build_zip(name: str, package: str, idea: str, features: str, style: str) -> str:
    if not re.fullmatch(r'[a-z][a-z0-9_]*(\.[a-z][a-z0-9_]*)+', package):
        raise ValueError('Invalid Android package ID.')
    if not name.strip() or not idea.strip():
        raise ValueError('App name and idea are required.')
    name = name.strip()[:60]
    idea = idea.strip()[:2200]
    lines = [line.strip()[:120] for line in features.splitlines() if line.strip()][:8]
    if not lines:
        lines = ['Customize your first screen', 'Build the features in your app plan']
    palette = {
        'indigo': ('#4355C9', '#F4F6FF'),
        'forest': ('#206B53', '#F0FAF5'),
        'sunset': ('#BD593F', '#FFF5EF'),
    }
    accent, background = palette.get(style, palette['indigo'])
    esc = lambda text: html.escape(text, quote=True).replace("'", ''')
    strings = ('<?xml version="1.0" encoding="utf-8"?>\n<resources>\n'
               '    <string name="app_name">' + esc(name) + '</string>\n'
               '    <string name="description">' + esc(idea[:450]) + '</string>\n'
               '    <string name="features">' + esc(' • '.join(lines)) + '</string>\n'
               '</resources>\n')
    activity = '''package __PACKAGE__

import android.app.Activity
import android.graphics.Color
import android.os.Bundle
import android.view.Gravity
import android.widget.Button
import android.widget.LinearLayout
import android.widget.ScrollView
import android.widget.TextView
import android.widget.Toast

class MainActivity : Activity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val pad = (24 * resources.displayMetrics.density).toInt()
        val panel = LinearLayout(this).apply {
            orientation = LinearLayout.VERTICAL
            setPadding(pad, pad, pad, pad)
            setBackgroundColor(Color.parseColor("__BACKGROUND__"))
        }
        fun text(value: String, size: Float, color: String): TextView = TextView(this).apply {
            this.text = value
            textSize = size
            setTextColor(Color.parseColor(color))
            setPadding(0, 0, 0, pad)
        }
        panel.addView(text(getString(R.string.app_name), 32f, "__ACCENT__"))
        panel.addView(text(getString(R.string.description), 18f, "#213047"))
        panel.addView(text("STARTER FEATURES", 13f, "__ACCENT__"))
        panel.addView(text(getString(R.string.features), 18f, "#213047"))
        val action = Button(this).apply {
            this.text = "Get started"
            setOnClickListener {
                Toast.makeText(this@MainActivity, "Connect your first feature here", Toast.LENGTH_LONG).show()
            }
        }
        panel.addView(action)
        panel.gravity = Gravity.CENTER_VERTICAL
        setContentView(ScrollView(this).apply { addView(panel) })
    }
}
'''.replace('__PACKAGE__', package).replace('__BACKGROUND__', background).replace('__ACCENT__', accent)
    app_gradle = '''plugins {
    id("com.android.application")
    id("org.jetbrains.kotlin.android")
}

android {
    namespace = "__PACKAGE__"
    compileSdk = 35
    defaultConfig {
        applicationId = "__PACKAGE__"
        minSdk = 24
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }
    kotlinOptions { jvmTarget = "17" }
}
'''.replace('__PACKAGE__', package)
    manifest = '''<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application android:label="@string/app_name" android:theme="@android:style/Theme.Material.Light.NoActionBar" android:allowBackup="true">
        <activity android:name=".MainActivity" android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>
'''
    readme = ('# ' + name.replace('\n', ' ') + '\n\n'
              'This is a compilable Kotlin Android starter UI, not a finished implementation of the requested features. The Get started button is a placeholder.\n\n'
              '## Build a debug APK\n'
              'Install Android SDK Platform 35, JDK 17, and Gradle 8.9. From this project folder, run:\n\n'
              '    gradle wrapper --gradle-version 8.9\n'
              '    ./gradlew assembleDebug\n\n'
              'On Windows, use gradlew.bat assembleDebug. Alternatively, open the folder in Android Studio, configure Gradle 8.9, sync, and choose Build > Build APK(s).\n'
              'Output: app/build/outputs/apk/debug/app-debug.apk\n\n'
              'The generated ZIP intentionally does not include a Gradle wrapper JAR; the first command creates the wrapper.\n'
              'The project needs an Android SDK and access to Gradle plugin dependencies for its first build.\n\n'
              '## Next steps\nImplement the requested screens, persistence, permissions, and any integrations before releasing. For distribution, configure signing and create a release build.\n')
    files = {
        'settings.gradle.kts': 'pluginManagement { repositories { google(); mavenCentral(); gradlePluginPortal() } }\ndependencyResolutionManagement { repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS); repositories { google(); mavenCentral() } }\nrootProject.name = "AndroidStarter"\ninclude(":app")\n',
        'build.gradle.kts': 'plugins {\n    id("com.android.application") version "8.6.1" apply false\n    id("org.jetbrains.kotlin.android") version "2.0.21" apply false\n}\n',
        'gradle.properties': 'org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8\nandroid.useAndroidX=true\n',
        'app/build.gradle.kts': app_gradle,
        'app/src/main/AndroidManifest.xml': manifest,
        'app/src/main/java/' + package.replace('.', '/') + '/MainActivity.kt': activity,
        'app/src/main/res/values/strings.xml': strings,
        'README.md': readme,
    }
    memory = io.BytesIO()
    with zipfile.ZipFile(memory, 'w', compression=zipfile.ZIP_DEFLATED) as archive:
        for path, content in files.items():
            archive.writestr(path, content)
    return base64.b64encode(memory.getvalue()).decode('ascii')


async def process_user_query(query: str) -> str:
    """Draft an Android implementation plan for the supplied app brief.

    Args:
        query: App name, package, idea, features, and palette.

    Returns:
        An actionable Android implementation plan.
    """
    prompt = ('Plan this Android app for a beginner. The ZIP download is a basic Kotlin Activity UI scaffold with app title, description, feature labels, and a placeholder button. It does NOT implement the described features. Do not say an APK has been compiled. Reply in plain text, concise, with headings: MVP, Screens, Data and permissions, Build next. Avoid unsupported promises.\n\nApp brief:\n' + query[:3500])
    return str(await agentop_llm.generate(prompt, globals().get('TEMPLATE_SYSTEM_PROMPT', '')))