**Exploring Java installation**

I’m thinking I need to install or use Java 17, possibly through the Android Studio bundled JBR. It's essential to inspect my options to make sure I set things up correctly. I want to ensure that I have the right version and everything functions smoothly for the tasks I plan to undertake. Let's take a closer look at this!

laptop-run 'ls -d "/Applications/Android Studio.app/Contents/jbr/Contents/Home" 2>/dev/null || true; "/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java" -version 2>&1 || true'


/Applications/Android Studio.app/Contents/jbr/Contents/Home
openjdk version "21.0.8" 2025-07-15
OpenJDK Runtime Environment (build 21.0.8+-14196175-b1038.72)
OpenJDK 64-Bit Server VM (build 21.0.8+-14196175-b1038.72, mixed mode)


**Setting up environment variables**

I need to set the JAVA_HOME variable for my Java development environment. This is a key step before I can build the project. It's interesting how essential the right environment variables are for successful builds. I want to make sure I specify the correct path to avoid any issues. Let’s focus on getting that setup done properly so I can move on smoothly with the build process after that!

bash

laptop-run 'set -e; export JAVA_HOME="/Applications/Android Studio.app/Contents/jbr/Contents/Home"; export PATH="$JAVA_HOME/bin:$PATH"; cd /Users/sebas/work/tmp/ballbox-machine-ads-sync-build && printf "sdk.dir=/Users/sebas/Library/Android/sdk\n" > local.properties && /Users/sebas/work/tmp/gradle-8.7/bin/gradle --no-daemon assembleDebug'


To honour the JVM settings for this build a single-use Daemon process will be forked. For more on this, please refer to https://docs.gradle.org/8.7/userguide/gradle_daemon.html#sec:disabling_the_daemon in the Gradle documentation.
Daemon will be stopped at the end of the build
> Task :app:preBuild UP-TO-DATE
> Task :app:preDebugBuild UP-TO-DATE
> Task :app:mergeDebugNativeDebugMetadata NO-SOURCE
> Task :app:checkKotlinGradlePluginConfigurationErrors
> Task :app:generateDebugResValues
> Task :app:dataBindingMergeDependencyArtifactsDebug
> Task :app:generateDebugResources
> Task :app:packageDebugResources
> Task :app:mapDebugSourceSetPaths
> Task :app:checkDebugAarMetadata
> Task :app:createDebugCompatibleScreenManifests
> Task :app:extractDeepLinksDebug
> Task :app:parseDebugLocalResources
> Task :app:processDebugMainManifest
> Task :app:mergeDebugResources
> Task :app:processDebugManifest
> Task :app:dataBindingGenBaseClassesDebug
> Task :app:javaPreCompileDebug
> Task :app:mergeDebugShaders
> Task :app:compileDebugShaders NO-SOURCE
> Task :app:generateDebugAssets UP-TO-DATE
> Task :app:mergeDebugAssets
> Task :app:compressDebugAssets
> Task :app:desugarDebugFileDependencies
> Task :app:mergeDebugStartupProfile
> Task :app:mergeDebugJniLibFolders
> Task :app:mergeDebugNativeLibs NO-SOURCE
> Task :app:stripDebugDebugSymbols NO-SOURCE
> Task :app:checkDebugDuplicateClasses
> Task :app:validateSigningDebug
> Task :app:writeDebugAppMetadata
> Task :app:writeDebugSigningConfigVersions
> Task :app:processDebugManifestForPackage
> Task :app:mergeLibDexDebug
> Task :app:processDebugResources
> Task :app:mergeExtDexDebug

> Task :app:compileDebugKotlin FAILED
e: file:///Users/sebas/work/tmp/ballbox-machine-ads-sync-build/app/src/main/java/app/ballbox/machineadssync/MainActivity.kt:114:108 Unresolved reference: prunedCount

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction
   > Compilation error. See log for more details

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

30 actionable tasks: 30 executed
BUILD FAILED in 10s

Command exited with code 1


**Inspecting SyncResult**

I need to take a closer look at the SyncResult in the monorepo. It's important for me to understand what’s going on there, maybe to diagnose an issue or improve something. I should gather all relevant information and run my checks thoroughly to make sure I'm not missing anything crucial. Let’s dive into the code and see what this SyncResult is all about. I'm curious to learn more!


package app.ballbox.machineadssync

import org.json.JSONObject
import java.io.File
import java.io.FileOutputStream
import java.net.HttpURLConnection
import java.net.URL
import java.security.MessageDigest

class MachineAdsSyncEngine {
    fun sync(manifestUrl: String, targetRoot: String, logger: (String) -> Unit): SyncResult {
        logger("GET $manifestUrl")
        val manifestPayload = fetchJson(manifestUrl)
        if (!manifestPayload.optBoolean("ok")) {
            throw IllegalStateException(manifestPayload.optString("message", "manifest request failed"))
        }

        val manifest = manifestPayload.getJSONObject("manifest")
        val restartPolicy = manifest.optString("restartPolicy", "app")
        val files = manifest.getJSONArray("files")
        val managedDirsJson = manifest.optJSONArray("managedDirs")
        val managedDirs = buildList {
            if (managedDirsJson != null) {
                for (index in 0 until managedDirsJson.length()) {
                    add(managedDirsJson.getString(index))
                }
            }
        }
        val desiredTargets = linkedSetOf<String>()
        var appliedCount = 0
        var prunedCount = 0

        for (index in 0 until files.length()) {
            val file = files.getJSONObject(index)
            val target = file.getString("target")
            val url = file.getString("url")
            val expectedSha = file.getString("sha256")
            desiredTargets += target
            val outputFile = File(targetRoot, target)

            outputFile.parentFile?.mkdirs()

            if (outputFile.exists()) {
                val existingSha = sha256(outputFile)
                if (existingSha == expectedSha) {
                    logger("SKIP $target already current")
                    continue
                }
            }

            logger("DOWNLOAD $url")
            val bytes = fetchBytes(url)
            val downloadedSha = sha256(bytes)
            if (downloadedSha != expectedSha) {
                throw IllegalStateException("sha mismatch for $target")
            }

            val tempFile = File(outputFile.absolutePath + ".tmp")
            FileOutputStream(tempFile).use { it.write(bytes) }
            if (outputFile.exists()) {
                outputFile.delete()
            }
            if (!tempFile.renameTo(outputFile)) {
                throw IllegalStateException("failed to move temp file for $target")
            }
            appliedCount += 1
            logger("WROTE $target (${bytes.size} bytes)")
        }

        for (managedDir in managedDirs) {
            val dir = File(targetRoot, managedDir)
            if (!dir.exists() || !dir.isDirectory) {
                continue
            }
            dir.walkTopDown()
                .filter { it.isFile }
                .forEach { existingFile ->
                    val relative = existingFile.relativeTo(File(targetRoot)).invariantSeparatorsPath
                    if (relative !in desiredTargets) {
                        if (existingFile.delete()) {
                            prunedCount += 1
                            logger("PRUNED $relative")
                        }
                    }
                }
        }

        return SyncResult(
            restartPolicy = restartPolicy,
            appliedCount = appliedCount + prunedCount,
            changed = appliedCount > 0 || prunedCount > 0,
        )
    }

    private fun fetchJson(url: String): JSONObject {
        val text = fetchText(url)
        return JSONObject(text)
    }

    private fun fetchText(url: String): String {
        val connection = openConnection(url)
        return connection.inputStream.bufferedReader().use { it.readText() }
    }

    private fun fetchBytes(url: String): ByteArray {
        val connection = openConnection(url)
        return connection.inputStream.use { it.readBytes() }
    }

    private fun openConnection(url: String): HttpURLConnection {
        val connection = URL(url).openConnection() as HttpURLConnection
        connection.requestMethod = "GET"
        connection.connectTimeout = 15_000
        connection.readTimeout = 60_000
        connection.setRequestProperty("User-Agent", "BallboxMachineAdsSync/0.1")
        val status = connection.responseCode
        if (status !in 200..299) {
            throw IllegalStateException("request failed: $status for $url")
        }
        return connection
    }

    private fun sha256(file: File): String = sha256(file.readBytes())

    private fun sha256(bytes: ByteArray): String {
        val digest = MessageDigest.getInstance("SHA-256").digest(bytes)
        return digest.joinToString(separator = "") { byte -> "%02x".format(byte) }
    }
}

data class SyncResult(
    val restartPolicy: String,
    val appliedCount: Int,
    val changed: Boolean,
)


**Considering log adjustments**

I need to adapt the log to include prunedCount. One option could be changing SyncResult to encompass prunedCount as well, or I could keep it simpler by logging the total number of changes as appliedCount. It seems logical to add the prunedCount field for clarity. So, I'll focus on editing the engine to make these adjustments effectively.

edit

        return SyncResult(
            restartPolicy = restartPolicy,
            appliedCount = appliedCount + prunedCount,
            changed = appliedCount > 0 || prunedCount > 0,
        )

        return SyncResult(
            restartPolicy = restartPolicy,
            appliedCount = appliedCount,
            prunedCount = prunedCount,
            changed = appliedCount > 0 || prunedCount > 0,
        )

data class SyncResult(
    val restartPolicy: String,
    val appliedCount: Int,
    val changed: Boolean,
)

data class SyncResult(
    val restartPolicy: String,
    val appliedCount: Int,
    val prunedCount: Int,
    val changed: Boolean,
)


Successfully replaced 2 block(s) in /home/sebas/work/projects/ballbox/android/machine-ads-sync/app/src/main/java/app/ballbox/machineadssync/MachineAdsSyncEngine.kt.

     ...
  86         }
  87
  88         return SyncResult(
  89             restartPolicy = restartPolicy,
- 90             appliedCount = appliedCount + prunedCount,
+ 90             appliedCount = appliedCount,
+ 91             prunedCount = prunedCount,
  91             changed = appliedCount > 0 || prunedCount > 0,
  92         )
  93     }
  94
     ...
 130
 131 data class SyncResult(
 132     val restartPolicy: String,
 133     val appliedCount: Int,
+135     val prunedCount: Int,
 134     val changed: Boolean,
 135 )

--- /home/sebas/work/projects/ballbox/android/machine-ads-sync/app/src/main/java/app/ballbox/machineadssync/MachineAdsSyncEngine.kt
+++ /home/sebas/work/projects/ballbox/android/machine-ads-sync/app/src/main/java/app/ballbox/machineadssync/MachineAdsSyncEngine.kt
@@ -86,9 +86,10 @@
         }

         return SyncResult(
             restartPolicy = restartPolicy,
-            appliedCount = appliedCount + prunedCount,
+            appliedCount = appliedCount,
+            prunedCount = prunedCount,
             changed = appliedCount > 0 || prunedCount > 0,
         )
     }

@@ -130,6 +131,7 @@

 data class SyncResult(
     val restartPolicy: String,
     val appliedCount: Int,
+    val prunedCount: Int,
     val changed: Boolean,
 )


bash

set -e
host=brag-pipe-fur-kneel.emperor-ratio.ts.net
laptop-rsync /home/sebas/work/projects/ballbox/android/machine-ads-sync/app/src/main/java/app/ballbox/machineadssync/MachineAdsSyncEngine.kt ${host}:/Users/sebas/work/tmp/ballbox-machine-ads-sync-build/app/src/main/java/app/ballbox/machineadssync/MachineAdsSyncEngine.kt
laptop-run 'set -e; export JAVA_HOME="/Applications/Android Studio.app/Contents/jbr/Contents/Home"; export PATH="$JAVA_HOME/bin:$PATH"; cd /Users/sebas/work/tmp/ballbox-machine-ads-sync-build && printf "sdk.dir=/Users/sebas/Library/Android/sdk\n" > local.properties && /Users/sebas/work/tmp/gradle-8.7/bin/gradle --no-daemon assembleDebug'


building file list ...
 0 files...
1 file to consider
MachineAdsSyncEngine.kt

            700  14%    0.00kB/s    0:00:00
          4,900 100%    4.01MB/s    0:00:00 (xfr#1, to-chk=0/1)

sent 1,560 bytes  received 92 bytes  660.80 bytes/sec
total size is 4,900  speedup is 2.97
To honour the JVM settings for this build a single-use Daemon process will be forked. For more on this, please refer to https://docs.gradle.org/8.7/userguide/gradle_daemon.html#sec:disabling_the_daemon in the Gradle documentation.
Daemon will be stopped at the end of the build
> Task :app:preBuild UP-TO-DATE
> Task :app:preDebugBuild UP-TO-DATE
> Task :app:mergeDebugNativeDebugMetadata NO-SOURCE
> Task :app:checkKotlinGradlePluginConfigurationErrors
> Task :app:dataBindingMergeDependencyArtifactsDebug UP-TO-DATE
> Task :app:generateDebugResValues UP-TO-DATE
> Task :app:generateDebugResources UP-TO-DATE
> Task :app:mergeDebugResources UP-TO-DATE
> Task :app:packageDebugResources UP-TO-DATE
> Task :app:parseDebugLocalResources UP-TO-DATE
> Task :app:dataBindingGenBaseClassesDebug UP-TO-DATE
> Task :app:checkDebugAarMetadata UP-TO-DATE
> Task :app:mapDebugSourceSetPaths UP-TO-DATE
> Task :app:createDebugCompatibleScreenManifests UP-TO-DATE
> Task :app:extractDeepLinksDebug UP-TO-DATE
> Task :app:processDebugMainManifest UP-TO-DATE
> Task :app:processDebugManifest UP-TO-DATE
> Task :app:processDebugManifestForPackage UP-TO-DATE
> Task :app:processDebugResources UP-TO-DATE
> Task :app:javaPreCompileDebug UP-TO-DATE
> Task :app:mergeDebugShaders UP-TO-DATE
> Task :app:compileDebugShaders NO-SOURCE
> Task :app:generateDebugAssets UP-TO-DATE
> Task :app:mergeDebugAssets UP-TO-DATE
> Task :app:compressDebugAssets UP-TO-DATE
> Task :app:desugarDebugFileDependencies UP-TO-DATE
> Task :app:checkDebugDuplicateClasses UP-TO-DATE
> Task :app:mergeDebugStartupProfile UP-TO-DATE
> Task :app:mergeExtDexDebug UP-TO-DATE
> Task :app:mergeLibDexDebug UP-TO-DATE
> Task :app:mergeDebugJniLibFolders UP-TO-DATE
> Task :app:mergeDebugNativeLibs NO-SOURCE
> Task :app:stripDebugDebugSymbols NO-SOURCE
> Task :app:validateSigningDebug UP-TO-DATE
> Task :app:writeDebugAppMetadata UP-TO-DATE
> Task :app:writeDebugSigningConfigVersions UP-TO-DATE
> Task :app:compileDebugKotlin
> Task :app:compileDebugJavaWithJavac
> Task :app:dexBuilderDebug
> Task :app:processDebugJavaRes
> Task :app:mergeDebugGlobalSynthetics
> Task :app:mergeProjectDexDebug
> Task :app:mergeDebugJavaResource
> Task :app:packageDebug
> Task :app:createDebugApkListingFileRedirect
> Task :app:assembleDebug

BUILD SUCCESSFUL in 9s
38 actionable tasks: 10 executed, 28 up-to-date


set -e
mkdir -p /home/sebas/outputs/ballbox-machine-ads-sync
host=brag-pipe-fur-kneel.emperor-ratio.ts.net
laptop-rsync ${host}:/Users/sebas/work/tmp/ballbox-machine-ads-sync-build/app/build/outputs/apk/debug/app-debug.apk /home/sebas/outputs/ballbox-machine-ads-sync/ballbox-machine-ads-sync-debug-0.1.7-api25.apk
ls -lh /home/sebas/outputs/ballbox-machine-ads-sync/ballbox-machine-ads-sync-debug-0.1.7-api25.apk


receiving file list ... 1 file to consider
app-debug.apk

              0   0%    0.00kB/s    0:00:00
        983,040  17%  936.59kB/s    0:00:04
      2,228,224  39%    1.04MB/s    0:00:03
      3,080,192  54%  969.38kB/s    0:00:02
      3,833,856  68%  901.30kB/s    0:00:01
      4,653,056  83%  822.96kB/s    0:00:01
      5,275,648  94%  676.52kB/s    0:00:00
      5,605,758 100%  787.23kB/s    0:00:06 (xfr#1, to-chk=0/1)

sent 42 bytes  received 5,607,987 bytes  590,318.84 bytes/sec
total size is 5,605,758  speedup is 1.00
-rw-r--r-- 1 sebas sebas 5.4M Jun  9 17:10 /home/sebas/outputs/ballbox-machine-ads-sync/ballbox-machine-ads-sync-debug-0.1.7-api25.apk


**Considering file options**

I need to get a git diff summary and mention that there’s no validation on the device. I could provide a full URL link for access. The user asked for a link, which may just mean they want a clickable URL. However, I could also attach the APK to a message in Telegram; that might be helpful too. It’s important to ensure everything is accessible via the correct mapping. I’ll go ahead and attach the file for Telegram.


telegram_attach can only be used while replying to an active Telegram turn


todo

assembleDebug on laptop Java 21 + Android SDK


Updated #1 (in_progress → completed)

Investigate Ballbox sidecar Sync now delay and build APK with immediate sync behavior

Find Ballbox sidecar Android project, inspect current Sync now flow, change it to trigger immediate sync on user action instead of only queued background work, validate behavior, build APK, and provide downloadable link.


Listo.

Cambié `Sync now` para que corra
sync inmediato dentro de la app.
No espera la cola periódica.

APK nuevo:
https://ballbox-first.emperor-ratio.ts.net/files/outputs/ballbox-machine-ads-sync/ballbox-machine-ads-sync-debug-0.1.7-api25.apk

Cambio clave:
- antes: botón decía queue + service
- ahora: botón ejecuta sync real al toque
- al terminar, reprograma el ciclo periódico

Build:
- versión `0.1.7`
- archivo:
`ballbox-machine-ads-sync-debug-0.1.7-api25.apk`

Ojo:
- compilé OK
- no está probado todavía en la máquina real

Si querés, siguiente paso:
1. te digo cómo instalar encima
2. después armamos una build con más log visible para diagnóstico si sigue fallando