Repo cloned

build-logic/plugins/build.gradle.kts

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+plugins {
+  `kotlin-dsl`
+}
+
+val signalJavaVersion: JavaVersion by rootProject.extra
+val signalKotlinJvmTarget: String by rootProject.extra
+
+java {
+  sourceCompatibility = signalJavaVersion
+  targetCompatibility = signalJavaVersion
+}
+
+kotlin {
+  jvmToolchain {
+    languageVersion.set(JavaLanguageVersion.of(signalKotlinJvmTarget))
+  }
+  compilerOptions {
+    suppressWarnings = true
+  }
+}
+
+dependencies {
+  implementation(libs.kotlin.gradle.plugin)
+  implementation(libs.android.library)
+  implementation(libs.android.application)
+
+  // These allow us to reference the dependency catalog inside of our compiled plugins
+  implementation(files(libs.javaClass.superclass.protectionDomain.codeSource.location))
+  implementation(files(testLibs.javaClass.superclass.protectionDomain.codeSource.location))
+}

build-logic/plugins/src/main/java/molly.gradle.kts

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+import com.android.build.gradle.AppExtension
+import org.jetbrains.kotlin.com.google.gson.Gson
+import org.w3c.dom.Document
+import org.w3c.dom.Element
+import javax.xml.parsers.DocumentBuilderFactory
+import javax.xml.transform.TransformerFactory
+import javax.xml.transform.dom.DOMSource
+import javax.xml.transform.stream.StreamResult
+
+/**
+ * Utility object for parsing and manipulating xml resource files.
+ */
+object XmlRes {
+  fun parseStrings(stringsFile: File): Pair<Document, List<Element>> {
+    val doc = parseXmlFile(stringsFile)
+    val strings = doc.getElements("string") + doc.getElements("plurals")
+    return doc to strings
+  }
+
+  fun parseColors(stringsFile: File): Pair<Document, Map<String, String>> {
+    val doc = parseXmlFile(stringsFile)
+    val colors = doc.getElements("color").associateBy(
+      { it.getAttribute("name") }, { it.firstChild.nodeValue }
+    )
+    return doc to colors
+  }
+
+  fun writeToFile(doc: Document, file: File) {
+    val transformer = TransformerFactory.newInstance().newTransformer()
+    transformer.transform(DOMSource(doc), StreamResult(file))
+  }
+
+  private fun parseXmlFile(file: File): Document {
+    val docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder()
+    return docBuilder.parse(file).apply {
+      xmlStandalone = true
+    }
+  }
+
+  private fun Document.getElements(tagName: String) =
+    getElementsByTagName(tagName).let { nodes ->
+      (0 until nodes.length).map { nodes.item(it) as Element }
+    }
+}
+
+val updateTranslationsForMolly by tasks.registering {
+  group = "Molly"
+  description = "Updates references to \"Signal\" with \"Molly\" in all translation files."
+
+  doLast {
+    val englishFile = file("src/main/res/values/strings.xml")
+    val (_, englishStrings) = XmlRes.parseStrings(englishFile)
+
+    // Gather all string names containing "mollyify" attribute
+    val mollyifyList = englishStrings
+      .filter { it.getAttribute("mollyify") == "true" }
+      .map { it.getAttribute("name") }
+      .toSet()
+
+    // Iterate through each translation file and perform the replacements
+    project.fileTree("src/main/res") {
+      include("**/values-*/strings.xml")
+    }.forEach { translationFile ->
+      try {
+        val (translationDoc, translatedStrings) = XmlRes.parseStrings(translationFile)
+        var modified = false
+
+        translatedStrings.forEach { elem ->
+          val name = elem.getAttribute("name")
+          if (name in mollyifyList) {
+            when (elem.tagName) {
+              "string" -> {
+                modified = elem.replaceSignalRefs() or modified
+              }
+
+              "plurals" -> {
+                val items = elem.getElementsByTagName("item")
+                for (i in 0 until items.length) {
+                  val item = items.item(i) as Element
+                  modified = item.replaceSignalRefs() or modified
+                }
+              }
+            }
+          }
+        }
+
+        if (modified) {
+          // Write back the modified translation file only if replacements were made
+          XmlRes.writeToFile(translationDoc, translationFile)
+          logger.lifecycle("Updated translations in: ${translationFile.toRelativeString(project.rootDir)}")
+        }
+      } catch (e: Exception) {
+        logger.error("Error processing file: ${translationFile.path}, ${e.message}")
+      }
+    }
+  }
+}
+
+private fun Element.replaceSignalRefs(): Boolean {
+  val oldContent = textContent
+  textContent = textContent
+    .replace("Signal", "Molly")
+    .replace("signal.org", "molly.im")
+  return oldContent != textContent
+}
+
+val updateColorsForMolly by tasks.registering {
+  group = "custom"
+  description = "Replaces Signal colors with Molly colors in the app source set."
+
+  doLast {
+    val appModule = project.rootProject.project(":app")
+    val mappingFile = appModule.file("src/main/res/values/molly_colors.xml")
+    val (_, colors) = XmlRes.parseColors(mappingFile)
+
+    val colorMappings = colors
+      .filterKeys { it.startsWith("stock_") }
+      .map { (signalColorName, signalColor) ->
+        val mollyColor = colors[signalColorName.replaceFirst("stock_", "molly_")]
+          ?: throw GradleException("No 'molly_*' color found for '$signalColorName' in '$mappingFile'")
+        signalColor.uppercase() to mollyColor.uppercase()
+      }
+      .toSet()
+
+    val signalToMolly = colorMappings.groupBy({ it.first }, { it.second })
+    val mollyToSignal = colorMappings.groupBy({ it.second }, { it.first })
+
+    val signalConflicts = signalToMolly.filterValues { it.size > 1 }
+    val mollyConflicts = mollyToSignal.filterValues { it.size > 1 }
+
+    val cycles = mollyToSignal.keys.intersect(signalToMolly.keys).filterNot { color ->
+      color in signalToMolly[color].orEmpty() && color in mollyToSignal[color].orEmpty()
+    }
+
+    if (signalConflicts.isNotEmpty() || mollyConflicts.isNotEmpty() || cycles.isNotEmpty()) {
+      logger.error("Conflict detected! Some colors map to multiple values:")
+      signalConflicts.forEach { (color, set) -> logger.error("Signal $color → Molly: $set") }
+      mollyConflicts.forEach { (color, set) -> logger.error("Molly $color ← Signal: $set") }
+      cycles.forEach { logger.error("Signal ↔ Molly: $it") }
+
+      throw GradleException("Conflicting color mappings found in '$mappingFile'")
+    }
+
+    val regexReplacements = colorMappings.map { (signalColor, mollyColor) ->
+      val signalHex = signalColor.drop(1)
+      val mollyHex = mollyColor.drop(1)
+      val pattern = """(0x|#)([0-9A-Fa-f]{2})?($signalHex)\b""".toRegex(RegexOption.IGNORE_CASE)
+      pattern to mollyHex
+    }
+
+    val sourceFiles = fileTree(project.file("src/main")) {
+      include("**/*.xml", "**/*.kt", "**/*.java")
+      exclude("**/${mappingFile.name}", "res/values*/strings*.xml")
+    }
+
+    var anyChanges = false
+
+    sourceFiles.files.parallelStream().forEach { file ->
+      val originalContent = file.readText()
+      var modifiedContent = originalContent
+      var changesInFile = 0
+
+      regexReplacements.forEach { (regex, newColor) ->
+        modifiedContent = regex.replace(modifiedContent) { match ->
+          val (_, prefix, alpha, color) = match.groupValues
+          if (!color.equals(newColor, ignoreCase = true)) {
+            changesInFile++
+            "$prefix$alpha$newColor"
+          } else match.value
+        }
+      }
+
+      if (changesInFile > 0) {
+        file.writeText(modifiedContent)
+        logger.lifecycle("Updated: ${file.toRelativeString(project.rootDir)}: $changesInFile change(s)")
+        anyChanges = true
+      }
+    }
+
+    logger.lifecycle(
+      if (anyChanges) "Finished updating Signal colors to Molly."
+      else "No changes needed. Colors are already updated."
+    )
+  }
+}
+
+val version by tasks.registering {
+  doLast {
+    val android = project.extensions.getByType(AppExtension::class)
+    val versionCode = android.defaultConfig.versionCode
+    val versionName = android.defaultConfig.versionName
+
+    val versionInfo = mapOf(
+      "versionCode" to versionCode,
+      "versionName" to versionName
+    )
+
+    println(Gson().toJson(versionInfo))
+  }
+}

build-logic/plugins/src/main/java/signal-library.gradle.kts

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+@file:Suppress("UnstableApiUsage")
+
+import org.gradle.accessors.dm.LibrariesForLibs
+import org.gradle.accessors.dm.LibrariesForTestLibs
+import org.gradle.api.JavaVersion
+import org.gradle.kotlin.dsl.extra
+
+val libs = the<LibrariesForLibs>()
+val testLibs = the<LibrariesForTestLibs>()
+
+val signalBuildToolsVersion: String by rootProject.extra
+val signalCompileSdkVersion: String by rootProject.extra
+val signalTargetSdkVersion: Int by rootProject.extra
+val signalMinSdkVersion: Int by rootProject.extra
+val signalJavaVersion: JavaVersion by rootProject.extra
+val signalKotlinJvmTarget: String by rootProject.extra
+
+plugins {
+  // We cannot use the version catalog in the plugins block in convention plugins (it's not supported).
+  // Instead, plugin versions are controlled through the dependencies block in the build.gradle.kts.
+  id("com.android.library")
+  id("kotlin-android")
+}
+
+android {
+  buildToolsVersion = signalBuildToolsVersion
+  compileSdkVersion = signalCompileSdkVersion
+
+  defaultConfig {
+    minSdk = signalMinSdkVersion
+    vectorDrawables.useSupportLibrary = true
+  }
+
+  compileOptions {
+    isCoreLibraryDesugaringEnabled = true
+    sourceCompatibility = signalJavaVersion
+    targetCompatibility = signalJavaVersion
+  }
+
+  kotlinOptions {
+    jvmTarget = signalKotlinJvmTarget
+    suppressWarnings = true
+  }
+
+  lint {
+    disable += "InvalidVectorPath"
+  }
+}
+
+dependencies {
+  lintChecks(project(":lintchecks"))
+
+  coreLibraryDesugaring(libs.android.tools.desugar)
+
+  implementation(libs.androidx.core.ktx)
+  implementation(libs.androidx.fragment.ktx)
+  implementation(libs.androidx.annotation)
+  implementation(libs.androidx.appcompat)
+  implementation(libs.rxjava3.rxandroid)
+  implementation(libs.rxjava3.rxjava)
+  implementation(libs.rxjava3.rxkotlin)
+  implementation(libs.kotlin.stdlib.jdk8)
+
+  testImplementation(testLibs.junit.junit)
+  testImplementation(testLibs.robolectric.robolectric)
+  testImplementation(testLibs.androidx.test.core)
+  testImplementation(testLibs.androidx.test.core.ktx)
+}

build-logic/plugins/src/main/java/signal-sample-app.gradle.kts

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+@file:Suppress("UnstableApiUsage")
+
+import org.gradle.accessors.dm.LibrariesForLibs
+import org.gradle.accessors.dm.LibrariesForTestLibs
+import org.gradle.api.JavaVersion
+import org.gradle.kotlin.dsl.extra
+import org.gradle.kotlin.dsl.provideDelegate
+import org.gradle.kotlin.dsl.the
+
+val libs = the<LibrariesForLibs>()
+val testLibs = the<LibrariesForTestLibs>()
+
+val signalBuildToolsVersion: String by rootProject.extra
+val signalCompileSdkVersion: String by rootProject.extra
+val signalTargetSdkVersion: Int by rootProject.extra
+val signalMinSdkVersion: Int by rootProject.extra
+val signalJavaVersion: JavaVersion by rootProject.extra
+val signalKotlinJvmTarget: String by rootProject.extra
+
+plugins {
+  // We cannot use the version catalog in the plugins block in convention plugins (it's not supported).
+  // Instead, plugin versions are controlled through the dependencies block in the build.gradle.kts.
+  id("com.android.application")
+  id("kotlin-android")
+}
+
+android {
+  buildToolsVersion = signalBuildToolsVersion
+  compileSdkVersion = signalCompileSdkVersion
+
+  defaultConfig {
+    versionCode = 1
+    versionName = "1.0"
+
+    minSdk = signalMinSdkVersion
+    targetSdk = signalTargetSdkVersion
+  }
+
+  compileOptions {
+    isCoreLibraryDesugaringEnabled = true
+    sourceCompatibility = signalJavaVersion
+    targetCompatibility = signalJavaVersion
+  }
+
+  kotlinOptions {
+    jvmTarget = signalKotlinJvmTarget
+    suppressWarnings = true
+  }
+
+  buildFeatures {
+    buildConfig = true
+    compose = true
+  }
+
+  composeOptions {
+    kotlinCompilerExtensionVersion = "1.5.4"
+  }
+}
+
+dependencies {
+  coreLibraryDesugaring(libs.android.tools.desugar)
+
+  implementation(project(":core-util"))
+
+  coreLibraryDesugaring(libs.android.tools.desugar)
+
+  implementation(libs.androidx.core.ktx)
+  implementation(libs.androidx.fragment.ktx)
+  implementation(libs.androidx.annotation)
+  implementation(libs.androidx.appcompat)
+  implementation(libs.rxjava3.rxandroid)
+  implementation(libs.rxjava3.rxjava)
+  implementation(libs.rxjava3.rxkotlin)
+  implementation(libs.material.material)
+  implementation(libs.androidx.constraintlayout)
+  implementation(libs.kotlin.stdlib.jdk8)
+  implementation(libs.androidx.activity.compose)
+  implementation(platform(libs.androidx.compose.bom))
+  implementation(libs.androidx.compose.material3)
+
+  testImplementation(testLibs.junit.junit)
+  testImplementation(testLibs.robolectric.robolectric)
+  testImplementation(testLibs.androidx.test.core)
+  testImplementation(testLibs.androidx.test.core.ktx)
+}