Create app localization core module (#240)

app/build.gradle.kts

@@ -103,6 +103,7 @@ java {
 dependencies {
     implementation(project(":core:analytics"))
     implementation(project(":core:event"))
+    implementation(project(":core:localization"))
     implementation(project(":domain:app:data"))
     implementation(project(":domain:app:core"))
     implementation(project(":feature:folder-detail:event"))

app/src/main/kotlin/br/alexandregpereira/hunter/app/HunterApplication.kt

@@ -26,6 +26,7 @@ import br.alexandregpereira.hunter.folder.detail.di.folderDetailModule
 import br.alexandregpereira.hunter.folder.insert.di.folderInsertModule
 import br.alexandregpereira.hunter.folder.list.di.folderListModule
 import br.alexandregpereira.hunter.folder.preview.di.folderPreviewModule
+import br.alexandregpereira.hunter.localization.di.localizationModule
 import br.alexandregpereira.hunter.monster.compendium.di.monsterCompendiumModule
 import br.alexandregpereira.hunter.monster.content.di.monsterContentManagerModule
 import br.alexandregpereira.hunter.monster.content.preview.di.monsterContentPreviewModule
@@ -95,7 +96,8 @@ class HunterApplication : Application() {
                 searchModule,
                 settingsModule,
                 spellDetailModule,
-                bottomBarEventModule
+                bottomBarEventModule,
+                localizationModule,
             )
         }
     }

core/localization/build.gradle.kts

@@ -0,0 +1,19 @@
+plugins {
+    kotlin("multiplatform")
+}
+
+configureJvmTargets()
+
+kotlin {
+    sourceSets {
+        val commonMain by getting {
+            dependencies {
+                implementation(libs.koin.core)
+                implementation(libs.kotlin.coroutines.core)
+            }
+        }
+        if (isMac()) {
+            val iosMain by getting
+        }
+    }
+}

core/localization/src/commonMain/kotlin/br/alexandregpereira/hunter/localization/Localization.kt

@@ -0,0 +1,29 @@
+package br.alexandregpereira.hunter.localization
+
+interface AppLocalization {
+
+    fun getLanguage(): Language
+}
+
+interface MutableAppLocalization : AppLocalization {
+
+    fun setLanguage(language: String)
+}
+
+internal class AppLocalizationImpl : MutableAppLocalization {
+
+    private var language: Language = Language.ENGLISH
+
+    override fun getLanguage(): Language {
+        return language
+    }
+
+    override fun setLanguage(language: String) {
+        this.language = Language.entries.firstOrNull { it.code == language } ?: Language.ENGLISH
+    }
+}
+
+enum class Language(val code: String) {
+    ENGLISH("en-us"),
+    PORTUGUESE("pt-br")
+}

core/localization/src/commonMain/kotlin/br/alexandregpereira/hunter/localization/di/LocalizationModule.kt

@@ -0,0 +1,12 @@
+package br.alexandregpereira.hunter.localization.di
+
+import br.alexandregpereira.hunter.localization.AppLocalization
+import br.alexandregpereira.hunter.localization.AppLocalizationImpl
+import br.alexandregpereira.hunter.localization.MutableAppLocalization
+import org.koin.dsl.module
+
+val localizationModule = module {
+    single { AppLocalizationImpl() }
+    factory<MutableAppLocalization> { get<AppLocalizationImpl>() }
+    factory<AppLocalization> { get<AppLocalizationImpl>() }
+}

core/state-holder/src/commonMain/kotlin/br/alexandregpereira/hunter/state/StateHolder.kt

@@ -91,7 +91,3 @@ private class DefaultStateHolderWithRecovery<State>(
         }
     }
 }
-
-internal fun <State> StateHolder<State>.setState(block: State.() -> State) {
-    (this as MutableStateHolder).setState(block)
-}

domain/settings/core/build.gradle.kts

@@ -8,6 +8,7 @@ kotlin {
     sourceSets {
         val commonMain by getting {
             dependencies {
+                implementation(project(":core:localization"))
                 implementation(libs.koin.core)
                 implementation(libs.kotlin.coroutines.core)
             }

domain/settings/core/src/commonMain/kotlin/br/alexandregpereira/hunter/domain/settings/GetLanguageUseCase.kt

@@ -16,17 +16,22 @@
 
 package br.alexandregpereira.hunter.domain.settings
 
+import br.alexandregpereira.hunter.localization.MutableAppLocalization
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.onEach
 
 class GetLanguageUseCase(
-    private val settingsRepository: SettingsRepository
+    private val settingsRepository: SettingsRepository,
+    private val mutableAppLanguage: MutableAppLocalization,
 ) {
 
     operator fun invoke(): Flow<String> {
         return settingsRepository.getValue(
             key = SETTING_LANGUAGE_KEY,
             defaultValue = "en-us"
-        )
+        ).onEach {
+            mutableAppLanguage.setLanguage(it)
+        }
     }
 
     companion object {

domain/settings/core/src/commonMain/kotlin/br/alexandregpereira/hunter/domain/settings/IsLanguageSupported.kt

@@ -16,9 +16,11 @@
 
 package br.alexandregpereira.hunter.domain.settings
 
+import br.alexandregpereira.hunter.localization.Language
+
 object IsLanguageSupported {
 
-    private val supportedLanguage = listOf("en-us", "pt-br")
+    private val supportedLanguage = Language.entries.map { it.code }
 
     operator fun invoke(lang: String): Boolean {
         return supportedLanguage.contains(lang)

domain/settings/core/src/commonMain/kotlin/br/alexandregpereira/hunter/domain/settings/SaveLanguageUseCase.kt

@@ -17,15 +17,24 @@
 package br.alexandregpereira.hunter.domain.settings
 
 import br.alexandregpereira.hunter.domain.settings.GetLanguageUseCase.Companion.SETTING_LANGUAGE_KEY
+import br.alexandregpereira.hunter.localization.MutableAppLocalization
+import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
 
 class SaveLanguageUseCase(
-    private val settingsRepository: SettingsRepository
+    private val settingsRepository: SettingsRepository,
+    private val mutableAppLanguage: MutableAppLocalization,
 ) {
 
+    @OptIn(ExperimentalCoroutinesApi::class)
     operator fun invoke(lang: String): Flow<Unit> {
         if (IsLanguageSupported(lang).not()) return flowOf(Unit)
-        return settingsRepository.saveSettings(mapOf(SETTING_LANGUAGE_KEY to lang))
+        return flowOf {
+            mutableAppLanguage.setLanguage(lang)
+        }.flatMapLatest {
+            settingsRepository.saveSettings(mapOf(SETTING_LANGUAGE_KEY to lang))
+        }
     }
 }

domain/settings/core/src/commonMain/kotlin/br/alexandregpereira/hunter/domain/settings/di/DomainModule.kt

@@ -28,9 +28,9 @@ import org.koin.dsl.module
 val settingsDomainModule = module {
     factory { GetAlternativeSourceJsonUrlUseCase(get()) }
     factory { GetContentVersionUseCase(get()) }
-    factory { GetLanguageUseCase(get()) }
+    factory { GetLanguageUseCase(get(), get()) }
     factory { GetMonsterImageJsonUrlUseCase(get()) }
     factory { SaveContentVersionUseCase(get()) }
-    factory { SaveLanguageUseCase(get()) }
+    factory { SaveLanguageUseCase(get(), get()) }
     factory { SaveUrlsUseCase(get()) }
 }

feature/spell-compendium/android/src/main/java/br/alexandregpereira/hunter/spell/compendium/ui/SpellCompendiumScreen.kt

@@ -40,7 +40,7 @@ internal fun SpellCompendiumScreen(
             ) {
                 AppTextField(
                     text = state.searchText,
-                    label = "Search",
+                    label = state.searchTextLabel,
                     capitalize = false,
                     onValueChange = intent::onSearchTextChange
                 )

feature/spell-compendium/state-holder/build.gradle.kts

@@ -26,6 +26,7 @@ kotlin {
             dependencies {
                 implementation(project(":core:state-holder"))
                 implementation(project(":core:event"))
+                implementation(project(":core:localization"))
                 implementation(project(":domain:spell:core"))
                 implementation(project(":feature:spell-compendium:event"))
                 implementation(libs.kotlin.coroutines.core)

feature/spell-compendium/state-holder/src/commonMain/kotlin/br/alexandregpereira/hunter/spell/compendium/SpellCompendiumState.kt

@@ -4,6 +4,7 @@ data class SpellCompendiumState(
     val isShowing: Boolean = false,
     val spellsGroupByLevel: Map<String, List<SpellCompendiumItemState>> = emptyMap(),
     val searchText: String = "",
+    val searchTextLabel: String = "",
     val initialItemIndex: Int = 0,
 )
 

feature/spell-compendium/state-holder/src/commonMain/kotlin/br/alexandregpereira/hunter/spell/compendium/SpellCompendiumStateHolder.kt

@@ -3,6 +3,7 @@ package br.alexandregpereira.hunter.spell.compendium
 import br.alexandregpereira.hunter.domain.spell.model.Spell
 import br.alexandregpereira.hunter.event.EventDispatcher
 import br.alexandregpereira.hunter.event.EventListener
+import br.alexandregpereira.hunter.localization.AppLocalization
 import br.alexandregpereira.hunter.spell.compendium.domain.GetSpellsUseCase
 import br.alexandregpereira.hunter.spell.compendium.event.SpellCompendiumEvent
 import br.alexandregpereira.hunter.spell.compendium.event.SpellCompendiumResult
@@ -24,12 +25,14 @@ class SpellCompendiumStateHolder internal constructor(
     private val stateHandler: MutableStateHolder<SpellCompendiumState>,
     private val eventListener: EventListener<SpellCompendiumEvent>,
     private val resultDispatcher: EventDispatcher<SpellCompendiumResult>,
+    private val appLocalization: AppLocalization,
 ) : ScopeManager(),
     SpellCompendiumIntent,
     StateHolder<SpellCompendiumState> by stateHandler {
 
     private val searchQuery = MutableStateFlow(state.value.searchText)
     private val originalSpellsGroupByLevel = mutableMapOf<String, List<SpellCompendiumItemState>>()
+    private var strings: SpellCompendiumStrings = getSpellCompendiumStrings(appLocalization.getLanguage())
 
     init {
         debounceSearch()
@@ -43,6 +46,8 @@ class SpellCompendiumStateHolder internal constructor(
         spellIndex: String? = null,
         selectedSpellIndexes: List<String> = emptyList(),
     ) {
+        strings = getSpellCompendiumStrings(appLocalization.getLanguage())
+        stateHandler.setState { copy(searchText = "", searchTextLabel = strings.searchLabel) }
         getSpellsUseCase()
             .onEach { spells ->
                 val spellsGroupByLevel = spells.groupByLevel(selectedSpellIndexes)
@@ -56,7 +61,7 @@ class SpellCompendiumStateHolder internal constructor(
                 stateHandler.setState {
                     copy(
                         spellsGroupByLevel = spellsGroupByLevel,
-                        initialItemIndex = compendiumIndex?.takeIf { it >= 0 } ?: 0
+                        initialItemIndex = compendiumIndex?.takeIf { it >= 0 } ?: 0,
                     )
                 }
             }
@@ -69,9 +74,9 @@ class SpellCompendiumStateHolder internal constructor(
             .onEach { text ->
                 stateHandler.setState {
                     val spellsGroupByLevel = if (text.isNotBlank()){
-                        val spellsFiltered = spellsGroupByLevel.values.flatten()
+                        val spellsFiltered = originalSpellsGroupByLevel.values.flatten()
                             .filter { it.name.contains(text, ignoreCase = true) }
-                        mapOf("${spellsFiltered.size} results" to spellsFiltered)
+                        mapOf(strings.searchResults(spellsFiltered.size) to spellsFiltered)
                     } else originalSpellsGroupByLevel
 
                     copy(spellsGroupByLevel = spellsGroupByLevel)
@@ -123,8 +128,8 @@ class SpellCompendiumStateHolder internal constructor(
 
     private fun Int.getSpellLevelText(): String {
         return when (this) {
-            0 -> "Cantrip"
-            else -> "Level $this"
+            0 -> strings.cantrips
+            else -> strings.level(this)
         }
     }
 

feature/spell-compendium/state-holder/src/commonMain/kotlin/br/alexandregpereira/hunter/spell/compendium/SpellCompendiumStrings.kt

@@ -0,0 +1,31 @@
+package br.alexandregpereira.hunter.spell.compendium
+
+import br.alexandregpereira.hunter.localization.Language
+
+internal class SpellCompendiumEnStrings : SpellCompendiumStrings {
+    override val searchResults: (Int) -> String = { count -> "$count results" }
+    override val cantrips: String = "Cantrips"
+    override val level: (Int) -> String = { level -> "Level $level" }
+    override val searchLabel: String = "Search"
+}
+
+internal class SpellCompendiumPtStrings : SpellCompendiumStrings {
+    override val searchResults: (Int) -> String = { count -> "$count resultados" }
+    override val cantrips: String = "Truques"
+    override val level: (Int) -> String = { level -> "${level}º Círculo" }
+    override val searchLabel: String = "Buscar"
+}
+
+internal interface SpellCompendiumStrings {
+    val searchResults: (Int) -> String
+    val cantrips: String
+    val level: (Int) -> String
+    val searchLabel: String
+}
+
+internal fun getSpellCompendiumStrings(lang: Language): SpellCompendiumStrings {
+    return when (lang) {
+        Language.ENGLISH -> SpellCompendiumEnStrings()
+        Language.PORTUGUESE -> SpellCompendiumPtStrings()
+    }
+}

feature/spell-compendium/state-holder/src/commonMain/kotlin/br/alexandregpereira/hunter/spell/compendium/di/Module.kt

@@ -29,7 +29,8 @@ val spellCompendiumStateModule = module {
             getSpellsUseCase = get(),
             stateHandler = MutableStateHolder(SpellCompendiumState()),
             eventListener = get<SpellCompendiumEventManager>(),
-            resultDispatcher = get<SpellCompendiumEventManager>()
+            resultDispatcher = get<SpellCompendiumEventManager>(),
+            appLocalization = get(),
         )
     }
 }

settings.gradle

@@ -10,6 +10,7 @@ include ':app'
 
 include ':core:analytics'
 include ':core:event'
+include ':core:localization'
 include ':core:state-holder'
 include ':core:uuid'
 

shared/build.gradle.kts

@@ -25,6 +25,7 @@ kotlin {
         val commonMain by getting {
             dependencies {
                 implementation(project(":core:analytics"))
+                implementation(project(":core:localization"))
                 implementation(project(":domain:app:data"))
                 implementation(project(":domain:app:core"))
                 implementation(project(":domain:sync:core"))

shared/src/commonMain/kotlin/br/alexandregpereira/hunter/shared/di/AppModule.kt

@@ -23,6 +23,7 @@ import br.alexandregpereira.hunter.event.folder.insert.emptyFolderInsertEventDis
 import br.alexandregpereira.hunter.event.monster.lore.detail.emptyMonsterLoreDetailEventDispatcher
 import br.alexandregpereira.hunter.folder.preview.event.emptyFolderPreviewEventDispatcher
 import br.alexandregpereira.hunter.folder.preview.event.emptyFolderPreviewResultListener
+import br.alexandregpereira.hunter.localization.di.localizationModule
 import br.alexandregpereira.hunter.monster.compendium.state.di.monsterCompendiumStateModule
 import br.alexandregpereira.hunter.monster.detail.di.monsterDetailStateModule
 import br.alexandregpereira.hunter.monster.registration.event.emptyMonsterRegistrationEventDispatcher
@@ -38,6 +39,7 @@ fun appModules(): List<Module> = domainModules + dataModules +
         monsterDetailStateModule +
         syncStateModule +
         analyticsModule +
+        localizationModule +
         module {
             factory { Dispatchers.Default }
             factory {