feat(settings): apply current character theme to all character cards

app/src/main/java/com/ai/assistance/operit/data/preferences/ActivePromptManager.kt

@@ -104,6 +104,21 @@ class ActivePromptManager private constructor(context: Context) {
         }
     }
 
+    suspend fun applyVisualThemeToAllCharacterCards(values: ThemePreferenceValues) {
+        themeOperations.runTransition {
+            val characterCardIds = characterCardManager.getAllCharacterCards()
+                .map { it.id }
+                .toMutableList()
+            if (characterCardIds.none { it == CharacterCardManager.DEFAULT_CHARACTER_CARD_ID }) {
+                characterCardIds.add(0, CharacterCardManager.DEFAULT_CHARACTER_CARD_ID)
+            }
+            userPreferencesManager.applyVisualThemeToCharacterCards(
+                values = values,
+                characterCardIds = characterCardIds,
+            )
+        }
+    }
+
     suspend fun saveAiAvatarForPrompt(target: ActivePrompt, avatarUri: String?) {
         themeOperations.runTransition {
             when (target) {

app/src/main/java/com/ai/assistance/operit/data/preferences/UserPreferencesManager.kt

@@ -1180,6 +1180,28 @@ class UserPreferencesManager private constructor(private val context: Context) {
         )
     }
 
+    /**
+     * Overwrite the visual theme of every listed character card.
+     * Background, fonts, and user avatars are part of that visual set and
+     * are copied with it. Character-card identity keys stay on each card.
+     */
+    suspend fun applyVisualThemeToCharacterCards(
+        values: ThemePreferenceValues,
+        characterCardIds: Collection<String>,
+    ) {
+        val targetIds = characterCardIds.map { it.trim() }.filter { it.isNotEmpty() }.distinct()
+        if (targetIds.isEmpty()) return
+        context.userPreferencesDataStore.edit { preferences ->
+            targetIds.forEach { characterCardId ->
+                writeVisualThemeValues(
+                    preferences,
+                    getCharacterCardThemePrefix(characterCardId),
+                    values,
+                )
+            }
+        }
+    }
+
     suspend fun deleteCharacterCardTheme(characterCardId: String) {
         deleteThemeByPrefix(getCharacterCardThemePrefix(characterCardId))
     }

app/src/main/java/com/ai/assistance/operit/ui/features/settings/screens/theme/ThemeSettingsContentEditor.kt

@@ -153,6 +153,7 @@ internal fun ThemeSettingsContentEditor(
     var pendingAction by remember { mutableStateOf<ThemeEditorPendingAction?>(null) }
     var exitContinuation by remember { mutableStateOf<CancellableContinuation<Boolean>?>(null) }
     var isSaving by remember { mutableStateOf(false) }
+    var showApplyToAllConfirm by remember { mutableStateOf(false) }
     var targetSwitchesInFlight by remember { mutableStateOf(0) }
     val scrollState = androidx.compose.foundation.rememberScrollState()
 
@@ -310,6 +311,48 @@ internal fun ThemeSettingsContentEditor(
         }
     }
 
+    fun applyCurrentThemeToAllCharacterCards() {
+        val state = editorState ?: return
+        if (state.target !is ActivePrompt.CharacterCard) return
+        val draft = state.session
+        if (isSaving || pendingAction != null) return
+        val savedValues = draft.currentValues
+        val resetRequested = draft.isResetRequested
+        isSaving = true
+        showApplyToAllConfirm = false
+        draft.beginSave(savedValues)
+        scope.launch {
+            try {
+                if (resetRequested) {
+                    activePromptManager.resetThemeDraft(state.target, savedValues)
+                } else {
+                    activePromptManager.commitThemeDraft(state.target, savedValues)
+                }
+                activePromptManager.applyVisualThemeToAllCharacterCards(savedValues)
+                draft.markSaved(savedValues)
+                showSaveSuccessMessage = true
+                Toast.makeText(
+                    context,
+                    context.getString(R.string.theme_applied_to_all_character_cards),
+                    Toast.LENGTH_SHORT,
+                ).show()
+            } catch (e: CancellationException) {
+                draft.cancelSave()
+                throw e
+            } catch (e: Exception) {
+                draft.cancelSave()
+                AppLogger.e("ThemeSettings", "Failed to apply theme to all character cards", e)
+                Toast.makeText(
+                    context,
+                    context.getString(R.string.theme_apply_to_all_character_cards_failed),
+                    Toast.LENGTH_LONG,
+                ).show()
+            } finally {
+                isSaving = false
+            }
+        }
+    }
+
     RegisterRouteBackGuard {
         if (pendingAction != null) {
             return@RegisterRouteBackGuard false
@@ -417,15 +460,46 @@ internal fun ThemeSettingsContentEditor(
                             onShowSaveSuccessMessageChange = { showSaveSuccessMessage = it },
                             saveEnabled = hasUnsavedChanges && !isSaving,
                             isSaving = isSaving,
+                            showApplyToAll = editorTarget is ActivePrompt.CharacterCard,
+                            applyToAllEnabled = editorState != null && !isSaving && pendingAction == null,
                             onSave = ::saveCurrentDraft,
                             onReset = draft::reset,
+                            onApplyToAllCharacterCards = { showApplyToAllConfirm = true },
                         )
                     },
                 )
             }
         }
     }
 
+    if (showApplyToAllConfirm) {
+        AlertDialog(
+            onDismissRequest = {
+                if (!isSaving) {
+                    showApplyToAllConfirm = false
+                }
+            },
+            title = { Text(stringResource(R.string.theme_apply_to_all_character_cards_title)) },
+            text = { Text(stringResource(R.string.theme_apply_to_all_character_cards_message)) },
+            confirmButton = {
+                TextButton(
+                    onClick = ::applyCurrentThemeToAllCharacterCards,
+                    enabled = !isSaving,
+                ) {
+                    Text(stringResource(R.string.theme_apply_to_all_character_cards_confirm))
+                }
+            },
+            dismissButton = {
+                TextButton(
+                    onClick = { showApplyToAllConfirm = false },
+                    enabled = !isSaving,
+                ) {
+                    Text(stringResource(R.string.cancel_action))
+                }
+            },
+        )
+    }
+
     if (pendingAction != null) {
         AlertDialog(
             onDismissRequest = {

app/src/main/java/com/ai/assistance/operit/ui/features/settings/screens/theme/ThemeSettingsTabs.kt

@@ -114,8 +114,11 @@ internal fun ThemeSettingsFooter(
     onShowSaveSuccessMessageChange: (Boolean) -> Unit,
     saveEnabled: Boolean,
     isSaving: Boolean,
+    showApplyToAll: Boolean,
+    applyToAllEnabled: Boolean,
     onSave: () -> Unit,
     onReset: () -> Unit,
+    onApplyToAllCharacterCards: () -> Unit,
 ) {
     Button(
         onClick = onSave,
@@ -131,6 +134,16 @@ internal fun ThemeSettingsFooter(
         Text(stringResource(id = R.string.save_action))
     }
 
+    if (showApplyToAll) {
+        OutlinedButton(
+            onClick = onApplyToAllCharacterCards,
+            enabled = applyToAllEnabled,
+            modifier = Modifier.fillMaxWidth().padding(top = 8.dp),
+        ) {
+            Text(stringResource(id = R.string.theme_apply_to_all_character_cards))
+        }
+    }
+
     OutlinedButton(
         onClick = onReset,
         enabled = !isSaving,

app/src/main/res/values-en/strings.xml

@@ -839,6 +839,12 @@
     <string name="theme_select_image">Select Image</string>
     <string name="theme_bg_opacity">Background opacity: %1$d%%</string>
     <string name="theme_reset">Reset to Default Theme</string>
+    <string name="theme_apply_to_all_character_cards">Apply to all character cards</string>
+    <string name="theme_apply_to_all_character_cards_title">Apply to all character cards?</string>
+    <string name="theme_apply_to_all_character_cards_message">The current theme will overwrite every character card and cannot be undone. Continue?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Continue</string>
+    <string name="theme_applied_to_all_character_cards">Applied to all character cards</string>
+    <string name="theme_apply_to_all_character_cards_failed">Failed to apply theme to all character cards</string>
     <string name="theme_saved">Settings saved</string>
     <string name="theme_select_target">Select theme target</string>
     <string name="theme_unsaved_title">Save theme changes?</string>

app/src/main/res/values-es/strings.xml

@@ -540,6 +540,12 @@
     <string name="theme_select_image">Seleccionar imagen</string>
     <string name="theme_bg_opacity">Opacidad del fondo: %1$d%%</string>
     <string name="theme_reset">Restablecer al tema predeterminado</string>
+    <string name="theme_apply_to_all_character_cards">Aplicar a todas las tarjetas de personaje</string>
+    <string name="theme_apply_to_all_character_cards_title">¿Aplicar a todas las tarjetas de personaje?</string>
+    <string name="theme_apply_to_all_character_cards_message">La opción actual sobrescribirá todas las tarjetas de personaje y no se puede deshacer. ¿Continuar?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Continuar</string>
+    <string name="theme_applied_to_all_character_cards">Aplicado a todas las tarjetas de personaje</string>
+    <string name="theme_apply_to_all_character_cards_failed">Error al aplicar el tema a todas las tarjetas de personaje</string>
     <string name="theme_saved">Configuración guardada</string>
     <string name="theme_video_too_large">El archivo de video es demasiado grande, lo que puede causar que la aplicación se retrase o se bloquee. Por favor, seleccione un video de menos de 30MB.</string>
     <string name="theme_video_saved">Video de fondo guardado</string>

app/src/main/res/values-id/strings.xml

@@ -477,6 +477,12 @@
     <string name="theme_select_image">Pilih Gambar</string>
     <string name="theme_bg_opacity">Opasitas Latar Belakang: %1$d%%</string>
     <string name="theme_reset">Reset ke Tema Bawaan</string>
+    <string name="theme_apply_to_all_character_cards">Terapkan ke semua kartu karakter</string>
+    <string name="theme_apply_to_all_character_cards_title">Terapkan ke semua kartu karakter?</string>
+    <string name="theme_apply_to_all_character_cards_message">Pilihan saat ini akan menimpa semua kartu karakter dan tidak dapat dibatalkan. Lanjutkan?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Lanjutkan</string>
+    <string name="theme_applied_to_all_character_cards">Diterapkan ke semua kartu karakter</string>
+    <string name="theme_apply_to_all_character_cards_failed">Gagal menerapkan tema ke semua kartu karakter</string>
     <string name="theme_saved">Pengaturan telah disimpan</string>
     <string name="theme_video_too_large">File video terlalu besar, dapat menyebabkan aplikasi lag atau crash. Pilih video kurang dari 30MB.</string>
     <string name="theme_video_saved">Video latar belakang telah disimpan</string>

app/src/main/res/values-ko/strings.xml

@@ -685,6 +685,12 @@
     <string name="theme_select_image">이미지 선택</string>
     <string name="theme_bg_opacity">배경 불투명도: %1$d%%</string>
     <string name="theme_reset">기본 테마로 재설정</string>
+    <string name="theme_apply_to_all_character_cards">모든 캐릭터 카드에 적용</string>
+    <string name="theme_apply_to_all_character_cards_title">모든 캐릭터 카드에 적용할까요?</string>
+    <string name="theme_apply_to_all_character_cards_message">현재 옵션이 모든 캐릭터 카드를 덮어쓰며 되돌릴 수 없습니다. 계속할까요?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">계속</string>
+    <string name="theme_applied_to_all_character_cards">모든 캐릭터 카드에 적용되었습니다</string>
+    <string name="theme_apply_to_all_character_cards_failed">모든 캐릭터 카드에 테마를 적용하지 못했습니다</string>
     <string name="theme_saved">설정이 저장되었습니다.</string>
     <string name="theme_video_too_large">동영상 파일이 너무 커서 지연이나 충돌이 발생할 수 있습니다. 30MB 미만의 동영상을 선택하세요.</string>
     <string name="theme_video_saved">배경 동영상이 저장되었습니다.</string>

app/src/main/res/values-ms/strings.xml

@@ -649,6 +649,12 @@
     <string name="theme_select_image">Pilih Gambar</string>
     <string name="theme_bg_opacity">Kelegapan latar belakang: %1$d%%</string>
     <string name="theme_reset">Tetapkan Semula ke Tema Lalai</string>
+    <string name="theme_apply_to_all_character_cards">Gunakan pada semua kad watak</string>
+    <string name="theme_apply_to_all_character_cards_title">Gunakan pada semua kad watak?</string>
+    <string name="theme_apply_to_all_character_cards_message">Pilihan semasa akan menimpa semua kad watak dan tidak boleh dibuat asal. Teruskan?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Teruskan</string>
+    <string name="theme_applied_to_all_character_cards">Telah digunakan pada semua kad watak</string>
+    <string name="theme_apply_to_all_character_cards_failed">Gagal menggunakan tema pada semua kad watak</string>
     <string name="theme_saved">Tetapan telah disimpan</string>
     <string name="theme_video_too_large">Fail video terlalu besar, mungkin menyebabkan aplikasi tersekat atau terhenti. Sila pilih video kurang daripada 30MB.</string>
     <string name="theme_video_saved">Video latar belakang telah disimpan</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -675,6 +675,12 @@
     <string name="theme_select_image">Selecione a imagem</string>
     <string name="theme_bg_opacity">Opacidade do plano de fundo: %1$d%%</string>
     <string name="theme_reset">Redefinir para o tema padrão</string>
+    <string name="theme_apply_to_all_character_cards">Aplicar a todos os cartões de personagem</string>
+    <string name="theme_apply_to_all_character_cards_title">Aplicar a todos os cartões de personagem?</string>
+    <string name="theme_apply_to_all_character_cards_message">A opção atual substituirá todos os cartões de personagem e não poderá ser desfeita. Continuar?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Continuar</string>
+    <string name="theme_applied_to_all_character_cards">Aplicado a todos os cartões de personagem</string>
+    <string name="theme_apply_to_all_character_cards_failed">Falha ao aplicar o tema a todos os cartões de personagem</string>
     <string name="theme_saved">Configurações salvas</string>
     <string name="theme_video_too_large">Arquivos de vídeo muito grandes podem fazer com que o aplicativo congele ou trave. Escolha um vídeo menor que 30 MB.</string>
     <string name="theme_video_saved">Vídeo de fundo salvo</string>

app/src/main/res/values-ro/strings.xml

@@ -751,6 +751,12 @@
     <string name="theme_select_image">Alege o imagine</string>
     <string name="theme_bg_opacity">Opacitatea fundalului: %1$d%%</string>
     <string name="theme_reset">Researează la tema implicită</string>
+    <string name="theme_apply_to_all_character_cards">Aplică la toate cărțile de personaj</string>
+    <string name="theme_apply_to_all_character_cards_title">Aplici la toate cărțile de personaj?</string>
+    <string name="theme_apply_to_all_character_cards_message">Opțiunea curentă va suprascrie toate cărțile de personaj și nu poate fi anulată. Continui?</string>
+    <string name="theme_apply_to_all_character_cards_confirm">Continuă</string>
+    <string name="theme_applied_to_all_character_cards">Aplicat la toate cărțile de personaj</string>
+    <string name="theme_apply_to_all_character_cards_failed">Nu s-a putut aplica tema la toate cărțile de personaj</string>
     <string name="theme_saved">Setările au fost salvate</string>
     <string name="theme_video_too_large">Fișierul video este prea mare, ceea ce poate duce la încetinirea sau blocarea aplicației. Vă rugăm să alegeți un fișier mai mic de30MBvideoclipul.</string>
     <string name="theme_video_saved">Videoclipul de fundal a fost salvat</string>

app/src/main/res/values/strings.xml

@@ -750,6 +750,12 @@
     <string name="theme_select_image">选择图片</string>
     <string name="theme_bg_opacity">背景不透明度: %1$d%%</string>
     <string name="theme_reset">重置为默认主题</string>
+    <string name="theme_apply_to_all_character_cards">应用到全部角色卡</string>
+    <string name="theme_apply_to_all_character_cards_title">应用到全部角色卡？</string>
+    <string name="theme_apply_to_all_character_cards_message">当前选项会覆盖所有角色卡，且不可撤销，是否继续？</string>
+    <string name="theme_apply_to_all_character_cards_confirm">继续</string>
+    <string name="theme_applied_to_all_character_cards">已应用到全部角色卡</string>
+    <string name="theme_apply_to_all_character_cards_failed">应用到全部角色卡失败</string>
     <string name="theme_saved">设置已保存</string>
     <string name="theme_select_target">选择主题对象</string>
     <string name="theme_unsaved_title">保存主题修改？</string>