feat: Reply with euria

app/src/main/java/com/infomaniak/mail/MatomoMail.kt

@@ -282,6 +282,7 @@ object MatomoMail : Matomo {
         ReplyMaybe("replyMaybe"),
         ReplyNo("replyNo"),
         ReplyYes("replyYes"),
+        ReplyWithEuria("replyWithEuria"),
         ReprogramSchedule("reprogramSchedule"),
         RequestPassword("requestPassword"),
         Restore("restore"),
@@ -327,6 +328,7 @@ object MatomoMail : Matomo {
         Summarize("summarize"),
         Translate("translate"),
         AskEuria("askEuria"),
+        AskEuriaShortCut("askEuriaShortCut"),
         Switch("switch"),
         SwitchAccount("switchAccount"),
         SwitchColor("switchColor"),

app/src/main/java/com/infomaniak/mail/data/LocalSettings.kt

@@ -45,6 +45,7 @@ class LocalSettings private constructor(context: Context) : SharedValues {
 
     override val sharedPreferences = context.applicationContext.getSharedPreferences(SHARED_PREFS_NAME, Context.MODE_PRIVATE)!!
 
+    var alreadyUsedReplyWithEuria by sharedValue("alreadyUsedReplyWithEuriaKey", false)
     var cancelDelay by sharedValue("cancelDelayKey", 10)
     var emailForwarding by sharedValue("emailForwardingKey", EmailForwarding.IN_BODY)
     var includeMessageInReply by sharedValue("includeMessageInReplyKey", true)

app/src/main/java/com/infomaniak/mail/data/cache/AiDraftCache.kt

@@ -0,0 +1,27 @@
+/*
+ * Infomaniak Mail - Android
+ * Copyright (C) 2026 Infomaniak Network SA
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.infomaniak.mail.data.cache
+
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class AiDraftCache @Inject constructor() {
+    var pendingAiSubject: String? = null
+    var pendingAiContent: String? = null
+}

app/src/main/java/com/infomaniak/mail/ui/main/thread/ThreadAdapter.kt

@@ -1192,6 +1192,10 @@ class ThreadAdapter(
             isVisible = isExpanded && !message.isScheduledDraft && !message.isScheduledMessage
             setOnClickListener { threadAdapterCallbacks?.onMenuClicked?.invoke(message) }
         }
+        askEuriaButton.apply {
+            isVisible = isExpanded && !message.isScheduledDraft && !message.isScheduledMessage
+            setOnClickListener { threadAdapterCallbacks?.onAskEuriaClicked?.invoke(message) }
+        }
         sendingProgressText.isVisible = message.isScheduledMessage
 
         recipient.text = if (isExpanded) getAllRecipientsFormatted(message) else context.formatSubject(message.subject)
@@ -1404,6 +1408,7 @@ class ThreadAdapter(
         var onAiBannerClose: ((messageUid: String, aiAction: AiAction) -> Unit)? = null,
         var onShowOriginal: ((messageUid: String) -> Unit)? = null,
         var getAiState: (() -> AiStateMap)? = null,
+        var onAskEuriaClicked: ((message: Message) -> Unit)? = null,
     )
 
     enum class DisplayType(val layout: Int) {

app/src/main/java/com/infomaniak/mail/ui/main/thread/ThreadFragment.kt

@@ -117,6 +117,7 @@ import com.infomaniak.mail.ui.main.thread.actions.AskEuriaBottomSheetDialogArgs
 import com.infomaniak.mail.ui.main.thread.actions.AttachmentActionsBottomSheetDialogArgs
 import com.infomaniak.mail.ui.main.thread.actions.ConfirmationToBlockUserDialog
 import com.infomaniak.mail.ui.main.thread.actions.EmojiReactionsViewModel
+import com.infomaniak.mail.ui.main.thread.actions.EuriaPromptBottomSheetArgs
 import com.infomaniak.mail.ui.main.thread.actions.JunkMessagesViewModel
 import com.infomaniak.mail.ui.main.thread.actions.MessageActionsBottomSheetDialogArgs
 import com.infomaniak.mail.ui.main.thread.actions.ReplyBottomSheetDialogArgs
@@ -125,6 +126,8 @@ import com.infomaniak.mail.ui.main.thread.actions.ThreadActionsBottomSheetDialog
 import com.infomaniak.mail.ui.main.thread.calendar.AttendeesBottomSheetDialogArgs
 import com.infomaniak.mail.ui.main.thread.encryption.UnencryptableRecipientsBottomSheetDialogArgs
 import com.infomaniak.mail.ui.main.thread.models.MessageUi
+import com.infomaniak.mail.ui.newMessage.AiPropositionFragmentArgs
+import com.infomaniak.mail.ui.newMessage.AiViewModel
 import com.infomaniak.mail.utils.FolderRoleUtils
 import com.infomaniak.mail.utils.PermissionUtils
 import com.infomaniak.mail.utils.SharedUtils
@@ -221,6 +224,7 @@ class ThreadFragment : Fragment(), PickerEmojiObserver {
     private val junkMessagesViewModel: JunkMessagesViewModel by activityViewModels()
     private val twoPaneViewModel: TwoPaneViewModel by activityViewModels()
     private val threadViewModel: ThreadViewModel by viewModels()
+    private val aiViewModel: AiViewModel by activityViewModels()
     private val aiActionsViewModel: AiActionsViewModel by viewModels()
     private val actionsViewModel: ActionsViewModel by activityViewModels()
     private val emojiReactionsViewModel: EmojiReactionsViewModel by viewModels()
@@ -491,6 +495,9 @@ class ThreadFragment : Fragment(), PickerEmojiObserver {
                 onAiBannerClose = { messageUid, aiAction -> aiActionsViewModel.dismissAiAction(messageUid, aiAction) },
                 onShowOriginal = { messageUid -> aiActionsViewModel.dismissAiAction(messageUid, AiAction.TRANSLATE) },
                 getAiState = { aiActionsViewModel.aiStateMap.value },
+                onAskEuriaClicked = { message ->
+                    trackMessageActionsEvent(MatomoName.AskEuriaShortCut)
+                    navigateToAskEuriaBottomSheet(message.uid) },
             ),
         )
 
@@ -915,6 +922,27 @@ class ThreadFragment : Fragment(), PickerEmojiObserver {
                 aiActionsViewModel.doAiAction(messageUid, AiAction.TRANSLATE)
             }
         }
+
+        getBackNavigationResult<AiActionNavigationResult>(OPEN_AI_REPLY_BOTTOM_SHEET) { (messageUid, _) ->
+            aiViewModel.resetAiState()
+            safeNavigate(
+                resId = R.id.euriaPromptBottomSheetDialog,
+                args = EuriaPromptBottomSheetArgs(
+                    messageUid = messageUid
+                ).toBundle(),
+            )
+        }
+
+        getBackNavigationResult(OPEN_AI_REPLY_PROPOSITION) { messageUid: String ->
+            aiViewModel.aiPropositionStatusLiveData.value = null
+            safeNavigate(
+                resId = R.id.aiPropositionFragment, args = AiPropositionFragmentArgs(
+                    isSubjectBlank = true,
+                    isBodyBlank = true,
+                    messageUid = messageUid
+                ).toBundle()
+            )
+        }
     }
 
     private fun executeSavedSnoozeScheduleType(timestamp: Long) {
@@ -1389,8 +1417,10 @@ class ThreadFragment : Fragment(), PickerEmojiObserver {
 
         const val OPEN_REACTION_BOTTOM_SHEET = "openReactionBottomSheet"
         const val OPEN_AI_ACTIONS_BOTTOM_SHEET = "openAiActionsBottomSheet"
+        const val OPEN_AI_REPLY_BOTTOM_SHEET = "openAiReplyPromptBottomSheet"
         const val OPEN_AI_SUMMARY_BOTTOM_SHEET = "openAiSummaryBottomSheet"
         const val OPEN_AI_TRANSLATE_BOTTOM_SHEET = "openAiTranslateBottomSheet"
+        const val OPEN_AI_REPLY_PROPOSITION = "openAiReplyProposition"
 
         private fun allAttachmentsFileName(subject: String) = "infomaniak-mail-attachments-$subject.zip"
         private fun allSwissTransferFilesName(subject: String) = "infomaniak-mail-swisstransfer-$subject.zip"

app/src/main/java/com/infomaniak/mail/ui/main/thread/actions/ActionItemView.kt

@@ -55,6 +55,12 @@ class ActionItemView @JvmOverloads constructor(
             setTrailingContentUi(value)
         }
 
+    var newFeatureBadgeVisible: Boolean
+        get() = binding.newFeatureBadge.isVisible
+        set(value) {
+            binding.newFeatureBadge.isVisible = value
+        }
+
     init {
         attrs?.getAttributes(context, R.styleable.ActionItemView) {
             with(binding) {

app/src/main/java/com/infomaniak/mail/ui/main/thread/actions/AskEuriaBottomSheetDialog.kt

@@ -23,20 +23,36 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.activityViewModels
 import androidx.navigation.fragment.navArgs
+import com.infomaniak.core.ksuite.data.KSuite
 import com.infomaniak.core.legacy.utils.safeBinding
 import com.infomaniak.core.legacy.utils.setBackNavigationResult
 import com.infomaniak.mail.MatomoMail.MatomoName
 import com.infomaniak.mail.MatomoMail.trackBottomSheetThreadActionsEvent
+import com.infomaniak.mail.data.LocalSettings
+import com.infomaniak.mail.data.models.extensions.kSuite
 import com.infomaniak.mail.databinding.BottomSheetAskEuriaActionsBinding
+import com.infomaniak.mail.ui.MainViewModel
 import com.infomaniak.mail.ui.main.thread.AiActionNavigationResult
+import com.infomaniak.mail.ui.main.thread.ThreadFragment.Companion.OPEN_AI_REPLY_BOTTOM_SHEET
 import com.infomaniak.mail.ui.main.thread.ThreadFragment.Companion.OPEN_AI_SUMMARY_BOTTOM_SHEET
 import com.infomaniak.mail.ui.main.thread.ThreadFragment.Companion.OPEN_AI_TRANSLATE_BOTTOM_SHEET
+import com.infomaniak.mail.ui.main.thread.actions.ActionItemView.TrailingContent
 import com.infomaniak.mail.ui.main.thread.actions.multiselection.MultiselectionViewModel
+import com.infomaniak.mail.utils.openKSuiteProBottomSheet
+import com.infomaniak.mail.utils.openMailPremiumBottomSheet
+import com.infomaniak.mail.utils.openMyKSuiteUpgradeBottomSheet
+import dagger.hilt.android.AndroidEntryPoint
+import javax.inject.Inject
 
+@AndroidEntryPoint
 class AskEuriaBottomSheetDialog : ActionsBottomSheetDialog() {
 
     private var binding: BottomSheetAskEuriaActionsBinding by safeBinding()
     override val multiselectionViewModel: MultiselectionViewModel by activityViewModels()
+    private val mainViewModel: MainViewModel by activityViewModels()
+
+    @Inject
+    lateinit var localSettings: LocalSettings
     private val navigationArgs: AskEuriaBottomSheetDialogArgs by navArgs()
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
@@ -55,6 +71,41 @@ class AskEuriaBottomSheetDialog : ActionsBottomSheetDialog() {
             trackBottomSheetThreadActionsEvent(MatomoName.Translate)
             setBackNavigationResult(OPEN_AI_TRANSLATE_BOTTOM_SHEET, AiActionNavigationResult(messageUid, isAlreadyTranslated))
         }
+
+        setupReplyAction(messageUid)
+    }
+
+    private fun setupReplyAction(messageUid: String) {
+        val mailbox = mainViewModel.currentMailbox.value
+        val kSuite = mailbox?.kSuite
+
+        val matomoName = MatomoName.AiWriter.value
+        binding.reply.trailingContent = when (kSuite) {
+            KSuite.Perso.Free -> TrailingContent.KSuitePersoChip
+            KSuite.Pro.Free, KSuite.StarterPack -> TrailingContent.KSuiteProChip
+            else -> {
+                binding.reply.newFeatureBadgeVisible = !localSettings.alreadyUsedReplyWithEuria
+                TrailingContent.None
+            }
+        }
+
+        if (binding.reply.trailingContent != TrailingContent.None) {
+            binding.reply.setOnClickListener {
+                when (kSuite) {
+                    KSuite.Perso.Free -> openMyKSuiteUpgradeBottomSheet(matomoName)
+                    KSuite.Pro.Free -> openKSuiteProBottomSheet(kSuite, mailbox.isAdmin, matomoName)
+                    KSuite.StarterPack -> openMailPremiumBottomSheet(matomoName)
+                    else -> Unit
+                }
+            }
+        } else {
+            binding.reply.setOnClickListener {
+                trackBottomSheetThreadActionsEvent(MatomoName.ReplyWithEuria)
+                localSettings.alreadyUsedReplyWithEuria = true
+                binding.reply.newFeatureBadgeVisible = false
+                setBackNavigationResult(OPEN_AI_REPLY_BOTTOM_SHEET, AiActionNavigationResult(messageUid, false))
+            }
+        }
     }
 }
 

app/src/main/java/com/infomaniak/mail/ui/main/thread/actions/EuriaPromptBottomSheet.kt

@@ -0,0 +1,60 @@
+/*
+ * Infomaniak Mail - Android
+ * Copyright (C) 2026 Infomaniak Network SA
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.infomaniak.mail.ui.main.thread.actions
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.activityViewModels
+import androidx.navigation.fragment.navArgs
+import com.infomaniak.core.legacy.utils.safeBinding
+import com.infomaniak.core.legacy.utils.setBackNavigationResult
+import com.infomaniak.mail.R
+import com.infomaniak.mail.databinding.ViewAiPromptBinding
+import com.infomaniak.mail.ui.bottomSheetDialogs.EdgeToEdgeBottomSheetDialog
+import com.infomaniak.mail.ui.main.thread.ThreadFragment.Companion.OPEN_AI_REPLY_PROPOSITION
+import com.infomaniak.mail.ui.newMessage.AiViewModel
+import dagger.hilt.android.AndroidEntryPoint
+
+@AndroidEntryPoint
+class EuriaPromptBottomSheet : EdgeToEdgeBottomSheetDialog() {
+
+    private var binding: ViewAiPromptBinding by safeBinding()
+    private val aiViewModel: AiViewModel by activityViewModels()
+    private val navigationArgs: EuriaPromptBottomSheetArgs by navArgs()
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        return ViewAiPromptBinding.inflate(inflater, container, false).also { binding = it }.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        binding.root.bind(
+            prompt = aiViewModel.aiPrompt,
+            placeholder = getString(R.string.aiPromptAnswer),
+            onCloseClick = { dismiss() },
+            onGenerateClick = {
+                setBackNavigationResult(OPEN_AI_REPLY_PROPOSITION, navigationArgs.messageUid)
+            },
+            onPromptChanged = { aiViewModel.aiPrompt = it },
+        )
+        binding.root.focusPrompt()
+    }
+}