A few things, again...

- Added ability to write character (incomplete) - Renamed BottomNavItem.kt to NavigationItems.kt, as it covers the entire application navigation, not just the bottom navigation bar - Modified the ScanScreenController and the Impl to accomodate writing characters on the BE (need to do the VB later on) - Modified repositories to fetch data from the database and additional information needed to convert back to NfcCharacter - Function to convert to NfcCharacter Originally this was also going to cover the home screen, since my idea was to have marked as active (the one shown in the home screen) be the one sent to the watch, but for testing I have added a "send to bracelet" button on the pop-up on the storage screen.
2026-01-27 16:05:32 +00:00 · 2025-01-12 00:57:34 +01:00 · 2025-01-12 00:57:34 +01:00 · cac5198488
commit cac5198488
parent 7f22650601
16 changed files with 343 additions and 73 deletions
--- a/app/src/main/java/com/github/nacabaro/vbhelper/daos/CharacterDao.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/daos/CharacterDao.kt
@ -5,6 +5,7 @@ import androidx.room.Insert
 import androidx.room.Query
 import com.github.nacabaro.vbhelper.domain.Character
 import com.github.nacabaro.vbhelper.domain.Sprites
+import com.github.nacabaro.vbhelper.dtos.CharacterDtos

@Dao
 interface CharacterDao {
@ -25,4 +26,15 @@ interface CharacterDao {

    @Query("SELECT * FROM Sprites")
    suspend fun getAllSprites(): List<Sprites>
+
+    @Query("""
+        SELECT 
+            d.dimId as cardId,
+            c.monIndex as charId
+        FROM Character c
+        JOIN UserCharacter uc ON c.id = uc.charId
+        JOIN Dim d ON c.dimId = d.id
+        WHERE uc.id = :charId
+    """)
+    suspend fun getCharacterInfo(charId: Long): CharacterDtos.DiMInfo
 }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/daos/UserCharacterDao.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/daos/UserCharacterDao.kt
@ -21,7 +21,7 @@ interface UserCharacterDao {
    fun insertTransformationHistory(vararg transformationHistory: TransformationHistory)

    @Query("SELECT * FROM TransformationHistory WHERE monId = :monId")
-    fun getTransformationHistory(monId: Int): List<TransformationHistory>
+    fun getTransformationHistory(monId: Long): List<TransformationHistory>

    @Query("""
        SELECT
@ -36,4 +36,7 @@ interface UserCharacterDao {

    @Query("SELECT * FROM UserCharacter WHERE id = :id")
    suspend fun getCharacter(id: Long): UserCharacter
+
+    @Query("SELECT * FROM BECharacterData WHERE id = :id")
+    suspend fun getBeData(id: Long): BECharacterData
 }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/dtos/CharacterDtos.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/dtos/CharacterDtos.kt
@ -1,6 +1,5 @@
 package com.github.nacabaro.vbhelper.dtos

-import androidx.room.PrimaryKey
 import com.github.cfogrady.vbnfc.data.NfcCharacter
 import com.github.nacabaro.vbhelper.domain.DeviceType

@ -29,4 +28,9 @@ object CharacterDtos {
        val spriteWidth: Int,
        val spriteHeight: Int
    )
+
+    data class DiMInfo(
+        val cardId: Int,
+        val charId: Int
+    )
 }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/navigation/AppNavigation.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/navigation/AppNavigation.kt
@ -35,45 +35,51 @@ fun AppNavigation(
    ) { contentPadding ->
        NavHost(
            navController = navController,
-            startDestination = BottomNavItem.Home.route,
+            startDestination = NavigationItems.Home.route,
            modifier = Modifier
                .padding(contentPadding)
        ) {
-            composable(BottomNavItem.Battles.route) {
+            composable(NavigationItems.Battles.route) {
                BattlesScreen()
            }
-            composable(BottomNavItem.Home.route) {
+            composable(NavigationItems.Home.route) {
                HomeScreen(
                    navController = navController
                )
            }
-            composable(BottomNavItem.Storage.route) {
-                StorageScreen()
+            composable(NavigationItems.Storage.route) {
+                StorageScreen(
+                    navController = navController
+                )
            }
-            composable(BottomNavItem.Scan.route) {
+            composable(NavigationItems.Scan.route) {
+                val characterIdString = it.arguments?.getString("characterId")
+                val characterId = characterIdString?.toLongOrNull()
+
                ScanScreen(
                    navController = navController,
                    scanScreenController = applicationNavigationHandlers.scanScreenController,
+                    characterId = characterId
                )
            }
-            composable(BottomNavItem.Dex.route) {
+            composable(NavigationItems.Dex.route) {
                DexScreen(
                    navController = navController
                )
            }
-            composable(BottomNavItem.Settings.route) {
+            composable(NavigationItems.Settings.route) {
                SettingsScreen(
                    navController = navController,
                    settingsScreenController = applicationNavigationHandlers.settingsScreenController,
                    onClickImportCard = onClickImportCard
                )
            }
-            composable(BottomNavItem.Viewer.route) {
+            composable(NavigationItems.Viewer.route) {
                SpriteViewer(
                    navController = navController
                )
            }
-            composable(BottomNavItem.CardView.route) {
+            composable(NavigationItems.CardView.route) {
                val dimId = it.arguments?.getString("dimId")
                Log.d("dimId", dimId.toString())
                if (dimId != null) {
--- a/app/src/main/java/com/github/nacabaro/vbhelper/navigation/BottomNavItem.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/navigation/BottomNavItem.kt
@ -1,18 +0,0 @@
-package com.github.nacabaro.vbhelper.navigation
-
-import com.github.nacabaro.vbhelper.R
-
-sealed class BottomNavItem (
-    var route: String,
-    var icon: Int,
-    var label: String
-) {
-    object Scan : BottomNavItem("Scan", R.drawable.baseline_nfc_24, "Scan")
-    object Battles : BottomNavItem("Battle", R.drawable.baseline_swords_24, "Battle")
-    object Home : BottomNavItem("Home", R.drawable.baseline_cottage_24, "Home")
-    object Dex : BottomNavItem("Dex", R.drawable.baseline_menu_book_24, "Dex")
-    object Storage : BottomNavItem("Storage", R.drawable.baseline_catching_pokemon_24, "Storage")
-    object Settings : BottomNavItem("Settings", R.drawable.baseline_settings_24, "Settings")
-    object Viewer : BottomNavItem("Viewer", R.drawable.baseline_image_24, "Viewer")
-    object CardView : BottomNavItem("Card/{dimId}", R.drawable.baseline_image_24, "Card")
-}
--- a/app/src/main/java/com/github/nacabaro/vbhelper/navigation/BottomNavigationBar.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/navigation/BottomNavigationBar.kt
@ -13,11 +13,11 @@ import androidx.navigation.compose.currentBackStackEntryAsState
@Composable
 fun BottomNavigationBar(navController: NavController) {
    val items = listOf(
-        BottomNavItem.Scan,
-        BottomNavItem.Battles,
-        BottomNavItem.Home,
-        BottomNavItem.Dex,
-        BottomNavItem.Storage,
+        NavigationItems.Scan,
+        NavigationItems.Battles,
+        NavigationItems.Home,
+        NavigationItems.Dex,
+        NavigationItems.Storage,
    )
    NavigationBar {
        val currentBackStackEntry = navController.currentBackStackEntryAsState()
--- a/app/src/main/java/com/github/nacabaro/vbhelper/navigation/NavigationItems.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/navigation/NavigationItems.kt
@ -0,0 +1,18 @@
+package com.github.nacabaro.vbhelper.navigation
+
+import com.github.nacabaro.vbhelper.R
+
+sealed class NavigationItems (
+    var route: String,
+    var icon: Int,
+    var label: String
+) {
+    object Scan : NavigationItems("Scan/{characterId}", R.drawable.baseline_nfc_24, "Scan")
+    object Battles : NavigationItems("Battle", R.drawable.baseline_swords_24, "Battle")
+    object Home : NavigationItems("Home", R.drawable.baseline_cottage_24, "Home")
+    object Dex : NavigationItems("Dex", R.drawable.baseline_menu_book_24, "Dex")
+    object Storage : NavigationItems("Storage", R.drawable.baseline_catching_pokemon_24, "Storage")
+    object Settings : NavigationItems("Settings", R.drawable.baseline_settings_24, "Settings")
+    object Viewer : NavigationItems("Viewer", R.drawable.baseline_image_24, "Viewer")
+    object CardView : NavigationItems("Card/{dimId}", R.drawable.baseline_image_24, "Card")
+}
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/DexScreen.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/DexScreen.kt
@ -19,7 +19,7 @@ import com.github.nacabaro.vbhelper.components.DexDiMEntry
 import com.github.nacabaro.vbhelper.components.TopBanner
 import com.github.nacabaro.vbhelper.di.VBHelper
 import com.github.nacabaro.vbhelper.domain.Dim
-import com.github.nacabaro.vbhelper.navigation.BottomNavItem
+import com.github.nacabaro.vbhelper.navigation.NavigationItems
 import com.github.nacabaro.vbhelper.source.DexRepository
 import kotlinx.coroutines.launch

@ -45,7 +45,7 @@ fun DexScreen(
            TopBanner(
                text = "Discovered Digimon",
                onGearClick = {
-                    navController.navigate(BottomNavItem.Viewer.route)
+                    navController.navigate(NavigationItems.Viewer.route)
                }
            )
        }
@ -65,7 +65,7 @@ fun DexScreen(
                    onClick = {
                        navController
                            .navigate(
-                                BottomNavItem
+                                NavigationItems
                                    .CardView.route
                                    .replace("{dimId}", "${it.id}")
                            )
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/HomeScreen.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/HomeScreen.kt
@ -8,7 +8,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavController
 import com.github.nacabaro.vbhelper.components.TopBanner
-import com.github.nacabaro.vbhelper.navigation.BottomNavItem
+import com.github.nacabaro.vbhelper.navigation.NavigationItems

@Composable
 fun HomeScreen(
@ -19,7 +19,7 @@ fun HomeScreen(
            TopBanner(
                text = "VB Helper",
                onGearClick = {
-                    navController.navigate(BottomNavItem.Settings.route)
+                    navController.navigate(NavigationItems.Settings.route)
                }
            )
        }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/StorageScreen.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/StorageScreen.kt
@ -1,11 +1,11 @@
 package com.github.nacabaro.vbhelper.screens

 import android.util.Log
-import androidx.compose.foundation.Image
 import androidx.compose.foundation.gestures.Orientation
 import androidx.compose.foundation.gestures.scrollable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@ -21,11 +21,9 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@ -34,18 +32,22 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
+import androidx.navigation.NavController
 import com.github.nacabaro.vbhelper.components.CharacterEntry
 import com.github.nacabaro.vbhelper.components.TopBanner
 import com.github.nacabaro.vbhelper.di.VBHelper
 import com.github.nacabaro.vbhelper.domain.device_data.UserCharacter
 import com.github.nacabaro.vbhelper.dtos.CharacterDtos
+import com.github.nacabaro.vbhelper.navigation.NavigationItems
 import com.github.nacabaro.vbhelper.source.StorageRepository
 import com.github.nacabaro.vbhelper.utils.BitmapData
 import kotlinx.coroutines.launch


@Composable
-fun StorageScreen() {
+fun StorageScreen(
+    navController: NavController
+) {
    val coroutineScope = rememberCoroutineScope()
    val application = LocalContext.current.applicationContext as VBHelper
    val storageRepository = StorageRepository(application.container.db)
@ -96,14 +98,24 @@ fun StorageScreen() {
                    ),
                    modifier = Modifier
                        .padding(8.dp)
-                        .size(96.dp)
-
+                        .size(96.dp),
+                    onClick = {
+                        selectedCharacter = index.id
+                    }
                )

                if (selectedCharacter != null) {
                    StorageDialog(
                        characterId = selectedCharacter!!,
-                        onDismissRequest = { selectedCharacter = null }
+                        onDismissRequest = { selectedCharacter = null },
+                        onSendToBracelet = {
+                            navController.navigate(
+                                NavigationItems.Scan.route.replace(
+                                    "{characterId}",
+                                    selectedCharacter.toString()
+                                )
+                            )
+                        }
                    )
                }
            }
@ -114,7 +126,8 @@ fun StorageScreen() {
@Composable
 fun StorageDialog(
    characterId: Long,
-    onDismissRequest: () -> Unit
+    onDismissRequest: () -> Unit,
+    onSendToBracelet: () -> Unit
 ) {
    val coroutineScope = rememberCoroutineScope()
    val application = LocalContext.current.applicationContext as VBHelper
@ -149,10 +162,17 @@ fun StorageDialog(
                            .padding(8.dp)
                    )
                }
-                Button(
-                    onClick = onDismissRequest
-                ) {
-                    Text(text = "Close")
+                Row {
+                    Button(
+                        onClick = onSendToBracelet
+                    ) {
+                        Text(text = "Send to bracelet")
+                    }
+                    Button(
+                        onClick = onDismissRequest
+                    ) {
+                        Text(text = "Close")
+                    }
                }
            }
        }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ReadingCharacter.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ReadingCharacter.kt
@ -15,11 +15,12 @@ import com.github.nacabaro.vbhelper.components.TopBanner

@Composable
 fun ReadingCharacterScreen(
+    topBannerText: String,
    onClickCancel: () -> Unit,
 ) {
    Scaffold (
        topBar = {
-            TopBanner("Reading Character")
+            TopBanner(topBannerText)
        }
    ) { innerPadding ->
        Column (
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreen.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreen.kt
@ -12,6 +12,7 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@ -25,25 +26,48 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.navigation.NavController
 import androidx.navigation.compose.rememberNavController
+import com.github.cfogrady.vbnfc.data.NfcCharacter
 import com.github.nacabaro.vbhelper.ActivityLifecycleListener
 import com.github.nacabaro.vbhelper.components.TopBanner
-import com.github.nacabaro.vbhelper.navigation.BottomNavItem
+import com.github.nacabaro.vbhelper.di.VBHelper
+import com.github.nacabaro.vbhelper.navigation.NavigationItems
+import com.github.nacabaro.vbhelper.source.StorageRepository
 import com.github.nacabaro.vbhelper.source.isMissingSecrets
 import com.github.nacabaro.vbhelper.source.proto.Secrets
+import com.github.nacabaro.vbhelper.utils.characterToNfc
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.withContext

 const val SCAN_SCREEN_ACTIVITY_LIFECYCLE_LISTENER = "SCAN_SCREEN_ACTIVITY_LIFECYCLE_LISTENER"

@Composable
 fun ScanScreen(
    navController: NavController,
+    characterId: Long?,
    scanScreenController: ScanScreenController,
 ) {
    val secrets by scanScreenController.secretsFlow.collectAsState(null)
    var readingScreen by remember { mutableStateOf(false) }
+    var writingScreen by remember { mutableStateOf(false) }
    var isDoneReadingCharacter by remember { mutableStateOf(false) }
+    var isDoneSendingCard by remember { mutableStateOf(false) }
+    var isDoneWritingCharacter by remember { mutableStateOf(false) }

-    DisposableEffect(readingScreen) {
+    val application = LocalContext.current.applicationContext as VBHelper
+    val storageRepository = StorageRepository(application.container.db)
+    var nfcCharacter by remember { mutableStateOf<NfcCharacter?>(null) }
+
+    val context = LocalContext.current
+    LaunchedEffect(storageRepository) {
+        withContext(Dispatchers.IO) {
+            if(characterId != null) {
+                nfcCharacter = characterToNfc(context, characterId)
+            }
+        }
+    }
+
+    DisposableEffect(readingScreen || writingScreen) {
        if(readingScreen) {
            scanScreenController.registerActivityLifecycleListener(SCAN_SCREEN_ACTIVITY_LIFECYCLE_LISTENER, object: ActivityLifecycleListener {
                override fun onPause() {
@ -60,9 +84,39 @@ fun ScanScreen(
            scanScreenController.onClickRead(secrets!!) {
                isDoneReadingCharacter = true
            }
+        } else if (writingScreen) {
+            scanScreenController.registerActivityLifecycleListener(
+                SCAN_SCREEN_ACTIVITY_LIFECYCLE_LISTENER,
+                object : ActivityLifecycleListener {
+                    override fun onPause() {
+                        scanScreenController.cancelRead()
+                    }
+
+                    override fun onResume() {
+                        if (!isDoneSendingCard) {
+                            scanScreenController.onClickCheckCard(secrets!!, nfcCharacter!!) {
+                                isDoneSendingCard = true
+                            }
+                        } else if (!isDoneWritingCharacter) {
+                            scanScreenController.onClickWrite(secrets!!, nfcCharacter!!) {
+                                isDoneWritingCharacter = true
+                            }
+                        }
+                    }
+                }
+            )
+            if (!isDoneSendingCard) {
+                scanScreenController.onClickCheckCard(secrets!!, nfcCharacter!!) {
+                    isDoneSendingCard = true
+                }
+            } else if (!isDoneWritingCharacter) {
+                scanScreenController.onClickWrite(secrets!!, nfcCharacter!!) {
+                    isDoneWritingCharacter = true
+                }
+            }
        }
        onDispose {
-            if(readingScreen) {
+            if(readingScreen || writingScreen) {
                scanScreenController.unregisterActivityLifecycleListener(SCAN_SCREEN_ACTIVITY_LIFECYCLE_LISTENER)
                scanScreenController.cancelRead()
            }
@ -71,33 +125,68 @@ fun ScanScreen(

    if (isDoneReadingCharacter) {
        readingScreen = false
-        navController.navigate(BottomNavItem.Home.route)
+        navController.navigate(NavigationItems.Home.route)
+    } else if (isDoneSendingCard && isDoneWritingCharacter) {
+        writingScreen = false
+        navController.navigate(NavigationItems.Home.route)
    }

    if (readingScreen) {
-        ReadingCharacterScreen {
+        ReadingCharacterScreen("Reading character") {
            readingScreen = false
            scanScreenController.cancelRead()
        }
+    } else if (writingScreen) {
+        if (!isDoneSendingCard) {
+            ReadingCharacterScreen("Sending card") {
+                isDoneSendingCard = true
+                scanScreenController.cancelRead()
+            }
+        } else if (!isDoneWritingCharacter) {
+            ReadingCharacterScreen("Writing character") {
+                isDoneWritingCharacter = true
+                writingScreen = false
+                scanScreenController.cancelRead()
+            }
+        }
    } else {
-        val context = LocalContext.current
        ChooseConnectOption(
-            onClickRead = {
-                if(secrets == null) {
-                    Toast.makeText(context, "Secrets is not yet initialized. Try again.", Toast.LENGTH_SHORT).show()
-                } else if(secrets?.isMissingSecrets() == true) {
-                    Toast.makeText(context, "Secrets not yet imported. Go to Settings and Import APK", Toast.LENGTH_SHORT).show()
-                } else {
-                    readingScreen = true // kicks off nfc adapter in DisposableEffect
+            onClickRead = when {
+                characterId != null -> null
+                else -> {
+                    {
+                        if(secrets == null) {
+                            Toast.makeText(context, "Secrets is not yet initialized. Try again.", Toast.LENGTH_SHORT).show()
+                        } else if(secrets?.isMissingSecrets() == true) {
+                            Toast.makeText(context, "Secrets not yet imported. Go to Settings and Import APK", Toast.LENGTH_SHORT).show()
+                        } else {
+                            readingScreen = true // kicks off nfc adapter in DisposableEffect
+                        }
+                    }
                }
            },
+            onClickWrite = when {
+                nfcCharacter == null -> null
+                else -> {
+                    {
+                        if(secrets == null) {
+                            Toast.makeText(context, "Secrets is not yet initialized. Try again.", Toast.LENGTH_SHORT).show()
+                        } else if(secrets?.isMissingSecrets() == true) {
+                            Toast.makeText(context, "Secrets not yet imported. Go to Settings and Import APK", Toast.LENGTH_SHORT).show()
+                        } else {
+                            writingScreen = true // kicks off nfc adapter in DisposableEffect
+                        }
+                    }
+                }
+            }
        )
    }
 }

@Composable
-private fun ChooseConnectOption(
-    onClickRead: () -> Unit,
+fun ChooseConnectOption(
+    onClickRead: (() -> Unit)? = null,
+    onClickWrite: (() -> Unit)? = null,
 ) {
    Scaffold(
        topBar = { TopBanner(text = "Scan a Vital Bracelet") }
@ -111,12 +200,14 @@ private fun ChooseConnectOption(
        ) {
            ScanButton(
                text = "Vital Bracelet to App",
-                onClick = onClickRead,
+                disabled = onClickRead == null,
+                onClick = onClickRead?: {  },
            )
            Spacer(modifier = Modifier.height(16.dp))
            ScanButton(
                text = "App to Vital Bracelet",
-                onClick = {}
+                disabled = onClickWrite == null,
+                onClick = onClickWrite?: {  },
            )
        }
    }
@ -127,11 +218,13 @@ private fun ChooseConnectOption(
 fun ScanButton(
    text: String,
    onClick: () -> Unit,
-    modifier: Modifier = Modifier
+    modifier: Modifier = Modifier,
+    disabled: Boolean = false,
 ) {
    Button(
        onClick = onClick,
-        modifier = modifier
+        modifier = modifier,
+        enabled = !disabled,
    ) {
        Text(
            text = text,
@ -157,7 +250,10 @@ fun ScanScreenPreview() {

            }
            override fun onClickRead(secrets: Secrets, onComplete: ()->Unit) {}
+            override fun onClickCheckCard(secrets: Secrets, nfcCharacter: NfcCharacter, onComplete: () -> Unit) {}
+            override fun onClickWrite(secrets: Secrets, nfcCharacter: NfcCharacter, onComplete: () -> Unit) {}
            override fun cancelRead() {}
-        }
+        },
+        characterId = null
    )
 }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreenController.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreenController.kt
@ -1,5 +1,6 @@
 package com.github.nacabaro.vbhelper.screens.scanScreen

+import com.github.cfogrady.vbnfc.data.NfcCharacter
 import com.github.nacabaro.vbhelper.ActivityLifecycleListener
 import com.github.nacabaro.vbhelper.source.proto.Secrets
 import kotlinx.coroutines.flow.Flow
@ -7,6 +8,9 @@ import kotlinx.coroutines.flow.Flow
 interface ScanScreenController {
    val secretsFlow: Flow<Secrets>
    fun onClickRead(secrets: Secrets, onComplete: ()->Unit)
+    fun onClickCheckCard(secrets: Secrets, nfcCharacter: NfcCharacter, onComplete: () -> Unit)
+    fun onClickWrite(secrets: Secrets, nfcCharacter: NfcCharacter, onComplete: () -> Unit)
+
    fun cancelRead()

    fun registerActivityLifecycleListener(key: String, activityLifecycleListener: ActivityLifecycleListener)
--- a/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreenControllerImpl.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/screens/scanScreen/ScanScreenControllerImpl.kt
@ -109,6 +109,30 @@ class ScanScreenControllerImpl(
        }
    }

+    override fun onClickWrite(
+        secrets: Secrets,
+        nfcCharacter: NfcCharacter,
+        onComplete: () -> Unit
+    ) {
+        handleTag(secrets) { tagCommunicator ->
+            tagCommunicator.sendCharacter(nfcCharacter)
+            onComplete.invoke()
+            "Sent character successfully!"
+        }
+    }
+
+    override fun onClickCheckCard(
+        secrets: Secrets,
+        nfcCharacter: NfcCharacter,
+        onComplete: () -> Unit
+    ) {
+        handleTag(secrets) { tagCommunicator ->
+            tagCommunicator.prepareDIMForCharacter(nfcCharacter.dimId)
+            onComplete.invoke()
+            "Sent DIM successfully!"
+        }
+    }
+
    // EXTRACTED DIRECTLY FROM EXAMPLE APP
    private fun showWirelessSettings() {
        Toast.makeText(context, "NFC must be enabled", Toast.LENGTH_SHORT).show()
--- a/app/src/main/java/com/github/nacabaro/vbhelper/source/StorageRepository.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/source/StorageRepository.kt
@ -1,6 +1,8 @@
 package com.github.nacabaro.vbhelper.source

 import com.github.nacabaro.vbhelper.database.AppDatabase
+import com.github.nacabaro.vbhelper.domain.device_data.BECharacterData
+import com.github.nacabaro.vbhelper.domain.device_data.TransformationHistory
 import com.github.nacabaro.vbhelper.domain.device_data.UserCharacter
 import com.github.nacabaro.vbhelper.dtos.CharacterDtos

@ -14,4 +16,16 @@ class StorageRepository (
    suspend fun getSingleCharacter(id: Long): UserCharacter {
        return db.userCharacterDao().getCharacter(id)
    }
+
+    suspend fun getCharacterBeData(id: Long): BECharacterData {
+        return db.userCharacterDao().getBeData(id)
+    }
+
+    fun getTransformationHistory(characterId: Long): List<TransformationHistory> {
+        return db.userCharacterDao().getTransformationHistory(characterId)
+    }
+
+    suspend fun getCharacterData(id: Long): CharacterDtos.DiMInfo {
+        return db.characterDao().getCharacterInfo(id)
+    }
 }
--- a/app/src/main/java/com/github/nacabaro/vbhelper/utils/CharacterToNFCCharacter.kt
+++ b/app/src/main/java/com/github/nacabaro/vbhelper/utils/CharacterToNFCCharacter.kt
@ -0,0 +1,86 @@
+package com.github.nacabaro.vbhelper.utils
+
+import android.content.Context
+import com.github.cfogrady.vbnfc.be.BENfcCharacter
+import com.github.cfogrady.vbnfc.be.FirmwareVersion
+import com.github.cfogrady.vbnfc.data.NfcCharacter
+import com.github.nacabaro.vbhelper.di.VBHelper
+import com.github.nacabaro.vbhelper.domain.DeviceType
+import com.github.nacabaro.vbhelper.source.StorageRepository
+
+suspend fun characterToNfc(context: Context, characterId: Long): NfcCharacter? {
+    val app = context.applicationContext as VBHelper
+    val database = app.container.db
+    val storageRepository = StorageRepository(database)
+    val userCharacter = storageRepository.getSingleCharacter(characterId)
+    val characterInfo = storageRepository.getCharacterData(characterId)
+
+    if (userCharacter.characterType == DeviceType.BEDevice) {
+        val beData = storageRepository.getCharacterBeData(characterId)
+        val transformationHistory = storageRepository
+            .getTransformationHistory(characterId)
+            .map {
+                NfcCharacter.Transformation(
+                    toCharIndex = it.toCharIndex.toUByte(),
+                    year = it.year.toUShort(),
+                    month = it.month.toUByte(),
+                    day = it.day.toUByte()
+                )
+            }.toTypedArray()
+
+        // Maybe this is the issue?
+        val dummyVitalHistory = arrayOf<NfcCharacter.DailyVitals>()
+
+        val nfcData = BENfcCharacter(
+            dimId = characterInfo.cardId.toUShort(),
+            charIndex = characterInfo.charId.toUShort(),
+            stage = userCharacter.stage.toByte(),
+            attribute = userCharacter.attribute,
+            ageInDays = userCharacter.ageInDays.toByte(),
+            nextAdventureMissionStage = userCharacter.nextAdventureMissionStage.toByte(),
+            mood = userCharacter.mood.toByte(),
+            vitalPoints = userCharacter.vitalPoints.toUShort(),
+            itemEffectMentalStateValue = beData.itemEffectMentalStateValue.toByte(),
+            itemEffectMentalStateMinutesRemaining = beData.itemEffectMentalStateMinutesRemaining.toByte(),
+            itemEffectActivityLevelValue = beData.itemEffectActivityLevelValue.toByte(),
+            itemEffectActivityLevelMinutesRemaining = beData.itemEffectActivityLevelMinutesRemaining.toByte(),
+            itemEffectVitalPointsChangeValue = beData.itemEffectVitalPointsChangeValue.toByte(),
+            itemEffectVitalPointsChangeMinutesRemaining = beData.itemEffectVitalPointsChangeMinutesRemaining.toByte(),
+            transformationCountdownInMinutes = userCharacter.transformationCountdown.toUShort(),
+            injuryStatus = userCharacter.injuryStatus,
+            trainingPp = userCharacter.trophies.toUShort(),
+            currentPhaseBattlesWon = userCharacter.currentPhaseBattlesWon.toUShort(),
+            currentPhaseBattlesLost = userCharacter.currentPhaseBattlesLost.toUShort(),
+            totalBattlesWon = userCharacter.totalBattlesWon.toUShort(),
+            totalBattlesLost = userCharacter.totalBattlesLost.toUShort(),
+            activityLevel = userCharacter.activityLevel.toByte(),
+            heartRateCurrent = userCharacter.heartRateCurrent.toUByte(),
+            transformationHistory = transformationHistory,
+            vitalHistory = arrayOf(),
+            appReserved1 = byteArrayOf(),
+            appReserved2 = Array(2, { 0u }),
+            trainingHp = beData.trainingHp.toUShort(),
+            trainingAp = beData.trainingAp.toUShort(),
+            trainingBp = beData.trainingBp.toUShort(),
+            remainingTrainingTimeInMinutes = beData.remainingTrainingTimeInMinutes.toUShort(),
+            abilityRarity = beData.abilityRarity,
+            abilityType = beData.abilityType.toUShort(),
+            abilityBranch = beData.abilityBranch.toUShort(),
+            abilityReset = beData.abilityReset.toByte(),
+            rank = beData.rank.toByte(),
+            itemType = beData.itemType.toByte(),
+            itemMultiplier = beData.itemMultiplier.toByte(),
+            itemRemainingTime = beData.itemRemainingTime.toByte(),
+            otp0 = byteArrayOf(8),
+            otp1 = byteArrayOf(8),
+            characterCreationFirmwareVersion = FirmwareVersion(
+                minorVersion = beData.minorVersion.toByte(),
+                majorVersion = beData.majorVersion.toByte()
+            )
+        )
+
+        return nfcData
+    }
+
+    return null
+}