Archiving sync fix

app/src/main/java/net/helcel/cowspent/android/bill_edit/EditBillActivity.kt

@@ -12,6 +12,7 @@ import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.runtime.remember
 import androidx.lifecycle.lifecycleScope
+import androidx.preference.PreferenceManager
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -151,12 +152,25 @@ class EditBillActivity : AppCompatActivity() {
                 val billIdToDuplicate = intent.getLongExtra(PARAM_BILL_ID_TO_DUPLICATE, 0)
                 val timeNowSeconds = System.currentTimeMillis() / 1000
                 if (billIdToDuplicate == 0L) {
-                    val project = db.getProject(projectId)
-                    bill = DBBill(
-                        0, 0, projectId, project?.lastPayerId ?: 0, 0.0, timeNowSeconds,
-                        "", DBBill.STATE_ADDED, DBBill.NON_REPEATED,
-                        DBBill.PAYMODE_NONE, DBBill.CATEGORY_NONE, "", DBBill.PAYMODE_ID_NONE
-                    )
+                    val preferences = PreferenceManager.getDefaultSharedPreferences(applicationContext)
+                    val fillFromLast = preferences.getBoolean(getString(R.string.pref_key_fill_new_bill_from_last), false)
+                    val lastBill = if (fillFromLast) db.getLastBillOfProject(projectId) else null
+
+                    if (lastBill != null) {
+                        bill = DBBill(
+                            0, 0, projectId, lastBill.payerId, 0.0, timeNowSeconds,
+                            "", DBBill.STATE_ADDED, lastBill.repeat ?: DBBill.NON_REPEATED,
+                            lastBill.paymentMode, lastBill.categoryId, "", lastBill.paymentModeId
+                        )
+                        bill.billOwers = lastBill.billOwers.map { DBBillOwer(0, 0, it.memberId) }
+                    } else {
+                        val project = db.getProject(projectId)
+                        bill = DBBill(
+                            0, 0, projectId, project?.lastPayerId ?: 0, 0.0, timeNowSeconds,
+                            "", DBBill.STATE_ADDED, DBBill.NON_REPEATED,
+                            DBBill.PAYMODE_NONE, DBBill.CATEGORY_NONE, "", DBBill.PAYMODE_ID_NONE
+                        )
+                    }
                 } else {
                     val btd = db.getBill(billIdToDuplicate)!!
                     bill = DBBill(
@@ -333,7 +347,7 @@ class EditBillActivity : AppCompatActivity() {
                     viewModel.owersSelection[id] == true && viewModel.parseAmountFromUi(amountStr) > 0
                 }.mapValues {
                     val uiAmount = viewModel.parseAmountFromUi(it.value)
-                    SupportUtil.round2(uiAmount / viewModel.selectedCurrencyRate)
+                    SupportUtil.round2(uiAmount * viewModel.selectedCurrencyRate)
                 }
             } else { // PERCENT
                 val totalAmount = viewModel.amountAsDouble
@@ -342,7 +356,7 @@ class EditBillActivity : AppCompatActivity() {
                 }.mapValues {
                     val percent = viewModel.parseAmountFromUi(it.value)
                     val uiAmount = SupportUtil.round2(totalAmount * percent / 100.0)
-                    SupportUtil.round2(uiAmount / viewModel.selectedCurrencyRate)
+                    SupportUtil.round2(uiAmount * viewModel.selectedCurrencyRate)
                 }
             }
 

app/src/main/java/net/helcel/cowspent/android/bill_edit/EditBillScreen.kt

@@ -450,7 +450,10 @@ fun OwerSelectionSection(
                 size = 32.dp
             )
             Spacer(modifier = Modifier.width(8.dp))
-            Text(member.name, modifier = Modifier.weight(1f))
+            val weightSuffix = if (viewModel.hasDifferentWeights && member.weight != 1.0) {
+                " (x${member.weight.toString().removeSuffix(".0")})"
+            } else ""
+            Text("${member.name}$weightSuffix", modifier = Modifier.weight(1f))
 
             if (isSelected || viewModel.splitMode != SplitMode.EVEN) {
                 val focusManager = LocalFocusManager.current
@@ -671,19 +674,115 @@ fun BillAdditionalDetailsSection(
 }
 
 @SuppressLint("ViewModelConstructorInComposable")
-@Preview(showBackground = true)
+@Preview(showBackground = true, name = "Standard Split")
 @Composable
 fun EditBillScreenPreview() {
     MaterialTheme {
         EditBillScreen(
             viewModel = EditBillViewModel().apply {
                 what = "Pizza"
-                amount = "12.50"
+                amount = "12.00"
                 mainCurrencyName = "EUR"
                 members = listOf(
                     DBMember(1, 0, 0, "Alice", true, 1.0, 0, null, null, null, null, null),
                     DBMember(2, 0, 0, "Bob", true, 1.0, 0, null, null, null, null, null)
                 )
+                owersSelection[1] = true
+                owersSelection[2] = true
+                updateSplits()
+            },
+            categories = emptyList(),
+            paymentModes = emptyList(),
+            onSave = {},
+            onBack = {},
+            onDateClick = {},
+            onTimeClick = {},
+            onScan = {}
+        )
+    }
+}
+
+@SuppressLint("ViewModelConstructorInComposable")
+@Preview(showBackground = true, name = "Weighted Split")
+@Composable
+fun EditBillScreenWeightedPreview() {
+    MaterialTheme {
+        EditBillScreen(
+            viewModel = EditBillViewModel().apply {
+                what = "Weighted Pizza"
+                amount = "60.00"
+                mainCurrencyName = "EUR"
+                members = listOf(
+                    DBMember(1, 0, 0, "Alice", true, 2.0, 0, null, null, null, null, null),
+                    DBMember(2, 0, 0, "Bob", true, 1.0, 0, null, null, null, null, null),
+                    DBMember(3, 0, 0, "Charlie", true, 1.0, 0, null, null, null, null, null)
+                )
+                owersSelection[1] = true
+                owersSelection[2] = true
+                owersSelection[3] = true
+                updateSplits()
+            },
+            categories = emptyList(),
+            paymentModes = emptyList(),
+            onSave = {},
+            onBack = {},
+            onDateClick = {},
+            onTimeClick = {},
+            onScan = {}
+        )
+    }
+}
+
+@SuppressLint("ViewModelConstructorInComposable")
+@Preview(showBackground = true, name = "Custom Split (#)")
+@Composable
+fun EditBillScreenCustomPreview() {
+    MaterialTheme {
+        EditBillScreen(
+            viewModel = EditBillViewModel().apply {
+                what = "Custom Split Pizza"
+                amount = "60.00"
+                mainCurrencyName = "EUR"
+                members = listOf(
+                    DBMember(1, 0, 0, "Alice", true, 1.0, 0, null, null, null, null, null),
+                    DBMember(2, 0, 0, "Bob", true, 1.0, 0, null, null, null, null, null)
+                )
+                splitMode = SplitMode.CUSTOM
+                owersSelection[1] = true
+                owersSelection[2] = true
+                owersCustomSplit[1] = "40.00"
+                owersCustomSplit[2] = "20.00"
+            },
+            categories = emptyList(),
+            paymentModes = emptyList(),
+            onSave = {},
+            onBack = {},
+            onDateClick = {},
+            onTimeClick = {},
+            onScan = {}
+        )
+    }
+}
+
+@SuppressLint("ViewModelConstructorInComposable")
+@Preview(showBackground = true, name = "Percent Split (%)")
+@Composable
+fun EditBillScreenPercentPreview() {
+    MaterialTheme {
+        EditBillScreen(
+            viewModel = EditBillViewModel().apply {
+                what = "Percent Split Pizza"
+                amount = "100.00"
+                mainCurrencyName = "EUR"
+                members = listOf(
+                    DBMember(1, 0, 0, "Alice", true, 1.0, 0, null, null, null, null, null),
+                    DBMember(2, 0, 0, "Bob", true, 1.0, 0, null, null, null, null, null)
+                )
+                splitMode = SplitMode.PERCENT
+                owersSelection[1] = true
+                owersSelection[2] = true
+                owersPercentSplit[1] = "70"
+                owersPercentSplit[2] = "30"
             },
             categories = emptyList(),
             paymentModes = emptyList(),

app/src/main/java/net/helcel/cowspent/android/bill_edit/EditBillViewModel.kt

@@ -61,18 +61,18 @@ class EditBillViewModel : ViewModel() {
     val amountAsDouble: Double
         get() = parseAmountFromUi(amount)
 
-    fun getEvenSplit(): Double {
-        val selectedOwersCount = owersSelection.count { it.value }
-        return if (selectedOwersCount > 0) SupportUtil.round2(amountAsDouble / selectedOwersCount) else 0.0
-    }
+    val hasDifferentWeights: Boolean
+        get() = members.isNotEmpty() && members.any { it.weight != members[0].weight }
 
     fun updateSplits() {
         if (splitMode == SplitMode.EVEN) {
-            val even = getEvenSplit()
-            val evenStr = if (even == 0.0) "" else SupportUtil.round2(even).toString()
+            val selectedMembers = members.filter { owersSelection[it.id] == true }
+            val totalWeight = selectedMembers.sumOf { it.weight }
+            val uiAmount = amountAsDouble
             members.forEach { m ->
                 if (owersSelection[m.id] == true) {
-                    owersCustomSplit[m.id] = evenStr
+                    val share = if (totalWeight > 0) (uiAmount * m.weight) / totalWeight else 0.0
+                    owersCustomSplit[m.id] = if (share == 0.0) "" else SupportUtil.round2(share).toString()
                 } else {
                     owersCustomSplit.remove(m.id)
                 }
@@ -180,7 +180,7 @@ class EditBillViewModel : ViewModel() {
     }
 
     fun getFinalAmount(): Double {
-        return SupportUtil.round2(amountAsDouble / selectedCurrencyRate)
+        return SupportUtil.round2(amountAsDouble * selectedCurrencyRate)
     }
 
     fun getFinalComment(): String {
@@ -252,10 +252,9 @@ class EditBillViewModel : ViewModel() {
                 if (selected) {
                     // If we have metadata, the custom splits from DB are also converted. 
                     // We should show them as "Original" if possible? 
-                    // Actually, if we use metadata, we should probably store original splits too, 
-                    // but for now let's just reverse the rate for display.
+                    // Reverse calculation for display: UI Part = DB Part / Rate
                     val dbPart = customSplits[member.id]!!
-                    val uiPart = if (selectedCurrencyRate != 1.0) dbPart * selectedCurrencyRate else dbPart
+                    val uiPart = if (selectedCurrencyRate != 0.0) dbPart / selectedCurrencyRate else dbPart
                     owersCustomSplit[member.id] = SupportUtil.round2(uiPart).toString()
                 }
             }
@@ -263,18 +262,18 @@ class EditBillViewModel : ViewModel() {
             // Even split logic
             splitMode = SplitMode.EVEN
             val billOwerIds = bill.billOwersIds
-            val selectedCount = billOwerIds.size
+            val selectedMembers = members.filter { billOwerIds.contains(it.id) }
+            val totalWeight = selectedMembers.sumOf { it.weight }
             
             // Use UI amount for even split calculation
             val uiAmount = amountAsDouble
-            val evenSplit = if (selectedCount > 0) uiAmount / selectedCount else 0.0
-            val evenSplitStr = if (evenSplit == 0.0) "" else SupportUtil.round2(evenSplit).toString()
 
             for (member in members) {
                 val selected = billOwerIds.contains(member.id)
                 owersSelection[member.id] = selected
                 if (selected) {
-                    owersCustomSplit[member.id] = evenSplitStr
+                    val share = if (totalWeight > 0) (uiAmount * member.weight) / totalWeight else 0.0
+                    owersCustomSplit[member.id] = if (share == 0.0) "" else SupportUtil.round2(share).toString()
                 }
             }
         }

app/src/main/java/net/helcel/cowspent/android/currencies/ManageCurrenciesActivity.kt

@@ -114,7 +114,8 @@ class ManageCurrenciesActivity : AppCompatActivity() {
     }
 
     private fun addOrUpdateCurrency() {
-        val exchangeRate = try { viewModel.newCurrencyRate.toDouble() } catch (_: Exception) { 0.0 }
+        val uiRate = try { viewModel.newCurrencyRate.toDouble() } catch (_: Exception) { 0.0 }
+        val exchangeRate = if (uiRate != 0.0) 1.0 / uiRate else 0.0
         val currencyName = viewModel.newCurrencyName
         val editingId = viewModel.editingCurrencyId
 
@@ -142,7 +143,8 @@ class ManageCurrenciesActivity : AppCompatActivity() {
     private fun startEditing(currency: DBCurrency) {
         viewModel.editingCurrencyId = currency.id
         viewModel.newCurrencyName = currency.name ?: ""
-        viewModel.newCurrencyRate = currency.exchangeRate.toString()
+        val uiRate = if (currency.exchangeRate != 0.0) 1.0 / currency.exchangeRate else 0.0
+        viewModel.newCurrencyRate = uiRate.toString()
     }
 
     private fun cancelEditing() {

app/src/main/java/net/helcel/cowspent/android/currencies/ManageCurrenciesScreen.kt

@@ -304,7 +304,7 @@ fun CurrencyRow(
                     modifier = Modifier.padding(horizontal = 8.dp)
                 )
                 Text(
-                    text = formatAmount(currency.exchangeRate),
+                    text = formatAmount(if (currency.exchangeRate != 0.0) 1.0 / currency.exchangeRate else 0.0),
                     style = MaterialTheme.typography.body1,
                     fontWeight = FontWeight.ExtraBold,
                     color = if (isEditing) MaterialTheme.colors.secondary else MaterialTheme.colors.onSurface

app/src/main/java/net/helcel/cowspent/android/main/BillsListViewActivity.kt

@@ -761,7 +761,7 @@ class BillsListViewActivity :
                     val proj = withContext(Dispatchers.IO) { db.getProject(selectedProjectId) }
                     if (proj != null && !proj.isLocal) {
                         db.cowspentServerSyncHelper.addCallbackPull(syncCallBack)
-                        db.cowspentServerSyncHelper.scheduleSync(false, selectedProjectId)
+                        db.cowspentServerSyncHelper.scheduleSync(false, selectedProjectId, manual)
                     } else viewModel.isRefreshing = false
                 }
             } else viewModel.isRefreshing = false

app/src/main/java/net/helcel/cowspent/android/settings/SettingsScreen.kt

@@ -54,6 +54,7 @@ import androidx.preference.PreferenceManager
 import net.helcel.cowspent.R
 import net.helcel.cowspent.android.helper.ColorPicker
 import net.helcel.cowspent.persistence.CowspentSQLiteOpenHelper
+import net.helcel.cowspent.persistence.CowspentServerSyncHelper
 import net.helcel.cowspent.util.ColorUtils
 import net.helcel.cowspent.util.Cowspent
 
@@ -80,22 +81,28 @@ fun SettingsScreen(
     val keyOfflineMode = stringResource(R.string.pref_key_offline_mode)
     val keyShowArchived = stringResource(R.string.pref_key_show_archived)
     val keyBetaFeatures = stringResource(R.string.pref_key_beta_features)
+    val keyFillNewBillFromLast = stringResource(R.string.pref_key_fill_new_bill_from_last)
+
+    val isNextcloudConfigured = CowspentServerSyncHelper.isNextcloudAccountConfigured(context)
 
     // States for preferences
     var nightMode by remember(keyNightMode) {
         mutableStateOf(sharedPreferences.getString(keyNightMode, "-1") ?: "-1")
     }
 
-    var colorMode by remember(keyColorMode, keyUseServerColor, keyUseSystemColor) {
-        mutableStateOf(sharedPreferences.getString(keyColorMode, null) ?: run {
-            val useServer = sharedPreferences.getBoolean(keyUseServerColor, true)
+    var colorMode by remember(keyColorMode, keyUseServerColor, keyUseSystemColor, isNextcloudConfigured) {
+        val savedMode = sharedPreferences.getString(keyColorMode, null)
+        val mode = savedMode ?: run {
+            val useServer = sharedPreferences.getBoolean(keyUseServerColor, false)
             val useSystem = sharedPreferences.getBoolean(keyUseSystemColor, true)
             when {
-                useServer -> "server"
+                useServer && isNextcloudConfigured -> "server"
                 useSystem -> "system"
                 else -> "manual"
             }
-        })
+        }
+        // Fallback to system if server is selected but not configured
+        mutableStateOf(if (mode == "server" && !isNextcloudConfigured) "system" else mode)
     }
 
     // Apply theme globally only when leaving settings to avoid flickering/restarts during selection
@@ -117,6 +124,9 @@ fun SettingsScreen(
     var betaFeatures by remember(keyBetaFeatures) {
         mutableStateOf(sharedPreferences.getBoolean(keyBetaFeatures, false))
     }
+    var fillNewBillFromLast by remember(keyFillNewBillFromLast) {
+        mutableStateOf(sharedPreferences.getBoolean(keyFillNewBillFromLast, false))
+    }
 
     Scaffold(
         topBar = {
@@ -181,15 +191,19 @@ fun SettingsScreen(
                 }
             )
 
+            val colorModeEntries = buildMap {
+                put("system", stringResource(R.string.pref_value_color_system))
+                if (isNextcloudConfigured) {
+                    put("server", stringResource(R.string.pref_value_color_server))
+                }
+                put("manual", stringResource(R.string.pref_value_color_manual))
+            }
+
             SettingsListPreference(
                 title = stringResource(R.string.settings_color_mode),
                 icon = Icons.Default.Palette,
                 value = colorMode,
-                entries = mapOf(
-                    "system" to stringResource(R.string.pref_value_color_system),
-                    "server" to stringResource(R.string.pref_value_color_server),
-                    "manual" to stringResource(R.string.pref_value_color_manual)
-                ),
+                entries = colorModeEntries,
                 onValueChange = { mode ->
                     colorMode = mode
                     sharedPreferences.edit {
@@ -259,6 +273,21 @@ fun SettingsScreen(
                 }
             )
 
+            if (betaFeatures) {
+                SettingsSwitchPreference(
+                    title = stringResource(R.string.settings_fill_new_bill_from_last),
+                    summary = stringResource(R.string.settings_fill_new_bill_from_last_summary),
+                    icon = Icons.Default.Info,
+                    checked = fillNewBillFromLast,
+                    onCheckedChange = {
+                        fillNewBillFromLast = it
+                        sharedPreferences.edit {
+                            putBoolean(keyFillNewBillFromLast, it)
+                        }
+                    }
+                )
+            }
+
             SettingsPreference(
                 title = stringResource(R.string.title_about),
                 icon = Icons.Default.Info,

app/src/main/java/net/helcel/cowspent/persistence/CowspentSQLiteOpenHelper.kt

@@ -557,6 +557,15 @@ class CowspentSQLiteOpenHelper private constructor(val context: Context) :
         return if (bills.isEmpty()) null else bills[0]
     }
 
+    fun getLastBillOfProject(projectId: Long): DBBill? {
+        val list = getBillsCustom(
+            "$key_projectid = ? AND $key_state != ?",
+            arrayOf(projectId.toString(), DBBill.STATE_DELETED.toString()),
+            "$key_id DESC LIMIT 1"
+        )
+        return if (list.isEmpty()) null else list[0]
+    }
+
     @WorkerThread
     fun searchBills(query: CharSequence?, projectId: Long): List<DBBill> {
         val andWhere: MutableList<String> = ArrayList()

app/src/main/java/net/helcel/cowspent/persistence/CowspentServerSyncHelper.kt

@@ -93,14 +93,14 @@ class CowspentServerSyncHelper private constructor(private val dbHelper: Cowspen
         callbacksPull.add(callback)
     }
 
-    fun scheduleSync(onlyLocalChanges: Boolean, projId: Long): SyncTask? {
-        Log.d(TAG, "Sync requested (${if (onlyLocalChanges) "onlyLocalChanges" else "full"}; ${if (syncActive) "sync active" else "sync NOT active"}) ...")
+    fun scheduleSync(onlyLocalChanges: Boolean, projId: Long, forceFullSync: Boolean = false): SyncTask? {
+        Log.d(TAG, "Sync requested (${if (onlyLocalChanges) "onlyLocalChanges" else "full"}; ${if (syncActive) "sync active" else "sync NOT active"}; forceFullSync=$forceFullSync) ...")
         updateNetworkStatus()
         if (isSyncPossible && (!syncActive || onlyLocalChanges)) {
             val project = dbHelper.getProject(projId)
             if (project != null) {
                 Log.d(TAG, "... starting now")
-                val syncTask = SyncTask(onlyLocalChanges, project)
+                val syncTask = SyncTask(onlyLocalChanges, project, forceFullSync)
                 syncTask.addCallbacks(callbacksPush)
                 callbacksPush = ArrayList()
                 if (!onlyLocalChanges) {
@@ -138,7 +138,7 @@ class CowspentServerSyncHelper private constructor(private val dbHelper: Cowspen
         }
     }
 
-    inner class SyncTask(private val onlyLocalChanges: Boolean, private val project: DBProject) {
+    inner class SyncTask(private val onlyLocalChanges: Boolean, private val project: DBProject, private val forceFullSync: Boolean = false) {
         private val callbacks: MutableList<ICallback> = ArrayList()
         private var nextcloudClient: NextcloudClient? = null
         private var client: VersatileProjectSyncClient? = null
@@ -726,23 +726,59 @@ class CowspentServerSyncHelper private constructor(private val dbHelper: Cowspen
                 val paymentModesRemoteIdToId = dbPaymentModes.associate { it.remoteId to it.id }.toMutableMap()
                 dbPaymentModes.filter { it.remoteId < 0 }.forEach { paymentModesRemoteIdToId[it.remoteId] = it.id }
 
-                val billsResponse = client!!.getBills(project)
                 val isIHM = project.type == ProjectType.IHATEMONEY
-                val serverSyncTimestamp = if (isIHM) 0L else billsResponse.syncTimestamp
-                val remoteBills: List<DBBill> = if (isIHM) {
-                    billsResponse.getBillsIHM(project.id, memberRemoteIdToId, categoriesRemoteIdToId, paymentModesRemoteIdToId)
+                var serverSyncTimestamp = project.lastSyncedTimestamp
+                val remoteBills = mutableListOf<DBBill>()
+                val remoteAllBillIds = mutableListOf<Long>()
+
+                val localBills = dbHelper.getBillsOfProject(project.id)
+                val localBillsByRemoteId = localBills.associateBy { it.remoteId }
+
+                if (project.type == ProjectType.COSPEND && !forceFullSync && localBills.isNotEmpty()) {
+                    Log.d(TAG, "Starting partial sync for project ${project.remoteId}")
+                    var offset = 0
+                    val limit = 50
+                    var allMatched = false
+                    while (!allMatched) {
+                        val partialResponse = client!!.getBills(project, offset, limit, true, 0)
+                        val partialRemoteBills = partialResponse.getBillsCospend(project.id, memberRemoteIdToId, categoriesRemoteIdToId, paymentModesRemoteIdToId)
+                        if (partialRemoteBills.isEmpty()) break
+
+                        remoteBills.addAll(partialRemoteBills)
+
+                        var frameMatched = true
+                        for (rb in partialRemoteBills) {
+                            val lb = localBillsByRemoteId[rb.remoteId]
+                            if (lb == null || hasChanged(lb, rb)) {
+                                frameMatched = false
+                                break
+                            }
+                        }
+
+                        if (offset == 0 && partialResponse.syncTimestamp > 0) {
+                            serverSyncTimestamp = partialResponse.syncTimestamp
+                        }
+
+                        if (frameMatched) {
+                            allMatched = true
+                        } else {
+                            offset += limit
+                        }
+                    }
                 } else {
-                    billsResponse.getBillsCospend(project.id, memberRemoteIdToId, categoriesRemoteIdToId, paymentModesRemoteIdToId)
-                }
-                val remoteAllBillIds: List<Long> = if (isIHM) {
-                    remoteBills.map { it.remoteId }
-                } else {
-                    billsResponse.allBillIds
+                    Log.d(TAG, "Starting full sync for project ${project.remoteId}")
+                    val billsResponse = client!!.getBills(project)
+                    serverSyncTimestamp = if (isIHM) 0L else billsResponse.syncTimestamp
+                    if (isIHM) {
+                        remoteBills.addAll(billsResponse.getBillsIHM(project.id, memberRemoteIdToId, categoriesRemoteIdToId, paymentModesRemoteIdToId))
+                        remoteAllBillIds.addAll(remoteBills.map { it.remoteId })
+                    } else {
+                        remoteBills.addAll(billsResponse.getBillsCospend(project.id, memberRemoteIdToId, categoriesRemoteIdToId, paymentModesRemoteIdToId))
+                        remoteAllBillIds.addAll(billsResponse.allBillIds)
+                    }
                 }
 
                 val remoteBillsByRemoteId = remoteBills.associateBy { it.remoteId }
-                val localBills = dbHelper.getBillsOfProject(project.id)
-                val localBillsByRemoteId = localBills.associateBy { it.remoteId }
 
                 for (remoteBill in remoteBills) {
                     if (!localBillsByRemoteId.containsKey(remoteBill.remoteId)) {
@@ -783,7 +819,7 @@ class CowspentServerSyncHelper private constructor(private val dbHelper: Cowspen
                     }
                 }
 
-                if (project.type == ProjectType.COSPEND || project.type == ProjectType.IHATEMONEY) {
+                if (remoteAllBillIds.isNotEmpty() && (project.type == ProjectType.COSPEND || project.type == ProjectType.IHATEMONEY)) {
                     for (localBill in localBills) {
                         if (!remoteAllBillIds.contains(localBill.remoteId)) {
                             dbHelper.deleteBill(localBill.id)
@@ -792,7 +828,7 @@ class CowspentServerSyncHelper private constructor(private val dbHelper: Cowspen
                             Log.d(TAG, "Delete local bill : $localBill")
                         }
                     }
-                } else {
+                } else if (remoteAllBillIds.isNotEmpty()) {
                     for (localBill in localBills) {
                         if (!remoteBillsByRemoteId.containsKey(localBill.remoteId)) {
                             dbHelper.deleteBill(localBill.id)

app/src/main/java/net/helcel/cowspent/util/ColorUtils.kt

@@ -24,7 +24,7 @@ object ColorUtils {
         val colorMode = if (prefs.contains(modeKey)) {
             prefs.getString(modeKey, "system")
         } else {
-            val useServer = prefs.getBoolean(context.getString(R.string.pref_key_use_server_color), true)
+            val useServer = prefs.getBoolean(context.getString(R.string.pref_key_use_server_color), false)
             val useSystem = prefs.getBoolean(context.getString(R.string.pref_key_use_system_color), true)
             when {
                 useServer -> "server"

app/src/main/java/net/helcel/cowspent/util/VersatileProjectSyncClient.kt

@@ -158,10 +158,18 @@ class VersatileProjectSyncClient(
                     paramKeys.add("password")
                     paramValues.add(newPassword)
                 }
+                if (newEmail != null) {
+                    paramKeys.add("contact_email")
+                    paramValues.add(newEmail)
+                }
                 if (newMainCurrencyName != null) {
                     paramKeys.add("currencyName")
                     paramValues.add(newMainCurrencyName)
                 }
+                if (newArchivedTs != null) {
+                    paramKeys.add("archived_ts")
+                    paramValues.add(newArchivedTs.toString())
+                }
             }
             if (canAccessProjectWithNCLogin(project)) {
                 username = this.username
@@ -679,22 +687,66 @@ class VersatileProjectSyncClient(
     }
 
     @Throws(JSONException::class, IOException::class, TokenMismatchException::class, NextcloudHttpRequestFailedException::class)
-    fun getBills(project: DBProject): ServerResponse.BillsResponse {
+    fun getBills(
+        project: DBProject,
+        offset: Int? = null,
+        limit: Int? = null,
+        reverse: Boolean? = null,
+        deleted: Int? = null
+    ): ServerResponse.BillsResponse {
         var target: String
         var username: String?
         var password: String?
         var bearerToken: String?
         var useOcsApiRequest: Boolean
+
+        val paramKeys: MutableList<String> = ArrayList()
+        val paramValues: MutableList<String> = ArrayList()
+
         if (ProjectType.COSPEND == project.type) {
             val tsLastSync = project.lastSyncedTimestamp
+            if (offset == null) {
+                if (cospendVersionGT161) {
+                    paramKeys.add("lastChanged")
+                } else {
+                    paramKeys.add("lastchanged")
+                }
+                paramValues.add(tsLastSync.toString())
+            } else {
+                paramKeys.add("offset")
+                paramValues.add(offset.toString())
+                if (limit != null) {
+                    paramKeys.add("limit")
+                    paramValues.add(limit.toString())
+                }
+                if (reverse != null) {
+                    paramKeys.add("reverse")
+                    paramValues.add(reverse.toString())
+                }
+                if (deleted != null) {
+                    paramKeys.add("deleted")
+                    paramValues.add(deleted.toString())
+                }
+            }
+
             if (canAccessProjectWithNCLogin(project)) {
                 username = this.username
                 password = this.password
-                target = if (cospendVersionGT161)
-                    project.getRequestBaseUrl(true) + "/api/v1/projects/" + project.remoteId + "/bills?lastChanged=" + tsLastSync
-                else
-                    project.getRequestBaseUrl(false) + "/api-priv/projects/" + project.remoteId + "/bills?lastchanged=" + tsLastSync
                 useOcsApiRequest = cospendVersionGT161
+                val baseUrl = project.getRequestBaseUrl(useOcsApiRequest)
+                target = if (useOcsApiRequest)
+                    "$baseUrl/api/v1/projects/${project.remoteId}/bills"
+                else
+                    "$baseUrl/api-priv/projects/${project.remoteId}/bills"
+
+                if (paramKeys.isNotEmpty()) {
+                    target += "?"
+                    for (i in paramKeys.indices) {
+                        if (i > 0) target += "&"
+                        target += "${paramKeys[i]}=${paramValues[i]}"
+                    }
+                }
+
                 return ServerResponse.BillsResponse(
                     requestServer(
                         target, METHOD_GET, null, null,
@@ -703,14 +755,6 @@ class VersatileProjectSyncClient(
                     useOcsApiRequest
                 )
             } else if (canAccessProjectWithSSO(project)) {
-                val paramKeys: MutableList<String> = ArrayList()
-                val paramValues: MutableList<String> = ArrayList()
-                if (cospendVersionGT161) {
-                    paramKeys.add("lastChanged")
-                } else {
-                    paramKeys.add("lastchanged")
-                }
-                paramValues.add(tsLastSync.toString())
                 return if (cospendVersionGT161) {
                     target = "/ocs/v2.php/apps/cospend/api/v1/projects/" + project.remoteId + "/bills"
                     ServerResponse.BillsResponse(requestServerWithSSO(nextcloudAPI!!, target, METHOD_GET, paramKeys, paramValues, true), true)
@@ -720,10 +764,20 @@ class VersatileProjectSyncClient(
                 }
             } else {
                 useOcsApiRequest = cospendVersionGT161
-                target = if (cospendVersionGT161)
-                    project.getRequestBaseUrl(true) + "/api/v1/public/projects/" + project.remoteId + "/" + getEncodedPassword(project.password) + "/bills?lastChanged=" + tsLastSync
+                val baseUrl = project.getRequestBaseUrl(useOcsApiRequest)
+                target = if (useOcsApiRequest)
+                    "$baseUrl/api/v1/public/projects/${project.remoteId}/${getEncodedPassword(project.password)}/bills"
                 else
-                    project.getRequestBaseUrl(false) + "/apiv2/projects/" + project.remoteId + "/" + getEncodedPassword(project.password) + "/bills?lastchanged=" + tsLastSync
+                    "$baseUrl/apiv2/projects/${project.remoteId}/${getEncodedPassword(project.password)}/bills"
+
+                if (paramKeys.isNotEmpty()) {
+                    target += "?"
+                    for (i in paramKeys.indices) {
+                        if (i > 0) target += "&"
+                        target += "${paramKeys[i]}=${paramValues[i]}"
+                    }
+                }
+
                 return ServerResponse.BillsResponse(
                     requestServer(
                          target, METHOD_GET, null, null,

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

@@ -137,6 +137,8 @@
     <string name="settings_show_archived">Show archived projects</string>
     <string name="settings_beta_features">Beta Features</string>
     <string name="settings_beta_features_summary">Enable experimental features. Use at your own risk.</string>
+    <string name="settings_fill_new_bill_from_last">Auto-fill from last bill</string>
+    <string name="settings_fill_new_bill_from_last_summary">Pre-fill payer, category, mode and owers from the last bill created in the project.</string>
     <string name="settings_url_warn_http">WARNING: "http" is unsafe. Use "https".</string>
     <string name="settings_colorpicker_title">Choose Color</string>
 
@@ -158,6 +160,7 @@
     <string name="pref_key_offline_mode" translatable="false">offlineMode</string>
     <string name="pref_key_show_archived" translatable="false">showArchived</string>
     <string name="pref_key_beta_features" translatable="false">betaFeatures</string>
+    <string name="pref_key_fill_new_bill_from_last" translatable="false">fillNewBillFromLast</string>
     <string name="pref_value_night_mode_no" translatable="false">1</string>
     <string name="pref_value_night_mode_yes" translatable="false">2</string>
     <string name="pref_value_night_mode_system" translatable="false">-1</string>