app/build.gradle.kts

@@ -98,4 +98,8 @@ dependencies {
     implementation("com.google.dagger:hilt-android:2.57.1")
     ksp("com.google.dagger:hilt-android-compiler:2.57.1")
     implementation("androidx.hilt:hilt-navigation-compose:1.3.0")
+
+    implementation("io.ktor:ktor-client-core:3.4.1")
+    implementation("io.ktor:ktor-client-okhttp:3.4.1")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json-jvm:1.10.0")
 }

app/src/main/java/cc/n0th1ng/tripmoney/MainActivity.kt

@@ -11,9 +11,11 @@ import androidx.compose.material3.DrawerValue
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.rememberDrawerState
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
+import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.currentBackStackEntryAsState
@@ -28,6 +30,7 @@ import cc.n0th1ng.tripmoney.screens.settings.SettingsScreen
 import cc.n0th1ng.tripmoney.screens.statistics.StatisticsScreen
 import cc.n0th1ng.tripmoney.screens.trippicker.TripPickerScreen
 import cc.n0th1ng.tripmoney.theme.TripMoneyTheme
+import cc.n0th1ng.tripmoney.viewmodel.SettingsViewModel
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.launch
 
@@ -49,6 +52,8 @@ class MainActivity : ComponentActivity() {
 @RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun NavigationDrawer() {
+    val settingsViewModel: SettingsViewModel = hiltViewModel()
+    val currentTripId by settingsViewModel.currentTrip.collectAsState()
     val navController = rememberNavController()
     val navBackStack by navController.currentBackStackEntryAsState()
     val current = navBackStack?.destination?.route
@@ -74,7 +79,7 @@ fun NavigationDrawer() {
             bottomBar = { BottomNavigation(navController) }) { innerPadding ->
             NavHost(
                 navController = navController,
-                startDestination = Screens.TRIP_PICKER,
+                startDestination = if(currentTripId == -1) Screens.TRIP_PICKER else Screens.LIST_EXPENSE,
                 modifier = Modifier.padding(innerPadding)
             ) {
                 composable(Screens.LIST_EXPENSE) {

app/src/main/java/cc/n0th1ng/tripmoney/data/TripDatabase.kt

@@ -8,9 +8,11 @@ import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.sqlite.db.SupportSQLiteDatabase
 import cc.n0th1ng.tripmoney.data.dao.CategoryDao
+import cc.n0th1ng.tripmoney.data.dao.ExchangeRateDao
 import cc.n0th1ng.tripmoney.data.dao.ExpenseDao
 import cc.n0th1ng.tripmoney.data.dao.TripDao
 import cc.n0th1ng.tripmoney.data.entity.Category
+import cc.n0th1ng.tripmoney.data.entity.ExchangeRate
 import cc.n0th1ng.tripmoney.data.entity.Expense
 import cc.n0th1ng.tripmoney.data.entity.Trip
 import cc.n0th1ng.tripmoney.utils.Icons
@@ -26,11 +28,12 @@ import java.time.LocalDateTime
 import javax.inject.Inject
 import javax.inject.Singleton
 
-@Database(entities = [Trip::class, Expense::class, Category::class], version = 1)
+@Database(entities = [Trip::class, Expense::class, Category::class, ExchangeRate::class], version = 1)
 abstract class TripDatabase : RoomDatabase() {
     abstract fun tripDao(): TripDao
     abstract fun expenseDao(): ExpenseDao
     abstract fun categoryDao(): CategoryDao
+    abstract fun exchangeRateDao(): ExchangeRateDao
 }
 
 
@@ -74,6 +77,12 @@ object DatabaseModule {
     fun provideCategoryDao(database: TripDatabase): CategoryDao {
         return database.categoryDao()
     }
+
+    @Provides
+    @Singleton
+    fun provideExchangeRateDao(database: TripDatabase): ExchangeRateDao {
+        return database.exchangeRateDao()
+    }
 }
 
 

app/src/main/java/cc/n0th1ng/tripmoney/data/dao/ExchangeRateDao.kt

@@ -0,0 +1,22 @@
+package cc.n0th1ng.tripmoney.data.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Transaction
+import androidx.room.Upsert
+import cc.n0th1ng.tripmoney.data.entity.Category
+import cc.n0th1ng.tripmoney.data.entity.ExchangeRate
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ExchangeRateDao {
+    @Upsert
+    suspend fun insert(exchangeRate: ExchangeRate)
+
+    @Query("SELECT * FROM exchange_rate WHERE id = :id")
+    suspend fun getById(id: String): ExchangeRate?
+
+    @Query("DELETE FROM exchange_rate WHERE DATE(date) < :cutoffDate")
+    suspend fun deleteOldRates(cutoffDate: String)
+}

app/src/main/java/cc/n0th1ng/tripmoney/data/dao/TripDao.kt

@@ -16,6 +16,7 @@ interface TripDao {
     @Query(
         """
         SELECT * FROM trip
+        ORDER BY DATE(trip.start_date) DESC
     """
     )
     fun tripsPaged(): PagingSource<Int, Trip>

app/src/main/java/cc/n0th1ng/tripmoney/data/entity/ExchangeRate.kt

@@ -0,0 +1,20 @@
+package cc.n0th1ng.tripmoney.data.entity
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity("exchange_rate")
+data class ExchangeRate(
+    @PrimaryKey
+    val id: String,
+    val base: String,
+    val target: String,
+    val rate: Double,
+    val date: String
+) {
+    companion object {
+        fun buildKey(base: String, target: String, date: String): String {
+            return "${base}_${target}_${date}"
+        }
+    }
+}

app/src/main/java/cc/n0th1ng/tripmoney/data/repository/ExchangeRateRepository.kt

@@ -0,0 +1,54 @@
+package cc.n0th1ng.tripmoney.data.repository
+
+import android.os.Build
+import androidx.annotation.RequiresApi
+import androidx.annotation.WorkerThread
+import cc.n0th1ng.tripmoney.data.dao.CategoryDao
+import cc.n0th1ng.tripmoney.data.dao.ExchangeRateDao
+import cc.n0th1ng.tripmoney.data.entity.Category
+import cc.n0th1ng.tripmoney.data.entity.ExchangeRate
+import cc.n0th1ng.tripmoney.service.ExchangeService
+import cc.n0th1ng.tripmoney.utils.Currencies
+import kotlinx.coroutines.flow.Flow
+import java.time.LocalDate
+import javax.inject.Inject
+
+class ExchangeRateRepository @Inject constructor(
+    private val exchangeRateDao: ExchangeRateDao,
+    private val exchangeService: ExchangeService
+) {
+
+    @WorkerThread
+    suspend fun save(exchangeRate: ExchangeRate) {
+        exchangeRateDao.insert(exchangeRate)
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    suspend fun getRate(base: Currencies, target: Currencies, date: LocalDate): Double {
+        val id = ExchangeRate.buildKey(base.name, target.name, date.toString())
+        val cachedRate = exchangeRateDao.getById(id)
+        return if (cachedRate != null) {
+            cachedRate.rate
+        } else {
+            val rate = exchangeService.getRate(base, target, date)
+            exchangeRateDao.insert(
+                ExchangeRate(
+                    id = id,
+                    base = base.name,
+                    target = target.name,
+                    rate = rate,
+                    date = date.toString()
+                )
+            )
+            clearOldRates()
+            rate
+        }
+    }
+
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private suspend fun clearOldRates(daysToKeep: Int = 180) {
+        val cutoffDate = LocalDate.now().minusDays(daysToKeep.toLong()).toString()
+        exchangeRateDao.deleteOldRates(cutoffDate)
+    }
+}

app/src/main/java/cc/n0th1ng/tripmoney/screens/addexpense/AddExpenseBottomSheet.kt

@@ -1,8 +1,13 @@
 package cc.n0th1ng.tripmoney.screens.addexpense
 
+import android.annotation.SuppressLint
 import android.os.Build
 import androidx.annotation.RequiresApi
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.focusable
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
@@ -10,16 +15,21 @@ import androidx.compose.foundation.layout.aspectRatio
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.SheetState
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
@@ -29,11 +39,17 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ModifierLocalBeyondBoundsLayout
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -50,26 +66,38 @@ import cc.n0th1ng.tripmoney.theme.TripMoneyTheme
 import cc.n0th1ng.tripmoney.utils.Currencies
 import cc.n0th1ng.tripmoney.viewmodel.ExpenseAndCategoryViewModel
 import cc.n0th1ng.tripmoney.viewmodel.SettingsViewModel
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 
 
+
 @OptIn(ExperimentalMaterial3Api::class)
 @RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun AddExpenseBottomSheet(
     onSave: (Expense) -> Unit,
     onDismiss: () -> Unit,
-    categories: List<Category>,
-    expenseDtoToEdit: ExpenseDto?
+    expenseDtoToEdit: ExpenseDto?,
+    state: SheetState,
+//    categories: List<Category> = emptyList()
 ) {
+    val expenseAndCategoryViewModel: ExpenseAndCategoryViewModel = hiltViewModel()
     val settingsViewModel: SettingsViewModel = hiltViewModel()
     val currentTripId by settingsViewModel.currentTrip.collectAsState()
+//    val currentTripId = 1
+    val categories by expenseAndCategoryViewModel.getCategories().collectAsState(emptyList())
+    if (categories.isEmpty()) {
+        return
+    }
     var amount by remember {
         mutableStateOf(
             expenseDtoToEdit?.expense?.amount?.toString() ?: "0.00"
         )
     }
+    val dummyFocusRequester = remember { FocusRequester() }
     var showCurrencyDialog by remember { mutableStateOf(false) }
     var showCategoryDialog by remember { mutableStateOf(false) }
     var showDateTimePicker by remember { mutableStateOf(false) }
@@ -88,21 +116,33 @@ fun AddExpenseBottomSheet(
     }
     var note by remember { mutableStateOf(expenseDtoToEdit?.expense?.note ?: "") }
     var enableSave by remember { mutableStateOf(expenseDtoToEdit != null) }
-    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+
 
     ModalBottomSheet(
         onDismissRequest = onDismiss,
-        sheetState = sheetState,
+        sheetState = state,
     ) {
         Column(
             modifier = Modifier
                 .fillMaxWidth()
-                .padding(16.dp),
-            horizontalAlignment = Alignment.CenterHorizontally
+                .padding(0.dp),
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.spacedBy(10.dp)
         ) {
+            Text(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(start = 15.dp),
+                text = stringResource(if (expenseDtoToEdit == null) R.string.add_expense else R.string.edit_expense),
+                fontWeight = FontWeight.Bold,
+                fontSize = 35.sp,
+                textAlign = TextAlign.Start
+            )
+            HorizontalDivider(modifier = Modifier.fillMaxWidth())
             Row(
+                modifier = Modifier.fillMaxWidth(0.9f),
                 verticalAlignment = Alignment.CenterVertically,
-                horizontalArrangement = Arrangement.spacedBy(9.dp)
+                horizontalArrangement = Arrangement.SpaceBetween
             ) {
                 Text(
                     text = amount.ifEmpty { "0.00" },
@@ -111,41 +151,44 @@ fun AddExpenseBottomSheet(
                 )
                 CurrencyButton(onClick = { showCurrencyDialog = true }, text = currency)
             }
-            Spacer(Modifier.height(14.dp))
-            OutlinedButton(onClick = { showDateTimePicker = true }) {
-                Text(
-                    text = datetime.format(DateTimeFormatter.ofPattern("dd.MM HH:mm")),
-                    fontSize = 17.sp
-                )
-            }
-            Spacer(Modifier.height(14.dp))
-            CategoryButton(onClick = { showCategoryDialog = true }, category = category)
-            Spacer(Modifier.height(14.dp))
             Row(
-                modifier = Modifier.height(50.dp),
+                modifier = Modifier.fillMaxWidth(0.9f),
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.spacedBy(10.dp)
             ) {
-                NoteInput(note = note) { newNote -> note = newNote }
-                SaveButton(
-                    enabled = enableSave,
-                    onClick = {
-                        val expenseToSave = Expense(
-                            amount = amount.toDouble(),
-                            currency = currency,
-                            note = note,
-                            datetime = datetime.toString(),
-                            categoryId = category.id,
-                            tripId = currentTripId
-                        )
-                        onSave(
-                            if (expenseDtoToEdit == null) expenseToSave
-                            else expenseToSave.copy(id = expenseDtoToEdit.expense.id)
-                        )
-                    }
+                OutlinedButton(
+                    onClick = { showDateTimePicker = true },
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Text(
+                        text = datetime.format(DateTimeFormatter.ofPattern("dd.MM HH:mm")),
+                        fontSize = 17.sp
+                    )
+                }
+                CategoryButton(
+                    onClick = { showCategoryDialog = true },
+                    category = category,
+                    modifier = Modifier.weight(1f)
+                )
+
+            }
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                NoteInput(
+                    note = note,
+                    onTextChange = { newNote -> note = newNote },
+                    modifier = Modifier.fillMaxWidth(0.9f),
+                    focusRequester = dummyFocusRequester
                 )
             }
-            Spacer(Modifier.height(14.dp))
+
+            Box(
+                modifier = Modifier
+                    .size(0.dp)
+                    .focusRequester(dummyFocusRequester)
+                    .focusable()
+            )
             NumberKeyboard(
                 onNumberClick = { number ->
                     val newText = (if (amount == "0.00") "" else amount) + number
@@ -155,13 +198,28 @@ fun AddExpenseBottomSheet(
                     } else if (amount == "0.00") {
                         enableSave = false
                     }
-
+                    dummyFocusRequester.requestFocus()
                 },
                 onBackspaceClick = {
                     if (amount == "0.00") return@NumberKeyboard
                     amount = amount.safeSubstring(0, amount.length - 1)
                     enableSave = amount.isDoubleTwoDigitsAboveZero()
-                })
+                },
+                onSave = {
+                    val expenseToSave = Expense(
+                        amount = amount.toDouble(),
+                        currency = currency,
+                        note = note,
+                        datetime = datetime.toString(),
+                        categoryId = category.id,
+                        tripId = currentTripId
+                    )
+                    onSave(
+                        if (expenseDtoToEdit == null) expenseToSave
+                        else expenseToSave.copy(id = expenseDtoToEdit.expense.id)
+                    )
+                }, enableSave = enableSave
+            )
 
         }
     }
@@ -210,29 +268,39 @@ fun String.isDoubleTwoDigitsAboveZero(): Boolean {
 }
 
 @Composable
-fun NoteInput(note: String, onTextChange: (String) -> Unit) {
+fun NoteInput(note: String, onTextChange: (String) -> Unit, modifier: Modifier = Modifier, focusRequester: FocusRequester) {
     var text by remember { mutableStateOf(note) }
 
     OutlinedTextField(
+        modifier = modifier,
         label = { Text(stringResource(R.string.note)) }, value = note, onValueChange = { newText ->
             text = newText
             onTextChange(text)
-        }, keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Text)
+        },
+        keyboardOptions = KeyboardOptions(
+            keyboardType = KeyboardType.Text,
+            imeAction = ImeAction.Done
+        ),
+        keyboardActions = KeyboardActions(
+            onDone = {
+                focusRequester.requestFocus()
+            }
+        )
     )
 }
 
 @Composable
-fun CurrencyButton(onClick: () -> Unit, text: String) {
-    OutlinedButton(onClick = onClick) {
+fun CurrencyButton(modifier: Modifier = Modifier, onClick: () -> Unit, text: String) {
+    OutlinedButton(onClick = onClick, modifier = modifier) {
         Text(text)
     }
 }
 
 @Composable
-fun CategoryButton(onClick: () -> Unit, category: Category) {
+fun CategoryButton(onClick: () -> Unit, category: Category, modifier: Modifier = Modifier) {
     OutlinedButton(
         onClick = onClick,
-        modifier = Modifier.fillMaxWidth(0.5f)
+        modifier = modifier
     ) {
         Icon(
             modifier = Modifier.padding(end = 10.dp),
@@ -258,20 +326,13 @@ fun SaveButton(enabled: Boolean, onClick: () -> Unit) {
     }
 }
 
-@Preview
-@Composable
-fun Preview() {
-    TripMoneyTheme(darkTheme = true) {
-        NumberKeyboard(onNumberClick = {}, onBackspaceClick = {})
-    }
-}
-
-
 @Composable
 fun NumberKeyboard(
     modifier: Modifier = Modifier,
     onNumberClick: (String) -> Unit,
-    onBackspaceClick: () -> Unit
+    onBackspaceClick: () -> Unit,
+    onSave: () -> Unit,
+    enableSave: Boolean
 ) {
     val buttonModifier = Modifier
         .padding(4.dp)
@@ -285,91 +346,109 @@ fun NumberKeyboard(
             modifier = Modifier.fillMaxWidth(),
             horizontalArrangement = Arrangement.spacedBy(4.dp)
         ) {
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("1") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("1", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("2") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("2", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("3") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("3", fontSize = 20.sp)
             }
+            TextButton(
+                onClick = { onNumberClick("") },
+                modifier = buttonModifier.weight(1f)
+            ) {
+                Text("+", fontSize = 20.sp)
+            }
         }
 
         Row(
             modifier = Modifier.fillMaxWidth(),
             horizontalArrangement = Arrangement.spacedBy(4.dp)
         ) {
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("4") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("4", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("5") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("5", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("6") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("6", fontSize = 20.sp)
             }
+            TextButton(
+                onClick = { onNumberClick("") },
+                modifier = buttonModifier.weight(1f)
+            ) {
+                Text("-", fontSize = 20.sp)
+            }
         }
 
         Row(
             modifier = Modifier.fillMaxWidth(),
             horizontalArrangement = Arrangement.spacedBy(4.dp)
         ) {
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("7") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("7", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("8") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("8", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("9") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("9", fontSize = 20.sp)
             }
+            TextButton(
+                onClick = { onNumberClick("") },
+                modifier = buttonModifier.weight(1f)
+            ) {
+                Text("*", fontSize = 20.sp)
+            }
         }
 
         Row(
             modifier = Modifier.fillMaxWidth(),
             horizontalArrangement = Arrangement.spacedBy(4.dp)
         ) {
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick(".") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text(".", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = { onNumberClick("0") },
                 modifier = buttonModifier.weight(1f)
             ) {
                 Text("0", fontSize = 20.sp)
             }
-            OutlinedButton(
+            TextButton(
                 onClick = onBackspaceClick,
                 modifier = buttonModifier.weight(1f)
             ) {
@@ -378,6 +457,147 @@ fun NumberKeyboard(
                     contentDescription = stringResource(R.string.backspace)
                 )
             }
+            TextButton(
+                onClick = onSave,
+                modifier = buttonModifier.weight(1f),
+                enabled = enableSave
+            ) {
+                Icon(
+                    imageVector = Icons.Default.Check,
+                    contentDescription = stringResource(R.string.backspace)
+                )
+            }
         }
     }
 }
+
+
+//@SuppressLint("CoroutineCreationDuringComposition")
+//@RequiresApi(Build.VERSION_CODES.O)
+//@OptIn(ExperimentalMaterial3Api::class)
+//@Preview
+//@Composable
+//fun PreviewLight() {
+//    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+//    CoroutineScope(Dispatchers.IO).launch {
+//        sheetState.show()
+//    }
+//
+//    TripMoneyTheme {
+//        AddExpenseBottomSheet(
+//            {}, {}, null, sheetState,
+//            categories = listOf(
+//                Category(
+//                    name = "Hotel",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.HOTEL,
+//                    color = "#B3E5FC"
+//                ),
+//                Category(
+//                    name = "Jedzenie",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.RESTAURANT,
+//                    color = "#C8E6C9"
+//                ),
+//                Category(
+//                    name = "Transport",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.FLIGHT,
+//                    color = "#FFCDD2"
+//                ),
+//                Category(
+//                    name = "Rozrywka",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.ATTRACTION,
+//                    color = "#FFF9C4"
+//                ),
+//                Category(
+//                    name = "Zakupy",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#E1BEE7"
+//                ),
+//                Category(
+//                    name = "Zakupy1",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#D7CCC8"
+//                ),
+//                Category(
+//                    name = "Zakupy2",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#BBDEFB"
+//                ),
+//                Category(
+//                    name = "Zakupy3",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#D1C4E9"
+//                ),
+//                Category(
+//                    name = "Zakupy4",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#DCEDC8"
+//                ),
+//            )
+//        )
+//    }
+//}
+//
+//@SuppressLint("CoroutineCreationDuringComposition")
+//@RequiresApi(Build.VERSION_CODES.O)
+//@OptIn(ExperimentalMaterial3Api::class)
+//@Preview
+//@Composable
+//fun PreviewDark() {
+//    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+//    CoroutineScope(Dispatchers.IO).launch {
+//        sheetState.show()
+//    }
+//
+//    TripMoneyTheme(darkTheme = true) {
+//        AddExpenseBottomSheet(
+//            {}, {}, null, sheetState,
+//            categories = listOf(
+//                Category(
+//                    name = "Hotel",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.HOTEL,
+//                    color = "#B3E5FC"
+//                ),
+//                Category(
+//                    name = "Jedzenie",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.RESTAURANT,
+//                    color = "#C8E6C9"
+//                ),
+//                Category(
+//                    name = "Transport",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.FLIGHT,
+//                    color = "#FFCDD2"
+//                ),
+//                Category(
+//                    name = "Rozrywka",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.ATTRACTION,
+//                    color = "#FFF9C4"
+//                ),
+//                Category(
+//                    name = "Zakupy",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#E1BEE7"
+//                ),
+//                Category(
+//                    name = "Zakupy1",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#D7CCC8"
+//                ),
+//                Category(
+//                    name = "Zakupy2",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#BBDEFB"
+//                ),
+//                Category(
+//                    name = "Zakupy3",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#D1C4E9"
+//                ),
+//                Category(
+//                    name = "Zakupy4",
+//                    icon = cc.n0th1ng.tripmoney.utils.Icons.GROCERIES,
+//                    color = "#DCEDC8"
+//                ),
+//            )
+//        )
+//    }
+//}

app/src/main/java/cc/n0th1ng/tripmoney/screens/listexpense/ListExpenseScreen.kt

@@ -5,6 +5,7 @@ import android.os.Build
 import androidx.annotation.RequiresApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -33,6 +34,7 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SwipeToDismissBox
 import androidx.compose.material3.SwipeToDismissBoxValue
 import androidx.compose.material3.Text
+import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.material3.rememberSwipeToDismissBoxState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
@@ -56,10 +58,14 @@ import cc.n0th1ng.tripmoney.R.string
 import cc.n0th1ng.tripmoney.data.entity.Expense
 import cc.n0th1ng.tripmoney.data.entity.ExpenseDto
 import cc.n0th1ng.tripmoney.screens.addexpense.AddExpenseBottomSheet
+import cc.n0th1ng.tripmoney.service.ExchangeService
+import cc.n0th1ng.tripmoney.utils.Currencies
 import cc.n0th1ng.tripmoney.viewmodel.ExpenseAndCategoryViewModel
 import cc.n0th1ng.tripmoney.viewmodel.SettingsViewModel
+import java.time.LocalDate
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
+import javax.inject.Inject
 
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -71,8 +77,6 @@ fun ListExpenseScreen() {
     val settingsViewModel: SettingsViewModel = hiltViewModel()
 
     val currentTrip by settingsViewModel.currentTrip.collectAsState()
-    val categories by expenseAndCategoryViewModel.getCategories()
-        .collectAsState(initial = emptyList())
     val expenses = expenseAndCategoryViewModel.getExpenses(currentTrip).collectAsLazyPagingItems()
     val listState = rememberLazyListState()
     var showBottomSheet by remember { mutableStateOf(false) }
@@ -98,27 +102,13 @@ fun ListExpenseScreen() {
                 val expenseDto = expenses[index]
                 if (expenseDto != null) {
                     val previousExpense = expenses.itemSnapshotList.items.getOrNull(index - 1)
-
                     val showDayDivider =
                         index == 0 || LocalDateTime.parse(previousExpense?.expense?.datetime)
                             .toLocalDate() != LocalDateTime.parse(expenseDto.expense.datetime)
                             .toLocalDate()
                     Spacer(Modifier.height(5.dp))
                     if (showDayDivider) {
-                        Row(
-                            modifier = Modifier.fillMaxWidth(),
-                            horizontalArrangement = Arrangement.Absolute.Center,
-                            verticalAlignment = Alignment.CenterVertically
-                        ) {
-                            HorizontalDivider(modifier = Modifier.weight(1f))
-                            Text(
-                                LocalDateTime.parse(expenseDto.expense.datetime).format(
-                                    DateTimeFormatter.ofPattern("dd EEEE")
-                                ).toString(),
-                                modifier = Modifier.background(Color.White.copy(alpha = 0f))
-                            )
-                            HorizontalDivider(modifier = Modifier.weight(1f))
-                        }
+                        CustomDivider(expenseDto)
                     }
                     Spacer(Modifier.height(5.dp))
                     SwipeToDeleteExpenseCard(
@@ -143,13 +133,32 @@ fun ListExpenseScreen() {
                     expenseDtoToEdit = null
                     showBottomSheet = false
                 },
-                categories = categories,
-                expenseDtoToEdit = expenseDtoToEdit
+                expenseDtoToEdit = expenseDtoToEdit,
+                state = rememberModalBottomSheetState(skipPartiallyExpanded = true)
             )
         }
     }
 }
 
+@RequiresApi(Build.VERSION_CODES.O)
+@Composable
+fun CustomDivider(expenseDto: ExpenseDto) {
+    Row(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalArrangement = Arrangement.Absolute.Center,
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        HorizontalDivider(modifier = Modifier.weight(1f))
+        Text(
+            LocalDateTime.parse(expenseDto.expense.datetime).format(
+                DateTimeFormatter.ofPattern("dd EEEE")
+            ).toString(),
+            modifier = Modifier.background(Color.White.copy(alpha = 0f))
+        )
+        HorizontalDivider(modifier = Modifier.weight(1f))
+    }
+}
+
 @RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun SwipeToDeleteExpenseCard(
@@ -257,7 +266,10 @@ fun ExpenseCard(expenseDto: ExpenseDto, onClick: (ExpenseDto) -> Unit) {
         modifier = Modifier
             .fillMaxWidth(0.9f)
             .height(70.dp)
-            .clickable { onClick(expenseDto) },
+            .combinedClickable(
+                enabled = true,
+                onClick = { onClick(expenseDto) },
+                onLongClick = { onClick(expenseDto) }),
         elevation = CardDefaults.cardElevation(defaultElevation = 7.dp)
     ) {
         Row(
@@ -312,8 +324,16 @@ fun ExpenseCard(expenseDto: ExpenseDto, onClick: (ExpenseDto) -> Unit) {
                     fontWeight = FontWeight.Bold
                 )
                 if (expenseDto.expense.currency.lowercase() != expenseDto.trip.currency.lowercase()) {
+                    val expenseAndCategoryViewModel: ExpenseAndCategoryViewModel = hiltViewModel()
+                    val amount by
+                    expenseAndCategoryViewModel.convertAmount(
+                        amount = expenseDto.expense.amount,
+                        base = Currencies.valueOf(expenseDto.expense.currency),
+                        target = Currencies.valueOf(expenseDto.trip.currency),
+                        date = LocalDateTime.parse(expenseDto.expense.datetime).toLocalDate()
+                    ).collectAsState(initial = 0.0)
                     Text(
-                        text = "≈ %.2f ${expenseDto.trip.currency}".format(expenseDto.expense.amount),
+                        text = "≈ %.2f ${expenseDto.trip.currency}".format(amount),
                         fontSize = 12.sp
                     )
                 }

app/src/main/java/cc/n0th1ng/tripmoney/screens/trippicker/AddTripBottomSheet.kt

@@ -2,20 +2,27 @@ package cc.n0th1ng.tripmoney.screens.trippicker
 
 import android.os.Build
 import androidx.annotation.RequiresApi
+import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Check
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Shapes
+import androidx.compose.material3.SheetState
 import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -23,31 +30,32 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Shape
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import cc.n0th1ng.tripmoney.R
-import cc.n0th1ng.tripmoney.R.string
 import cc.n0th1ng.tripmoney.data.entity.Trip
 import cc.n0th1ng.tripmoney.screens.addexpense.CurrencyButton
-import cc.n0th1ng.tripmoney.screens.addexpense.isDoubleTwoDigitsAboveZero
 import cc.n0th1ng.tripmoney.screens.listexpense.CurrencySelectionDialog
 import cc.n0th1ng.tripmoney.screens.listexpense.DatePicker
-import cc.n0th1ng.tripmoney.screens.listexpense.DateTimePicker
 import cc.n0th1ng.tripmoney.utils.Currencies
-import java.time.Instant
 import java.time.LocalDate
-import java.time.LocalDateTime
-import java.time.ZoneId
 import java.time.format.DateTimeFormatter
 
 @RequiresApi(Build.VERSION_CODES.O)
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-fun AddTripBottomSheet(onDismiss: () -> Unit, onSave: (Trip) -> Unit, tripToEdit: Trip?) {
+fun AddTripBottomSheet(
+    onDismiss: () -> Unit,
+    onSave: (Trip) -> Unit,
+    tripToEdit: Trip?,
+    sheetState: SheetState
+) {
 
-    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
     var name by remember { mutableStateOf(tripToEdit?.name ?: "") }
     var startDate by remember {
         mutableStateOf(
@@ -65,31 +73,61 @@ fun AddTripBottomSheet(onDismiss: () -> Unit, onSave: (Trip) -> Unit, tripToEdit
     ) {
         Column(
             modifier = Modifier
-                .fillMaxWidth()
-                .padding(16.dp),
-            horizontalAlignment = Alignment.Start
+                .fillMaxWidth(),
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.spacedBy(10.dp)
         ) {
+            Text(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(start = 15.dp),
+                text = stringResource(if(tripToEdit == null) R.string.add_trip else R.string.edit_trip),
+                fontWeight = FontWeight.Bold,
+                fontSize = 35.sp,
+                textAlign = TextAlign.Start
+            )
+            HorizontalDivider(modifier = Modifier.fillMaxWidth())
             NameInput(name = name, onTextChange = { newText ->
                 name = newText
                 enableSave = !name.isEmpty()
             })
-            CurrencyButton(onClick = {showCurrencyDialog = true}, currency)
-            OutlinedButton(onClick = { showDatePicker = true }) {
-                Text(
-                    text = startDate.format(DateTimeFormatter.ofPattern("dd.MM.yyyy")),
-                    fontSize = 17.sp
+            Row(
+                modifier = Modifier.fillMaxWidth(0.9f),
+                horizontalArrangement = Arrangement.spacedBy(10.dp)
+            ) {
+                CurrencyButton(
+                    modifier = Modifier
+                        .weight(1f)
+                        .fillMaxWidth(1f),
+                    onClick = { showCurrencyDialog = true }, text = currency
                 )
+                OutlinedButton(
+                    modifier = Modifier
+                        .fillMaxWidth(1f)
+                        .weight(1f),
+                    onClick = { showDatePicker = true }) {
+                    Text(
+                        text = startDate.format(DateTimeFormatter.ofPattern("dd.MM.yyyy")),
+                        fontSize = 17.sp
+                    )
+                }
+
             }
-            OutlinedButton(
+
+            Button(
+                modifier = Modifier.fillMaxWidth(0.9f),
                 enabled = enableSave,
                 onClick = {
-                onSave(Trip(name = name, startDate = startDate.toString(), currency = currency))
-            }) {
+                    val trip = Trip(name = name, startDate = startDate.toString(), currency = currency)
+
+                    onSave(if(tripToEdit == null) trip else trip.copy(id = tripToEdit.id))
+                }) {
                 Icon(
                     imageVector = Icons.Filled.Check,
                     contentDescription = stringResource(R.string.save)
                 )
             }
+            Spacer(Modifier.height(5.dp))
         }
     }
 
@@ -105,7 +143,7 @@ fun AddTripBottomSheet(onDismiss: () -> Unit, onSave: (Trip) -> Unit, tripToEdit
     }
 
     if (showDatePicker) {
-        DatePicker(startDate, onDismiss = {showDatePicker = false}, onConfirm = { newDate ->
+        DatePicker(startDate, onDismiss = { showDatePicker = false }, onConfirm = { newDate ->
             startDate = newDate
             showDatePicker = false
         })
@@ -116,10 +154,10 @@ fun AddTripBottomSheet(onDismiss: () -> Unit, onSave: (Trip) -> Unit, tripToEdit
 fun NameInput(name: String, onTextChange: (String) -> Unit) {
     var text by remember { mutableStateOf(name) }
     OutlinedTextField(
+        modifier = Modifier.fillMaxWidth(0.9f),
         label = { Text(stringResource(R.string.name)) }, value = name, onValueChange = { newText ->
             text = newText
             onTextChange(text)
         }, keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Text)
     )
 }
-

app/src/main/java/cc/n0th1ng/tripmoney/screens/trippicker/TripPickerScreen.kt

@@ -5,6 +5,7 @@ import android.os.Build
 import androidx.annotation.RequiresApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -19,6 +20,7 @@ import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.ElevatedCard
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.ExtendedFloatingActionButton
 import androidx.compose.material3.FabPosition
 import androidx.compose.material3.FloatingActionButton
@@ -28,6 +30,7 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SwipeToDismissBox
 import androidx.compose.material3.SwipeToDismissBoxValue
 import androidx.compose.material3.Text
+import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.material3.rememberSwipeToDismissBoxState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
@@ -39,6 +42,8 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.hapticfeedback.HapticFeedbackType
+import androidx.compose.ui.platform.LocalHapticFeedback
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
@@ -56,6 +61,7 @@ import cc.n0th1ng.tripmoney.screens.listexpense.DeleteConfirmationDialog
 import cc.n0th1ng.tripmoney.viewmodel.SettingsViewModel
 import cc.n0th1ng.tripmoney.viewmodel.TripViewModel
 
+@OptIn(ExperimentalMaterial3Api::class)
 @RequiresApi(Build.VERSION_CODES.O)
 @Composable
 @SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
@@ -67,6 +73,7 @@ fun TripPickerScreen(
     var showBottomSheet by remember { mutableStateOf(false) }
     val trips: LazyPagingItems<Trip> = tripViewModel.getTrips().collectAsLazyPagingItems()
     val currentTripId by settingsViewModel.currentTrip.collectAsState()
+    var tripToEdit by remember { mutableStateOf<Trip?>(null) }
     Scaffold(floatingActionButtonPosition = FabPosition.EndOverlay, floatingActionButton = {
         FloatingActionButton(
             onClick = { showBottomSheet = true }) {
@@ -83,12 +90,17 @@ fun TripPickerScreen(
                 Spacer(Modifier.height(10.dp))
                 val trip = trips[i]
                 if (trip != null) {
-                    SwipeToDeleteTripCard(trip, onDelete = {
+                    SwipeToDeleteTripCard(
+                        trip, onDelete = {
                         tripViewModel.delete(trip)
                     }, onClick = {
                         settingsViewModel.setCurrentTrip(trip.id)
                         navController.navigate(Screens.LIST_EXPENSE)
-                    }, isSelected = currentTripId == trip.id)
+                    }, isSelected = currentTripId == trip.id,
+                        onLongClick = { trip ->
+                            tripToEdit = trip
+                            showBottomSheet = true
+                        })
                 }
                 Spacer(Modifier.height(10.dp))
             }
@@ -98,12 +110,15 @@ fun TripPickerScreen(
             AddTripBottomSheet(
                 onDismiss = {
                     showBottomSheet = false
+                    tripToEdit = null
                 },
                 onSave = { trip ->
                     tripViewModel.save(trip)
                     showBottomSheet = false
+                    tripToEdit = null
                 },
-                null
+                tripToEdit = tripToEdit,
+                sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
             )
         }
     }
@@ -112,7 +127,8 @@ fun TripPickerScreen(
 @RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun SwipeToDeleteTripCard(
-    trip: Trip, onDelete: (Trip) -> Unit, onClick: (Trip) -> Unit, isSelected: Boolean
+    trip: Trip, onDelete: (Trip) -> Unit, onClick: (Trip) -> Unit, isSelected: Boolean,
+    onLongClick: (Trip) -> Unit
 ) {
     var dismissed by remember { mutableStateOf(false) }
     var showDialog by remember { mutableStateOf(false) }
@@ -151,18 +167,27 @@ fun SwipeToDeleteTripCard(
                     Icon(Icons.Default.Delete, contentDescription = stringResource(string.delete))
                 }
             }) {
-            TripCard(trip, isSelected, onClick = onClick)
+            TripCard(trip, isSelected, onClick = onClick, onLongClick = onLongClick)
         }
     }
 }
 
 
 @Composable
-fun TripCard(trip: Trip, isSelected: Boolean, onClick: (Trip) -> Unit) {
+fun TripCard(
+    trip: Trip,
+    isSelected: Boolean,
+    onClick: (Trip) -> Unit,
+    onLongClick: (Trip) -> Unit
+) {
+    val haptics = LocalHapticFeedback.current
     ElevatedCard(
         modifier = Modifier
             .height(100.dp)
-            .clickable(true, onClick = { onClick(trip) }),
+            .combinedClickable(enabled = true, onLongClick = {
+                haptics.performHapticFeedback(HapticFeedbackType.LongPress)
+                onLongClick(trip)
+            }, onClick = { onClick(trip) }),
         elevation = CardDefaults.cardElevation(defaultElevation = if (isSelected) 7.dp else 0.dp)
     ) {
         Row(

app/src/main/java/cc/n0th1ng/tripmoney/service/ExchangeService.kt

@@ -0,0 +1,35 @@
+package cc.n0th1ng.tripmoney.service
+
+import cc.n0th1ng.tripmoney.utils.Currencies
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.request.get
+import io.ktor.client.statement.bodyAsText
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.double
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import org.json.JSONObject
+import java.time.LocalDate
+import javax.inject.Inject
+
+class ExchangeService @Inject() constructor() {
+    private val API_URL: String = "https://api.frankfurter.dev"
+    private val client = HttpClient()
+
+    suspend fun getRate(base: Currencies, target: Currencies, date: LocalDate): Double {
+        return try {
+            val response = client.get("$API_URL/v1/$date") {
+                url {
+                    parameters.append("base", base.name)
+                    parameters.append("symbols", target.name)
+                }
+            }
+            val json = Json
+            json.parseToJsonElement(response.bodyAsText()).jsonObject["rates"]?.jsonObject[target.name]?.jsonPrimitive?.double
+                ?: throw Exception("can not find rates")
+        } catch (e: Exception) {
+            throw IllegalStateException("Error fetching exchange rate: ${e.message}")
+        }
+    }
+}

app/src/main/java/cc/n0th1ng/tripmoney/theme/Theme.kt

@@ -2,13 +2,16 @@ package cc.n0th1ng.tripmoney.theme
 
 import android.os.Build
 import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Shapes
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.dynamicDarkColorScheme
 import androidx.compose.material3.dynamicLightColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
 
 private val DarkColorScheme = darkColorScheme(
     primary = Purple80,
@@ -44,7 +47,6 @@ fun TripMoneyTheme(
             val context = LocalContext.current
             if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
         }
-
         darkTheme -> DarkColorScheme
         else -> LightColorScheme
     }

app/src/main/java/cc/n0th1ng/tripmoney/viewmodel/ExpenseAndCategoryViewModel.kt

@@ -9,16 +9,23 @@ import cc.n0th1ng.tripmoney.data.entity.Category
 import cc.n0th1ng.tripmoney.data.entity.Expense
 import cc.n0th1ng.tripmoney.data.entity.ExpenseDto
 import cc.n0th1ng.tripmoney.data.repository.CategoryRepository
+import cc.n0th1ng.tripmoney.data.repository.ExchangeRateRepository
 import cc.n0th1ng.tripmoney.data.repository.ExpenseRepository
+import cc.n0th1ng.tripmoney.service.ExchangeService
+import cc.n0th1ng.tripmoney.utils.Currencies
 import dagger.hilt.android.lifecycle.HiltViewModel
+import io.ktor.client.request.get
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.launch
+import java.time.LocalDate
 import javax.inject.Inject
 
 @HiltViewModel
 class ExpenseAndCategoryViewModel @Inject constructor(
     private val expenseRepo: ExpenseRepository,
-    private val categoryRepo: CategoryRepository
+    private val categoryRepo: CategoryRepository,
+    private val exchangeRateRepository: ExchangeRateRepository
 ) : ViewModel() {
 
     fun getExpenses(tripId: Int): Flow<PagingData<ExpenseDto>> =
@@ -43,4 +50,10 @@ class ExpenseAndCategoryViewModel @Inject constructor(
             categoryRepo.save(category)
         }
     }
+
+    fun convertAmount(amount: Double, base: Currencies, target: Currencies, date: LocalDate): Flow<Double> {
+        return flow {
+            emit(amount * exchangeRateRepository.getRate(base, target, date))
+        }
+    }
 }

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

@@ -16,6 +16,8 @@
     <string name="system_settings">Zgodnie z systemem</string>
     <string name="theme">Motyw</string>
     <string name="dark_theme">Ciemny motyw</string>
-    <string name="add_trip">Dodaj Wycieczkę</string>
+    <string name="add_trip">Dodaj wycieczkę</string>
     <string name="name">Nazwa</string>
+    <string name="edit_trip">Edytuj wycieczkę</string>
+    <string name="edit_expense">Edytuj wydatek</string>
 </resources>

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

@@ -18,4 +18,6 @@
     <string name="system_settings">System settings</string>
     <string name="add_trip">Add Trip</string>
     <string name="name">Name</string>
+    <string name="edit_trip">Edit trip</string>
+    <string name="edit_expense">Edit expense</string>
 </resources>