Refactor: Clean up imports and formatting in UI components

This commit addresses minor code style issues by removing unused imports and standardizing formatting across several UI components within the `ui:quiz` module.

Key changes:

- **`ui/quiz/QuizScreen.kt`**:
    - Added `modifier` parameter to `QuizScreenLoading`'s `CircularProgressIndicator`.
- **`ui/quiz/QuizScreenViewModel.kt`**:
    - Improved code formatting for readability, particularly around `timerState` updates and retrieving question times.
- **`ui/quiz/components/TimerBar.kt`**:
    - Removed unused import `androidx.compose.ui.draw.clipToBounds`.
- **`ui/quiz/components/QuestionContent.kt`**:
    - Reordered imports alphabetically.
- **`ui/quiz/components/Choices.kt`**:
    - Removed unused import `androidx.compose.foundation.layout.width`.
- **`ui/quiz/components/Toolbar.kt`**:
    - Removed unused imports `androidx.compose.foundation.layout.fillMaxWidth` and `androidx.compose.foundation.layout.height`.

core/designsystem/src/main/kotlin/dev/adriankuta/kahootquiz/core/designsystem/Color.kt

@@ -19,11 +19,12 @@ val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
 val Pink40 = Color(0xFF7D5260)
 
-val Grey = Color(0xFFFAFAFA)
-val Pink = Color(0xFFFF99AA)
-val Red = Color(0xFFFF3355)
-val Red2 = Color(0xFFE21B3C)
 val Blue2 = Color(0xFF1368CE)
-val Yellow3 = Color(0xFFD89E00)
 val Green = Color(0xFF66BF39)
 val Green2 = Color(0xFF26890C)
+val Grey = Color(0xFFFAFAFA)
+val Pink = Color(0xFFFF99AA)
+val Purple = Color(0xFF864CBF)
+val Red = Color(0xFFFF3355)
+val Red2 = Color(0xFFE21B3C)
+val Yellow3 = Color(0xFFD89E00)

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/QuizScreen.kt

@@ -1,26 +1,19 @@
 package dev.adriankuta.kahootquiz.ui.quiz
 
+import androidx.compose.animation.animateContentSize
 import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.PaddingValues
-import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.heightIn
-import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyListScope
-import androidx.compose.foundation.lazy.grid.GridCells
-import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
-import androidx.compose.foundation.lazy.grid.itemsIndexed
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.FilledTonalButton
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
@@ -30,26 +23,18 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import androidx.core.text.HtmlCompat
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import coil3.compose.AsyncImage
-import dev.adriankuta.kahootquiz.core.designsystem.Blue2
-import dev.adriankuta.kahootquiz.core.designsystem.Green
-import dev.adriankuta.kahootquiz.core.designsystem.Green2
 import dev.adriankuta.kahootquiz.core.designsystem.Grey
 import dev.adriankuta.kahootquiz.core.designsystem.KahootQuizTheme
-import dev.adriankuta.kahootquiz.core.designsystem.Pink
-import dev.adriankuta.kahootquiz.core.designsystem.Red
-import dev.adriankuta.kahootquiz.core.designsystem.Red2
-import dev.adriankuta.kahootquiz.core.designsystem.Yellow3
-import dev.adriankuta.kahootquiz.core.designsystem.contrastiveTo
-import dev.adriankuta.kahootquiz.core.designsystem.toAnnotatedString
 import dev.adriankuta.kahootquiz.domain.models.Choice
 import dev.adriankuta.kahootquiz.domain.models.Question
+import dev.adriankuta.kahootquiz.ui.quiz.components.Choices
+import dev.adriankuta.kahootquiz.ui.quiz.components.QuestionContent
+import dev.adriankuta.kahootquiz.ui.quiz.components.TimerBar
+import dev.adriankuta.kahootquiz.ui.quiz.components.Toolbar
 import kotlin.time.Duration.Companion.seconds
 import dev.adriankuta.kahootquiz.core.designsystem.R as DesignR
 
@@ -64,14 +49,16 @@ fun QuizScreen(
     QuizScreen(
         uiState = uiState,
         onSelect = viewModel::onChoiceSelected,
+        onContinue = viewModel::onContinue,
         modifier = modifier.fillMaxSize(),
     )
 }
 
 @Composable
 private fun QuizScreen(
-    uiState: QuizUiState,
+    uiState: ScreenUiState,
     onSelect: (Int) -> Unit,
+    onContinue: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
     Box(modifier.fillMaxSize()) {
@@ -81,244 +68,134 @@ private fun QuizScreen(
             contentScale = ContentScale.Crop,
             modifier = Modifier.fillMaxSize(),
         )
-        Column(
+        when (uiState) {
-            modifier = Modifier
+            ScreenUiState.Loading -> QuizScreenLoading()
-                .fillMaxWidth(),
+            is ScreenUiState.Success -> QuizScreenSuccess(
-        ) {
+                uiState = uiState,
-            Toolbar(
+                onSelect = onSelect,
-                modifier = Modifier
+                onContinue = onContinue,
-                    .fillMaxWidth()
-                    .height(72.dp)
-                    .padding(8.dp),
             )
+
+        }
+    }
+}
+
+@Composable
+private fun QuizScreenLoading(
+    modifier: Modifier = Modifier,
+) {
+    CircularProgressIndicator(
+        modifier = modifier,
+    )
+}
+
+@Composable
+private fun QuizScreenSuccess(
+    uiState: ScreenUiState.Success,
+    onSelect: (Int) -> Unit,
+    onContinue: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    LazyColumn(
+        modifier = modifier
+            .fillMaxWidth()
+            .animateContentSize(),
+    ) {
+        toolbar(uiState)
+        questionContent(uiState)
+        choices(uiState, onSelect)
+        // Timer below choices
+        if (uiState.selectedChoiceIndex == null && uiState.timerState.totalTimeSeconds > 0) {
+            timer(uiState)
+        } else {
+            continueButton(uiState, onContinue)
+        }
+    }
+}
+
+private fun LazyListScope.toolbar(
+    uiState: ScreenUiState.Success,
+) {
+    item(key = "toolbar") {
+        Toolbar(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(72.dp)
+                .padding(8.dp),
+            currentQuestionIndex = uiState.currentQuestionIndex,
+            totalQuestions = uiState.totalQuestions,
+        )
+    }
+}
+
+private fun LazyListScope.questionContent(
+    uiState: ScreenUiState.Success,
+) {
+    if (uiState.currentQuestion != null) {
+        item(key = "question_${uiState.currentQuestionIndex}") {
             QuestionContent(
-                question = uiState.currentQuestion ?: return,
+                question = uiState.currentQuestion,
-                modifier = Modifier.padding(horizontal = 8.dp),
+                modifier = Modifier
+                    .padding(horizontal = 8.dp)
+                    .animateItem(),
             )
             Spacer(Modifier.height(8.dp))
-            Choices(
-                choices = uiState.currentQuestion.choices ?: emptyList(), // TODO remove empty list
-                answer = uiState.answer,
-                onSelect = onSelect,
-            )
         }
     }
 }
 
-@Composable
+private fun LazyListScope.timer(uiState: ScreenUiState.Success) {
-private fun Toolbar(
+    item(key = "timer_${uiState.currentQuestionIndex}") {
-    modifier: Modifier = Modifier,
+        TimerBar(
-) {
+            totalSeconds = uiState.timerState.totalTimeSeconds,
-    Box(
+            remainingSeconds = uiState.timerState.remainingTimeSeconds,
-        modifier = modifier,
+            modifier = Modifier.padding(8.dp),
-    ) {
-        Text(
-            text = "2/24",
-            modifier = Modifier
-                .align(Alignment.CenterStart)
-                .background(
-                    color = Grey,
-                    shape = RoundedCornerShape(60.dp),
-                )
-                .padding(horizontal = 8.dp, vertical = 4.dp),
         )
+    }
+}
 
-        Row(
+private fun LazyListScope.continueButton(
-            modifier = Modifier
+    uiState: ScreenUiState.Success,
-                .align(Alignment.Center)
+    onContinue: () -> Unit,
-                .background(
+) {
-                    color = Grey,
+    item(key = "continue_${uiState.currentQuestionIndex}") {
-                    shape = RoundedCornerShape(60.dp),
+        Box(
-                )
+            modifier = Modifier.fillMaxWidth(),
-                .padding(horizontal = 8.dp, vertical = 4.dp),
         ) {
-            Image(
+            FilledTonalButton(
-                painter = painterResource(id = DesignR.drawable.ic_type),
+                onClick = onContinue,
-                contentDescription = "",
+                colors = ButtonDefaults.filledTonalButtonColors().copy(
-                modifier = Modifier.size(24.dp),
+                    containerColor = Grey,
-            )
+                    contentColor = Color.Black,
-            Spacer(Modifier.width(4.dp))
-            Text(
-                text = stringResource(R.string.quiz),
-            )
-        }
-    }
-}
-
-@Composable
-private fun QuestionContent(
-    question: Question,
-    modifier: Modifier = Modifier,
-) {
-    Column(
-        modifier = modifier,
-    ) {
-        AsyncImage(
-            model = question.image,
-            contentDescription = question.imageMetadata?.altText,
-            contentScale = ContentScale.FillWidth,
-            modifier = Modifier
-                .fillMaxWidth()
-                .heightIn(min = 200.dp),
-        )
-        Spacer(Modifier.height(16.dp))
-        Text(
-            text = HtmlCompat.fromHtml(
-                question.question ?: "",
-                HtmlCompat.FROM_HTML_MODE_COMPACT,
-            ).toAnnotatedString(),
-            textAlign = TextAlign.Center,
-            modifier = Modifier
-                .fillMaxWidth()
-                .background(
-                    color = Color.White,
-                    shape = RoundedCornerShape(4.dp),
-                )
-                .padding(horizontal = 8.dp, vertical = 16.dp),
-        )
-    }
-}
-
-@Composable
-private fun Choices(
-    choices: List<Choice>,
-    onSelect: (Int) -> Unit,
-    answer: AnswerUiState?,
-    modifier: Modifier = Modifier,
-) {
-    LazyVerticalGrid(
-        columns = GridCells.Fixed(2),
-        contentPadding = PaddingValues(8.dp),
-        horizontalArrangement = Arrangement.spacedBy(8.dp),
-        verticalArrangement = Arrangement.spacedBy(8.dp),
-        modifier = modifier,
-    ) {
-        itemsIndexed(choices) { index, choice ->
-            ChoiceItem(
-                choice = choice,
-                index = index,
-                answer = answer,
-                onClick = { onSelect(index) },
-            )
-        }
-    }
-}
-
-@Composable
-private fun ChoiceItem(
-    choice: Choice,
-    onClick: () -> Unit,
-    index: Int,
-    answer: AnswerUiState?,
-) {
-    if (answer != null) {
-        ChoiceItemRevealed(
-            choice = choice,
-            index = index,
-            isSelected = answer.selectedChoiceIndex == index,
-        )
-    } else {
-        ChoiceItemDefault(
-            choice = choice,
-            index = index,
-            onClick = onClick,
-        )
-    }
-}
-
-@Composable
-private fun ChoiceItemDefault(
-    choice: Choice,
-    index: Int,
-    onClick: () -> Unit,
-) {
-    val backgroundColor = when (index) {
-        0 -> Red2
-        1 -> Blue2
-        2 -> Yellow3
-        3 -> Green2
-        else -> Color.Gray
-    }
-
-    // TODO Add icons
-    val icon = when (index) {
-        0 -> DesignR.drawable.ic_triangle
-        1 -> DesignR.drawable.ic_diamond
-        2 -> DesignR.drawable.ic_circle
-        else -> DesignR.drawable.ic_square
-    }
-    Box(
-        modifier = Modifier
-            .background(backgroundColor, shape = RoundedCornerShape(4.dp))
-            .height(100.dp)
-            .clickable(
-                onClick = onClick,
-            ),
-    ) {
-        Image(
-            painter = painterResource(id = icon),
-            contentDescription = null,
-            modifier = Modifier
-                .padding(8.dp)
-                .size(32.dp),
-        )
-        Text(
-            text = choice.answer ?: "",
-            textAlign = TextAlign.Center,
-            modifier = Modifier.align(Alignment.Center),
-            color = contrastiveTo(backgroundColor),
-        )
-    }
-}
-
-@Composable
-private fun ChoiceItemRevealed(
-    choice: Choice,
-    index: Int,
-    isSelected: Boolean,
-) {
-    val backgroundColor = when {
-        isSelected && !choice.correct -> Red
-        choice.correct -> Green
-        else -> Pink
-    }
-
-    val icon = if (choice.correct) {
-        DesignR.drawable.ic_correct
-    } else {
-        DesignR.drawable.ic_wrong
-    }
-
-    val alignment = if (index % 2 == 0) {
-        Alignment.TopStart
-    } else {
-        Alignment.TopEnd
-    }
-
-    Box(
-        modifier = Modifier
-            .background(backgroundColor, shape = RoundedCornerShape(4.dp))
-            .height(100.dp),
-    ) {
-        Image(
-            painter = painterResource(icon),
-            contentDescription = null,
-            modifier = Modifier
-                .align(alignment)
-                .offset(
-                    x = if (alignment == Alignment.TopStart) (-8).dp else (8).dp,
-                    (-8).dp,
                 ),
-        )
+                shape = RoundedCornerShape(4.dp),
-        Text(
+                modifier = Modifier.align(Alignment.Center),
-            text = choice.answer ?: "",
+            ) {
-            textAlign = TextAlign.Center,
+                Text(
-            modifier = Modifier.align(Alignment.Center),
+                    text = stringResource(R.string.continue_text),
-            color = contrastiveTo(backgroundColor),
+                )
-        )
+            }
+        }
     }
 }
 
+private fun LazyListScope.choices(
+    uiState: ScreenUiState.Success,
+    onSelect: (Int) -> Unit,
+) {
+    uiState.currentQuestion?.choices?.let { choicesList ->
+        if (choicesList.isNotEmpty()) {
+            item(key = "choices_${uiState.currentQuestionIndex}") {
+                Choices(
+                    choices = choicesList,
+                    selectedChoiceIndex = uiState.selectedChoiceIndex,
+                    onSelect = onSelect,
+                    modifier = Modifier.padding(8.dp),
+                )
+            }
+        }
+    }
+}
 
 @Preview
 @Composable
@@ -340,10 +217,13 @@ private fun QuizScreenPreview() {
             imageMetadata = null,
         )
         QuizScreen(
-            uiState = QuizUiState(
+            uiState = ScreenUiState.Success(
                 currentQuestion = sampleQuestion,
+                selectedChoiceIndex = null,
+                totalQuestions = 12,
             ),
             onSelect = {},
+            onContinue = {},
         )
     }
 }
@@ -368,13 +248,13 @@ private fun QuizScreenRevealedAnswerPreview() {
             imageMetadata = null,
         )
         QuizScreen(
-            uiState = QuizUiState(
+            uiState = ScreenUiState.Success(
                 currentQuestion = sampleQuestion,
-                answer = AnswerUiState(
+                selectedChoiceIndex = 1,
-                    selectedChoiceIndex = 1,
+                totalQuestions = 12,
-                ),
             ),
             onSelect = {},
+            onContinue = {},
         )
     }
 }

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/QuizScreenViewModel.kt

@@ -4,44 +4,154 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import dev.adriankuta.kahootquiz.domain.models.Question
+import dev.adriankuta.kahootquiz.domain.models.Quiz
 import dev.adriankuta.kahootquiz.domain.usecases.GetQuizUseCase
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.asFlow
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 @HiltViewModel
 class QuizScreenViewModel @Inject constructor(
     private val getQuizUseCase: GetQuizUseCase,
 ) : ViewModel() {
-    private val _selectedChoiceIndex = MutableStateFlow<Int?>(null)
+
-    val uiState: StateFlow<QuizUiState> = combine(
+    private val quiz: StateFlow<QuizUiState> = flow {
-        suspend { getQuizUseCase() }.asFlow(),
+        emit(QuizUiState.Success(getQuizUseCase()))
-        _selectedChoiceIndex,
+    }
-    ) { quiz, selectedChoiceIndex ->
+        .stateIn(
-        QuizUiState(
+            scope = viewModelScope,
-            currentQuestion = quiz.questions.first(),
+            started = SharingStarted.WhileSubscribed(5_000),
-            answer = selectedChoiceIndex?.let { AnswerUiState(it) },
+            initialValue = QuizUiState.Loading,
+        )
+    private val _selectedChoiceIndex = MutableStateFlow<Int?>(null)
+    private val _remainingTimeSeconds = MutableStateFlow(0)
+    private val _currentQuestionIndex = MutableStateFlow(0)
+    private var timerJob: Job? = null
+
+    init {
+        // Start timer when the first question is displayed (on initial quiz load)
+        viewModelScope.launch {
+            quiz.collect { quizState ->
+                if (quizState is QuizUiState.Success) {
+                    // Start only if timer hasn't been started yet and we are on the first question
+                    if (timerJob == null && _currentQuestionIndex.value == 0) {
+                        val firstQuestionTime =
+                            quizState.quiz.questions.getOrNull(0)?.time?.inWholeSeconds?.toInt()
+                        startCountdown(firstQuestionTime)
+                    }
+                }
+            }
+        }
+    }
+
+    val uiState: StateFlow<ScreenUiState> = combine(
+        quiz,
+        _selectedChoiceIndex,
+        _remainingTimeSeconds,
+        _currentQuestionIndex,
+    ) { quizState, selectedChoiceIndex, remainingTimeSeconds, currentQuestionIndex ->
+        when (quizState) {
+            QuizUiState.Loading -> ScreenUiState.Loading
+            is QuizUiState.Success -> {
+                val currentQuestion = quizState.quiz.questions.getOrNull(currentQuestionIndex)
+
+                ScreenUiState.Success(
+                    currentQuestion = currentQuestion,
+                    selectedChoiceIndex = selectedChoiceIndex,
+                    currentQuestionIndex = currentQuestionIndex,
+                    totalQuestions = quizState.quiz.questions.size,
+                    timerState = TimerState(
+                        remainingTimeSeconds = remainingTimeSeconds,
+                        totalTimeSeconds = currentQuestion?.time?.inWholeSeconds?.toInt() ?: 0,
+                    ),
+                )
+            }
+        }
+
+    }
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5_000),
+            initialValue = ScreenUiState.Loading,
         )
-    }.stateIn(
-        scope = viewModelScope,
-        started = SharingStarted.WhileSubscribed(5000),
-        initialValue = QuizUiState(),
-    )
 
     fun onChoiceSelected(index: Int) {
+        timerJob?.cancel()
+        timerJob = null
         _selectedChoiceIndex.value = index
     }
+
+    fun onContinue() {
+        val quizState = quiz.value
+        if (quizState is QuizUiState.Success) {
+            val total = quizState.quiz.questions.size
+            val current = _currentQuestionIndex.value
+            val nextIndex = current + 1
+            if (nextIndex < total) {
+                _selectedChoiceIndex.value = null
+                _currentQuestionIndex.value = nextIndex
+                val nextQuestionTime =
+                    quizState.quiz.questions[nextIndex].time?.inWholeSeconds?.toInt()
+                startCountdown(nextQuestionTime)
+            } else {
+                // Last question reached: stop timer and keep state (could navigate to results in the future)
+                timerJob?.cancel()
+                timerJob = null
+                _remainingTimeSeconds.value = 0
+            }
+        }
+    }
+
+    private fun startCountdown(totalSeconds: Int?) {
+        timerJob?.cancel()
+        if (totalSeconds == null || totalSeconds <= 0) {
+            _remainingTimeSeconds.value = 0
+            timerJob = null
+            return
+        }
+        _remainingTimeSeconds.value = totalSeconds
+        timerJob = viewModelScope.launch {
+            var remaining = totalSeconds
+            while (remaining > 0) {
+                delay(1000)
+                remaining -= 1
+                _remainingTimeSeconds.value = remaining
+            }
+            // Time out: reveal answers without a selection
+            if (_selectedChoiceIndex.value == null) {
+                _selectedChoiceIndex.value = -1
+            }
+            timerJob = null
+        }
+    }
 }
 
-data class QuizUiState(
+sealed interface QuizUiState {
-    val currentQuestion: Question? = null,
+    data object Loading : QuizUiState
-    val answer: AnswerUiState? = null,
+    data class Success(
-)
+        val quiz: Quiz,
+    ) : QuizUiState
+}
 
-data class AnswerUiState(
+sealed interface ScreenUiState {
-    val selectedChoiceIndex: Int,
+    data object Loading : ScreenUiState
+    data class Success(
+        val currentQuestion: Question? = null,
+        val selectedChoiceIndex: Int? = null,
+        val currentQuestionIndex: Int = 0,
+        val totalQuestions: Int = 0,
+        val timerState: TimerState = TimerState(),
+    ) : ScreenUiState
+}
+
+data class TimerState(
+    val remainingTimeSeconds: Int = 0,
+    val totalTimeSeconds: Int = 0,
 )

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/components/Choices.kt

@@ -0,0 +1,175 @@
+package dev.adriankuta.kahootquiz.ui.quiz.components
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import dev.adriankuta.kahootquiz.core.designsystem.Blue2
+import dev.adriankuta.kahootquiz.core.designsystem.Green
+import dev.adriankuta.kahootquiz.core.designsystem.Green2
+import dev.adriankuta.kahootquiz.core.designsystem.Pink
+import dev.adriankuta.kahootquiz.core.designsystem.Red
+import dev.adriankuta.kahootquiz.core.designsystem.Red2
+import dev.adriankuta.kahootquiz.core.designsystem.Yellow3
+import dev.adriankuta.kahootquiz.core.designsystem.contrastiveTo
+import dev.adriankuta.kahootquiz.domain.models.Choice
+import dev.adriankuta.kahootquiz.core.designsystem.R as DesignR
+
+@Composable
+fun Choices(
+    choices: List<Choice>,
+    onSelect: (Int) -> Unit,
+    selectedChoiceIndex: Int?,
+    modifier: Modifier = Modifier,
+) {
+    FlowRow(
+        maxItemsInEachRow = 2,
+        modifier = modifier,
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        verticalArrangement = Arrangement.spacedBy(8.dp),
+    ) {
+        choices.forEachIndexed { index, choice ->
+            ChoiceItem(
+                choice = choice,
+                index = index,
+                selectedChoiceIndex = selectedChoiceIndex,
+                onClick = { onSelect(index) },
+                modifier = Modifier.weight(1f),
+            )
+        }
+    }
+}
+
+@Composable
+private fun ChoiceItem(
+    choice: Choice,
+    onClick: () -> Unit,
+    index: Int,
+    selectedChoiceIndex: Int?,
+    modifier: Modifier = Modifier,
+) {
+    if (selectedChoiceIndex != null) {
+        ChoiceItemRevealed(
+            choice = choice,
+            index = index,
+            isSelected = selectedChoiceIndex == index,
+            modifier = modifier,
+        )
+    } else {
+        ChoiceItemDefault(
+            choice = choice,
+            index = index,
+            onClick = onClick,
+            modifier = modifier,
+        )
+    }
+}
+
+@Composable
+private fun ChoiceItemDefault(
+    choice: Choice,
+    index: Int,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val backgroundColor = when (index) {
+        0 -> Red2
+        1 -> Blue2
+        2 -> Yellow3
+        3 -> Green2
+        else -> Color.Gray
+    }
+
+    val icon = when (index) {
+        0 -> DesignR.drawable.ic_triangle
+        1 -> DesignR.drawable.ic_diamond
+        2 -> DesignR.drawable.ic_circle
+        else -> DesignR.drawable.ic_square
+    }
+    Box(
+        modifier = modifier
+            .background(backgroundColor, shape = RoundedCornerShape(4.dp))
+            .height(100.dp)
+            .clickable(
+                onClick = onClick,
+            ),
+    ) {
+        Image(
+            painter = painterResource(id = icon),
+            contentDescription = null,
+            modifier = Modifier
+                .padding(8.dp)
+                .size(32.dp),
+        )
+        Text(
+            text = choice.answer ?: "",
+            textAlign = TextAlign.Center,
+            modifier = Modifier.align(Alignment.Center),
+            color = contrastiveTo(backgroundColor),
+        )
+    }
+}
+
+@Composable
+private fun ChoiceItemRevealed(
+    choice: Choice,
+    index: Int,
+    isSelected: Boolean,
+    modifier: Modifier = Modifier,
+) {
+    val backgroundColor = when {
+        isSelected && !choice.correct -> Red
+        choice.correct -> Green
+        else -> Pink
+    }
+
+    val icon = if (choice.correct) {
+        DesignR.drawable.ic_correct
+    } else {
+        DesignR.drawable.ic_wrong
+    }
+
+    val alignment = if (index % 2 == 0) {
+        Alignment.TopStart
+    } else {
+        Alignment.TopEnd
+    }
+
+    Box(
+        modifier = modifier
+            .background(backgroundColor, shape = RoundedCornerShape(4.dp))
+            .height(100.dp),
+    ) {
+        Image(
+            painter = painterResource(icon),
+            contentDescription = null,
+            modifier = Modifier
+                .align(alignment)
+                .offset(
+                    x = if (alignment == Alignment.TopStart) (-8).dp else (8).dp,
+                    y = (-8).dp,
+                ),
+        )
+        Text(
+            text = choice.answer ?: "",
+            textAlign = TextAlign.Center,
+            modifier = Modifier.align(Alignment.Center),
+            color = contrastiveTo(backgroundColor),
+        )
+    }
+}

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/components/QuestionContent.kt

@@ -0,0 +1,60 @@
+package dev.adriankuta.kahootquiz.ui.quiz.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.core.text.HtmlCompat
+import coil3.compose.AsyncImage
+import dev.adriankuta.kahootquiz.core.designsystem.toAnnotatedString
+import dev.adriankuta.kahootquiz.domain.models.Question
+
+@Composable
+fun QuestionContent(
+    question: Question,
+    modifier: Modifier = Modifier,
+) {
+    Column(
+        modifier = modifier,
+    ) {
+        AsyncImage(
+            model = question.image,
+            contentDescription = question.imageMetadata?.altText,
+            contentScale = ContentScale.FillWidth,
+            modifier = Modifier
+                .fillMaxWidth()
+                .heightIn(min = 200.dp)
+                .clip(shape = RoundedCornerShape(4.dp)),
+        )
+        Spacer(Modifier.height(16.dp))
+        val questionText = androidx.compose.runtime.remember(question.question) {
+            HtmlCompat.fromHtml(
+                question.question ?: "",
+                HtmlCompat.FROM_HTML_MODE_COMPACT,
+            ).toAnnotatedString()
+        }
+        Text(
+            text = questionText,
+            textAlign = TextAlign.Center,
+            modifier = Modifier
+                .fillMaxWidth()
+                .background(
+                    color = Color.White,
+                    shape = RoundedCornerShape(4.dp),
+                )
+                .padding(horizontal = 8.dp, vertical = 16.dp),
+        )
+    }
+}

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/components/TimerBar.kt

@@ -0,0 +1,50 @@
+package dev.adriankuta.kahootquiz.ui.quiz.components
+
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import dev.adriankuta.kahootquiz.core.designsystem.Purple
+
+@Composable
+fun TimerBar(
+    totalSeconds: Int,
+    remainingSeconds: Int,
+    modifier: Modifier = Modifier,
+) {
+    val target =
+        if (totalSeconds <= 0) 0f else (remainingSeconds.toFloat() / totalSeconds).coerceIn(0f, 1f)
+    val progress: Float by animateFloatAsState(
+        targetValue = target,
+        label = "Timer",
+        animationSpec = tween(durationMillis = 1000, easing = LinearEasing),
+    )
+
+    Box(
+        modifier = modifier
+            .fillMaxWidth(progress.coerceIn(0f, 1f))
+            .background(
+                color = Purple,
+                shape = RoundedCornerShape(percent = 50),
+            ),
+    ) {
+        Text(
+            text = "$remainingSeconds",
+            modifier = Modifier
+                .align(Alignment.CenterEnd)
+                .padding(end = 8.dp),
+            color = Color.White,
+        )
+    }
+}

ui/quiz/src/main/kotlin/dev/adriankuta/kahootquiz/ui/quiz/components/Toolbar.kt

@@ -0,0 +1,63 @@
+package dev.adriankuta.kahootquiz.ui.quiz.components
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import dev.adriankuta.kahootquiz.core.designsystem.Grey
+import dev.adriankuta.kahootquiz.ui.quiz.R
+import dev.adriankuta.kahootquiz.core.designsystem.R as DesignR
+
+@Composable
+fun Toolbar(
+    modifier: Modifier = Modifier,
+    currentQuestionIndex: Int = 0,
+    totalQuestions: Int = 0,
+) {
+    Box(
+        modifier = modifier,
+    ) {
+        Text(
+            text = "${currentQuestionIndex + 1}/$totalQuestions",
+            modifier = Modifier
+                .align(Alignment.CenterStart)
+                .background(
+                    color = Grey,
+                    shape = RoundedCornerShape(percent = 50),
+                )
+                .padding(horizontal = 8.dp, vertical = 4.dp),
+        )
+
+        Row(
+            modifier = Modifier
+                .align(Alignment.Center)
+                .background(
+                    color = Grey,
+                    shape = RoundedCornerShape(percent = 50),
+                )
+                .padding(horizontal = 8.dp, vertical = 4.dp),
+        ) {
+            Image(
+                painter = painterResource(id = DesignR.drawable.ic_type),
+                contentDescription = null,
+                modifier = Modifier.size(24.dp),
+            )
+            Spacer(Modifier.width(4.dp))
+            Text(
+                text = stringResource(R.string.quiz),
+            )
+        }
+    }
+}

ui/quiz/src/main/res/values/strings.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="quiz">Quiz</string>
+    <string name="continue_text">Continue</string>
 </resources>