feat: navigation par écrans et accueil avec configuration de partie

sharedUI/src/commonMain/kotlin/com/livrets/App.kt

@@ -1,27 +1,63 @@
 package com.livrets
 
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.WindowInsets
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.safeDrawing
-import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import com.livrets.data.HistoryRepository
+import com.livrets.game.GameConfig
+import com.livrets.game.GameResult
 import com.livrets.theme.AppTheme
+import com.livrets.ui.GameScreen
+import com.livrets.ui.HistoryScreen
+import com.livrets.ui.HomeScreen
+import com.livrets.ui.ResultsScreen
+import kotlinx.coroutines.launch
+import okio.Path.Companion.toPath
+
+sealed interface Screen {
+    data object Home : Screen
+    data class Game(val config: GameConfig) : Screen
+    data class Results(val result: GameResult) : Screen
+    data object History : Screen
+}
 
 @Composable
 fun App(
     filesDirPath: String,
     onThemeChanged: @Composable (isDark: Boolean) -> Unit = {},
 ) = AppTheme(onThemeChanged) {
-    Box(
-        modifier = Modifier
-            .fillMaxSize()
-            .windowInsetsPadding(WindowInsets.safeDrawing),
-        contentAlignment = Alignment.Center,
-    ) {
-        Text("Livrets")
+    val scope = rememberCoroutineScope()
+    val history = remember { HistoryRepository("$filesDirPath/history.json".toPath()) }
+    var screen by remember { mutableStateOf<Screen>(Screen.Home) }
+
+    when (val current = screen) {
+        Screen.Home -> HomeScreen(
+            onPlay = { config -> screen = Screen.Game(config) },
+            onHistory = { screen = Screen.History },
+        )
+
+        is Screen.Game -> GameScreen(
+            config = current.config,
+            scope = scope,
+            onFinish = { result ->
+                screen = Screen.Results(result)
+                scope.launch { history.save(result) }
+            },
+            onQuit = { screen = Screen.Home },
+        )
+
+        is Screen.Results -> ResultsScreen(
+            result = current.result,
+            onReplay = { screen = Screen.Game(current.result.config) },
+            onHome = { screen = Screen.Home },
+        )
+
+        Screen.History -> HistoryScreen(
+            history = history,
+            onBack = { screen = Screen.Home },
+        )
     }
 }

sharedUI/src/commonMain/kotlin/com/livrets/ui/GameScreen.kt

@@ -0,0 +1,21 @@
+package com.livrets.ui
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.livrets.game.GameConfig
+import com.livrets.game.GameResult
+import kotlinx.coroutines.CoroutineScope
+
+@Composable
+fun GameScreen(
+    config: GameConfig,
+    scope: CoroutineScope,
+    onFinish: (GameResult) -> Unit,
+    onQuit: () -> Unit,
+) {
+    Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) { Text("Jeu") }
+}

sharedUI/src/commonMain/kotlin/com/livrets/ui/HistoryScreen.kt

@@ -0,0 +1,14 @@
+package com.livrets.ui
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.livrets.data.HistoryRepository
+
+@Composable
+fun HistoryScreen(history: HistoryRepository, onBack: () -> Unit) {
+    Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) { Text("Historique") }
+}

sharedUI/src/commonMain/kotlin/com/livrets/ui/HomeScreen.kt

@@ -0,0 +1,88 @@
+package com.livrets.ui
+
+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.WindowInsets
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.safeDrawing
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.windowInsetsPadding
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.livrets.game.GameConfig
+
+@Composable
+fun HomeScreen(
+    onPlay: (GameConfig) -> Unit,
+    onHistory: () -> Unit,
+) {
+    var questionCount by remember { mutableStateOf(10) }
+    var secondsPerQuestion by remember { mutableStateOf(10) }
+    var maxTable by remember { mutableStateOf(12) }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .windowInsetsPadding(WindowInsets.safeDrawing)
+            .padding(24.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.Center,
+    ) {
+        Text("Livrets", style = MaterialTheme.typography.displayMedium)
+        Spacer(Modifier.height(32.dp))
+
+        StepperRow("Nombre de questions", questionCount, 5..50, step = 5) { questionCount = it }
+        StepperRow("Secondes par question", secondsPerQuestion, 3..30, step = 1) { secondsPerQuestion = it }
+        StepperRow("Jusqu'à la table de", maxTable, 1..12, step = 1) { maxTable = it }
+
+        Spacer(Modifier.height(32.dp))
+        Button(
+            onClick = { onPlay(GameConfig(questionCount, secondsPerQuestion, maxTable)) },
+            modifier = Modifier.fillMaxWidth().height(56.dp),
+        ) {
+            Text("Jouer", fontSize = 20.sp)
+        }
+        TextButton(onClick = onHistory) { Text("Historique") }
+    }
+}
+
+@Composable
+private fun StepperRow(
+    label: String,
+    value: Int,
+    range: IntRange,
+    step: Int,
+    onChange: (Int) -> Unit,
+) {
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp),
+    ) {
+        Text(label, modifier = Modifier.weight(1f))
+        TextButton(onClick = { onChange((value - step).coerceAtLeast(range.first)) }) { Text("−") }
+        Text(
+            text = "$value",
+            modifier = Modifier.width(48.dp),
+            textAlign = TextAlign.Center,
+            style = MaterialTheme.typography.titleMedium,
+        )
+        TextButton(onClick = { onChange((value + step).coerceAtMost(range.last)) }) { Text("+") }
+    }
+}

sharedUI/src/commonMain/kotlin/com/livrets/ui/ResultsScreen.kt

@@ -0,0 +1,14 @@
+package com.livrets.ui
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.livrets.game.GameResult
+
+@Composable
+fun ResultsScreen(result: GameResult, onReplay: () -> Unit, onHome: () -> Unit) {
+    Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) { Text("Résultats") }
+}