feat: Update checked, with support for stable and snapshot builds

feat: Show launchy version in top bar

gradle.properties

@@ -1,3 +1,3 @@
 group=com.mineinabyss
-version=2.0.0-beta.1
+version=2.0.0-beta.2
 idofrontVersion=0.24.3

src/main/kotlin/com/mineinabyss/launchy/data/Constants.kt

@@ -5,4 +5,7 @@ import androidx.compose.ui.unit.dp
 object Constants {
     val SETTINGS_HORIZONTAL_PADDING = 10.dp
     val SETTINGS_PRIMARY_BUTTON_WIDTH = 140.dp
+
+    val APP_VERSION = System.getProperty("jpackage.app-version") ?: null
+    val GITHUB_REPO = "MineInAbyss/launchy"
 }

src/main/kotlin/com/mineinabyss/launchy/logic/GithubUpdateChecker.kt

@@ -0,0 +1,57 @@
+package com.mineinabyss.launchy.logic
+
+import com.mineinabyss.launchy.data.Constants
+import com.mineinabyss.launchy.data.Formats
+import io.ktor.client.request.*
+import io.ktor.client.statement.*
+import io.ktor.http.*
+import kotlinx.serialization.Serializable
+
+sealed interface AppUpdateState {
+    data object Unknown : AppUpdateState
+    data object NoUpdate : AppUpdateState
+    data class UpdateAvailable(val release: GithubRelease) : AppUpdateState
+}
+
+object GithubUpdateChecker {
+    suspend fun checkForUpdates(): AppUpdateState = runCatching {
+        val currVersion = Constants.APP_VERSION ?: return AppUpdateState.Unknown
+        val currTag = "v$currVersion"
+        val current = Downloader.httpClient.get {
+            url("https://api.github.com/repos/${Constants.GITHUB_REPO}/releases/tags/$currTag")
+        }
+        val currentRelease = if (current.status != HttpStatusCode.OK) null
+        else Formats.json.decodeFromString<GithubRelease>(current.bodyAsText())
+
+        val latest = if (currentRelease?.prerelease == true) getLatestPrerelease()
+        else getLatestStableRelease()
+        println("Current $currentRelease")
+        println("Latest $latest")
+        return if (latest.tag_name == currTag) AppUpdateState.NoUpdate else AppUpdateState.UpdateAvailable(latest)
+    }.getOrDefault(AppUpdateState.Unknown)
+
+    suspend fun getLatestPrerelease(): GithubRelease {
+        val response = Downloader.httpClient.get {
+            url("https://api.github.com/repos/${Constants.GITHUB_REPO}/releases")
+        }
+
+        val releases = Formats.json.decodeFromString<List<GithubRelease>>(response.bodyAsText())
+        return releases.maxBy { it.published_at }
+    }
+
+    suspend fun getLatestStableRelease(): GithubRelease {
+        val response = Downloader.httpClient.get {
+            url("https://api.github.com/repos/${Constants.GITHUB_REPO}/releases/latest")
+        }
+        return Formats.json.decodeFromString<GithubRelease>(response.bodyAsText())
+    }
+}
+
+
+@Serializable
+data class GithubRelease(
+    val published_at: String,
+    val tag_name: String,
+    val html_url: String,
+    val prerelease: Boolean,
+)

src/main/kotlin/com/mineinabyss/launchy/ui/TopBar.kt

@@ -27,6 +27,7 @@ import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.WindowPlacement
 import com.mineinabyss.launchy.LocalLaunchyState
+import com.mineinabyss.launchy.data.Constants
 import com.mineinabyss.launchy.ui.elements.BetterWindowDraggableArea
 import com.mineinabyss.launchy.ui.state.TopBarState
 
@@ -128,7 +129,7 @@ fun LaunchyTitle() {
             tint = MaterialTheme.colorScheme.primary
         )
         Text(
-            "Launchy",
+            "Launchy - ${Constants.APP_VERSION ?: "dev"}",
             fontWeight = FontWeight.Medium,
             color = MaterialTheme.colorScheme.primary
         )

src/main/kotlin/com/mineinabyss/launchy/ui/screens/Screens.kt

@@ -5,13 +5,18 @@ import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.LinearProgressIndicator
 import androidx.compose.material.LocalTextStyle
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.Update
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
 import com.mineinabyss.launchy.LocalLaunchyState
+import com.mineinabyss.launchy.logic.AppUpdateState
+import com.mineinabyss.launchy.logic.DesktopHelpers
+import com.mineinabyss.launchy.logic.GithubUpdateChecker
 import com.mineinabyss.launchy.state.InProgressTask
 import com.mineinabyss.launchy.state.modpack.GameInstanceState
 import com.mineinabyss.launchy.ui.AppTopBar
@@ -31,6 +36,7 @@ import com.mineinabyss.launchy.ui.state.TopBar
 var screen: Screen by mutableStateOf(Screen.Default)
 
 var dialog: Dialog by mutableStateOf(Dialog.None)
+var updateAvailable: AppUpdateState by mutableStateOf(AppUpdateState.Unknown)
 
 private val ModpackStateProvider = compositionLocalOf<GameInstanceState> { error("No local modpack provided") }
 
@@ -41,7 +47,20 @@ val LocalGameInstanceState: GameInstanceState
 
 @Composable
 fun Screens() = Scaffold(
-    snackbarHost = { SnackbarHost(snackbarHostState) }
+    snackbarHost = { SnackbarHost(snackbarHostState) },
+    floatingActionButton = {
+        val update = updateAvailable
+        Row {
+            AnimatedVisibility(update is AppUpdateState.UpdateAvailable) {
+                if (update !is AppUpdateState.UpdateAvailable) return@AnimatedVisibility
+                ExtendedFloatingActionButton(
+                    text = { Text("Update available") },
+                    icon = { Icon(Icons.Rounded.Update, "") },
+                    onClick = { DesktopHelpers.browse(update.release.html_url) },
+                )
+            }
+        }
+    }
 ) {
     val state = LocalLaunchyState
     val packState = state.instanceState
@@ -66,6 +85,10 @@ fun Screens() = Scaffold(
     LaunchedEffect(isDefault, state.ui.preferHue) {
         if (isDefault) currentHue = state.ui.preferHue
     }
+    LaunchedEffect(Unit) {
+        updateAvailable = GithubUpdateChecker.checkForUpdates()
+    }
+
 
     AppTopBar(
         state = TopBar,