fix(widget): Persist theme settings across device reboot

Closes #549
2026-09-15 02:36:12 -04:00 · 2026-04-25 20:39:40 +02:00
parent a40599c1dc
commit 97f294e5f7
8 changed files with 253 additions and 62 deletions
@@ -0,0 +1,130 @@
+package eu.darken.capod.main.ui.widget
+
+import io.kotest.matchers.nulls.shouldNotBeNull
+import io.kotest.matchers.shouldBe
+import kotlinx.serialization.json.Json
+import org.junit.jupiter.api.Test
+import testhelpers.BaseTest
+
+class WidgetConfigSerializationTest : BaseTest() {
+
+    private val json = Json {
+        ignoreUnknownKeys = true
+        encodeDefaults = true
+        explicitNulls = false
+    }
+
+    @Test
+    fun `default config round-trip`() {
+        val original = WidgetConfig()
+        val encoded = json.encodeToString(WidgetConfig.serializer(), original)
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), encoded)
+
+        decoded shouldBe original
+    }
+
+    @Test
+    fun `dark preset with full transparency round-trip`() {
+        val original = WidgetConfig(
+            profileId = "profile-123",
+            theme = WidgetTheme(
+                backgroundColor = WidgetTheme.Preset.CLASSIC_DARK.presetBg,
+                foregroundColor = WidgetTheme.Preset.CLASSIC_DARK.presetFg,
+                backgroundAlpha = 0,
+                showDeviceLabel = false,
+            ),
+        )
+        val encoded = json.encodeToString(WidgetConfig.serializer(), original)
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), encoded)
+
+        decoded shouldBe original
+        decoded.theme.backgroundAlpha shouldBe 0
+        decoded.theme.showDeviceLabel shouldBe false
+    }
+
+    @Test
+    fun `material you theme has null colors`() {
+        val original = WidgetConfig(
+            profileId = "profile-x",
+            theme = WidgetTheme(
+                backgroundColor = null,
+                foregroundColor = null,
+                backgroundAlpha = 128,
+                showDeviceLabel = true,
+            ),
+        )
+        val encoded = json.encodeToString(WidgetConfig.serializer(), original)
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), encoded)
+
+        decoded.theme.backgroundColor shouldBe null
+        decoded.theme.foregroundColor shouldBe null
+    }
+
+    @Test
+    fun `unknown future fields are ignored`() {
+        val futureJson = """
+            {
+                "profileId": "p1",
+                "theme": {
+                    "backgroundAlpha": 200,
+                    "showDeviceLabel": true,
+                    "futureField": "ignored"
+                },
+                "futureTopLevel": 42
+            }
+        """.trimIndent()
+
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), futureJson)
+
+        decoded.profileId shouldBe "p1"
+        decoded.theme.backgroundAlpha shouldBe 200
+        decoded.theme.showDeviceLabel shouldBe true
+    }
+
+    @Test
+    fun `missing fields fall back to defaults`() {
+        val sparseJson = """{"profileId":"p2","theme":{}}"""
+
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), sparseJson)
+
+        decoded.profileId shouldBe "p2"
+        decoded.theme shouldBe WidgetTheme()
+        decoded.theme.backgroundAlpha shouldBe 255
+        decoded.theme.showDeviceLabel shouldBe true
+    }
+
+    @Test
+    fun `empty json decodes to default config`() {
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), "{}")
+
+        decoded.profileId shouldBe null
+        decoded.theme shouldBe WidgetTheme()
+    }
+
+    @Test
+    fun `profile-only config decodes`() {
+        val encoded = json.encodeToString(
+            WidgetConfig.serializer(),
+            WidgetConfig(profileId = "only-profile"),
+        )
+
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), encoded)
+
+        decoded.profileId shouldBe "only-profile"
+        decoded.theme shouldBe WidgetTheme()
+    }
+
+    @Test
+    fun `theme matches preset after round-trip`() {
+        val original = WidgetConfig(
+            theme = WidgetTheme(
+                backgroundColor = WidgetTheme.Preset.BLUE.presetBg,
+                foregroundColor = WidgetTheme.Preset.BLUE.presetFg,
+            ),
+        )
+        val encoded = json.encodeToString(WidgetConfig.serializer(), original)
+        val decoded = json.decodeFromString(WidgetConfig.serializer(), encoded)
+
+        WidgetTheme.matchPreset(decoded.theme).shouldNotBeNull() shouldBe WidgetTheme.Preset.BLUE
+    }
+}