add change-homepage patch

src/main/kotlin/app/revanced/patches/youtube/layout/navigation/homepage/fingerprints/IntentExceptionFingerprint.kt

@@ -0,0 +1,11 @@
+package app.revanced.patches.youtube.layout.navigation.homepage.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.Opcode
+
+object IntentExceptionFingerprint : MethodFingerprint(
+    returnType = "V",
+    parameters = listOf("L", "L"),
+    opcodes = listOf(Opcode.MOVE_EXCEPTION),
+    strings = listOf("Failed to resolve intent")
+)

src/main/kotlin/app/revanced/patches/youtube/layout/navigation/homepage/fingerprints/LauncherActivityFingerprint.kt

@@ -0,0 +1,8 @@
+package app.revanced.patches.youtube.layout.navigation.homepage.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object LauncherActivityFingerprint : MethodFingerprint(
+    returnType = "V",
+    strings = listOf("forLauncherActivity", "Launcher config used on invalid activity: %s")
+)

src/main/kotlin/app/revanced/patches/youtube/layout/navigation/homepage/patch/ChangeHomePagePatch.kt

@@ -0,0 +1,73 @@
+package app.revanced.patches.youtube.layout.navigation.homepage.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.extensions.instruction
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.util.smali.ExternalLabel
+import app.revanced.patches.shared.annotation.YouTubeCompatibility
+import app.revanced.patches.youtube.layout.navigation.homepage.fingerprints.IntentExceptionFingerprint
+import app.revanced.patches.youtube.layout.navigation.homepage.fingerprints.LauncherActivityFingerprint
+import app.revanced.patches.youtube.misc.settings.resource.patch.SettingsPatch
+import app.revanced.util.integrations.Constants.NAVIGATION
+
+@Patch
+@Name("change-homepage")
+@Description("Change home page to subscription feed.")
+@DependsOn([SettingsPatch::class])
+@YouTubeCompatibility
+@Version("0.0.1")
+class ChangeHomePagePatch : BytecodePatch(
+    listOf(
+        IntentExceptionFingerprint,
+        LauncherActivityFingerprint
+    )
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+
+        LauncherActivityFingerprint.result?.mutableMethod?.let {
+            it.addInstructions(
+                it.implementation!!.instructions.size - 1, """
+                    move-object/from16 v0, p1
+                    invoke-static {v0}, $NAVIGATION->changeHomePage(Lcom/google/android/apps/youtube/app/watchwhile/WatchWhileActivity;)V
+                """
+            )
+        } ?: return LauncherActivityFingerprint.toErrorResult()
+
+        IntentExceptionFingerprint.result?.let {
+            with (it.mutableMethod) {
+                val index = it.scanResult.patternScanResult!!.endIndex + 1
+                addInstructions(
+                    index, """
+                    invoke-static {}, $NAVIGATION->changeHomePage()Z
+                    move-result v0
+                    if-eqz v0, :default
+                    return-void
+                    """, listOf(ExternalLabel("default", instruction(index)))
+                )
+            }
+        } ?: return IntentExceptionFingerprint.toErrorResult()
+
+        /*
+         * Add settings
+         */
+        SettingsPatch.addPreference(
+            arrayOf(
+                "PREFERENCE: NAVIGATION_SETTINGS",
+                "SETTINGS: CHANGE_HOMEPAGE_TO_SUBSCRIPTION"
+            )
+        )
+
+        SettingsPatch.updatePatchStatus("change-homepage")
+
+        return PatchResultSuccess()
+    }
+}

src/main/resources/youtube/settings/host/values/strings.xml

@@ -91,6 +91,9 @@ Is it ready to submit?"</string>
     <string name="revanced_bypass_ambient_mode_restrictions_summary_off">Ambient mode is disabled in battery saver mode</string>
     <string name="revanced_bypass_ambient_mode_restrictions_summary_on">Ambient mode is enabled in battery saver mode</string>
     <string name="revanced_bypass_ambient_mode_restrictions_title">Bypass ambient mode restrictions</string>
+    <string name="revanced_change_homepage_summary_off">Current homepage: Home</string>
+    <string name="revanced_change_homepage_summary_on">Current homepage: Subscriptions</string>
+    <string name="revanced_change_homepage_title">Change homepage to subscriptions</string>
     <string name="revanced_comments_title">Comments</string>
     <string name="revanced_copytimestamp_success">Time Stamp copied to clipboard</string>
     <string name="revanced_custom_seekbar_color_value_summary">Type the hex code of the seekbar color</string>

src/main/resources/youtube/settings/xml/revanced_prefs.xml

@@ -298,6 +298,9 @@
     <PreferenceScreen android:title="@string/revanced_navigation" android:key="navigation">
         <Preference android:title=" " android:selectable="false" android:summary="@string/revanced_navigation" />PREFERENCE: NAVIGATION_SETTINGS -->
 
+        <!-- SETTINGS: CHANGE_HOMEPAGE_TO_SUBSCRIPTION
+        <SwitchPreference android:title="@string/revanced_change_homepage_title" android:key="revanced_change_homepage" android:defaultValue="false" android:summaryOn="@string/revanced_change_homepage_summary_on" android:summaryOff="@string/revanced_change_homepage_summary_off" />SETTINGS: CHANGE_HOMEPAGE_TO_SUBSCRIPTION -->
+
         <!-- SETTINGS: ENABLE_TABLET_NAVIGATION_BAR
         <SwitchPreference android:title="@string/revanced_enable_tablet_navigation_bar_title" android:key="revanced_enable_tablet_navigation_bar" android:defaultValue="false" android:summaryOn="@string/revanced_enable_tablet_navigation_bar_summary_on" android:summaryOff="@string/revanced_enable_tablet_navigation_bar_summary_off" />SETTINGS: ENABLE_TABLET_NAVIGATION_BAR -->
 
@@ -495,6 +498,7 @@
             <Preference android:title="hide-flyout-panel" android:summary="@string/revanced_patches_excluded" android:selectable="false"/>
 
             <Preference android:title=" " android:selectable="false" android:summary="@string/revanced_navigation" />
+            <Preference android:title="change-homepage" android:summary="@string/revanced_patches_excluded" android:selectable="false"/>
             <Preference android:title="enable-tablet-navigation-bar" android:summary="@string/revanced_patches_excluded" android:selectable="false"/>
             <Preference android:title="switch-create-notification" android:summary="@string/revanced_patches_excluded" android:selectable="false"/>
             <Preference android:title="hide-create-button" android:summary="@string/revanced_patches_excluded" android:selectable="false"/>