feat(deeplink): point deeplinks at HealthChat hosts

Claims app.healthchat.ch and to.healthchat.ch as App Links, registers the
healthchat:// scheme, and drops the unreachable mobile.element.io handling.

features/login/impl/src/main/kotlin/io/element/android/features/login/impl/DefaultLoginIntentResolver.kt

@@ -8,23 +8,18 @@
 
 package io.element.android.features.login.impl
 
-import androidx.core.net.toUri
 import dev.zacsweers.metro.AppScope
 import dev.zacsweers.metro.ContributesBinding
 import io.element.android.features.login.api.LoginIntentResolver
 import io.element.android.features.login.api.LoginParams
 
+/**
+ * HealthChat does not support mobile configuration links: the account provider is fixed to the
+ * HealthChat homeserver (see DefaultEnterpriseService.defaultHomeserverList), so there is nothing
+ * for such a link to configure. The matching intent-filter has been removed from the manifest as
+ * well, which means nothing can deliver such an intent in the first place.
+ */
 @ContributesBinding(AppScope::class)
 class DefaultLoginIntentResolver : LoginIntentResolver {
-    override fun parse(uriString: String): LoginParams? {
-        val uri = uriString.toUri()
-        if (uri.host != "mobile.element.io") return null
-        if (uri.path.orEmpty().startsWith("/element").not()) return null
-        val accountProvider = uri.getQueryParameter("account_provider") ?: return null
-        val loginHint = uri.getQueryParameter("login_hint")
-        return LoginParams(
-            accountProvider = accountProvider,
-            loginHint = loginHint,
-        )
-    }
+    override fun parse(uriString: String): LoginParams? = null
 }

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/DefaultLoginIntentResolverTest.kt

@@ -9,72 +9,20 @@
 package io.element.android.features.login.impl
 
 import com.google.common.truth.Truth.assertThat
-import io.element.android.features.login.api.LoginParams
 import io.element.android.tests.testutils.robolectric.RobolectricTest
 import org.junit.Test
 
 class DefaultLoginIntentResolverTest : RobolectricTest() {
     @Test
-    fun `nominal case`() {
+    fun `mobile configuration links are not supported`() {
         val sut = DefaultLoginIntentResolver()
         val uriString = "https://mobile.element.io/element/?account_provider=example.org&login_hint=mxid:@alice:example.org"
-        assertThat(sut.parse(uriString)).isEqualTo(
-            LoginParams(
-                accountProvider = "example.org",
-                loginHint = "mxid:@alice:example.org",
-            )
-        )
-    }
-
-    @Test
-    fun `extra unknown param`() {
-        val sut = DefaultLoginIntentResolver()
-        val uriString = "https://mobile.element.io/element/?account_provider=example.org&login_hint=mxid:@alice:example.org&extra=uknown"
-        assertThat(sut.parse(uriString)).isEqualTo(
-            LoginParams(
-                accountProvider = "example.org",
-                loginHint = "mxid:@alice:example.org",
-            )
-        )
-    }
-
-    @Test
-    fun `no account provider`() {
-        val sut = DefaultLoginIntentResolver()
-        val uriString = "https://mobile.element.io/element/?login_hint=mxid:@alice:example.org"
         assertThat(sut.parse(uriString)).isNull()
     }
 
     @Test
-    fun `no path`() {
+    fun `an arbitrary uri returns null`() {
         val sut = DefaultLoginIntentResolver()
-        val uriString = "https://mobile.element.io?account_provider=example.org&login_hint=mxid:@alice:example.org"
-        assertThat(sut.parse(uriString)).isNull()
-    }
-
-    @Test
-    fun `wrong path`() {
-        val sut = DefaultLoginIntentResolver()
-        val uriString = "https://mobile.element.io/wrong?account_provider=example.org&login_hint=mxid:@alice:example.org"
-        assertThat(sut.parse(uriString)).isNull()
-    }
-
-    @Test
-    fun `wrong host`() {
-        val sut = DefaultLoginIntentResolver()
-        val uriString = "https://wrong.element.io/element/?account_provider=example.org&login_hint=mxid:@alice:example.org"
-        assertThat(sut.parse(uriString)).isNull()
-    }
-
-    @Test
-    fun `no login_hint param`() {
-        val sut = DefaultLoginIntentResolver()
-        val uriString = "https://mobile.element.io/element/?account_provider=example.org"
-        assertThat(sut.parse(uriString)).isEqualTo(
-            LoginParams(
-                accountProvider = "example.org",
-                loginHint = null,
-            )
-        )
+        assertThat(sut.parse("https://app.healthchat.ch/#/room/#room:healthchat.ch")).isNull()
     }
 }