refactor (start chat) : start splitting things (create room, invite people, start chat)

features/startchat/api/build.gradle.kts

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2023, 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.features.startchat.api"
+}
+
+dependencies {
+    implementation(projects.libraries.architecture)
+    implementation(projects.libraries.matrix.api)
+}

features/startchat/api/src/main/kotlin/io/element/android/features/startchat/api/ConfirmingStartDmWithMatrixUser.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.features.startchat.api
+
+import io.element.android.libraries.architecture.AsyncAction
+import io.element.android.libraries.matrix.api.user.MatrixUser
+
+data class ConfirmingStartDmWithMatrixUser(
+    val matrixUser: MatrixUser,
+) : AsyncAction.Confirming

features/startchat/api/src/main/kotlin/io/element/android/features/startchat/api/StartChatEntryPoint.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2023, 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.features.startchat.api
+
+import com.bumble.appyx.core.modality.BuildContext
+import com.bumble.appyx.core.node.Node
+import com.bumble.appyx.core.plugin.Plugin
+import io.element.android.libraries.architecture.FeatureEntryPoint
+import io.element.android.libraries.matrix.api.core.RoomIdOrAlias
+
+interface StartChatEntryPoint : FeatureEntryPoint {
+    fun nodeBuilder(parentNode: Node, buildContext: BuildContext): NodeBuilder
+    interface NodeBuilder {
+        fun callback(callback: Callback): NodeBuilder
+        fun build(): Node
+    }
+
+    interface Callback : Plugin {
+        fun onOpenRoom(roomIdOrAlias: RoomIdOrAlias, serverNames: List<String>)
+        fun onOpenRoomDirectory()
+    }
+}

features/startchat/api/src/main/kotlin/io/element/android/features/startchat/api/StartDMAction.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2023, 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.features.startchat.api
+
+import androidx.compose.runtime.MutableState
+import io.element.android.libraries.architecture.AsyncAction
+import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.user.MatrixUser
+
+interface StartDMAction {
+    /**
+     * Try to find an existing DM with the given user, or create one if none exists.
+     * @param matrixUser The user to start a DM with.
+     * @param createIfDmDoesNotExist If true, create a DM if one does not exist. If false and the DM
+     * does not exist, the action will fail with the value [ConfirmingStartDmWithMatrixUser].
+     * @param actionState The state to update with the result of the action.
+     */
+    suspend fun execute(
+        matrixUser: MatrixUser,
+        createIfDmDoesNotExist: Boolean,
+        actionState: MutableState<AsyncAction<RoomId>>,
+    )
+}