add Firestore.collectionGroup

Author: nbransby

firebase-common/src/jsMain/kotlin/dev/gitlive/firebase/externals.kt

@@ -339,6 +339,7 @@ external object firebase {
             fun <T> runTransaction(func: (transaction: Transaction) -> Promise<T>): Promise<T>
             fun batch(): WriteBatch
             fun collection(collectionPath: String): CollectionReference
+            fun collectionGroup(collectionId: String): Query
             fun doc(documentPath: String): DocumentReference
             fun settings(settings: Json)
             fun enablePersistence(): Promise<Unit>

firebase-firestore/src/androidMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -40,6 +40,8 @@ actual class FirebaseFirestore(val android: com.google.firebase.firestore.Fireba
 
     actual fun collection(collectionPath: String) = CollectionReference(android.collection(collectionPath))
 
+    actual fun collectionGroup(collectionId: String) = Query(android.collectionGroup(collectionId))
+
     actual fun document(documentPath: String) = DocumentReference(android.document(documentPath))
 
     actual fun batch() = WriteBatch(android.batch())

firebase-firestore/src/commonMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -20,6 +20,7 @@ expect fun Firebase.firestore(app: FirebaseApp): FirebaseFirestore
 
 expect class FirebaseFirestore {
     fun collection(collectionPath: String): CollectionReference
+    fun collectionGroup(collectionId: String): Query
     fun document(documentPath: String): DocumentReference
     fun batch(): WriteBatch
     fun setLoggingEnabled(loggingEnabled: Boolean)

firebase-firestore/src/iosMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -42,6 +42,8 @@ actual class FirebaseFirestore(val ios: FIRFirestore) {
 
     actual fun collection(collectionPath: String) = CollectionReference(ios.collectionWithPath(collectionPath))
 
+    actual fun collectionGroup(collectionId: String) = Query(ios.collectionGroupWithId(collectionId))
+
     actual fun document(documentPath: String) = DocumentReference(ios.documentWithPath(documentPath))
 
     actual fun batch() = WriteBatch(ios.batch())

firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -38,6 +38,8 @@ actual class FirebaseFirestore(val js: firebase.firestore.Firestore) {
 
     actual fun collection(collectionPath: String) = rethrow { CollectionReference(js.collection(collectionPath)) }
 
+    actual fun collectionGroup(collectionId: String) = Query(js.collectionGroup(collectionId))
+
     actual fun document(documentPath: String) = rethrow { DocumentReference(js.doc(documentPath)) }
 
     actual fun batch() = rethrow { WriteBatch(js.batch()) }