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Merge pull request #32 from SwEnt-Group13/chore/firestore
Chore/firestore
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5 changes: 4 additions & 1 deletion
5
app/src/main/java/com/android/unio/model/association/Association.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,10 +1,13 @@ | ||
| package com.android.unio.model.association | ||
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| import com.android.unio.model.firestore.FirestoreReferenceList | ||
| import com.android.unio.model.user.User | ||
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| data class Association( | ||
| val uid: String, | ||
| val url: String = "", | ||
| val acronym: String = "", | ||
| val fullName: String = "", | ||
| val description: String = "", | ||
| val members: List<String> = emptyList() | ||
| val members: FirestoreReferenceList<User> | ||
| ) |
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6 changes: 6 additions & 0 deletions
6
app/src/main/java/com/android/unio/model/firestore/FirestorePaths.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,6 @@ | ||
| package com.android.unio.model.firestore | ||
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| object FirestorePaths { | ||
| const val ASSOCIATION_PATH = "associations" | ||
| const val USER_PATH = "users" | ||
| } |
91 changes: 91 additions & 0 deletions
91
app/src/main/java/com/android/unio/model/firestore/FirestoreReferenceList.kt
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| @@ -0,0 +1,91 @@ | ||
| package com.android.unio.model.firestore | ||
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| import com.google.firebase.firestore.DocumentSnapshot | ||
| import com.google.firebase.firestore.FirebaseFirestore | ||
| import com.google.firebase.firestore.ktx.firestore | ||
| import com.google.firebase.ktx.Firebase | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
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| /** | ||
| * A class that represents a list of Firestore objects that are identified by their UIDs. The list | ||
| * is stored as a [StateFlow] and can be updated by calling [requestAll]. | ||
| * | ||
| * In a @Composable function, the list should be accessed using: | ||
| * ```kotlin | ||
| * val list by FirestoreReferenceList.list.collectAsState() | ||
| * ``` | ||
| * | ||
| * @param T The type of the objects in the list. | ||
| * @property db The [FirebaseFirestore] instance to use. | ||
| * @property collectionPath The path to the Firestore collection that contains the objects. | ||
| * @property hydrate A function that converts a [DocumentSnapshot] to a [T]. | ||
| */ | ||
| class FirestoreReferenceList<T>( | ||
| private val db: FirebaseFirestore, | ||
| private val collectionPath: String, | ||
| private val hydrate: (DocumentSnapshot) -> T | ||
| ) : ReferenceList { | ||
| // The internal list of UIDs. | ||
| private var _uids = mutableListOf<String>() | ||
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| // The internal list of objects. | ||
| private val _list = MutableStateFlow<List<T>>(emptyList()) | ||
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| // The public list of objects. | ||
| val list: StateFlow<List<T>> = _list | ||
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| /** | ||
| * Adds a UID to the list. | ||
| * | ||
| * @param uid The UID to add. | ||
| */ | ||
| override fun add(uid: String) { | ||
| _uids.add(uid) | ||
| } | ||
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| /** | ||
| * Adds a list of UIDs to the list. | ||
| * | ||
| * @param uids The UIDs to add. | ||
| */ | ||
| override fun addAll(uids: List<String>) { | ||
| _uids.addAll(uids) | ||
| } | ||
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| /** Requests all documents from Firestore and updates the list. */ | ||
| override fun requestAll() { | ||
| println("Requesting all") | ||
| _list.value = emptyList() | ||
| _uids.forEach { uid -> | ||
| db.collection(collectionPath).document(uid).get().addOnSuccessListener { result -> | ||
| val item = hydrate(result) | ||
| _list.value += item | ||
| println("Added $item") | ||
| } | ||
| } | ||
| } | ||
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| companion object { | ||
| /** Creates a [FirestoreReferenceList] from a list of UIDs. */ | ||
| fun <T> fromList( | ||
| list: List<String>, | ||
| db: FirebaseFirestore = Firebase.firestore, | ||
| collectionPath: String, | ||
| hydrate: (DocumentSnapshot) -> T | ||
| ): FirestoreReferenceList<T> { | ||
| val result = FirestoreReferenceList(db, collectionPath, hydrate) | ||
| result.addAll(list) | ||
| return result | ||
| } | ||
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| /** Creates an empty [FirestoreReferenceList]. */ | ||
| fun <T> empty( | ||
| db: FirebaseFirestore = Firebase.firestore, | ||
| collectionPath: String, | ||
| hydrate: (DocumentSnapshot) -> T | ||
| ): FirestoreReferenceList<T> { | ||
| return FirestoreReferenceList(db, collectionPath, hydrate) | ||
| } | ||
| } | ||
| } |
9 changes: 9 additions & 0 deletions
9
app/src/main/java/com/android/unio/model/firestore/ReferenceList.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,9 @@ | ||
| package com.android.unio.model.firestore | ||
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| interface ReferenceList { | ||
| fun add(uid: String) | ||
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| fun addAll(uids: List<String>) | ||
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| fun requestAll() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,11 @@ | ||
| package com.android.unio.model.user | ||
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| import com.android.unio.model.association.Association | ||
| import com.android.unio.model.firestore.FirestoreReferenceList | ||
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| data class User( | ||
| val id: String, | ||
| val uid: String, | ||
| val name: String, | ||
| val email: String, | ||
| val followingAssociations: List<Association> | ||
| val followingAssociations: FirestoreReferenceList<Association> | ||
| ) |
9 changes: 9 additions & 0 deletions
9
app/src/main/java/com/android/unio/model/user/UserRepository.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,9 @@ | ||
| package com.android.unio.model.user | ||
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| interface UserRepository { | ||
| fun init(onSuccess: () -> Unit) | ||
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| fun getUsers(onSuccess: (List<User>) -> Unit, onFailure: (Exception) -> Unit) | ||
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| fun getUserWithId(id: String, onSuccess: (User) -> Unit, onFailure: (Exception) -> Unit) | ||
| } |
67 changes: 67 additions & 0 deletions
67
app/src/main/java/com/android/unio/model/user/UserRepositoryFirestore.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,67 @@ | ||
| package com.android.unio.model.user | ||
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| import com.android.unio.model.association.AssociationRepositoryFirestore | ||
| import com.android.unio.model.firestore.FirestorePaths.ASSOCIATION_PATH | ||
| import com.android.unio.model.firestore.FirestorePaths.USER_PATH | ||
| import com.android.unio.model.firestore.FirestoreReferenceList | ||
| import com.google.firebase.Firebase | ||
| import com.google.firebase.auth.auth | ||
| import com.google.firebase.firestore.DocumentSnapshot | ||
| import com.google.firebase.firestore.FirebaseFirestore | ||
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| class UserRepositoryFirestore(private val db: FirebaseFirestore) : UserRepository { | ||
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| override fun init(onSuccess: () -> Unit) { | ||
| Firebase.auth.addAuthStateListener { | ||
| if (it.currentUser != null) { | ||
| onSuccess() | ||
| } | ||
| } | ||
| } | ||
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| override fun getUsers(onSuccess: (List<User>) -> Unit, onFailure: (Exception) -> Unit) { | ||
| db.collection(USER_PATH) | ||
| .get() | ||
| .addOnSuccessListener { result -> | ||
| val associations = result.map { hydrate(it) } | ||
| onSuccess(associations) | ||
| } | ||
| .addOnFailureListener { exception -> onFailure(exception) } | ||
| } | ||
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| override fun getUserWithId( | ||
| id: String, | ||
| onSuccess: (User) -> Unit, | ||
| onFailure: (Exception) -> Unit | ||
| ) { | ||
| db.collection(USER_PATH) | ||
| .document(id) | ||
| .get() | ||
| .addOnSuccessListener { document -> | ||
| val association = hydrate(document) | ||
| onSuccess(association) | ||
| } | ||
| .addOnFailureListener { exception -> onFailure(exception) } | ||
| } | ||
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| companion object { | ||
| fun hydrate(doc: DocumentSnapshot): User { | ||
| val db = FirebaseFirestore.getInstance() | ||
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| val followingAssociationsUids = | ||
| doc.get("followingAssociations") as? List<String> ?: emptyList() | ||
| val followingAssociations = | ||
| FirestoreReferenceList.fromList( | ||
| followingAssociationsUids, | ||
| db, | ||
| ASSOCIATION_PATH, | ||
| AssociationRepositoryFirestore::hydrate) | ||
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| return User( | ||
| uid = doc.id, | ||
| name = doc.getString("name") ?: "", | ||
| email = doc.getString("email") ?: "", | ||
| followingAssociations = followingAssociations) | ||
| } | ||
| } | ||
| } |
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