Flutter Firebase, Awesome Notifications, RxDart 🚀

A flutter project demonstrating

• Authentication with firebase
• Database management with firebase
• Storage management with firebase
• Managing app state with rx-dart
• Showing firebase push notifications
• Showing local notifications

Firestore Database

• Collection
  • Contains documents and nothing else.
  • Can't directly contain raw fields with values, and can't contain other collections
• CollectionReference
  • Can be used for adding documents, getting document references, and querying for documents
• DocumentReference
  • Refers to a document location in a Firestore database
  • Can be used to write, read, or listen to the location
• DocumentSnapshot
  • An immutable representation for a document in a Firestore database.
• Query
  • Refers to a query which you can read or stream from
• QueryDocumentSnapshot
  • Contains data read from a document in your Firestore database as part of a query
  • Offers the same API surface as a DocumentSnapshot
• QuerySnapshot
  • Contains zero or more QueryDocumentSnapshot objects representing the results of a query

Firestore CollectionReference Operations

• snapshots()
  • Stream of querySnapshot
• get()
  • Future of querySnapshot
• where(...)
  • Filters documents based on specific condition
• orderBy(...)
  • Filters documents in descending or ascending order
• limit(int limit)
  • limits the number of documents
• orderBy(Object field1).where(Object field1, ...)
  • filter documents base on conditions
  • The initial orderBy() field should be same as the where() field when an inequality operator is invoked
• orderBy(Object field1).where(Object field1, ...).orderBy(Object field2)
  • filter documents base on conditions
  • Use of orderBy() field again after initial query and pass different field to it
• withConverter<R>(FromFirestore<R> fromFirestore, ToFirestore<R> toFirestore)
  • Transforms a CollectionReference to manipulate a custom object instead of a Map<String, dynamic>
• add(Map<Sting, dynamic> json)
  • Takes a json value and adds a document in the collection
• doc(String? path)
  • Gives a document reference with the provided path

Firestore QueryDocumentSnapshot Operations

• id
  • Gives document id for the snapshot
• reference
  • Gives the reference of the snapshot
• data()
  • Contains all the data of the document snapshot
• get(Object field)
  • Gives the field value

Firestore DocumentReference Operations

• firestore
  • The Firestore instance associated with this document reference
• id
  • This document's given ID within the collection
• parent
  • The parent CollectionReference of this document
• collection(string collectionPath)
  • Gets a CollectionReference instance that
  • Refers to the collection at the specified path, relative from this DocumentReference
  • Example, Chat Collection has a nested Message Collection, get Message Collection from a chat document
• delete()
  • Deletes the current document from the collection
• update(Map<Object, Object?> data)
  • Updates data on the document
  • Data will be merged with any existing document data
  • Does not create new document or field
• get([GetOptions? options])
  • Future of documentSnapshot
• snapshots({bool includeMetadataChanges = false})
  • Stream of documentSnapshot
• set(T data, [SetOptions? options])
  • Sets data on the document, overwriting any existing data
  • If the document does not yet exist, it will be created
  • If SetOptions are provided, the data can be merged into an existing document instead of overwriting
  • It can create new document or field if not presented
• withConverter<R>({FromFirestore<R> fromFirestore, ToFirestore<R> toFirestore,})
  • Transforms a DocumentReference to manipulate a custom object instead of a Map<String, dynamic>

Awesome Notifications

Local

• Initialize local notifications
  • Provide channel key, name, description and other properties
  • Provide custom icon and sound
• Get initial notification actions
  • Do operation when the app is opened
  • Navigate to specific page when the app is opened by a notification
• Request for notification permission
  • Allow device to send notification
• Create local notifications
  • basic notifications
  • scheduled notifications
• Listen notifications action events
  • onNotificationCreatedMethod
  • onNotificationDisplayedMethod
  • onActionReceivedMethod
  • onDismissActionReceivedMethod

Firebase

• Initialize firebase notifications
  • onFcmTokenHandle
  • onNativeTokenHandle
  • onFcmSilentDataHandle
• Request firebase token
  • Get the firebase token
• Delete token