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# Firebase Apple Open Source Development

This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics,
FirebasePerformance, and FirebaseML.

The repository also includes GoogleUtilities source. The
[GoogleUtilities](GoogleUtilities/README.md) pod is
a set of utilities used by Firebase and other Google products.

Firebase is an app development platform with tools to help you build, grow and
monetize your app. More information about Firebase can be found at
[https://firebase.google.com](https://firebase.google.com).

## Installation

See the three subsections for details about three different installation methods.
1. [Standard pod install](README.md#standard-pod-install)
1. [Installing from the GitHub repo](README.md#installing-from-github)
1. [Experimental Carthage](README.md#carthage-ios-only)

### Standard pod install

Go to
[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).

### Installing from GitHub

For releases starting with 5.0.0, the source for each release is also deployed
to CocoaPods master and available via standard
[CocoaPods Podfile syntax](https://guides.cocoapods.org/syntax/podfile.html#pod).

These instructions can be used to access the Firebase repo at other branches,
tags, or commits.

#### Background

See
[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
for instructions and options about overriding pod source locations.

#### Accessing Firebase Source Snapshots

All of the official releases are tagged in this repo and available via CocoaPods. To access a local
source snapshot or unreleased branch, use Podfile directives like the following:

To access FirebaseFirestore via a branch:
```
pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
```

To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:

```
pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
```

### Carthage (iOS only)

Instructions for the experimental Carthage distribution are at
[Carthage](Carthage.md).

### Rome

Instructions for installing binary frameworks via
[Rome](https://github.com/CocoaPods/Rome) are at [Rome](Rome.md).

### Using Firebase from a Framework or a library

[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)

## Development

To develop Firebase software in this repository, ensure that you have at least
the following software:

  * Xcode 10.3 (or later)
  * CocoaPods 1.7.2 (or later)
  * [CocoaPods generate](https://github.com/square/cocoapods-generate)

For the pod that you want to develop:

`pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios`

Note: If the CocoaPods cache is out of date, you may need to run
`pod repo update` before the `pod gen` command.

Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
those platforms. Since 10.2, Xcode does not properly handle multi-platform
CocoaPods workspaces.

Firestore has a self contained Xcode project. See
[Firestore/README.md](Firestore/README.md).

### Development for Catalyst
* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
* Check the Mac box in the App-iOS Build Settings
* Sign the App in the Settings Signing & Capabilities tab
* Click Pods in the Project Manager
* Add Signing to the iOS host app and unit test targets
* Select the Unit-unit scheme
* Run it to build and test

### Adding a New Firebase Pod

See [AddNewPod.md](AddNewPod.md).

### Managing Headers and Imports

See [HeadersImports.md](HeadersImports.md).

### Code Formatting

To ensure that the code is formatted consistently, run the script
[./scripts/style.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/style.sh)
before creating a PR.

Travis will verify that any code changes are done in a style compliant way. Install
`clang-format` and `swiftformat`:

```
brew install clang-format
brew install swiftformat
```

### Running Unit Tests

Select a scheme and press Command-u to build a component and run its unit tests.

#### Viewing Code Coverage (Deprecated)

First, make sure that [xcov](https://github.com/nakiostudio/xcov) is installed with `gem install xcov`.

After running the `AllUnitTests_iOS` scheme in Xcode, execute
`xcov --workspace Firebase.xcworkspace --scheme AllUnitTests_iOS --output_directory xcov_output`
at Example/ in the terminal. This will aggregate the coverage, and you can run `open xcov_output/index.html` to see the results.

### Running Sample Apps
In order to run the sample apps and integration tests, you'll need valid
`GoogleService-Info.plist` files for those samples. The Firebase Xcode project contains dummy plist
files without real values, but can be replaced with real plist files. To get your own
`GoogleService-Info.plist` files:

1. Go to the [Firebase Console](https://console.firebase.google.com/)
2. Create a new Firebase project, if you don't already have one
3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
identifier (e.g. `com.google.Database-Example`)
4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.

## Specific Component Instructions
See the sections below for any special instructions for those components.

### Firebase Auth

If you're doing specific Firebase Auth development, see
[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
building and running the FirebaseAuth pod along with various samples and tests.

### Firebase Database

The Firebase Database Integration tests can be run against a locally running Database Emulator
or against a production instance.

To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
running the integration test.

To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
running.

### Firebase Storage

To run the Storage Integration tests, follow the instructions in
[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).

#### Push Notifications

Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
In order to actually test receiving push notifications, you will need to:

1. Change the bundle identifier of the sample app to something you own in your Apple Developer
account, and enable that App ID for push notifications.
2. You'll also need to
[upload your APNs Provider Authentication Key or certificate to the Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
at **Project Settings > Cloud Messaging > [Your Firebase App]**.
3. Ensure your iOS device is added to your Apple Developer portal as a test device.

#### iOS Simulator

The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
In order to receive push notifications, you'll have to follow the steps above and run the app on a
physical device.

## Community Supported Efforts

We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
participate in the Firebase community.

### tvOS, macOS, watchOS and Catalyst
Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and work on
tvOS, macOS, watchOS and Catalyst.

For tvOS, checkout the [Sample](Example/tvOSSample).
For watchOS, currently only Messaging and Storage (and their dependencies) have limited support. Checkout the
[Independent Watch App Sample](Example/watchOSSample).

Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and this
repository is actively developed primarily for iOS. While we can catch basic unit test issues with
Travis, there may be some changes where the SDK no longer works as expected on macOS, tvOS or watchOS. If you
encounter this, please [file an issue](https://github.com/firebase/firebase-ios-sdk/issues).

During app setup in the console, you may get to a step that mentions something like "Checking if the app
has communicated with our servers". This relies on Analytics and will not work on macOS/tvOS/watchOS/Catalyst.
**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.

To install, add a subset of the following to the Podfile:

```
pod 'Firebase/ABTesting'     # No watchOS support yet
pod 'Firebase/Auth'          # No watchOS support yet
pod 'Firebase/Crashlytics'   # No watchOS support yet
pod 'Firebase/Database'      # No watchOS support yet
pod 'Firebase/Firestore'     # No watchOS support yet
pod 'Firebase/Functions'     # No watchOS support yet
pod 'Firebase/Messaging'
pod 'Firebase/RemoteConfig'  # No watchOS support yet
pod 'Firebase/Storage'
```

#### Additional Catalyst Notes

* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
to Build Settings.
* FirebaseFirestore requires signing the
[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).

## Roadmap

See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
plans and directions.

## Contributing

See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
iOS SDK.

## License

The contents of this repository is licensed under the
[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).

Your use of Firebase is governed by the
[Terms of Service for Firebase Services](https://firebase.google.com/terms/).

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