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WPAndroid Integration.md

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WordPress Android Integration Guide

Summary

WPAndroid by default integrates react-native-bridge as a binary dependency that's fetched from a remote maven repo. The CI in this repo will deploy a new version each time a commit is pushed to trunk or an open PR, as well as each time a tag is created. This is the only required dependency. Whenever a new version is deployed, we can simply update ext.gutenbergMobileVersion in build.gradle.

During development, we can use composite builds and dependency substitution to point WPAndroid to our local checkout of gutenberg-mobile. To do this, we need to copy the local-builds.gradle-example file in WPAndroid renaming it to local-builds.gradle and change the localGutenbergMobilePath value. Building the project as such will make WPAndroid build the source code for react-native-bridge, react-native-aztec and other sublibraries from the locally checked out folder. It'll also expect the metro server to be running to fetch the JS bundle.

Work with local gutenberg-mobile checkout

From your gutenberg-mobile checkout:

  • Make sure you run npm install or npm ci
  • Run metro server with npm run start:reset

From your WordPress-Android checkout:

  • Copy local-builds.gradle-example renaming it to local-builds.gradle
  • Update localGutenbergMobilePathto your local gutenberg-mobilecheckout
  • Run the project

How it works:

When settings.gradle finds localGutenbergMobilePath in local-builds.gradle, it'll substitute the below binary dependency with the local folder:

implementation "$rootProject.gradle.ext.gutenbergMobileBinaryPath:$rootProject.ext.gutenbergMobileVersion"

react-native-bridge is setup to include all the other projects, so no other action is necessary.

Deploy a new version of react-native-bridge from CI

There are a few different ways to do this:

  1. Open a new PR or push a new commit to an open PR which will be published as <PR number>-<commit full SHA1>
  2. Merge a PR to trunk which will be published as <trunk>-<commit full SHA1>
  3. Create a new tag which will be published as <tag name>

How it works:

CI will run the following commands:

  • npm ci
  • npm run bundle:android
  • gutenberg/packages/react-native-bridge/android/publish-aztec-and-bridge.sh <version>

Update WPAndroid's binary version

In order to test this, make sure localGutenbergMobilePath in your local-builds.gradle file is commented out as otherwise the binary version will be ignored.

Note: The Build Android RN Bridge & Publish to S3 task in gutenberg-mobile needs to complete before WPAndroid's Installable Build CI task will succeed. As such, you may see WPAndroid's CI tasks fail with a 403 error if they run before the gutenberg-mobile task completes. You can either wait for wait for gutenberg-mobile's CI task to pass before pushing changes to ext.gutenbergMobileVersion or restart failed WPAndroid CI tasks after gutenberg-mobile's CI task passes.

How to

How to test a gutenberg-mobile PR in WPAndroid

Assuming that there is no open WPAndroid PR yet:

  1. Setup WPAndroid to work with local gutenberg-mobile checkout
  2. Switch gutenberg-mobile to the branch you're testing
  3. Run the app

How to share a WIP WPAndroid APK

  1. Open a gutenberg-mobile PR which will publish a new version
  2. Open a WPAndroid PR updating the binary version
  3. Peril will publish a comment to the WPAndroid PR with a link to the APK

Alternatively, once the react-native-bridge version is published, we can locally create the APK. Note that there is no way to use composite build to create a WPAndroid APK that can be shared. This is because composite build only works with the local metro server.

How to checkout gutenberg-mobile to deployed binary version

Whenever the CI publishes react-native-bridge, it will either include the full commit hash or the tag in its name. So, we can checkout simply checkout the commit hash or the tag.