App preview for every pull request commit

codemagic.yaml

# Note: iOS app previews are only available with Codemagic paid plan.
# IPA needs to be signed. Docs for signing: https://docs.codemagic.io/yaml-code-signing/signing-ios/
#
# You need to add your GitHub PAT as environment variable to Codemaigc.
# Docs to create PAT: https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token

workflows:
  app-preview:
    name: App Preview
    instance_type: mac_pro
    max_build_duration: 75
    environment:
      groups:
        - github
        - ios-publishing
        - certificate_credentials
      vars:
        BUNDLE_ID: com.example.flutter
      flutter: v2.8.1
    triggering:
      events:
        - pull_request
    scripts:
      - name: Install dependencies
        script: flutter pub get
      - name: Build APK
        script: flutter build apk --profile
      - name: iOS Code signing
        script: |
          keychain initialize
          app-store-connect fetch-signing-files "$BUNDLE_ID" --type IOS_APP_ADHOC --create
          keychain add-certificates
          xcode-project use-profiles
      - name: Build IPA
        script: flutter build ipa --release --export-options-plist=/Users/builder/export_options.plist
    artifacts:
      - build/**/outputs/apk/**/*.apk
      - build/ios/ipa/*.ipa
    publishing:
      scripts:
        - name: Authenticate GitHub CLI
          script: |
            echo $GITHUB_PAT > gh_credentials.txt
            gh auth login --with-token < gh_credentials.txt
            rm gh_credentials.txt
        - name: Post builds to GitHub PR
          script: |
            export APK_LINK=$(echo $FCI_ARTIFACT_LINKS | jq '.[1] | .url')
            export IPA_LINK=$(echo $FCI_ARTIFACT_LINKS | jq '.[0] | .url')

            export ENCODED_APK_LINK=$(jq -rn --arg x $APK_LINK '$x|@uri')
            export ENCODED_IPA_LINK=$(jq -rn --arg x $IPA_LINK '$x|@uri')

            read -r -d '' COMMENT << EOM
            ⬇️ Generated builds by [Codemagic](https://codemagic.io/app/$FCI_PROJECT_ID/build/$FCI_BUILD_ID) for commit \`$FCI_COMMIT\` ⬇️
            | Android | iOS |
            |:-:|:-:|
            | ![image](https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=$ENCODED_APK_LINK) <br /> [Download-Link]($(echo "$APK_LINK" | tr -d '"')) | ![image](https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=$ENCODED_IPA_LINK) <br /> [Download-Link]($(echo "$IPA_LINK" | tr -d '"')) |
            EOM
            gh pr comment $FCI_PULL_REQUEST_NUMBER -b "$COMMENT"