mobile-dev-client.yml

name: Mobile Dev Client
run-name: ${{ github.event_name == 'workflow_dispatch' && format('Dev client {0}{1} {2}', inputs.platform, inputs.platform == 'android' && format(' {0}', inputs.abi) || '', inputs.fingerprint) || '' }}

# Builds the simulator and emulator development client for a commit's native
# fingerprint and shares it through the native-client cache, the one
# `vp run mobile:install` reads on every machine. Android builds with Gradle,
# ccache, and pnpm state on a sticky disk; iOS builds on a macOS runner, so no
# machine needs Xcode or an EAS build for it.
#
# - push to main: main's client is cached before anyone asks for it.
# - workflow_dispatch: `mobile:install` starts this for the checkout's HEAD on a
#   cache miss, when the person running it may dispatch workflows here, and
#   waits for the client in the cache. The run name is how it finds its run.
# - pull_request (this file or the script): builds without sharing, as a check.
on:
  push:
    branches: [main]
    paths:
      - apps/mobile/**
      - packages/client-runtime/**
      - packages/contracts/**
      - packages/shared/**
      - assets/**
      - patches/**
      - scripts/mobile-native-client.ts
      - package.json
      - pnpm-lock.yaml
      - pnpm-workspace.yaml
      - .github/workflows/mobile-dev-client.yml
  pull_request:
    paths:
      - .github/workflows/mobile-dev-client.yml
      - scripts/mobile-native-client.ts
  workflow_dispatch:
    inputs:
      ref:
        description: Commit to build (default main)
        required: false
        type: string
      platform:
        description: Platform
        required: true
        default: android
        type: choice
        options: [android, ios]
      abi:
        description: Android ABI of the device
        required: true
        default: x86_64
        type: choice
        options: [x86_64, arm64-v8a]
      fingerprint:
        description: Native fingerprint the caller expects; the run fails when the commit's differs
        required: false
        type: string

permissions:
  contents: read

jobs:
  android:
    name: Android ${{ matrix.abi }}
    if: github.repository == 'pingdotgg/t3code' && (github.event_name != 'workflow_dispatch' || inputs.platform == 'android')
    runs-on: blacksmith-32vcpu-ubuntu-2404
    timeout-minutes: 45
    strategy:
      fail-fast: false
      matrix:
        # Pool emulators are x86_64; a dispatch builds the ABI it asks for.
        abi: ${{ github.event_name == 'workflow_dispatch' && fromJSON(format('["{0}"]', inputs.abi)) || fromJSON('["x86_64"]') }}
    concurrency:
      # One run per client: a second request for the same fingerprint waits and finds it
      # in the cache. A shared group would drop every waiting run but the newest.
      group: mobile-dev-client-android-${{ matrix.abi }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || inputs.fingerprint || github.sha }}
      cancel-in-progress: ${{ github.event_name == 'pull_request' }}
    env:
      NODE_OPTIONS: --max-old-space-size=8192
      ABI: ${{ matrix.abi }}
      EXPECTED_FINGERPRINT: ${{ inputs.fingerprint }}
      # A pull request checks that the build works: it builds even on a cache hit and shares nothing.
      T3_NATIVE_CLIENT_CACHE: ${{ github.event_name == 'pull_request' && 'off' || '' }}
      # Gradle and Xcode output goes to the job log, not a file on the runner.
      T3_NATIVE_CLIENT_VERBOSE: "1"
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          ref: ${{ inputs.ref || github.sha }}

      # A dispatch names any commit GitHub has, including a fork's. Only a commit that
      # collaborators pushed here builds with the cache login and the shared disk.
      - name: Check the commit belongs to this repository
        if: github.event_name == 'workflow_dispatch'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          sha="$(git rev-parse HEAD)"
          if git ls-remote --heads origin | grep -q "^$sha"; then
            exit 0
          fi
          status="$(gh api "repos/$GITHUB_REPOSITORY/compare/$sha...main" --jq .status || true)"
          if [ "$status" = "ahead" ] || [ "$status" = "identical" ]; then
            exit 0
          fi
          echo "::error::$sha is not the head of a branch in $GITHUB_REPOSITORY and not on main; build it locally."
          exit 1

      # The build runs dependency scripts; it gets no token. checkout keeps the token in a
      # file under RUNNER_TEMP that .git/config includes, so both go. `persist-credentials:
      # false` fails here: its cleanup runs `git submodule foreach`, which stops at the
      # vendored gitlinks under .repos (no .gitmodules entry).
      - name: Drop checkout credentials
        run: |
          git config --local --get-regexp '^includeif\..*\.path$' | while read -r key file; do
            rm -f "$file"
            git config --local --unset-all "$key"
          done
          git config --local --name-only --get-regexp '^http\..*\.extraheader$' | while read -r key; do
            git config --local --unset-all "$key"
          done
          rm -f "$RUNNER_TEMP"/git-credentials-*.config
          if git config --local --get-regexp 'extraheader|includeif' || ls "$RUNNER_TEMP"/git-credentials-*.config 2>/dev/null; then
            echo "::error::checkout credentials are still present"
            exit 1
          fi

      - name: Prepare build directories
        run: |
          cache="$HOME/.cache/t3-android-dev-client"
          {
            echo "GRADLE_USER_HOME=$cache/gradle"
            echo "CCACHE_DIR=$cache/ccache"
            echo "CCACHE_MAXSIZE=5G"
            # Gradle installs the NDK fresh each run, so key on the compiler's version, not its mtime.
            echo "CCACHE_COMPILERCHECK=%compiler% -v"
            # The checkout path is the same on every run, so ccache keys stay stable.
            echo "CCACHE_BASEDIR=$GITHUB_WORKSPACE"
            # CMake (3.17+) reads these, and AGP passes Gradle's environment through.
            echo "CMAKE_C_COMPILER_LAUNCHER=ccache"
            echo "CMAKE_CXX_COMPILER_LAUNCHER=ccache"
          } >> "$GITHUB_ENV"

      # Pull requests build cold: their code must not write Gradle or ccache state that
      # the runs holding the cache login restore.
      - name: Mount build cache
        if: github.event_name != 'pull_request'
        uses: useblacksmith/stickydisk@v1
        with:
          key: ${{ github.repository }}-android-dev-client-${{ matrix.abi }}
          path: ~/.cache/t3-android-dev-client

      - name: Configure Gradle and ccache
        run: |
          mkdir -p "$GRADLE_USER_HOME" "$CCACHE_DIR"
          # No daemon: nothing should hold the sticky disk open when it is committed.
          printf 'org.gradle.caching=true\norg.gradle.daemon=false\n' > "$GRADLE_USER_HOME/gradle.properties"
          sudo sed -i 's|http://|https://|g' /etc/apt/blacksmith-ubuntu-mirrors.txt /etc/apt/sources.list.d/ubuntu.sources
          sudo apt-get update -qq && sudo apt-get install -y -qq ccache
          ccache --zero-stats

      - name: Setup dependencies
        uses: ./.github/actions/setup-ci-deps
        with:
          task-cache-read-token: ${{ secrets.T3_TASK_CACHE_READ_TOKEN }}
          install-args: --filter=@t3tools/mobile... --filter=@t3tools/scripts...

      - name: Setup Java
        uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: 17

      # Only this step's login can write to the cache; pull requests never get it.
      # Only this login can write to the cache; pull requests never get it.
      - id: login
        name: Log in to the native client cache
        if: github.event_name != 'pull_request'
        env:
          WRITE_TOKEN: ${{ secrets.T3_NATIVE_CLIENT_WRITE_TOKEN }}
        run: |
          if [ -z "$WRITE_TOKEN" ]; then
            echo "::warning::T3_NATIVE_CLIENT_WRITE_TOKEN is not set; nothing can be shared, so nothing is built."
            exit 0
          fi
          node --input-type=module <<'NODE'
          import { mkdirSync, readFileSync, writeFileSync } from "node:fs";
          import { homedir } from "node:os";
          import { join } from "node:path";
          const { endpoint } = JSON.parse(readFileSync(".task-cache.json", "utf8"));
          const directory = join(homedir(), ".config/t3-task-cache");
          mkdirSync(directory, { recursive: true, mode: 0o700 });
          writeFileSync(
            join(directory, "credentials.json"),
            JSON.stringify({ [endpoint]: { name: "ci-native-clients", token: process.env.WRITE_TOKEN } }),
            { mode: 0o600 },
          );
          NODE
          echo "T3_NATIVE_CLIENT_SHARE=required" >> "$GITHUB_ENV"
          echo "ready=true" >> "$GITHUB_OUTPUT"

      - name: Build and share
        if: github.event_name == 'pull_request' || steps.login.outputs.ready == 'true'
        shell: bash # pipefail: a failed build fails the step through tee
        run: |
          node scripts/mobile-native-client.ts ensure android --prepare --abi "$ABI" ${EXPECTED_FINGERPRINT:+--expect-fingerprint "$EXPECTED_FINGERPRINT"} | tee "$RUNNER_TEMP/dev-client.log"
          result="$(tail -n 1 "$RUNNER_TEMP/dev-client.log")"
          echo "### android dev client: \`$(jq -r '.source' <<<"$result")\` for fingerprint \`$(jq -r '.fingerprint' <<<"$result")\`" >> "$GITHUB_STEP_SUMMARY"

      - name: Cache statistics
        if: success() || failure()
        continue-on-error: true
        run: |
          {
            echo '```'
            ccache --show-stats
            echo '```'
          } >> "$GITHUB_STEP_SUMMARY"

  ios:
    name: iOS simulator
    if: github.repository == 'pingdotgg/t3code' && (github.event_name != 'workflow_dispatch' || inputs.platform == 'ios')
    runs-on: blacksmith-12vcpu-macos-26
    timeout-minutes: 60
    concurrency:
      group: mobile-dev-client-ios-${{ github.event_name == 'pull_request' && github.event.pull_request.number || inputs.fingerprint || github.sha }}
      cancel-in-progress: ${{ github.event_name == 'pull_request' }}
    env:
      NODE_OPTIONS: --max-old-space-size=8192
      EXPECTED_FINGERPRINT: ${{ inputs.fingerprint }}
      T3_NATIVE_CLIENT_CACHE: ${{ github.event_name == 'pull_request' && 'off' || '' }}
      # Gradle and Xcode output goes to the job log, not a file on the runner.
      T3_NATIVE_CLIENT_VERBOSE: "1"
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          ref: ${{ inputs.ref || github.sha }}

      # A dispatch names any commit GitHub has, including a fork's. Only a commit that
      # collaborators pushed here builds with the cache login and the shared disk.
      - name: Check the commit belongs to this repository
        if: github.event_name == 'workflow_dispatch'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          sha="$(git rev-parse HEAD)"
          if git ls-remote --heads origin | grep -q "^$sha"; then
            exit 0
          fi
          status="$(gh api "repos/$GITHUB_REPOSITORY/compare/$sha...main" --jq .status || true)"
          if [ "$status" = "ahead" ] || [ "$status" = "identical" ]; then
            exit 0
          fi
          echo "::error::$sha is not the head of a branch in $GITHUB_REPOSITORY and not on main; build it locally."
          exit 1

      # The build runs dependency scripts; it gets no token. checkout keeps the token in a
      # file under RUNNER_TEMP that .git/config includes, so both go. `persist-credentials:
      # false` fails here: its cleanup runs `git submodule foreach`, which stops at the
      # vendored gitlinks under .repos (no .gitmodules entry).
      - name: Drop checkout credentials
        run: |
          git config --local --get-regexp '^includeif\..*\.path$' | while read -r key file; do
            rm -f "$file"
            git config --local --unset-all "$key"
          done
          git config --local --name-only --get-regexp '^http\..*\.extraheader$' | while read -r key; do
            git config --local --unset-all "$key"
          done
          rm -f "$RUNNER_TEMP"/git-credentials-*.config
          if git config --local --get-regexp 'extraheader|includeif' || ls "$RUNNER_TEMP"/git-credentials-*.config 2>/dev/null; then
            echo "::error::checkout credentials are still present"
            exit 1
          fi

      - name: Setup dependencies
        uses: ./.github/actions/setup-ci-deps
        with:
          task-cache-read-token: ${{ secrets.T3_TASK_CACHE_READ_TOKEN }}
          install-args: --filter=@t3tools/mobile... --filter=@t3tools/scripts...

      # Only this login can write to the cache; pull requests never get it.
      - id: login
        name: Log in to the native client cache
        if: github.event_name != 'pull_request'
        env:
          WRITE_TOKEN: ${{ secrets.T3_NATIVE_CLIENT_WRITE_TOKEN }}
        run: |
          if [ -z "$WRITE_TOKEN" ]; then
            echo "::warning::T3_NATIVE_CLIENT_WRITE_TOKEN is not set; nothing can be shared, so nothing is built."
            exit 0
          fi
          node --input-type=module <<'NODE'
          import { mkdirSync, readFileSync, writeFileSync } from "node:fs";
          import { homedir } from "node:os";
          import { join } from "node:path";
          const { endpoint } = JSON.parse(readFileSync(".task-cache.json", "utf8"));
          const directory = join(homedir(), ".config/t3-task-cache");
          mkdirSync(directory, { recursive: true, mode: 0o700 });
          writeFileSync(
            join(directory, "credentials.json"),
            JSON.stringify({ [endpoint]: { name: "ci-native-clients", token: process.env.WRITE_TOKEN } }),
            { mode: 0o600 },
          );
          NODE
          echo "T3_NATIVE_CLIENT_SHARE=required" >> "$GITHUB_ENV"
          echo "ready=true" >> "$GITHUB_OUTPUT"

      - name: Build and share
        if: github.event_name == 'pull_request' || steps.login.outputs.ready == 'true'
        shell: bash # pipefail: a failed build fails the step through tee
        run: |
          node scripts/mobile-native-client.ts ensure ios --prepare ${EXPECTED_FINGERPRINT:+--expect-fingerprint "$EXPECTED_FINGERPRINT"} | tee "$RUNNER_TEMP/dev-client.log"
          result="$(tail -n 1 "$RUNNER_TEMP/dev-client.log")"
          echo "### ios dev client: \`$(jq -r '.source' <<<"$result")\` for fingerprint \`$(jq -r '.fingerprint' <<<"$result")\`" >> "$GITHUB_STEP_SUMMARY"