name: Mobile Checks

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review
    paths:
      - 'mobile/**'
      # Why: the mobile terminal link parsers are conformance-tested against
      # these shared fixtures; desktop-side fixture edits must re-run this suite.
      - 'src/shared/terminal-file-link-conformance.ts'
      # Why all of src/shared: mobile's tsconfig pulls 300+ files from it, and the
      # typecheck baseline now matches on message text, so a desktop-side rename can
      # reword a mobile diagnostic and redden this job for an unrelated author.
      - 'src/shared/**'
      # Why: the mobile typecheck runs through this script and its baseline.
      - 'config/scripts/typecheck-diagnostic-baseline.mjs'
      - 'mobile/typecheck-test-diagnostics.json'
      # Why: this job holds the only checks that load the Fastfile, so edits to
      # it or to the release workflow it guards must re-run them.
      - '.github/workflows/mobile.yml'
      - '.github/workflows/mobile-ios-release.yml'

jobs:
  verify:
    runs-on: ubuntu-latest

    env:
      # Why: an unfrozen bundler silently re-resolves when Gemfile.lock drifts
      # from the Gemfile, which is how the release jobs could land on different
      # fastlane versions in the first place. Fail here instead.
      BUNDLE_FROZEN: 'true'

    defaults:
      run:
        working-directory: mobile

    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          filter: blob:none

      - name: Load base mobile diagnostic baseline
        env:
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
        run: |
          set -euo pipefail
          git cat-file -e "$BASE_SHA^{commit}"
          # Why ls-tree --full-tree: it answers "does the base have this file" from tree
          # objects alone, so a missing baseline is distinguishable from a git failure.
          # Anything other than a clean absence aborts the step rather than silently
          # leaving the growth guard unset, which would pass as "no drift".
          # Why a bare assignment: inside `[ -n "$(...)" ]` the substitution's exit status
          # is discarded, so a git failure would read as "base has no baseline" and pass.
          base_entry="$(git ls-tree -r --full-tree --name-only "$BASE_SHA" -- mobile/typecheck-test-diagnostics.json)"
          if [ -n "$base_entry" ]; then
            base_baseline="$RUNNER_TEMP/typecheck-mobile-base.json"
            git show "$BASE_SHA:mobile/typecheck-test-diagnostics.json" > "$base_baseline"
            echo "TYPECHECK_BASELINE_BASE_PATH=$base_baseline" >> "$GITHUB_ENV"
            echo "Mobile growth guard ACTIVE against $BASE_SHA."
          else
            echo "::warning::Mobile growth guard INACTIVE: base $BASE_SHA has no baseline yet. Expected only on the PR that introduces it."
          fi

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version-file: package.json

      # bundler-cache installs mobile/Gemfile.lock, so this job is also what
      # proves the pinned fastlane the release workflow depends on still
      # resolves — before a release run finds out.
      - name: Setup Ruby and fastlane
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.3'
          bundler-cache: true
          working-directory: mobile

      - name: Setup pnpm
        uses: pnpm/action-setup@v6
        with:
          run_install: false

      # Why: the mobile typecheck imports shared types from ../src/shared, and
      # some of those files import runtime deps (tweetnacl, ws) resolved from
      # the repo-root node_modules. Without a root install, tsc fails with
      # "Cannot find module 'tweetnacl'/'ws'". Mobile is a separate pnpm project
      # (not in the root workspace), so this is a distinct install.
      # --ignore-scripts skips the root postinstall (Electron native-module
      # rebuild) which is irrelevant to a type-only check and would only add
      # time and failure surface on this ubuntu mobile runner.
      - name: Install root dependencies
        working-directory: .
        run: pnpm install --frozen-lockfile --ignore-scripts

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Typecheck
        run: pnpm typecheck

      - name: Test
        run: pnpm test

      - name: Test iOS release version resolution
        run: ruby fastlane/ios_release_version_test.rb

      - name: Test TestFlight lane arguments
        run: ruby fastlane/fastfile_testflight_arguments_test.rb

      # Why: nothing else in CI loads the Fastfile, so a syntax error, a broken
      # require, or an undefined constant only surfaces mid-release — the
      # ios-distribute job failed every run for six days that way. `lanes` just
      # loads and lists, so it needs no App Store Connect credentials and makes
      # no network calls to Apple.
      - name: Smoke-check the Fastfile
        env:
          FASTLANE_SKIP_UPDATE_CHECK: '1'
          FASTLANE_OPT_OUT_USAGE: '1'
        run: bundle exec fastlane lanes

      - name: Lint
        run: pnpm lint

      - name: Check formatting
        run: pnpm format:check