ci.yml

name: CI
on:
  push:
    branches: [main]
  pull_request:

# A second push to a PR makes the first run's answer worthless — the verifier job downloads
# IDEs, so letting both finish is minutes of runner time spent on a stale commit.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    name: Build and test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: 21
      - uses: gradle/actions/setup-gradle@v6.3.0

      # :core holds the parser and its tests; :plugin has none by design (its test task is
      # disabled in build.gradle.kts), so `gradlew test` alone reports success either way.
      # Naming :core:test means a removed test suite shows up as a task that no longer exists.
      - id: coretest
        run: ./gradlew :core:test

      - name: Test report
        if: always()
        run: |
          set -euo pipefail
          shopt -s nullglob
          files=(core/build/test-results/test/TEST-*.xml)
          if [ ${#files[@]} -eq 0 ]; then
            # No results after a *failed* test step says nothing new — the job is already red
            # for the real reason. It is only a finding when the step claimed success.
            if [ "${{ steps.coretest.outcome }}" != "success" ]; then
              echo "::notice::no test results, but the test step failed above — see it for the cause"
              exit 0
            fi
            echo "::error:::core:test succeeded and produced no results — did the suite disappear?"
            exit 1
          fi
          awk -F'"' '/<testsuite /{for(i=1;i<=NF;i++){
              if($(i-1)~/tests=$/)t+=$i; if($(i-1)~/failures=$/)f+=$i; if($(i-1)~/errors=$/)e+=$i}}
            END{printf ":core — %d tests, %d failures, %d errors\n", t, f, e}' "${files[@]}" \
            >> "$GITHUB_STEP_SUMMARY"

      - run: ./gradlew build verifyPluginProjectConfiguration verifyPluginStructure

      - name: Build the distributable
        run: ./gradlew buildPlugin

      - uses: actions/upload-artifact@v7
        with:
          name: plugin-zip
          path: plugin/build/distributions/*.zip
          if-no-files-found: error

  verify:
    name: Plugin Verifier
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: 21
      - uses: gradle/actions/setup-gradle@v6.3.0

      # Each IDE under test is a ~1GB download. Caching them separately from the Gradle cache
      # keeps a dependency change from evicting them.
      - uses: actions/cache@v6
        with:
          path: |
            ~/.gradle/caches/modules-2/files-2.1/com.jetbrains.intellij.idea
            ~/.pluginVerifier
          key: ide-verifier-${{ hashFiles('plugin/build.gradle.kts') }}
          restore-keys: ide-verifier-

      - run: ./gradlew verifyPlugin

      # The task passes when an IDE reports problems below the failure level, and it passes
      # just as quietly when the ides {} block resolves to nothing. Assert on the reports:
      # one directory per verified IDE, and the count has to match what is declared.
      - name: Every declared IDE was actually verified
        run: |
          set -euo pipefail
          shopt -s nullglob
          reports=plugin/build/reports/pluginVerifier
          declared=$(grep -c '^ *create(IntelliJPlatformType' plugin/build.gradle.kts)
          dirs=("$reports"/*/)
          echo "declared=$declared verified=${#dirs[@]}"
          if [ "${#dirs[@]}" -ne "$declared" ]; then
            echo "::error::$declared IDEs declared in pluginVerification, ${#dirs[@]} verified"
            for d in "${dirs[@]}"; do echo "  $(basename "$d")"; done
            exit 1
          fi
          for d in "${dirs[@]}"; do
            echo "- verified against $(basename "$d")" >> "$GITHUB_STEP_SUMMARY"
          done

      - uses: actions/upload-artifact@v7
        if: always()
        with:
          name: plugin-verifier-reports
          path: plugin/build/reports/pluginVerifier
          if-no-files-found: warn