name: MCP package build check

# Verifies @classroomio/mcp still builds on PRs/pushes that touch it.
# Intentionally separate from publish-mcp.yml so PR CI never sees NPM_TOKEN.

on:
  pull_request:
    paths:
      - 'packages/mcp/**'
      - 'packages/question-types/**'
      - 'packages/utils/**'
      - 'pnpm-lock.yaml'
      - '.github/workflows/mcp-package-build-check.yml'
  push:
    paths:
      - 'packages/mcp/**'
      - 'packages/question-types/**'
      - 'packages/utils/**'
      - 'pnpm-lock.yaml'
      - '.github/workflows/mcp-package-build-check.yml'
    branches:
      - main

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v4
        with:
          node-version: 20.19.3
          cache: 'pnpm'

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

      - name: Build publishable MCP package
        run: pnpm mcp:build