name: test / unit

on:
  push:
    branches: [main]
    paths-ignore:
      - "README.md"
      - "examples/**"
      - "showcase/**"
      - "sdk-python/**"
  pull_request:
    branches: [main]
    paths-ignore:
      - "README.md"
      - "examples/**"
      - "showcase/**"
      - "sdk-python/**"
  workflow_dispatch:
    inputs:
      branch:
        description: "Branch to run the workflow on"
        required: true
        default: "main"
        type: string
env:
  NODE_OPTIONS: "--max-old-space-size=4096"
  NX_VERBOSE_LOGGING: true
  NX_CI_EXECUTION_ID: ${{ github.head_ref }}-${{ github.sha }}-${{ github.run_attempt }}
  NX_CI_EXECUTION_ENV: "Unit Tests"

# Least-privilege by default. Individual jobs/steps can widen when needed.
# id-token: write is required for Depot OIDC auth (runs-on: depot-ubuntu-*).
permissions:
  contents: read
  id-token: write

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  unit:
    name: "unit"
    runs-on: depot-ubuntu-24.04-4
    timeout-minutes: 15
    strategy:
      fail-fast: false
      matrix:
        node-version: [20.x, 22.x, 24.x]
    steps:
      - name: Checkout
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
        with:
          ref: ${{ github.event.inputs.branch || github.ref }}
          persist-credentials: false
          # Full history so `nx affected` can diff HEAD against the PR base /
          # the previous push, instead of rebuilding+retesting every package
          # on every run. A shallow clone has no merge-base to diff against.
          fetch-depth: 0

      - name: Setup pnpm
        # Omit `version:` so pnpm/action-setup inherits from the repo's
        # `packageManager` field in package.json (via corepack).
        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: ${{ matrix.node-version }}
          # Do NOT use cache: "pnpm" here — its key omits the Node.js version,
          # so a better-sqlite3 binary compiled for one Node ABI (e.g. ABI 137
          # from Node 24) would be served to a job running a different ABI
          # (Node 20 = ABI 115, Node 22 = ABI 127), causing "Module did not
          # self-register". We handle pnpm caching manually below with the
          # node-version in the key.
          # Fork-safety note: actions/cache is equally fork-safe — GitHub
          # prevents fork PRs from writing to the base repo's cache at the platform level.

      - name: Get pnpm store directory
        id: pnpm-cache
        run: echo "store-path=$(pnpm store path --silent)" >> $GITHUB_OUTPUT

      - name: Cache pnpm store (scoped to Node.js version)
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ${{ steps.pnpm-cache.outputs.store-path }}
          key: ${{ runner.os }}-pnpm-store-${{ matrix.node-version }}-${{ hashFiles('pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-${{ matrix.node-version }}-

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

      - name: Configure Nx Cloud environment
        run: |
          echo "NX_CI_EXECUTION_ID=${{ github.run_id }}-${{ github.run_attempt }}-unit-v1-${{ matrix.node-version }}" >> $GITHUB_ENV
          echo "NX_CLOUD_NO_TIMEOUTS=true" >> $GITHUB_ENV
          echo "NX_CLOUD_DISTRIBUTED_EXECUTION=false" >> $GITHUB_ENV
          echo "NX_NO_CLOUD=true" >> $GITHUB_ENV
          echo "NX_TUI=false" >> $GITHUB_ENV

      - name: Determine affected range
        # Pass GitHub context through env (not inline ${{ }} in the script) to
        # avoid template-injection — base_ref is attacker-influenceable.
        env:
          EVENT_NAME: ${{ github.event_name }}
          BASE_REF: ${{ github.base_ref }}
          BEFORE_SHA: ${{ github.event.before }}
        run: |
          if [ "$EVENT_NAME" = "pull_request" ]; then
            # Diff against the merge-base with the (current tip of the) base
            # branch so advances on main don't drag unrelated packages in.
            git fetch --no-tags origin "$BASE_REF"
            BASE=$(git merge-base FETCH_HEAD HEAD)
          elif [ "$EVENT_NAME" = "push" ]; then
            # BEFORE_SHA (github.event.before) is the previous tip of this branch.
            BASE="$BEFORE_SHA"
            if [ -z "$BASE" ] \
               || [ "$BASE" = "0000000000000000000000000000000000000000" ] \
               || ! git cat-file -e "${BASE}^{commit}" 2>/dev/null; then
              # First push / force-push / unknown parent → previous commit.
              BASE=$(git rev-parse HEAD~1 2>/dev/null || git rev-parse HEAD)
            fi
          fi
          echo "NX_BASE=${BASE}" >> "$GITHUB_ENV"
          echo "NX_HEAD=$(git rev-parse HEAD)" >> "$GITHUB_ENV"
          echo "Affected range: ${BASE:-<full>}...$(git rev-parse HEAD)"

      - name: Generate GraphQL codegen files
        run: npx nx run @copilotkit/runtime-client-gql:graphql-codegen

      - name: Select test projects
        id: select
        # PR/push → only packages affected since the base. workflow_dispatch
        # (manual / nightly-style full run) → every package with tests.
        # `--projects` scopes to packages/** in `nx show projects` (it does NOT
        # in the `nx affected` run form, which also pulls in downstream
        # examples/storybook — hence the show-projects → run-many split).
        env:
          EVENT_NAME: ${{ github.event_name }}
          # The workflow sets NX_VERBOSE_LOGGING=true, which makes `nx show
          # projects` print "[isolated-plugin] spawned worker…" to stdout and
          # corrupt the --json payload we parse below. Force it off here.
          NX_VERBOSE_LOGGING: "false"
        run: |
          # Editing this workflow can't surface as an "affected" nx package, so
          # `nx affected` would select nothing and the build/test path would go
          # unexercised on the very PR that changes it. Force a full run when
          # this file itself changed in the range, same as a manual dispatch.
          FULL=false
          if [ "$EVENT_NAME" = "workflow_dispatch" ]; then
            FULL=true
          elif git diff --name-only "$NX_BASE" "$NX_HEAD" \
               | grep -qx '.github/workflows/test_unit.yml'; then
            FULL=true
            echo "test_unit.yml changed in range → running ALL packages."
          fi
          if [ "$FULL" = "true" ]; then
            PROJECTS=$(npx nx show projects --projects='packages/**' --exclude=@copilotkit/demo-agents -t test --json)
          else
            PROJECTS=$(npx nx show projects --affected --base="$NX_BASE" --head="$NX_HEAD" --projects='packages/**' --exclude=@copilotkit/demo-agents -t test --json)
          fi
          LIST=$(printf '%s' "$PROJECTS" | node -e "let d='';process.stdin.on('data',c=>d+=c).on('end',()=>process.stdout.write(JSON.parse(d).join(',')))")
          echo "projects=$LIST" >> "$GITHUB_OUTPUT"
          if [ -n "$LIST" ]; then echo "has=true" >> "$GITHUB_OUTPUT"; else echo "has=false" >> "$GITHUB_OUTPUT"; fi
          echo "Selected projects: ${LIST:-<none>}"

      - name: Build and test affected packages
        if: steps.select.outputs.has == 'true'
        # run-many builds each selected package's upstream deps via `^build`,
        # so unchanged dependencies are still compiled when something needs them.
        env:
          PROJECTS: ${{ steps.select.outputs.projects }}
        run: npx nx run-many -t build,test --projects="$PROJECTS" --exclude=@copilotkit/demo-agents

      - name: No affected packages
        if: steps.select.outputs.has != 'true'
        run: echo "No package code affected since the base — skipping build & test."

      - name: Run release script tests
        run: npx vitest run --config scripts/release/vitest.config.mts