name: Deploy Braintrust preview scorers

on:
  pull_request:
    types: [labeled, synchronize]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  pull-requests: write
  contents: read

jobs:
  push-scorers:
    name: Push preview scorers
    if: contains(github.event.pull_request.labels.*.name, 'preview-scorers') && github.event.pull_request.head.repo.full_name == github.repository
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Checkout
        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
        with:
          fetch-depth: 0
          persist-credentials: false
          ref: ${{ github.head_ref || github.ref_name }}

      - name: Check for scorer file changes
        id: changed
        # On labeled events, always push. On synchronize, only push if scorer files changed.
        env:
          GH_EVENT_ACTION: ${{ github.event.action }}
          GH_EVENT_PR_REF: ${{ github.event.pull_request.base.ref }}
        run: |
          if [[ "${GH_EVENT_ACTION}" == "synchronize" ]]; then
            changed=$(git diff --name-only origin/${GH_EVENT_PR_REF}...HEAD | grep -E 'evals/scorer' || true)
            if [ -z "$changed" ]; then
              echo "No scorer files changed, skipping push"
              echo "skip=true" >> $GITHUB_OUTPUT
            else
              echo "skip=false" >> $GITHUB_OUTPUT
            fi
          else
            echo "skip=false" >> $GITHUB_OUTPUT
          fi

      - name: Install pnpm
        if: steps.changed.outputs.skip != 'true'
        uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0
        with:
          run_install: false

      - name: Use Node.js
        if: steps.changed.outputs.skip != 'true'
        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
        with:
          node-version-file: ".nvmrc"
          cache: "pnpm"

      - name: Install Dependencies
        if: steps.changed.outputs.skip != 'true'
        run: pnpm install --frozen-lockfile

      - name: Push scorers to staging
        if: steps.changed.outputs.skip != 'true'
        id: push
        run: |
          cd apps/studio && pnpm scorers:deploy
          slugs=$(jq -r '[.[].slug] | join(",")' evals/scorer-online-manifest.json)
          echo "slugs=$slugs" >> $GITHUB_OUTPUT
        env:
          BRAINTRUST_API_KEY: ${{ secrets.BRAINTRUST_API_KEY }}
          BRAINTRUST_PROJECT_ID: ${{ secrets.BRAINTRUST_STAGING_PROJECT_ID }}
          GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}

      - name: Post PR comment
        if: steps.changed.outputs.skip != 'true'
        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
        env:
          BRAINTRUST_STAGING_PROJECT_ID: ${{ secrets.BRAINTRUST_STAGING_PROJECT_ID }}
          SCORER_SLUGS: ${{ steps.push.outputs.slugs }}
        with:
          script: |
            const prNumber = context.payload.pull_request.number
            const branch = process.env.GITHUB_HEAD_REF
            const prefix = branch.replace(/[^a-z0-9-]/gi, '-').toLowerCase()
            const stagingUrl = 'https://www.braintrust.dev/app/supabase.io/p/Assistant%20(Staging%20Scorers)/scorers'

            const slugs = process.env.SCORER_SLUGS.split(',')
            const slugList = slugs.map(s => `- \`${prefix}-${s}\``).join('\n')

            const sha = context.sha.slice(0, 7)
            const marker = '<!-- preview-scorers-bot -->'
            const body = `${marker}
            ### Braintrust Preview Scorers

            Deployed scorers to [Assistant (Staging Scorers)](${stagingUrl}):

            ${slugList}

            Commit: ${sha}`

            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
            })

            const existing = comments.find(c => c.body?.includes(marker))

            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              })
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                body,
              })
            }