name: '📚 API Docs'
run-name: 'Build & Deploy API Reference'
# Runs daily or can be triggered manually for immediate updates

on:
  workflow_dispatch:
  schedule:
    - cron:  '0 13 * * *'  # Daily at 1PM UTC
env:
  PYTHON_VERSION: "3.11"

jobs:
  # Only runs on main repository to prevent unnecessary builds on forks
  build:
    if: github.repository == 'langchain-ai/langchain' || github.event_name != 'schedule'
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v4
        with:
          path: langchain
      - uses: actions/checkout@v4
        with:
          repository: langchain-ai/langchain-api-docs-html
          path: langchain-api-docs-html
          token: ${{ secrets.TOKEN_GITHUB_API_DOCS_HTML }}

      - name: '📋 Extract Repository List with yq'
        id: get-unsorted-repos
        uses: mikefarah/yq@master
        with:
          cmd: |
            yq '
              .packages[]
              | select(
                  (
                    (.repo | test("^langchain-ai/"))
                    and
                    (.repo != "langchain-ai/langchain")
                  )
                  or
                  (.include_in_api_ref // false)
                )
              | .repo
            ' langchain/libs/packages.yml

      - name: '📋 Parse YAML & Checkout Repositories'
        env:
          REPOS_UNSORTED: ${{ steps.get-unsorted-repos.outputs.result }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Get unique repositories
          REPOS=$(echo "$REPOS_UNSORTED" | sort -u)
          # Checkout each unique repository
          for repo in $REPOS; do
            # Validate repository format (allow any org with proper format)
            if [[ ! "$repo" =~ ^[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+$ ]]; then
              echo "Error: Invalid repository format: $repo"
              exit 1
            fi

            REPO_NAME=$(echo $repo | cut -d'/' -f2)

            # Additional validation for repo name
            if [[ ! "$REPO_NAME" =~ ^[a-zA-Z0-9_.-]+$ ]]; then
              echo "Error: Invalid repository name: $REPO_NAME"
              exit 1
            fi
            echo "Checking out $repo to $REPO_NAME"
            git clone --depth 1 https://github.com/$repo.git $REPO_NAME
          done

      - name: '🐍 Setup Python ${{ env.PYTHON_VERSION }}'
        uses: actions/setup-python@v5
        id: setup-python
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: '📦 Install Initial Python Dependencies'
        working-directory: langchain
        run: |
          python -m pip install -U uv
          python -m uv pip install --upgrade --no-cache-dir pip setuptools pyyaml

      - name: '📦 Organize Library Directories'
        run: python langchain/.github/scripts/prep_api_docs_build.py

      - name: '🧹 Remove Old HTML Files'
        run:
          rm -rf langchain-api-docs-html/api_reference_build/html

      - name: '📦 Install Documentation Dependencies'
        working-directory: langchain
        run: |
          python -m uv pip install $(ls ./libs/partners | xargs -I {} echo "./libs/partners/{}") --overrides ./docs/vercel_overrides.txt
          python -m uv pip install libs/core libs/langchain libs/text-splitters libs/community libs/experimental libs/standard-tests
          python -m uv pip install -r docs/api_reference/requirements.txt

      - name: '🔧 Configure Git Settings'
        working-directory: langchain
        run: |
          git config --local user.email "actions@github.com"
          git config --local user.name "Github Actions"

      - name: '📚 Build API Documentation'
        working-directory: langchain
        run: |
          python docs/api_reference/create_api_rst.py
          python -m sphinx -T -E -b html -d ../langchain-api-docs-html/_build/doctrees -c docs/api_reference docs/api_reference ../langchain-api-docs-html/api_reference_build/html -j auto
          python docs/api_reference/scripts/custom_formatter.py ../langchain-api-docs-html/api_reference_build/html
          # Default index page is blank so we copy in the actual home page.
          cp ../langchain-api-docs-html/api_reference_build/html/{reference,index}.html
          rm -rf ../langchain-api-docs-html/_build/

      # https://github.com/marketplace/actions/add-commit
      - uses: EndBug/add-and-commit@v9
        with:
          cwd: langchain-api-docs-html
          message: 'Update API docs build'