name: Deploy Docs

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: "pages"
  cancel-in-progress: false

defaults:
  run:
    working-directory: docs

jobs:
  get-changed-files:
    runs-on: ubuntu-latest
    outputs:
      changed-files: ${{ steps.changed-files.outputs.added_modified }}
    steps:
      - uses: actions/checkout@v5
      - name: Get changed files
        id: changed-files
        uses: Ana06/get-changed-files@v2.3.0
        with:
          filter: "docs/docs/**"

  deploy:
    runs-on: ubuntu-latest
    timeout-minutes: 10 # Job will be cancelled if it runs for more than 10 minutes
    env:
      GITHUB_TOKEN: ${{ secrets.MKDOCS_GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: astral-sh/setup-uv@v7
        with:
          python-version: "3.12"
          enable-cache: true
          cache-suffix: "docs"

      - name: Install dependencies
        run: |
          yarn
          uv sync --all-groups
          # we run this installation only for internal PRs
          # as GITHUB_TOKEN is not available for PRs from outside contributors
          if [ -n "${GITHUB_TOKEN}" ]; then
            uv run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
          fi

      - name: Run unit tests
        # Run unit tests on the docs build pipeline
        run: make tests
      - name: Lint Docs
        # This step lints the docs using the existing linting set up.
        # It should be very fast and should not require any external services.
        run: make lint-docs
      - name: Build llms-text
        run: make llms-text
      - name: Build site
        run: |
          # If this is main branch, then we want to download stats. we do this 
          # with the env variable DOWNLOAD_STATS=true
          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
            DOWNLOAD_STATS=true make build-docs
          else
            make build-docs
          fi
        env:
          MKDOCS_GIT_COMMITTERS_APIKEY: ${{ secrets.MKDOCS_GIT_COMMITTERS_APIKEY }}
          OPENAI_API_KEY: sf-proj-1234567890 # fake placeholder, shouldn't actually be used
          ANTHROPIC_API_KEY: sk-ant-api03-1234567890 # fake placeholder, shouldn't actually be used
      - name: Check links in notebooks
        env:
          LANGCHAIN_API_KEY: test
        if: github.event_name == 'schedule'
        run: |
          if [ "${{ github.event_name }}" == "schedule" ]; then
            echo "Running link check on all HTML files matching notebooks in docs directory..."
            uv run pytest -v \
              --check-links-ignore "https://(api|web|docs)\.smith\.langchain\.com/.*" \
              --check-links-ignore "https://academy\.langchain\.com/.*" \
              --check-links-ignore "https://x.com/.*" \
              --check-links-ignore "https://twitter.com/.*" \
              --check-links-ignore "https://github\.com/.*" \
              --check-links-ignore "http://localhost:8123/.*" \
              --check-links-ignore "http://localhost:2024.*" \
              --check-links-ignore "http://127.0.0.1:.*" \
              --check-links-ignore "/.*\.(ipynb|html)$" \
              --check-links-ignore "https://python\.langchain\.com/.*" \
              --check-links-ignore "https://openai\.com/.*" \
              --check-links-ignore "https://www\.uber\.com/.*" \
              --check-links-ignore "https://pepy\.tech/.*" \
              --check-links-ignore "docs/docs/static/wordmark_*" \
              --check-links $(find site -name "index.html" | grep -v 'storm/index.html')
              
          else
            echo "Fetching changes from origin/main..."
            git fetch origin main
            echo "Checking for changed notebook files..."
            CHANGED_FILES=$(git diff --name-only --diff-filter=d origin/main | grep 'docs/docs/.*\.ipynb$' | grep -v 'storm.ipynb' | sed -E 's|^docs/docs/|site/|; s/\.ipynb$/\/index.html/' || true)
            echo "Changed files: ${CHANGED_FILES}"
            if [ -n "${CHANGED_FILES}" ]; then
              echo "Running link check on HTML files matching changed notebook files..."
              uv run pytest -v \
                --check-links-ignore "https://(api|web|docs)\.smith\.langchain\.com/.*" \
                --check-links-ignore "https://academy\.langchain\.com/.*" \
                --check-links-ignore "http://localhost:8123/.*" \
                --check-links-ignore "http://localhost:2024.*" \
                --check-links-ignore "http://127.0.0.1:.*" \
                --check-links-ignore "https://x.com/.*" \
                --check-links-ignore "https://twitter.com/.*" \
                --check-links-ignore "https://github\.com/.*" \
                --check-links-ignore "/.*\.(ipynb|html)$" \
                --check-links-ignore "docs/docs/static/wordmark_*" \
                --check-links ${CHANGED_FILES} \
                || ([ $? = 5 ] && exit 0 || exit $?)
            else
              echo "No notebook files changed."
            fi
          fi

      - name: Configure GitHub Pages
        if: github.ref == 'refs/heads/main'
        uses: actions/configure-pages@v5

      - name: Upload Pages Artifact
        # if: github.ref == 'refs/heads/main'
        uses: actions/upload-pages-artifact@v4
        with:
          path: ./docs/site/

      - name: Deploy to GitHub Pages
        if: github.ref == 'refs/heads/main'
        id: deployment
        uses: actions/deploy-pages@v4