# Documentation deployment workflow
# Deploys MkDocs documentation to GitHub Pages with versioning via mike
#
# Deployment strategy:
# - Push to main: Deploys as "latest" (always the current main branch docs)
# - MCP server release tag: Deploys versioned docs (e.g., "1.0.0") as permanent snapshots
#
# The "latest" alias always points to the main branch documentation.
# Tagged releases get permanent versioned documentation (e.g., "1.0.0", "1.1.0").
# Users can switch between versions using the version selector in the docs.

name: Deploy Documentation

on:
  push:
    branches:
      - main
    paths:
      - "docs/**"
      - "mkdocs.yaml"
      - "src/**"
      - ".github/workflows/docs.yaml"
    tags:
      # Deploy versioned docs when MCP server is released
      - "robust-mcp-server-v*"
  workflow_dispatch:
    inputs:
      version:
        description: "Version to deploy (e.g., 1.0.0, dev)"
        required: false
        default: "dev"
      set_latest:
        description: "Set this version as 'latest' alias"
        required: false
        default: false
        type: boolean

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: write
  pages: write

# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
# However, do NOT cancel in-progress runs as we want to allow these deployments to complete.
concurrency:
  group: "pages"
  cancel-in-progress: false

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0  # Full history needed for git-revision-date plugin

      - name: Configure Git for mike
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.11"

      - name: Install uv
        uses: astral-sh/setup-uv@v5
        with:
          enable-cache: true
          cache-dependency-glob: "uv.lock"

      - name: Install dependencies
        run: uv sync --all-extras --frozen

      - name: Determine version to deploy
        id: version
        run: |
          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            # Manual dispatch - use provided version
            VERSION="${{ github.event.inputs.version }}"
            SET_LATEST="${{ github.event.inputs.set_latest }}"
          elif [[ "${{ github.ref_type }}" == "tag" ]]; then
            # Tag push - extract version from tag
            # robust-mcp-server-v1.0.0 -> 1.0.0
            TAG="${{ github.ref_name }}"
            VERSION="${TAG#robust-mcp-server-v}"
            # Tagged releases never set latest (main branch is always latest)
            SET_LATEST="false"
          else
            # Push to main - deploy as "latest"
            VERSION="latest"
            SET_LATEST="true"
          fi
          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
          echo "set_latest=${SET_LATEST}" >> "$GITHUB_OUTPUT"
          echo "Deploying version: ${VERSION} (set_latest: ${SET_LATEST})"

      - name: Deploy latest documentation (main branch)
        if: steps.version.outputs.version == 'latest'
        run: |
          # Deploy main branch docs as "latest" and set as default
          # Run deploy without --push, then set-default with --push for single git push
          uv run mike deploy --update-aliases latest
          uv run mike set-default --push latest

      - name: Deploy versioned documentation (tagged release)
        if: steps.version.outputs.version != 'latest'
        run: |
          VERSION="${{ steps.version.outputs.version }}"
          SET_LATEST="${{ steps.version.outputs.set_latest }}"

          if [[ "$SET_LATEST" == "true" ]]; then
            # Manual dispatch requested setting as latest
            # Run deploy without --push, then set-default with --push for single git push
            uv run mike deploy --update-aliases "$VERSION" latest
            uv run mike set-default --push latest
          else
            # Deploy version only (tagged releases don't update latest)
            uv run mike deploy --push "$VERSION"
          fi

      - name: List deployed versions
        run: uv run mike list