trigger:
  batch: true
  branches:
    include:
      - main
      - "refs/tags/ccf-*"

jobs:
  - job: build_and_publish_docs
    container: ccfmsrc.azurecr.io/ccf/ci:14-02-2023-virtual
    pool:
      vmImage: ubuntu-20.04

    steps:
      - checkout: self
        clean: true

      - script: |
          set -ex
          env
          git status
          git rev-parse HEAD
          git checkout -b main $(git rev-parse HEAD)
        displayName: Prepare repo

      # Used to generate version.py
      - template: .azure-pipelines-templates/cmake.yml
        parameters:
          cmake_args: "-DCOMPILE_TARGET=virtual"

      # Note: Link checks are disabled for now as often lead to intermittent
      # false positives (e.g. a third-party website being down) that may block
      # releases
      # - script: |
      #     set -ex
      #     python3.8 -m venv env
      #     source env/bin/activate
      #     pip install wheel
      #     pip install -U -r doc/requirements.txt
      #     pip install -U -e ./python
      #     sphinx-build -b linkcheck doc build/html
      #   displayName: Link checks

      # Only the main branch builds and publishes the versioned documentation.
      # This is because the configuration of the docs (e.g. theme) will change
      # over time and only the main branch should be source of truth and be
      # kept up to date.
      #
      # Only on main and not on PRs
      # Note: override remote whitelist to detect release branches on remote
      - script: |
          set -ex
          python3.8 -m venv env
          source env/bin/activate
          pip install wheel
          pip install -U -r doc/requirements.txt
          pip install -U -e ./python
          pip install -U -r doc/historical_ccf_requirements.txt
          sphinx-multiversion -D smv_remote_whitelist=origin doc build/html
        displayName: Sphinx Multi-version
        condition: |
          and(
            not(eq(variables['Build.Reason'], 'PullRequest')),
            eq(variables['Build.SourceBranch'], 'refs/heads/main')
          )

      # Only on PRs and not on main (e.g. release branch/tag)
      - script: |
          set -ex
          python3.8 -m venv env
          source env/bin/activate
          pip install wheel
          pip install -U -r doc/requirements.txt
          pip install -U -e ./python
          sphinx-build doc build/html
        displayName: Sphinx Single-version
        condition: |
          or(
            eq(variables['Build.Reason'], 'PullRequest'),
            not(eq(variables['Build.SourceBranch'], 'refs/heads/main'))
          )

      - script: |
          set -ex
          git init
          git config --local user.name "Azure Pipelines"
          git config --local user.email "azuredevops@microsoft.com"
          git add .
          touch .nojekyll
          git add .nojekyll
          cp ../../doc/index.html .
          git add index.html
          git commit -m "[ci skip] commit generated documentation"
        displayName: "Commit pages"
        workingDirectory: build/html

      - task: DownloadSecureFile@1
        inputs:
          secureFile: ccf
        displayName: "Get the deploy key"

      - script: |
          set -ex
          mv $DOWNLOADSECUREFILE_SECUREFILEPATH deploy_key
          chmod 600 deploy_key
          mkdir ~/.ssh
          chmod 700 ~/.ssh
          ssh-keyscan -t rsa github.com >> ~/.ssh/known_hosts
          git remote add origin git@github.com:microsoft/CCF.git
          GIT_SSH_COMMAND="ssh -i deploy_key" git push -f origin HEAD:gh-pages
        displayName: "Publish GitHub Pages"
        condition: |
          and(
            not(eq(variables['Build.Reason'], 'PullRequest')),
            eq(variables['Build.SourceBranch'], 'refs/heads/main')
          )
        workingDirectory: build/html

      - script: rm deploy_key || true
        displayName: "Make sure key is removed"
        workingDirectory: build/html
        condition: always()