# Circle CI configuration file
# https://circleci.com/docs/

version: 2.1


#######################################
# Define some common steps as commands.
#

commands:
  check-skip:
    steps:
      - run:
          name: Check-skip
          command: |
            export git_log=$(git log --max-count=1 --pretty=format:"%B" | tr "\n" " ")
            echo "Got commit message:"
            echo "${git_log}"
            if [[ -v CIRCLE_PULL_REQUEST ]] && ([[ "$git_log" == *"[skip circle]"* ]] || [[ "$git_log" == *"[circle skip]"* ]]); then
              echo "Skip detected, exiting job ${CIRCLE_JOB} for PR ${CIRCLE_PULL_REQUEST}."
              circleci-agent step halt;
            fi

  merge:
    steps:
      - run:
          name: Merge with upstream
          command: |
            if ! git remote -v | grep upstream; then
              git remote add upstream https://github.com/matplotlib/matplotlib.git
            fi
            git fetch upstream
            if [[ "$CIRCLE_BRANCH" != "main" ]] && \
               [[ "$CIRCLE_PR_NUMBER" != "" ]]; then
              echo "Merging ${CIRCLE_PR_NUMBER}"
              git pull --ff-only upstream "refs/pull/${CIRCLE_PR_NUMBER}/merge"
            fi

  apt-install:
    steps:
      - run:
          name: Install apt packages
          command: |
            sudo apt -qq update
            sudo apt install -y \
              inkscape \
              ffmpeg \
              dvipng \
              lmodern \
              cm-super \
              texlive-latex-base \
              texlive-latex-extra \
              texlive-fonts-recommended \
              texlive-latex-recommended \
              texlive-pictures \
              texlive-xetex \
              ttf-wqy-zenhei \
              graphviz \
              fonts-crosextra-carlito \
              fonts-freefont-otf \
              fonts-humor-sans \
              fonts-noto-cjk \
              optipng

  fonts-install:
    steps:
      - restore_cache:
          key: fonts-2
      - run:
          name: Install custom fonts
          command: |
            mkdir -p ~/.local/share/fonts
            wget -nc https://github.com/google/fonts/blob/master/ofl/felipa/Felipa-Regular.ttf?raw=true -O ~/.local/share/fonts/Felipa-Regular.ttf || true
            fc-cache -f -v
      - save_cache:
          key: fonts-2
          paths:
            - ~/.local/share/fonts/

  pip-install:
    description: Upgrade pip and setuptools and wheel to get as clean an install as possible
    steps:
      - run:
          name: Upgrade pip, setuptools, wheel
          command: |
            python -m pip install --upgrade --user pip
            python -m pip install --upgrade --user wheel
            python -m pip install --upgrade --user 'setuptools!=60.6.0'

  doc-deps-install:
    parameters:
      numpy_version:
        type: string
        default: ""
    steps:
      - run:
          name: Install Python dependencies
          command: |
            python -m pip install --user \
                numpy<< parameters.numpy_version >> \
                -r requirements/doc/doc-requirements.txt
            python -m pip install --no-deps --user \
                git+https://github.com/matplotlib/mpl-sphinx-theme.git

  mpl-install:
    steps:
      - run:
          name: Install Matplotlib
          command: |
            if [[ "$CIRCLE_BRANCH" == v*-doc ]]; then
              # The v*-doc branches must build against the specified release.
              version=${CIRCLE_BRANCH%-doc}
              version=${version#v}
              python -m pip install matplotlib==${version}
            else
              python -m pip install --user -ve .
            fi
      - save_cache:
          key: build-deps-1
          paths:
            # FreeType 2.6.1 tarball.
            - ~/.cache/matplotlib/0a3c7dfbda6da1e8fce29232e8e96d987ababbbf71ebc8c75659e4132c367014
            # Qhull 2020.2 tarball.
            - ~/.cache/matplotlib/b5c2d7eb833278881b952c8a52d20179eab87766b00b865000469a45c1838b7e

  doc-build:
    steps:
      - restore_cache:
          keys:
            - sphinx-env-v1-{{ .BuildNum }}-{{ .Environment.CIRCLE_JOB }}
            - sphinx-env-v1-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}-{{ .Environment.CIRCLE_JOB }}
      - run:
          name: Build documentation
          command: |
            # Set epoch to date of latest tag.
            export SOURCE_DATE_EPOCH="$(git log -1 --format=%at $(git describe --abbrev=0))"
            # Set release mode only when deploying to devdocs.
            if [ "$CIRCLE_PROJECT_USERNAME" = "matplotlib" ] && \
               [ "$CIRCLE_BRANCH" = "main" ] && \
               [ "$CIRCLE_PR_NUMBER" = "" ]; then
              export RELEASE_TAG='-t release'
            fi
            mkdir -p logs
            make html O="-T $RELEASE_TAG -j4 -w /tmp/sphinxerrorswarnings.log"
            rm -r build/html/_sources
          working_directory: doc
      - save_cache:
          key: sphinx-env-v1-{{ .BuildNum }}-{{ .Environment.CIRCLE_JOB }}
          paths:
            - doc/build/doctrees

  doc-show-errors-warnings:
    steps:
      - run:
          name: Extract possible build errors and warnings
          command: |
            (grep "WARNING\|ERROR" /tmp/sphinxerrorswarnings.log ||
             echo "No errors or warnings")
            # Save logs as an artifact, and convert from absolute paths to
            # repository-relative paths.
            sed "s~$PWD/~~" /tmp/sphinxerrorswarnings.log > \
              doc/logs/sphinx-errors-warnings.log
          when: always
      - store_artifacts:
          path: doc/logs/sphinx-errors-warnings.log

  doc-show-deprecations:
    steps:
      - run:
          name: Extract possible deprecation warnings in examples and tutorials
          command: |
            (grep -rl DeprecationWarning doc/build/html/gallery ||
             echo "No deprecation warnings in gallery")
            (grep -rl DeprecationWarning doc/build/html/plot_types ||
             echo "No deprecation warnings in plot_types")
            (grep -rl DeprecationWarning doc/build/html/tutorials ||
             echo "No deprecation warnings in tutorials")
            # Save deprecations that are from this absolute directory, and
            # convert to repository-relative paths.
            (grep -Ero --no-filename "$PWD/.+DeprecationWarning.+$" \
             doc/build/html/{gallery,plot_types,tutorials} || echo) | \
              sed "s~$PWD/~~" > doc/logs/sphinx-deprecations.log
          when: always
      - store_artifacts:
          path: doc/logs/sphinx-deprecations.log

  doc-bundle:
    steps:
      - run:
          name: Bundle sphinx-gallery documentation artifacts
          command: >
            tar cf doc/build/sphinx-gallery-files.tar.gz
            doc/api/_as_gen
            doc/gallery
            doc/plot_types
            doc/tutorials
          when: always
      - store_artifacts:
          path: doc/build/sphinx-gallery-files.tar.gz


##########################################
# Here is where the real jobs are defined.
#

jobs:
  docs-python39:
    docker:
      - image: cimg/python:3.9
    resource_class: large
    steps:
      - checkout
      - check-skip
      - merge

      - apt-install
      - fonts-install
      - pip-install

      - mpl-install
      - doc-deps-install

      - doc-build
      - doc-show-errors-warnings
      - doc-show-deprecations

      - doc-bundle

      - store_artifacts:
          path: doc/build/html
      - store_test_results:
          path: doc/build/test-results

      - add_ssh_keys:
          fingerprints:
            - "be:c3:c1:d8:fb:a1:0e:37:71:72:d7:a3:40:13:8f:14"

      - deploy:
          name: "Deploy new docs"
          command: ./.circleci/deploy-docs.sh

#########################################
# Defining workflows gets us parallelism.
#

workflows:
  version: 2
  build:
    jobs:
      # NOTE: If you rename this job, then you must update the `if` condition
      # and `circleci-jobs` option in `.github/workflows/circleci.yml`.
      - docs-python39