# https://taskfile.dev/usage/
# https://pkg.go.dev/text/template
# https://go-task.github.io/slim-sprig/
version: "3"

vars:
  TASKFILE_DIR:
    sh: pwd
  POETRY: poetry
  # The prefix to use when running dev commands
  RUN_PREFIX: "{{.POETRY}} run"
  # The python to use for running in the venv
  VENV_PYTHON: "{{.RUN_PREFIX}} python"
    # The python interpreter to use.
  PYTHON: python
  # Truthish values ("true", "1", etc.) results in java being installed as a
  # system dependency.
  INSTALL_SYSTEM_DEPS_JAVA: "false"
  # Truthish values ("true", "1", etc.) results in extras being installed with
  # pip.
  INSTALL_EXTRAS: "false"
  # Truthish values ("true", "1", etc.) results in extensive tests being ran and
  # dependencies for extensive tests being installed.
  EXTENSIVE: "false"
  # The python version for which tox should run, empty string does not restrict
  # python versions.
  TOX_PYTHON_VERSION: ""
  TEST_HARNESS: '{{if (and (mustFromJson .EXTENSIVE) (not (eq OS "windows")))}}./with-fuseki.sh{{end}} '
  # Truthish values ("true", "1", etc.) results in github specific things being
  # done.
  WITH_GITHUB_ACTIONS: "false"
  # Truthish values ("true", "1", etc.) results in coverage being generated for
  # relevant commands.
  WITH_COVERAGE: "false"
  PIP_COMPILE: pip-compile
  DOCKER: docker
  OCI_REFERENCE: ghcr.io/rdflib/rdflib
tasks:
  install:system-deps:
    desc: Install system dependencies
    cmds:
      - echo "OS = {{OS}}"
      - echo "ARCH = {{ARCH}}"
      - |
        {{if (and (mustFromJson .EXTENSIVE) (eq OS "linux"))}}
          if type apt-get >/dev/null 2>&1
          then
            sudo apt-get install -y libdb-dev
          elif type dnf >/dev/null 2>&1
          then
            sudo dnf install -y libdb-devel
          fi
        {{else if (and (mustFromJson .EXTENSIVE) (eq OS "darwin"))}}
          brew install berkeley-db@4
        {{end}}

  install:tox:
    desc: Install tox
    cmds:
      - "{{.PYTHON}} -m pip install tox {{if (mustFromJson .WITH_GITHUB_ACTIONS)}}tox-gh-actions{{end}}"

  poetry:configure:
    desc: Configure the environment for development with poetry
    cmds:
      - |
        {{if .POETRY_PYTHON}} {{.POETRY}} env use {{.POETRY_PYTHON}} {{end}}
        {{.POETRY}} install {{if (or (mustFromJson .INSTALL_EXTRAS) (mustFromJson .EXTENSIVE))}} --all-extras{{end}} {{.CLI_ARGS}}

  configure:
    desc: Configure the environment for development
    cmds:
      - task: venv:install

  venv:install:
    desc: Create and install a venv
    cmds:
      - task: poetry:configure

  venv:clean:
    desc: Clean the virtual environment
    cmds:
      - "{{.POETRY}} env remove --all {{.CLI_ARGS}}"

  venv:run:
    desc: Run a command inside the venv
    cmds:
      - cmd: |
          {{.RUN_PREFIX}} {{.CLI_ARGS}}

  run:
    desc: Run a command. If WITH_VENV is truthish, the command will be run inside the virtual environment.
    cmds:
      - task: venv:run

  tox:
    desc: Run tox
    cmds:
      - echo "TOXENV=${TOXENV}"
      - |
        {{if .TOX_PYTEST_ARGS}}TOX_PYTEST_ARGS={{shellQuote .TOX_PYTEST_ARGS}}{{end}} \
        {{if .TOX_JUNIT_XML_PREFIX}}TOX_JUNIT_XML_PREFIX={{shellQuote .TOX_JUNIT_XML_PREFIX}}{{end}} \
        {{if .COVERAGE_FILE}}COVERAGE_FILE={{shellQuote .COVERAGE_FILE}}{{end}} \
        {{.TEST_HARNESS}} \
        {{.PYTHON | shellQuote}} \
          -m tox \
          {{.CLI_ARGS}}
    env:
      TOXENV: '{{if .TOX_PYTHON_VERSION}}py{{mustRegexReplaceAll "^([0-9]+)[.]([0-9]+).*" .TOX_PYTHON_VERSION "${1}${2}"}}{{if (mustFromJson .EXTENSIVE)}}-extensive{{end}}{{.TOXENV_SUFFIX | default ""}}{{end}}'
  test:
    desc: Run tests
    cmds:
      - '{{.TEST_HARNESS}}{{.RUN_PREFIX}} pytest {{if (mustFromJson .WITH_COVERAGE)}}--cov --cov-report={{end}} {{.CLI_ARGS}}'
  flake8:
    desc: Run flake8
    cmds:
      - |
        if {{.VENV_PYTHON}} -c 'import importlib.util; exit(0 if importlib.util.find_spec("flakeheaven") is not None else 1)'
        then
          1>&2 echo "running flakeheaven"
          {{.VENV_PYTHON}} -m flakeheaven lint {{.CLI_ARGS}}
        else
          1>&2 echo "skipping flakeheaven as it is not installed, likely because python version is older than 3.8"
        fi
  black:
    desc: Run black
    cmds:
      - '{{.VENV_PYTHON}} -m black {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
  isort:
    desc: Run isort
    cmds:
      - '{{.VENV_PYTHON}} -m isort {{if (mustFromJson (.CHECK | default "false"))}}--check --diff {{end}}{{.CLI_ARGS | default "."}}'
  mypy:
    desc: Run mypy
    cmds:
      - "{{.VENV_PYTHON}} -m mypy --show-error-context --show-error-codes {{.CLI_ARGS}}"

  lint:fix:
    desc: Fix auto-fixable linting errors
    cmds:
      - task: isort
      - task: black

  lint:
    desc: Perform linting
    cmds:
      - task: isort
        vars: { CHECK: true }
      - task: black
        vars: { CHECK: true }
      - task: flake8

  validate:static:
    desc: Perform static validation
    cmds:
      - task: lint
      - task: mypy

  validate:fix:
    desc: Fix auto-fixable validation errors.
    cmds:
      - task: lint:fix

  validate:
    desc: Perform all validation
    cmds:
      - task: validate:static
      - task: test

  docs:clean:
    desc: Clean generated documentation
    cmds:
      - task: _rimraf
        vars: { RIMRAF_TARGET: "docs/_build/" }

  docs:
    desc: Build documentation
    cmds:
      - echo "PYTHONPATH=${PYTHONPATH}"
      - "{{.VENV_PYTHON}} -m sphinx.cmd.build -T -W -b html -d docs/_build/doctree docs docs/_build/html {{.CLI_ARGS}}"

  docs:live-server:
    desc: Run a live server on generated docs
    cmds:
      - 'echo "NOTE: Docs must be built for this to work"'
      - npx -p live-server live-server docs/_build/html/ {{.CLI_ARGS}}

  default:
    desc: Run validate
    cmds:
      - task: validate

  clean:mypy:
    desc: Clean mypy cache
    cmds:
      - task: _rimraf
        vars: { RIMRAF_TARGET: ".mypy_cache" }
      - task: clean:tox:mypy

  clean:tox:
    desc: Clean tox environments
    cmds:
      - task: _rimraf
        vars: { RIMRAF_TARGET: ".tox" }

  clean:tox:mypy:
    desc: Clean mypy cache inside tox environments
    cmds:
      - task: _rimraf
        vars: { RIMRAF_TARGET: ".tox/*/.mypy_cache/" }

  clean:
    desc: Clean everything
    cmds:
      - task: docs:clean
      - task: clean:tox
      - task: clean:mypy
      - task: venv:clean
      - task: _rimraf
        vars: { RIMRAF_TARGET: ".var/devcontainer" }
      - task: _rimraf
        vars: { RIMRAF_TARGET: "var/test-sdist" }

  test:data:fetch:
    desc: Fetch test data.
    cmds:
      - "{{.VENV_PYTHON}} test/data/fetcher.py {{.CLI_ARGS}}"

  pre-commit:install:
    desc: Install pre-commit hooks
    cmds:
      - pre-commit install {{.CLI_ARGS}}

  pre-commit:run:
    desc: Run pre-commit
    cmds:
      - pre-commit run {{.CLI_ARGS}}

  pre-commit:run:all-files:
    desc: Run pre-commit on all files
    cmds:
      - pre-commit run --all-files  {{.CLI_ARGS}}

  gha:validate:
    desc: GitHub Actions Validation Workflow
    env:
      COVERALLS_PARALLEL: true
      COVERALLS_FLAG_NAME: "{{.OS}}-{{.TOX_PYTHON_VERSION}}{{.MATRIX_SUFFIX}}"
      COVERALLS_SERVICE_NAME: '{{.COVERALLS_SERVICE_NAME | default (env "COVERALLS_SERVICE_NAME") | default "github"}}'
    cmds:
      - task: install:system-deps
      - task: install:tox
        vars:
          WITH_GITHUB_ACTIONS: true
      - cmd: "{{.PYTHON}} -m pip install coveralls"
      - task: tox
        vars:
          COVERAGE_FILE: ".coverage"
      - cmd: coveralls

  gha:flake8:
    desc: GitHub Actions flake8 workflow
    cmds:
      - task: poetry:configure
        vars:
          CLI_ARGS: --no-root --only=flake8
      - task: flake8

  cmd:rdfpipe:
    desc: Run rdfpipe
    cmds:
      - cmd: "{{.VENV_PYTHON}} -m rdflib.tools.rdfpipe {{.CLI_ARGS}}"

  pip-compile:
    cmds:
      - cmd: "{{.PIP_COMPILE}} --quiet --annotate --emit-options --resolver=backtracking {{.CLI_ARGS}}"

  docker:prepare:
    cmds:
      - task: pip-compile
        vars: { CLI_ARGS: "docker/latest/requirements.in" }
  docker:unstable:
    desc: ...
    cmds:
      - cmd: |
          # fetch for caching ...
          {{.DOCKER}} image pull {{.OCI_REFERENCE}}:unstable || :

          set -eo pipefail
          mkdir -vp var
          {{.POETRY}} export -o var/requirements.txt
          pipx run --spec=build build --wheel
          {{.DOCKER}} buildx build \
            --cache-to=type=inline \
            --cache-from=type=registry,ref={{.OCI_REFERENCE}}:unstable \
            --tag {{.OCI_REFERENCE}}:unstable \
            --progress plain \
            -f docker/unstable/Dockerfile \
            {{.DOCKER_BUILD_ARGS}} \
            .

          if {{.DOCKER_PUSH | default "false"}}
          then
            {{.DOCKER}} image push {{.OCI_REFERENCE}}:unstable
          fi
  docker:latest:
    desc: ...
    cmds:
      - cmd: |
          # fetch for caching ...
          {{.DOCKER}} image pull {{.OCI_REFERENCE}}:latest || :

          set -eo pipefail

          {{.DOCKER}} buildx build \
            --cache-to=type=inline \
            --cache-from=type=registry,ref={{.OCI_REFERENCE}}:latest \
            --tag {{.OCI_REFERENCE}}:latest \
            --progress plain \
            -f docker/latest/Dockerfile \
            {{.DOCKER_BUILD_ARGS}} \
            .

          _latest_rdflib_version=$({{.DOCKER}} run --entrypoint= {{.OCI_REFERENCE}}:latest bash -c 'pip show rdflib | sed -n "s/^Version: //gp"')
          echo "_latest_rdflib_version=${_latest_rdflib_version}"

          {{.DOCKER}} image tag {{.OCI_REFERENCE}}:latest {{.OCI_REFERENCE}}:${_latest_rdflib_version}

          if {{.DOCKER_PUSH | default "false"}}
          then
            {{.DOCKER}} image push {{.OCI_REFERENCE}}:latest
            {{.DOCKER}} image push {{.OCI_REFERENCE}}:${_latest_rdflib_version}
          fi

  docs:build-diagrams:
    desc: Build documentation diagrams
    cmds:
      - cmd: |
          shopt -s globstar;
          for plantuml_file in ./**/*.plantuml
          do
            cat "${plantuml_file}" \
              | docker run --rm -i plantuml/plantuml -tsvg -pipe \
              > "${plantuml_file%.*}.svg"
          done

  test:sdist:
    desc: Run tests on the sdist artifact
    cmds:
      - task: _rimraf
        vars: { RIMRAF_TARGET: "dist" }
      - task: _rimraf
        vars: { RIMRAF_TARGET: "var/test-sdist" }
      - poetry build
      - python -c 'import tarfile, glob; tarfile.open(glob.glob("dist/*.tar.gz")[0]).extractall("var/test-sdist")'
      - |
        cd var/test-sdist/rdflib-*
        poetry install
        poetry run mypy --show-error-context --show-error-codes -p rdflib
        poetry run sphinx-build -T -W -b html -d docs/_build/doctree docs docs/_build/html
        poetry run pytest

  test:no_internet:
    desc: Run tests without internet access
    cmds:
      - |
        {{.TEST_HARNESS}}{{.RUN_PREFIX}} firejail --net=none -- pytest -m "not webtest" {{.CLI_ARGS}}
  _rimraf:
    # This task is a utility task for recursively removing directories, it is
    # similar to rm -rf but not identical and it should work wherever there is
    # a python interpreter. The name is inspired by
    # <https://www.npmjs.com/package/rimraf>.
    - cmd: |
        {{.PYTHON}} -c '
        from pathlib import Path;
        import sys, shutil;
        for path in sys.argv[1:]:
          if Path(path).exists():
            sys.stderr.write(f"removing {path}\n")
            shutil.rmtree(path, ignore_errors=True)
        ' {{.RIMRAF_TARGET}}