from __future__ import annotations

import datetime
import os
from pathlib import Path
import re
import sys
import warnings

import pyvista

sys.path.append(str(Path(__file__).parent))

# Suppress invalid user data path when there is an issue with restoring the cache for CI
# https://github.com/pyvista/pyvista/pull/7747
warnings.filterwarnings(
    'ignore',
    message=r'Ignoring invalid PYVISTA_USERDATA_PATH.*',
    category=UserWarning,
)

# -- General configuration ------------------------------------------------

templates_path = ['_templates']
source_suffix = '.rst'
root_doc = 'index'
project = 'tinypages'
year = datetime.datetime.now(tz=datetime.timezone.utc).date().year
copyright = f'2021-{year}, PyVista developers'  # noqa: A001
version = '0.1'
release = '0.1'
exclude_patterns = ['_build']
pygments_style = 'sphinx'

extensions = [
    'numpydoc',
    'matplotlib.sphinxext.plot_directive',
    'pyvista.ext.plot_directive',
#    'pyvista.ext.viewer_directive',
    'sphinx.ext.autosummary',
    'sphinx_design',
]

# -- Plot directive specific configuration --------------------------------
plot_setup = plot_cleanup = 'import pyvista'

# -- Options for HTML output ----------------------------------------------

html_theme = 'sphinx_book_theme'

html_static_path = ['_static']

# -- pyvista configuration ------------------------------------------------
pyvista.BUILDING_GALLERY = True

# -- .. pyvista-plot:: directive ----------------------------------------------
from numpydoc.docscrape_sphinx import SphinxDocString

IMPORT_PYVISTA_RE = r'\b(import +pyvista|from +pyvista +import)\b'
IMPORT_MATPLOTLIB_RE = r'\b(import +matplotlib|from +matplotlib +import)\b'

plot_setup = """
from pyvista import set_plot_theme as __s_p_t
__s_p_t('document')
del __s_p_t
"""
plot_cleanup = plot_setup

if value := os.environ.get('PLOT_SKIP'):
    plot_skip = value.lower() == 'true'

if value := os.environ.get('PLOT_SKIP_OPTIONAL'):
    plot_skip_optional = value.lower() == 'true'


def _str_examples(self):
    examples_str = '\n'.join(self['Examples'])

    if (
        self.use_plots
        and re.search(IMPORT_MATPLOTLIB_RE, examples_str)
        and 'plot::' not in examples_str
    ):
        out = []
        out += self._str_header('Examples')
        out += ['.. plot::', '']
        out += self._str_indent(self['Examples'])
        out += ['']
        return out
    elif re.search(IMPORT_PYVISTA_RE, examples_str) and 'plot-pyvista::' not in examples_str:
        out = []
        out += self._str_header('Examples')
        out += ['.. pyvista-plot::', '']
        out += self._str_indent(self['Examples'])
        out += ['']
        return out
    else:
        return self._str_section('Examples')


SphinxDocString._str_examples = _str_examples