# -*- coding: utf-8 -*-
#
# Configuration file for the Sphinx documentation builder.
#
# This file does only contain a selection of the most common options. For a
# full list see the documentation:
# http://www.sphinx-doc.org/en/master/config

# -- Path setup --------------------------------------------------------------

# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
import os
import pathlib
import shutil
import sys
sys.path.append(os.path.abspath("./_ext"))

from docutils import nodes, utils
from docutils.parsers.rst.roles import set_classes

# -- Project information -----------------------------------------------------

project = u'VyOS'
copyright = u'2026, VyOS maintainers and contributors'
author = u'VyOS maintainers and contributors'

# The short X.Y version (rolling — next major; bumped at branch cut)
version = u'rolling'

# The full version, including alpha/beta/rc tags. The `rolling` branch
# is the rolling tip and serves at /en/rolling/ on RTD; the literal
# below is exposed in the page footer ("v: rolling (current)") and is
# interpolated into _templates/llms.txt.j2 ("This documentation covers
# {{ release }}."). Pin this to a value that names what the rolling
# docs actually serve, not a stale LTS codename. The "(current)" suffix
# is release-channel terminology for the current rolling release; it is
# unrelated to the former branch name.
release = u'rolling (current)'

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

# If your documentation needs a minimal Sphinx version, state it here.
#
# needs_sphinx = '1.0'

# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = ['sphinx.ext.intersphinx',
              'sphinx.ext.todo',
              'sphinx.ext.ifconfig',
              'sphinx.ext.graphviz',
              'notfound.extension',
              'autosectionlabel',
              'myst_parser',
              'sphinx_design',
              'vyos',
              'sphinx_llms_txt',
              'sphinx_sitemap',
]

# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']

# autosectionlabel
autosectionlabel_prefix_document = True


# The suffix(es) of source filenames.
source_suffix = ['.md']

myst_enable_extensions = ["colon_fence", "deflist", "fieldlist", "substitution"]
myst_fence_as_directive = ["cfgcmd", "opcmd", "cmdincludemd"]

# The master toctree document.
master_doc = 'index'

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = "en"

# https://docs.readthedocs.io/en/stable/guides/manage-translations-sphinx.html#create-translatable-files
locale_dirs = ['_locale/']
gettext_compact = True
gettext_uuid = False


# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path .
exclude_patterns = [
    u'_build', 'Thumbs.db', '.DS_Store', '_include/vyos-1x',
    '_rst_legacy',
]

# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'

# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = True

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

# The theme to use for HTML and HTML Help pages.  See the documentation for
# a list of builtin themes.
#
html_theme = "sphinx_rtd_theme"

# Theme options are theme-specific and customize the look and feel of a theme
# further.  For a list of options available for each theme, see the
# documentation.
#
# html_theme_options = {}

# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']

html_extra_path = ['_html_extra']

html_baseurl = 'https://docs.vyos.io/en/rolling/'

_rtd_version_type = os.environ.get('READTHEDOCS_VERSION_TYPE', '')
_github_version = (
    os.environ.get('READTHEDOCS_GIT_COMMIT_HASH', 'rolling')
    if _rtd_version_type == 'external'
    else os.environ.get('READTHEDOCS_GIT_IDENTIFIER', 'rolling')
)

html_context = {
    'display_github': True,
    'github_user': 'vyos',
    'github_repo': 'vyos-documentation',
    'github_version': _github_version,
    'conf_py_path': '/docs/',
    'gtm_id': os.environ.get('GTM_ID', ''),
    'cookiebot_id': os.environ.get('COOKIEBOT_ID', ''),
}

# sphinx-sitemap: baseurl already includes /en/rolling/, so skip lang+version
sitemap_url_scheme = '{link}'

# sphinx-llms-txt: disable the package's auto-generated index llms.txt.
# The curated llms.txt is rendered at build time from
# _templates/llms.txt.j2 by the _write_llms_txt() build-finished hook
# below; llms-full.txt is still auto-generated by sphinx-llms-txt.
llms_txt_file = False

# Custom sidebar templates, must be a dictionary that maps document names
# to template names.
#
# The default sidebars (for documents that don't match any pattern) are
# defined by theme itself.  Builtin themes are using these templates by
# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
# 'searchbox.html']``.
#
# html_sidebars = {}

# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
html_logo = '_static/images/vyos-logo.webp'

# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
html_favicon = '_static/images/vyos-logo-icon.png'

# The "title" for HTML documentation generated with Sphinx's own templates.
# This is appended to the `<title>` tag of individual pages, and used
# in the navigation bar as the "topmost" element.
html_title = f'{project} rolling release (current)'

# -- Options for HTMLHelp output ---------------------------------------------

# Output file base name for HTML help builder.
htmlhelp_basename = 'VyOSdoc'


# -- Options fo_r LaTeX output ------------------------------------------------

latex_elements = {
    # The paper size ('letterpaper' or 'a4paper').
    #
    # 'papersize': 'letterpaper',

    # The font size ('10pt', '11pt' or '12pt').
    #
    # 'pointsize': '10pt',

    # Additional stuff for the LaTeX preamble.
    #
    # 'preamble': '',

    # Latex figure (float) alignment
    #
    # 'figure_align': 'htbp',
    'preamble': r'''\def\changemargin#1#2{\list{}{\rightmargin#2\leftmargin#1}\item[]}
\let\endchangemargin=\endlist''',
    'classoptions': ',openany,oneside'
}

# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
#  author, documentclass [howto, manual, or own class]).
latex_documents = [
    (master_doc, 'VyOS.tex', u'VyOS Documentation',
     u'VyOS maintainers and contributors', 'manual'),
]

# The name of an image file (relative to this directory) to place at the top of
# the title page.
latex_logo = '_static/images/vyos-logo.png'

# -- Options for manual page output ------------------------------------------

# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
    (master_doc, 'vyos', u'VyOS Documentation',
     [author], 1)
]


# -- Options for Texinfo output ----------------------------------------------

# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
#  dir menu entry, description, category)
texinfo_documents = [
    (master_doc, 'VyOS', u'VyOS Documentation',
     author, 'VyOS', 'One line description of project.',
     'Miscellaneous'),
]


def _prefer_webp(app):
    """Prepend WebP to supported image types for HTML builders."""
    if app.builder.name in ('html', 'dirhtml', 'readthedocs'):
        types = app.builder.supported_image_types
        if 'image/webp' not in types:
            app.builder.supported_image_types = ['image/webp'] + types


def _write_llms_txt(app, exception):
    # Skip dirhtml: production publishes via the `html` / `readthedocs`
    # builders only. The `.md` links in the curated template do
    # actually resolve under `dirhtml` (`_copy_md_sources` puts `.md`
    # files at their source-relative paths regardless of builder), but
    # we still don't render llms.txt for builds we don't ship — local
    # `make dirhtml` is a developer convenience, not a publish target.
    if exception is not None or app.builder.name not in (
            'html', 'readthedocs'):
        return
    if not app.config.html_baseurl:
        # Fail loudly rather than rendering /quick-start.md etc. as a
        # silently-broken root-relative URL — every supported branch
        # sets html_baseurl, so a missing value is a regression.
        raise RuntimeError(
            'html_baseurl must be set to render llms.txt')
    from pathlib import Path
    from jinja2 import Environment, FileSystemLoader, StrictUndefined
    tpl_dir = Path(app.srcdir) / '_templates'
    out_path = Path(app.outdir) / 'llms.txt'
    baseurl = app.config.html_baseurl.rstrip('/') + '/'
    # FileSystemLoader + get_template (rather than from_string) makes
    # Jinja tracebacks reference the real template filename and line
    # number — useful when StrictUndefined trips on a typo in
    # llms.txt.j2. StrictUndefined: missing template variables raise
    # rather than silently render as empty strings, so a typo in
    # llms.txt.j2 fails the build instead of shipping a half-blank
    # llms.txt.
    env = Environment(
        loader=FileSystemLoader(str(tpl_dir)),
        undefined=StrictUndefined,
        keep_trailing_newline=True,
        # Plain-text template (not HTML), so HTML autoescape is not
        # appropriate. Setting autoescape=False explicitly to silence
        # bandit/ruff S701 and document the intent.
        autoescape=False,
    )
    template = env.get_template('llms.txt.j2')
    rendered = template.render(
        baseurl=baseurl,
        release=app.config.release,
    )
    out_path.write_text(rendered, encoding='utf-8')


def _copy_md_sources(app, exception):
    """Copy .md source files verbatim into the HTML output tree."""
    if exception is not None:
        return
    src = pathlib.Path(app.srcdir)
    out = pathlib.Path(app.outdir)
    for path in src.rglob("*.md"):
        # Skip files in excluded directories to prevent recursive nesting
        if any(part in {'_build', '_rst_legacy'} for part in path.parts):
            continue
        dest = out / path.relative_to(src)
        dest.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(path, dest)


def setup(app):
    app.connect('builder-inited', _prefer_webp)
    app.connect('build-finished', _copy_md_sources)
    app.connect('build-finished', _write_llms_txt)