# Configuration file for the Sphinx documentation builder.
#
# This file only contains a selection of the most common options. For a full
# list see the documentation:
# https://www.sphinx-doc.org/en/master/usage/configuration.html

# -- 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 docutils
import os
import re
import requests

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

project = "OpenROAD Flow"
copyright = "The Regents of the University of California, 2021"
author = "OpenROAD Team"


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

# 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.autodoc",
    "sphinx.ext.ifconfig",
    "sphinx.ext.mathjax",
    "sphinx.ext.napoleon",
    "sphinx.ext.todo",
    "sphinx_external_toc",
    "sphinx_copybutton",
    "myst_parser",
    "sphinxcontrib.mermaid",
    "sphinx_llm.txt",
]

myst_enable_extensions = [
    "amsmath",
    "colon_fence",
    "deflist",
    "dollarmath",
    "html_admonition",
    "html_image",
    "replacements",
    "smartquotes",
    "substitution",
    "tasklist",
    "html_image",
]

external_toc_path = "toc.yml"

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

# The suffix(es) of source filenames.
# You can specify multiple suffix as a list of string:
source_suffix = [".md"]

# The master toctree document.
master_doc = "index2.md"

# 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 = [
    "_build",
    "Thumbs.db",
    ".DS_Store",
    "**/LICENSE",
    "**/LICENSE.md",
    "README.md",
    "docs/releases/PostAlpha2.1BranchMethodology.md",
    "main",
    "index.md",
    "contrib/GitGuideAdapter.md",
]

# The name of the Pygments (syntax highlighting) style to use.
pygments_style = None


# -- 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_book_theme"

html_theme_options = {
    "repository_url": "https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts",
    "repository_branch": "master",
    "show_navbar_depth": 2,
    "use_issues_button": True,
    "use_download_button": True,
    # list for more fine-grained ordering of icons
    "icon_links": [
        {
            "name": "The OpenROAD Project",
            "url": "https://theopenroadproject.org/",
            "icon": "fa-solid fa-globe",
        },
        {
            "name": "Twitter",
            "url": "https://twitter.com/OpenROAD_EDA",
            "icon": "fa-brands fa-twitter",
        },
        {
            "name": "Email",
            "url": "mailto:openroad@ucsd.edu",
            "icon": "fa-solid fa-envelope",
        },
        {
            "name": "GitHub",
            "url": "https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts",
            "icon": "fa-brands fa-github",
        },
        {
            "name": "Stars",
            "url": "https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/stargazers",
            "icon": "https://img.shields.io/github/stars/The-OpenROAD-Project/OpenROAD-flow-scripts",
            "type": "url",
        },
    ],
}

# 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".


def get_file_from_url(url, fname):
    r = requests.get(url)
    with open(fname, "wb") as f:
        f.write(r.content)


def swap_prefix(file, old, new):
    with open(file, "r") as f:
        lines = f.read()
    lines = lines.replace(old, new)
    with open(file, "wt") as f:
        f.write(lines)


def setup(app):
    import shutil

    # symlink does not work for ORFS because of long recursive file links
    shutil.copy("../README.md", "mainREADME.md")
    swap_prefix("mainREADME.md", "```mermaid", "```{mermaid}\n:align: center\n")

    # Grab the reference file from OR
    url = "https://raw.githubusercontent.com/The-OpenROAD-Project/OpenROAD/master/docs/contrib/GitGuide.md"
    get_file_from_url(url, "contrib/GitGuide.md")

    # Temporarily using commit number, will change once OR commit merged.
    url = "https://raw.githubusercontent.com/The-OpenROAD-Project/OpenROAD/master/docs/index.md"
    get_file_from_url(url, "SupportedOS.md")

    # Adapt the downloaded GitGuide for ORFS: rename references and inject
    # ORFS-specific submodule forking instructions from GitGuideAdapter.md.
    with open("contrib/GitGuide.md", "r") as f:
        content = f.read()
    content = (
        content.replace(
            "user/Build.md", "../index.md#build-or-installing-orfs-dependencies"
        )
        .replace("OpenROAD", "OpenROAD-flow-scripts")
        .replace("The-OpenROAD-flow-scripts", "The-OpenROAD")
    )
    with open("contrib/GitGuideAdapter.md", "r") as f:
        adapter_content = f.read()
    content = content.replace(
        "## Creating a branch", adapter_content + "\n## Creating a branch"
    )
    with open("contrib/GitGuide.md", "w") as f:
        f.write(content)

    # Create a copy of the index.md file
    import shutil

    shutil.copy("index.md", "index2.md")

    # Use re to find the desired content
    start_pattern = "## Supported Operating Systems"
    end_pattern = "## Code of conduct"
    with open("SupportedOS.md", "r") as f:
        markdown_content = f.read()

    match = re.search(f"{start_pattern}(.*?){end_pattern}", markdown_content, re.DOTALL)

    assert match is not None, "No match found, check the OR Doc pattern on index.md"
    extracted_content = match.group(1)
    extracted_content = "\n#### Supported Operating Systems" + extracted_content
    print(extracted_content)

    # Find insert position
    with open("index2.md", "r") as f:
        existing_content = f.read()
    match = re.search(r"### Setup", existing_content)
    assert match is not None, "Check search keyword."
    with open("index2.md", "w") as f:
        insert_position = match.end() + 1
        before_insert = existing_content[:insert_position]
        after_insert = existing_content[insert_position:]

        # Combine the parts with the extracted content
        updated_content = before_insert + extracted_content + after_insert

        f.write(updated_content)

    # Get Manpage file
    url = "https://raw.githubusercontent.com/The-OpenROAD-Project/OpenROAD/master/src/utl/README.md"
    get_file_from_url(url, "Manpage.md")