# -*- coding: utf-8 -*-
"""
    :codeauthor: Pedro Algarvio (pedro@algarvio.me)


    saltautodoc.py
    ~~~~~~~~~~~~~~

    Properly handle ``__func_alias__``
"""

# Import Sphinx libs
from sphinx.ext.autodoc import FunctionDocumenter as FunctionDocumenter


class SaltFunctionDocumenter(FunctionDocumenter):
    """
    Simple override of sphinx.ext.autodoc.FunctionDocumenter to properly render
    salt's aliased function names.
    """

    def format_name(self):
        """
        Format the function name
        """
        if not hasattr(self.module, "__func_alias__"):
            # Resume normal sphinx.ext.autodoc operation
            return super(FunctionDocumenter, self).format_name()

        if not self.objpath:
            # Resume normal sphinx.ext.autodoc operation
            return super(FunctionDocumenter, self).format_name()

        if len(self.objpath) > 1:
            # Resume normal sphinx.ext.autodoc operation
            return super(FunctionDocumenter, self).format_name()

        # Use the salt func aliased name instead of the real name
        return self.module.__func_alias__.get(self.objpath[0], self.objpath[0])


def setup(app):
    def add_documenter(app, env, docnames):
        app.add_autodocumenter(SaltFunctionDocumenter)

    # add_autodocumenter() must be called after the initial setup and the
    # 'builder-inited' event, as sphinx.ext.autosummary will restore the
    # original documenter on 'builder-inited'
    app.connect("env-before-read-docs", add_documenter)