# -*- coding: utf-8 -*-
from __future__ import annotations

from music21 import common

_DOC_IGNORE_MODULE_OR_PACKAGE = True

# See converter/subConverters/ConverterIPython for more info.

def load_ipython_extension(ip):
    '''
    Load any necessary notebook extensions.  Currently just
    sets matplotlib to interactive mode.

    Formerly set image/png to display properly, but we now use the default
    display(Image(data)) in Jupyter.
    '''
    # This was used in the past to declare that when an IPythonPNGObject
    # was encountered then it should be displayed as 'image/png' by calling
    # the getData method on the object.  However, since at least music21 v6
    # we have used the standard IPython display(Image(data=...)) format.

    # pngFormatter = ip.display_formatter.formatters['image/png']
    # pngFormatter.for_type(music21.ipython21.objects.IPythonPNGObject,
    #                       music21.ipython21.objects.IPythonPNGObject.getData)

    # we still configure matplotlib to be inline by default.
    try:
        from matplotlib import pyplot as plt  # type: ignore
        plt.ion()  # enable interactive mode
        # get retina figures in matplotlib
        ip.run_line_magic('config', "InlineBackend.figure_format = 'retina'")
    except ImportError:
        pass


def inGoogleColabNotebook():
    if not common.runningInNotebook():
        return False
    try:
        # get_ipython is loaded into global scope in IPython and Google Colab
        # because we already returned False above, the NameError should never
        # be triggered, but better safe than sorry.  And helps type checkers.
        return get_ipython().__class__.__module__ == 'google.colab._shell'
    except NameError:
        return False

def notebookVersion():
    try:
        # noinspection PyPackageRequirements
        import notebook  # type: ignore
        return notebook._version.version_info
    except (ImportError, AttributeError):
        return (0, 0, 0)

def needsToLoadRequireJS():
    return inGoogleColabNotebook() or notebookVersion() >= (7, 0, 0)