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#!/usr/bin/env python3
# encoding: utf-8

"""Helper module with naming rules  for the C# binding."""

import os
import sys

# Hackish way of detecting pyolian...
script_path = os.path.dirname(os.path.realpath(__file__))

if "EFL_DIR" in os.environ:
    root_path = os.environ["EFL_DIR"]
else:
    root_path = os.path.abspath(os.path.join(script_path, "..", "..", ".."))

sys.path.insert(0, os.path.join(root_path, "src", "scripts"))

from pyolian import eolian


def remove_underlines(name):
    """Removes underlines from name"""
    return name.replace("_", "")


def managed_name(name):
    """Replaces underlines and capitalize first letter of each word"""

    words = name.split("_")
    return "".join(word[0].upper() + word[1:] for word in words)


def managed_namespaces(namespaces):
    """Converts an eolian list of namespaces into the managed namespace"""
    return ".".join(remove_underlines(nsp) for nsp in namespaces)


def class_managed_name(cls):
    """Gets the full managed name of the given eolian class"""
    ret = managed_namespaces(cls.namespaces)

    if ret:
        ret += "."

    if cls.type in (eolian.Eolian_Class_Type.INTERFACE, eolian.Eolian_Class_Type.MIXIN):
        ret += "I"

    ret += remove_underlines(cls.short_name)

    if ret == "Efl.Class":
        return "System.Type"

    return ret


def type_managed_name(type):
    """Gets the full managed name of a given type."""
    if type.type == eolian.Eolian_Type_Type.CLASS:
        return class_managed_name(type.class_)

    ret = managed_namespaces(type.namespaces)

    if ret:
        ret += "."

    ret += remove_underlines(type.short_name)

    return ret


# Need to pass the class as it is not accessible from Event in Pyolian
def event_args_managed_name(event, cls):
    """Gets the full managed name of the event arguments struct"""
    if event.type is None:
        return "System.EventArgs"

    ret = class_managed_name(cls)

    return ret + managed_name(event.myname) + "EventArgs"


def event_managed_short_name(event):
    """Gets the managed short name of an event"""

    return managed_name(event.name.replace(",", "_")) + "Event"


def enum_field_managed_name(field):
    """Gets the managed name of an Enum field"""

    return managed_name(field.name)