# decompiler.py
#
# Copyright 2021 James Westman <james@jwestman.net>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# SPDX-License-Identifier: LGPL-3.0-or-later

from . import tokenizer

OPENING_TOKENS = ["{"]
CLOSING_TOKENS = ["}"]
NEWLINE_AFTER = [";", "]"] + OPENING_TOKENS + CLOSING_TOKENS


class Format:
    def format(data):
        indent_levels = 0
        tokens = tokenizer.tokenize(data)
        tokenized_str = ""

        for item in tokens:
            if item.type != tokenizer.TokenType.WHITESPACE:
                if str(item) in OPENING_TOKENS:
                    split_string = tokenized_str.splitlines()
                    split_string.insert(-1, "")
                    tokenized_str = "\n".join(split_string)

                    indent_levels += 1

                elif str(item) in CLOSING_TOKENS:
                    tokenized_str = tokenized_str[:-2]
                    indent_levels -= 1

                tokenized_str += str(item)

                if str(item) in NEWLINE_AFTER:
                    tokenized_str += "\n"
                    tokenized_str += indent_levels * "  "

            else:
                if tokenized_str == tokenized_str.strip():
                    tokenized_str += " "

        print(tokenized_str)  # TODO: Remove this when the MR is ready to be merged

        return tokenized_str