import sys
from io import StringIO
import xml

import yaml
import ast_parser
from ast_generator.ast_generator import *
from ast_parser.gaz_unparser import *
from ast_parser.python_unparser import PythonUnparser
import inspect


class GazpreaFuzzer:
    def __init__(self, config: str):
        # parse a yaml config file with path in config
        # and set the appropriate parameters
        with open(config) as yaml_file:
            settings: dict = yaml.safe_load(yaml_file)
        self.settings = settings

        self.gaz_source_gen = None
        self.generator = AstGenerator(settings)

        self.ast = None
        self.source = None
        self.ground_truth = None
        self.out = None

    def fuzz(self):
        self.generator.generate_ast()
        self.write_ast()

        self.gaz_source_gen = GazUnparser(self.generator.ast, True)
        self.gaz_source_gen.unparse()

        self.ast = self.generator.ast
        self.source = self.gaz_source_gen.source

        self.python_source_gen = PythonUnparser(self.generator.ast, True)
        self.python_source_gen.unparse()

        self.ground_truth = self.python_source_gen.source
        output = StringIO()
        sys.stdout = output
        exec(self.ground_truth)
        self.out = output.getvalue()

    def write_ast(self):
        dom = xml.dom.minidom.parseString(ET.tostring(self.generator.ast).decode('utf-8'))
        pretty: str = dom.toprettyxml()

        randint = random.randint(0, 1000)
        print(randint)
        with open("debug/ast/debug_{}.xml".format(randint), 'w') as f:
            f.write(pretty)