import re


class ParseApiUtilsFile:
    def __init__(self, filename: str):
        with open(filename, 'r') as file:
            # Read the contents of the file
            self.file_contents = file.read()

        self.variables = dict()

        self.get_variables_data()

    def get_response(self, keyword):
        string = self.get_substring(initial_string=keyword, final_string='RETURN', include=True)
        index = string.find('    ${response}')
        string = string[index:]
        string = string.split('\n')

        index = None
        for i, item in enumerate(string):
            if 'response' in item:
                regex = "\s{4}\$\{response\}=\s{4}(.*)"
                match = re.match(pattern=regex, string=item)

                if match:
                    verb = match.groups()[0]
            elif 'url' in item:
                url = item.split('/')[1]

        return verb, url

    def get_variables_data(self):
        string = self.get_substring(initial_string='*** Variables ***\n', final_string='*** ', include=False)

        regex = "(\$\{.*\})\s*(.*)\n"

        matches = re.finditer(regex, string, re.MULTILINE)
        for match in matches:
            # Check that we have two groups matched
            if len(match.groups()) == 2:
                if match.group(1) not in self.variables.keys():
                    self.variables[match.group(1)] = match.group(2)
            else:
                print("Error, the variable is not following the format ${thing} = <value>")

    def get_substring(self, initial_string: str, final_string: str, include: bool) -> str:
        index_start = self.file_contents.find(initial_string)

        if include:
            string = self.file_contents[index_start:]
        else:
            string = self.file_contents[index_start+len(initial_string):]

        index_end = string.find(final_string)
        string = string[:index_end]

        return string