from ScEpTIC.analysis.options import AnalysisResultFormat
from ScEpTIC.config.base_config import ScEpTICBaseConfig
from ScEpTIC.analysis import CONFIG_FUNCTION_NAME

class AnalysisConfig(ScEpTICBaseConfig):
    """
    Configuration for AST Transformations
    """
    _config_domain = {
        'enabled_analysis': {'class': str, 'mode': 'add'},
        'save_results': {'class': bool, 'mode': 'set'},
        'results_formats': {'class': AnalysisResultFormat, 'mode': 'add'},
    }


    def __init__(self, main_config):
        super().__init__(main_config)

        self.__default_removed = False

        self.enabled_analysis = []
        self.save_results = True
        self.results_formats = [AnalysisResultFormat.JSON, AnalysisResultFormat.TEXT]

        self._register_config_callback("enabled_analysis", self._analysis_callback)
        self._register_config_callback("results_formats", self._results_format_callback)

    def _analysis_callback(self, config_name, config_value):
        """
        Callback to add an analysis configuration
        :param config_name: the configuration name
        :param config_value: the configuration value
        """
        module_name = 'ScEpTIC.analysis.{}.config'.format(config_value)
        module = __import__(module_name, fromlist=[CONFIG_FUNCTION_NAME])
        config = getattr(module, CONFIG_FUNCTION_NAME)
        setattr(self, config_value, config(self._main_config))


    def _results_format_callback(self, config_name, config_value):
        """
        Removes the defaults results formats and ensures that no duplicates are in the list.
        :param config_name: the configuration name
        :param config_value: the configuration value
        """

        if not self.__default_removed:
            self.__default_removed = True

            # Remove the default values and keep the added one
            self.results_formats = [self.results_formats[-1]]

        # Avoid duplicates when saving. Not an elegant solution, but works and keeps the generality of the "add" mode.
        self.results_formats = list(set(self.results_formats))