from yaml import load, dump
try:
    from yaml import CLoader as Loader, CDumper as Dumper
except ImportError:
    from yaml import Loader, Dumper

class SettingManager:
    instance = None

    def __init__(self):
        try:
            with open('config.yml', 'r') as f:
                self.settings = load(f.read(), Loader=Loader)      
        except FileNotFoundError:
            self.settings = {}
            self.createInitialSettings()

    @staticmethod
    def get_instance():
        if SettingManager.instance is None:
            SettingManager.instance = SettingManager()
        return SettingManager.instance


    def save(self):
        with open('config.yml', 'w') as f:
            f.write(dump(self.settings, Dumper=Dumper))

    def createInitialSettings(self):
        self.settings['version'] = "1.0.0"
        self.settings['name'] = 'Analyse Morphologique'
        self.settings['authors'] = 'Alexis Doghmane <alexis@doghmane.fr>, Djalim Simaila <djalim.simaila@inrae.fr>'
        self.settings['description'] = 'Analyse Morphologique'
        self.settings['repo'] = 'https://forgemia.inra.fr/scanner3d/analysemorphologique'
        self.settings['lastGraph'] = ["Aucun" for i in range(11)]
        self.settings['discretisation_method'] = 'Z0-Zi >= DeltaZ' # 'Z0-Zi < DeltaZ'
        self.settings['raw_data_suffix'] = '_delta_{delta_z}_analyse_brute'
        self.settings['discrete_data_suffix'] = '_delta_{delta_z}_analyse_rayon'
        self.settings['output_file_extention'] = '.txt'
        self.settings['output_file_separator'] = '\t'
        self.settings['pretiffy_output_file'] = True
        self.save()

    def get_last_graph(self, graph_number):
        return self.settings['lastGraph'][graph_number]

    def set_last_graph(self, graph_number, graph_name):
        self.settings['lastGraph'][graph_number] = graph_name
        self.save()

    def get_setting(self, setting_name):
        return self.settings[setting_name]
    
    def get_settings(self):
        return self.settings
    
    def set_setting(self, setting_name, setting_value):
        self.settings[setting_name] = setting_value
        self.save()