# -*- coding: utf-8 -*-

from jinja2 import Environment, FileSystemLoader
import os


class Parameter:
    def __init__(self, name, type, defValue="", comment=""):
        """Property of a data structure

        Parameters
        ----------
        name : str
           name of the property
        type : str
           type of the property
        defValue : str
           default value the property should be initialized with
        comment : str
           comment appended to the properties in the header file
        """

        self.name = name
        self.type = type
        self.defValue = defValue
        self.comment = comment

    def __str__(self):
        return "name: {}, type: {}, defValue: {} \\\\{}".format(self.name, self.type, self.defValue, self.comment)


class Config:
    def __init__(self):
        self.parameters = []

    def parameter_exists(self, name):
        for v in self.parameters:
            if v.name == name:
                return True
        return False

    def add_parameter(self, name, type, defValue, comment):
        if self.parameter_exists(name):
            print("parameters already added: " + name)
        else:
            self.parameters.append(Parameter(name, type, defValue, comment))

    def generate_file(self, template):
        context = dict()
        context["parameters"] = self.parameters

        path = ""
        filename = template.replace(".templ", "")
        dirname = os.path.dirname(__file__)
        env = Environment(loader=FileSystemLoader(dirname))
        print("generating: " + path + filename)
        with open(path + filename, "wb") as fout:
            content = env.get_template(template).render(context)
            fout.write(content.encode('utf8'))

    def generate(self):
        print("=" * 90)
        print("Config File:")
        print("")
        print("{0: <30}{1: <30}{2: <30}".format("Name", "Type", "Def. Value"))
        print("=" * 90)
        for param in self.parameters:
            print("{0: <30.29}{1: <30.29}{2: <30.29}".format(param.name, param.type, param.defValue))
        print("=" * 90)

        self.generate_file("FilmSpecimen.templ.h")
        self.generate_file("FilmSpecimen.templ.cpp")