import tkinter as tk
from tkinter import filedialog as fd
from tkinter import ttk


class PlotType:
    USER = 1
    PRESET = 2
    POINT = 3


class PresetPlot:
    LINE = 0
    PARABOLA = 1
    
    OPTIONS = ["ax + b = 0", "ax^2 + bx + c = 0"]


class PlotTypeFrame(tk.Frame):
    def __init__(self, master, plot_type_var, callback):
        super().__init__(master)
        self.master = master
        self.plot_type = plot_type_var
        self.callback = callback
        
        self.create_widgets()

    def create_widgets(self):
        #  self.frame = ttk.LabelFrame(self)
        #  self.frame["text"] = "Тип графика"
        self.frame = self

        self.preset_plot = ttk.Radiobutton(self.frame)
        self.preset_plot["variable"] = self.plot_type
        self.preset_plot["text"] = "Предустановленный"
        self.preset_plot["value"] = PlotType.PRESET
        self.preset_plot["command"] = self.callback
        self.preset_plot.grid(row=0, column=0, sticky=tk.W)
        #  self.preset_plot.pack(side=tk.TOP, expand=True)

        self.user_plot = ttk.Radiobutton(self.frame)
        self.user_plot["variable"] = self.plot_type
        self.user_plot["text"] = "Пользовательский"
        self.user_plot["value"] = PlotType.USER
        self.user_plot["command"] = self.callback
        self.user_plot.grid(row=1, column=0, sticky=tk.W)
        #  self.user_plot.pack(side=tk.TOP, sticky=tk.W)

        self.point_plot = ttk.Radiobutton(self.frame)
        self.point_plot["variable"] = self.plot_type
        self.point_plot["text"] = "По точкам"
        self.point_plot["value"] = PlotType.POINT
        self.point_plot["command"] = self.callback
        self.point_plot.grid(row=2, column=0, sticky=tk.W)

        self.preset_plot.invoke()

        #  self.frame.grid(row=0, column=0, rowspan=3, columnspan=1, ipadx=10)


class PresetPlotFrame(tk.Frame):
    def __init__(self, master, preset_type):
        super().__init__(master)
        self.master = master
        self.preset_type = preset_type

        self.create_widgets()

    def create_widgets(self):
        self.options = ttk.OptionMenu(
            self,
            self.preset_type,
            PresetPlot.OPTIONS[0],
            *PresetPlot.OPTIONS
        )
        self.options.grid(row=0, column=0, columnspan=1, rowspan=1, sticky=tk.NSEW)


class UserPlotFrame(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        self.master = master

        self.create_widgets()

    def create_widgets(self):
        pass


class PointPlotFrame(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        self.master = master

        self.create_widgets()

    def create_widgets(self):
        self.choose_file = tk.Button(self)
        self.choose_file["text"] = "Выбрать файл"
        self.choose_file["command"] = self.open_file
        self.choose_file.grid(row=0, column=0, sticky=tk.NSEW)
        
        self.filepath = tk.Entry(self)
        self.filepath.grid(row=1, column=0)

    def open_file(self):
        a = tk.filedialog.askopenfile()
        #  self.filepath.set(a.name)
        #  print(self.filepath.get())
        self.filepath.delete(0, tk.END)
        self.filepath.insert(0, a.name)
        print(a)


class App(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        #  self.geometry("400x250")

        self.grid(row=0, column=0, columnspan=2, rowspan=4)
        self.grid_columnconfigure(0, weight=1, uniform="foo")
        self.grid_columnconfigure(1, weight=1, uniform="foo")
        self.create_widgets()

    def create_widgets(self):
        # Создаём фреймы с настройкой выбранного типа графика
        self.preset_type = tk.IntVar()

        self.cfg_pt = {
            "row": 0, "column": 1, 
            "rowspan": 3, "columnspan": 1,
            "padx": 10, "pady": 10,
            "sticky": tk.NSEW
        }

        self.right_frame = ttk.LabelFrame(self)
        self.right_frame["text"] = "Настройка графика"
        self.right_frame.grid(**self.cfg_pt)

        self.preset_plot_frame = PresetPlotFrame(self.right_frame, self.preset_type)
        self.user_plot_frame = UserPlotFrame(self.right_frame)
        self.point_plot_frame = PointPlotFrame(self.right_frame)

        #  self.preset_plot_frame.pack(side=tk.RIGHT)
        self.pw = {
            PlotType.PRESET: self.preset_plot_frame,
            PlotType.USER:   self.user_plot_frame,
            PlotType.POINT:  self.point_plot_frame,
        }

        # Фрейм с выбором типа графика
        self.left_frame = ttk.LabelFrame(self)
        self.left_frame["text"] = "Тип графика"
        self.left_frame.grid(row=0, column=0, rowspan=3, columnspan=1, padx=10, pady=10, sticky=tk.NSEW)

        self.plot_type = tk.IntVar()

        self.w_plot_type = PlotTypeFrame(
            self.left_frame,
            self.plot_type, 
            self.change_plot_type
        )
        self.w_plot_type.grid(row=0, column=0, rowspan=3, padx=3, pady=3)

        #############################

        self.change_plot_type()

        self.submit_btn = tk.Button(self)
        self.submit_btn["text"] = "Построить график"
        #  self.submit_btn.grid(row=3, column=0, columnspan=2, padx=10, pady=10, sticky=tk.W)
        self.submit_btn.grid(row=3, column=0, columnspan=2, padx=10, pady=10, sticky=tk.NSEW)

    def change_plot_type(self):
        cur_type = self.plot_type.get()
        for ptype, widget in self.pw.items():
            if cur_type == ptype:
                widget.grid(column=0, row=0, padx=10, pady=10)
            else:
                widget.grid_forget()


if __name__ == "__main__":
    root = tk.Tk()
    app = App(root)
    root.mainloop()