import tkinter as tk
from tkinter import font
from tkinter import ttk
from webpicdownloader.controller.Frames import Frames
from webpicdownloader.controller.InfoController import InfoController
from webpicdownloader.view.MainWindow import MainWindow


class InfoView(ttk.Frame):
    """
        View - InfoWindow

    This view displays information about the program, as well as its version and release date.

    @author     Jérémi Nihart / EndMove
    @link       https://git.endmove.eu/EndMove/WebPicDownloader
    @version    1.0.0
    @since      2022-09-06
    """
    # Variables
    __controller: InfoController = None

    # Constructor
    def __init__(self, parent: MainWindow, controller: InfoController):
        """
            Constructor

        * :parent: -> The main windows container.
        * :controller: -> The view controller
        """
        super().__init__(parent)

        # Init view
        self.__init_content()

        # Save and setup controller
        self.__controller = controller
        controller.set_view(self)

    # START Internal functions
    def __init_content(self) -> None:
        """
            [internal function]
        => Initialize the view content.
        """
        self.columnconfigure(0, weight=4)

        # Back button
        self.back_button = ttk.Button(self, text="Back", command=self.__event_button_back)
        self.back_button.grid(row=0, column=0, sticky=tk.E, padx=5, pady=5, ipadx=1, ipady=1)

        # About title
        self.title_label_font = font.Font(self, size=16, weight=font.BOLD)
        self.title_label = ttk.Label(self, text="A title", font=self.title_label_font)
        self.title_label.grid(row=1, column=0, sticky=tk.NS, padx=2, pady=2)

        # About content
        self.content_label_font = font.Font(self, size=10)
        self.content_label = ttk.Label(self, wraplength=400, justify='center', text='A long text', font=self.content_label_font, foreground='blue')
        self.content_label.grid(row=2, column=0, sticky=tk.NS)

        # About version
        self.version_label = ttk.Label(self, text='version : 1.0.0 - 02-02-2022')
        self.version_label.grid(row=3, column=0, sticky=tk.NS, pady=15)

    def __event_button_back(self) -> None:
        """
            [internal function]
        => Function called when back button pressed.
        """
        self.__controller.on_change_view(Frames.HOME)
    # END Internal functions

    # START Controller methods
    def set_title(self, title: str) -> None:
        """
            [function for controller]
        => Define view/page info : title

        * :title: -> Title for the view.
        """
        self.title_label.configure(text=title)

    def set_content(self, content: str) -> None:
        """
            [function for controller]
        => Define view/page info : content

        * :content: -> Content for the view.
        """
        self.content_label.configure(text=content)

    def set_version(self, version: str) -> None:
        """
            [function for controller]
        => Define view/page info : version

        * :version: -> Version for the view.
        """
        self.version_label.configure(text=version)
    # END Controller methods