import tkinter as tk
import tkinter.font as tfont
from tkinter import ttk
from tkinter import scrolledtext as tst
from controller.HomeController import HomeController

class HomeView(ttk.Frame):
    """
        View - MainWindow

    dec...

    @author     Jérémi Nihart / EndMove
    @link       https://git.endmove.eu/EndMove/WebPicDownloader
    @version    1.0.0
    @since      2022-08-30
    """
    # Variables
    __controller: HomeController = None

    # Constructor
    def __init__(self, parent, controller: HomeController):
        super().__init__(parent)

        # Init view
        self.__init_content()

        # Save and setup main controller
        self.__controller = controller
        controller.set_view(self)
    
    # START Internal function
    def __init_content(self) -> None:
        """
            [internal function]
        => Initialize the view content.
        """
        self.columnconfigure(0, weight=1)
        self.columnconfigure(1, weight=3)

        # Website link
        self.web_label = ttk.Label(self, text="Website URL:")
        self.web_label.grid(row=0, column=0, sticky=tk.W, padx=5, pady=5)
        self.web_entry = ttk.Entry(self, width=50)  # show="-"
        self.web_entry.grid(row=0, column=1, sticky=tk.E, padx=5, pady=5, ipadx=2, ipady=2)

        # Download name
        self.name_label = ttk.Label(self, text="Download Name:")
        self.name_label.grid(row=1, column=0, sticky=tk.W, padx=5, pady=5)
        self.name_entry = ttk.Entry(self, width=50)
        self.name_entry.grid(row=1, column=1, sticky=tk.E, padx=5, pady=5, ipadx=2, ipady=2)

        # Logs area
        log_textarea_font = tfont.Font(size=10)
        self.log_textarea = tst.ScrolledText(self, font=log_textarea_font, wrap=tk.WORD, state=tk.DISABLED, width=40, height=8)#, font=("Times New Roman", 15))
        self.log_textarea.grid(row=3, column=0, columnspan=2, sticky=tk.EW, pady=10, padx=10)

        self.message_label = ttk.Label(self, text='message label')

        # Download button
        self.download_button = ttk.Button(self, text="Start downloading", command=self.__event_button_download)
        self.download_button.grid(row=5, column=1, sticky=tk.E, padx=5, pady=5, ipadx=5, ipady=2)

    def __event_button_download(self) -> None:
        """
            [internal function]
        => Function called when a download is requested.
        """
        self.__controller.on_download_requested(self.web_entry.get(), self.name_entry.get())
    # END Internal function

    # START Controller methods
    def add_log(self, line: str) -> None:
        """
            [function for controller]
            TODO desc
        """
        self.log_textarea.configure(state=tk.NORMAL)
        self.log_textarea.insert(tk.END, f"~ {line}\n")
        self.log_textarea.see(tk.END)
        self.log_textarea.configure(state=tk.DISABLED)

    def clear_logs(self) -> None:
        """
            [function for controller]
            TODO desc
        """
        self.log_textarea.configure(state=tk.NORMAL)
        self.log_textarea.delete('1.0', tk.END)
        self.log_textarea.configure(state=tk.DISABLED)
    
    def show_error_message(self, message) -> None:
        """
            [function for controller]
            TODO desc
        """
        self.message_label.configure(text=message, foreground='red')
        self.message_label.grid(row=4, column=0, columnspan=2, sticky=tk.NS, padx=2, pady=2)
        self.message_label.after(30000, self.hide_message)

    def show_success_message(self, message) -> None:
        """
            [function for controller]
            TODO desc
        """
        self.message_label.configure(text=message, foreground='green')
        self.message_label.grid(row=4, column=0, columnspan=2, sticky=tk.NS, padx=2, pady=2)
        self.message_label.after(30000, self.hide_message)

    def hide_message(self) -> None:
        """
            [function for controller]
            TODO desc
        """
        self.message_label.grid_forget()
    # END Controller methods