import tkinter

from .ctk_canvas import CTkCanvas
from ..theme_manager import ThemeManager
from ..draw_engine import DrawEngine
from .widget_base_class import CTkBaseClass


class CTkTextbox(CTkBaseClass):
    def __init__(self, *args,
                 bg_color=None,
                 fg_color="default_theme",
                 border_color="default_theme",
                 border_width="default_theme",
                 corner_radius="default_theme",
                 text_font="default_theme",
                 text_color="default_theme",
                 width=200,
                 height=200,
                 **kwargs):

        # transfer basic functionality (bg_color, size, _appearance_mode, scaling) to CTkBaseClass
        if "master" in kwargs:
            super().__init__(*args, bg_color=bg_color, width=width, height=height, master=kwargs.pop("master"))
        else:
            super().__init__(*args, bg_color=bg_color, width=width, height=height)

        # color
        self.fg_color = ThemeManager.theme["color"]["entry"] if fg_color == "default_theme" else fg_color
        self.border_color = ThemeManager.theme["color"]["frame_border"] if border_color == "default_theme" else border_color
        self.text_color = ThemeManager.theme["color"]["text"] if text_color == "default_theme" else text_color

        # shape
        self.corner_radius = ThemeManager.theme["shape"]["frame_corner_radius"] if corner_radius == "default_theme" else corner_radius
        self.border_width = ThemeManager.theme["shape"]["frame_border_width"] if border_width == "default_theme" else border_width

        # text
        self.text_font = (ThemeManager.theme["text"]["font"], ThemeManager.theme["text"]["size"]) if text_font == "default_theme" else text_font

        # configure 1x1 grid
        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure(0, weight=1)

        self.canvas = CTkCanvas(master=self,
                                highlightthickness=0,
                                width=self.apply_widget_scaling(self._current_width),
                                height=self.apply_widget_scaling(self._current_height))
        self.canvas.grid(row=0, column=0, padx=0, pady=0, rowspan=1, columnspan=1, sticky="nsew")
        self.canvas.configure(bg=ThemeManager.single_color(self.bg_color, self._appearance_mode))
        self.draw_engine = DrawEngine(self.canvas)

        for arg in ["highlightthickness", "fg", "bg", "font", "width", "height"]:
            kwargs.pop(arg, None)
        self.textbox = tkinter.Text(self,
                                    fg=ThemeManager.single_color(self.text_color, self._appearance_mode),
                                    width=0,
                                    height=0,
                                    font=self.text_font,
                                    highlightthickness=0,
                                    relief="flat",
                                    insertbackground=ThemeManager.single_color(("black", "white"), self._appearance_mode),
                                    bg=ThemeManager.single_color(self.fg_color, self._appearance_mode),
                                    **kwargs)
        self.textbox.grid(row=0, column=0, padx=self.corner_radius, pady=self.corner_radius, rowspan=1, columnspan=1, sticky="nsew")

        self.bind('<Configure>', self.update_dimensions_event)
        self.draw()

    def set_scaling(self, *args, **kwargs):
        super().set_scaling(*args, **kwargs)

        self.textbox.configure(font=self.apply_font_scaling(self.text_font))
        self.canvas.configure(width=self.apply_widget_scaling(self._desired_width), height=self.apply_widget_scaling(self._desired_height))
        self.draw()

    def set_dimensions(self, width=None, height=None):
        super().set_dimensions(width, height)

        self.canvas.configure(width=self.apply_widget_scaling(self._desired_width),
                              height=self.apply_widget_scaling(self._desired_height))
        self.draw()

    def draw(self, no_color_updates=False):

        requires_recoloring = self.draw_engine.draw_rounded_rect_with_border(self.apply_widget_scaling(self._current_width),
                                                                             self.apply_widget_scaling(self._current_height),
                                                                             self.apply_widget_scaling(self.corner_radius),
                                                                             self.apply_widget_scaling(self.border_width))

        if no_color_updates is False or requires_recoloring:
            if self.fg_color is None:
                self.canvas.itemconfig("inner_parts",
                                       fill=ThemeManager.single_color(self.bg_color, self._appearance_mode),
                                       outline=ThemeManager.single_color(self.bg_color, self._appearance_mode))
            else:
                self.canvas.itemconfig("inner_parts",
                                       fill=ThemeManager.single_color(self.fg_color, self._appearance_mode),
                                       outline=ThemeManager.single_color(self.fg_color, self._appearance_mode))

            self.canvas.itemconfig("border_parts",
                                   fill=ThemeManager.single_color(self.border_color, self._appearance_mode),
                                   outline=ThemeManager.single_color(self.border_color, self._appearance_mode))
            self.canvas.configure(bg=ThemeManager.single_color(self.bg_color, self._appearance_mode))

            self.textbox.configure(fg=ThemeManager.single_color(self.text_color, self._appearance_mode),
                                   bg=ThemeManager.single_color(self.fg_color, self._appearance_mode),
                                   insertbackground=ThemeManager.single_color(("black", "white"), self._appearance_mode))

        self.canvas.tag_lower("inner_parts")
        self.canvas.tag_lower("border_parts")

    def yview(self, *args):
        return self.textbox.yview(*args)

    def xview(self, *args):
        return self.textbox.xview(*args)

    def insert(self, *args, **kwargs):
        return self.textbox.insert(*args, **kwargs)

    def focus(self):
        return self.textbox.focus()

    def tag_add(self, *args, **kwargs):
        return self.textbox.tag_add(*args, **kwargs)

    def tag_config(self, *args, **kwargs):
        return self.textbox.tag_config(*args, **kwargs)

    def tag_configure(self, *args, **kwargs):
        return self.textbox.tag_configure(*args, **kwargs)

    def tag_remove(self, *args, **kwargs):
        return self.textbox.tag_remove(*args, **kwargs)

    def configure(self, require_redraw=False, **kwargs):
        if "fg_color" in kwargs:
            self.fg_color = kwargs.pop("fg_color")
            require_redraw = True

            # check if CTk widgets are children of the frame and change their bg_color to new frame fg_color
            for child in self.winfo_children():
                if isinstance(child, CTkBaseClass):
                    child.configure(bg_color=self.fg_color)

        if "border_color" in kwargs:
            self.border_color = kwargs.pop("border_color")
            require_redraw = True

        if "corner_radius" in kwargs:
            self.corner_radius = kwargs.pop("corner_radius")
            require_redraw = True

        if "border_width" in kwargs:
            self.border_width = kwargs.pop("border_width")
            require_redraw = True

        if "width" in kwargs:
            self.set_dimensions(width=kwargs.pop("width"))

        if "height" in kwargs:
            self.set_dimensions(height=kwargs.pop("height"))

        if "bg_color" in kwargs:
            super().configure(bg_color=kwargs.pop("bg_color"), require_redraw=require_redraw)
        else:
            super().configure(require_redraw=require_redraw)

        self.textbox.configure(**kwargs)
