import shutil
import json
from uuid import uuid4
from pathlib import Path
import ttkbootstrap as ttk
from tkinter import Frame
from tkinter.colorchooser import askcolor
from tkinter.filedialog import askopenfilename, asksaveasfilename
from ttkbootstrap.themes import standard, user
from ttkbootstrap.style import ThemeDefinition
from ttkbootstrap.constants import *
from ttkbootstrap.dialogs import Messagebox


class ThemeCreator(ttk.Window):
    def __init__(self):
        super().__init__("TTK Creator")
        self.configure_frame = ttk.Frame(self, padding=(10, 10, 5, 10))
        self.configure_frame.pack(side=LEFT, fill=BOTH, expand=YES)
        self.demo_frame = ttk.Frame(self, padding=(5, 10, 10, 10))
        self.demo_frame.pack(side=LEFT, fill=BOTH, expand=YES)
        self.setup_theme_creator()
        self.demo_widgets = DemoWidgets(self, self.style)
        self.demo_widgets.pack(fill=BOTH, expand=YES)

    def setup_theme_creator(self):
        # application menu
        self.menu = ttk.Menu()
        self.menu.add_command(label="Save", command=self.save_theme)
        self.menu.add_command(label="Reset", command=self.change_base_theme)
        self.menu.add_command(label="Import", command=self.import_user_themes)
        self.menu.add_command(label="Export", command=self.export_user_themes)
        self.configure(menu=self.menu)

        # theme configuration settings
        ## user theme name
        f1 = ttk.Frame(self.configure_frame, padding=(5, 2))
        ttk.Label(f1, text="name", width=12).pack(side=LEFT)
        self.theme_name = ttk.Entry(f1)
        self.theme_name.insert(END, "new theme")
        self.theme_name.pack(side=LEFT, fill=X, expand=YES)
        f1.pack(fill=X, expand=YES)

        ## base theme
        f2 = ttk.Frame(self.configure_frame, padding=(5, 2))
        ttk.Label(f2, text="base theme", width=12).pack(side=LEFT)
        self.base_theme = ttk.Combobox(f2, values=self.style.theme_names())
        self.base_theme.insert(END, "litera")
        self.base_theme.pack(side=LEFT, fill=X, expand=YES)
        f2.pack(fill=X, expand=YES, pady=(0, 15))
        self.base_theme.bind("<<ComboboxSelected>>", self.change_base_theme)

        ## color options
        self.color_rows = []
        for color in self.style.colors.label_iter():
            row = ColorRow(self.configure_frame, color, self.style)
            self.color_rows.append(row)
            row.pack(fill=BOTH, expand=YES)
            row.bind("<<ColorSelected>>", self.create_temp_theme)

    def create_temp_theme(self, *_):
        """Creates a temp theme using the current configure settings and
        changes the theme in tkinter to that new theme.
        """
        themename = "temp_" + str(uuid4()).replace("-", "")[:10]
        colors = {}
        for row in self.color_rows:
            colors[row.label["text"]] = row.color_value
        definition = ThemeDefinition(themename, colors, self.style.theme.type)
        self.style.register_theme(definition)
        self.style.theme_use(themename)
        self.update_color_patches()

    def change_base_theme(self, *_):
        """Sets the initial colors used in the color configuration"""
        themename = self.base_theme.get()
        self.style.theme_use(themename)
        self.update_color_patches()

    def update_color_patches(self):
        """Updates the color patches next to the color code entry."""
        for row in self.color_rows:
            row.color_value = self.style.colors.get(row.label["text"])
            row.update_patch_color()

    def export_user_themes(self):
        """Export user themes saved in the user.py file"""
        inpath = Path(user.__file__)
        outpath = asksaveasfilename(
            initialdir="/",
            initialfile="user.py",
            filetypes=[("python", "*.py")],
        )
        if outpath:
            shutil.copyfile(inpath, outpath)
            Messagebox.ok(
                parent=self,
                title="Export",
                message="User themes have been exported.",
            )

    def import_user_themes(self):
        """Import user themes into the user.py file. Any existing data
        in the user.py file will be overwritten."""
        outpath = Path(user.__file__)
        inpath = askopenfilename(
            initialdir="/",
            initialfile="user.py",
            filetypes=[("python", "*.py")],
        )
        confirm = Messagebox.okcancel(
            title="Import",
            message="This import will overwrite the existing user themes. Ok to import?",
        )
        if confirm == "OK" and inpath:
            shutil.copyfile(inpath, outpath)
            Messagebox.ok(
                parent=self,
                title="Export",
                message="User themes have been imported.",
            )

    def save_theme(self):
        """Save the current settings as a new theme. Warn using if
        saving will overwrite existing theme."""
        name = self.theme_name.get().lower().replace(" ", "")

        if name in user.USER_THEMES:
            result = Messagebox.okcancel(
                title="Save Theme",
                alert=True,
                message=f"Overwrite existing theme {name}?",
            )
            if result == "Cancel":
                return

        colors = {}
        for row in self.color_rows:
            colors[row.label["text"]] = row.color_value

        theme = {name: {"type": self.style.theme.type, "colors": colors}}
        user.USER_THEMES.update(theme)
        standard.STANDARD_THEMES[name] = theme[name]

        # save user themes to file
        formatted = json.dumps(user.USER_THEMES, indent=4)
        out = 'USER_THEMES = ' + formatted
        filepath = user.__file__
        with open(filepath, 'w', encoding='utf-8') as f:
            f.write(out)

        definition = ThemeDefinition(name, colors, self.style.theme.type)
        self.style.register_theme(definition)
        self.style.theme_use(name)
        new_themes = []
        for themename in self.style.theme_names():
            if not themename.startswith("temp"):
                new_themes.append(themename)
        self.base_theme.configure(values=new_themes)
        Messagebox.ok(f"The theme {name} has been created", "Save theme")


class ColorRow(ttk.Frame):
    def __init__(self, master, color, style):
        super().__init__(master, padding=(5, 2))
        self.colorname = color
        self.style = style

        self.label = ttk.Label(self, text=color, width=12)
        self.label.pack(side=LEFT)
        self.patch = Frame(
            master=self, background=self.style.colors.get(color), width=15
        )
        self.patch.pack(side=LEFT, fill=BOTH, padx=2)
        self.entry = ttk.Entry(self, width=12)
        self.entry.pack(side=LEFT, fill=X, expand=YES)
        self.entry.bind("<FocusOut>", self.enter_color)
        self.color_picker = ttk.Button(
            master=self,
            text="...",
            bootstyle=SECONDARY,
            command=self.pick_color,
        )
        self.color_picker.pack(side=LEFT, padx=2)

        # set initial color value and patch color
        self.color_value = self.style.colors.get(color)
        self.update_patch_color()

    def pick_color(self):
        """Callback for when a color is selected from the color chooser"""
        color = askcolor(color=self.color_value)
        if color[1]:
            self.color_value = color[1]
            self.update_patch_color()
        self.event_generate("<<ColorSelected>>")

    def enter_color(self, *_):
        """Callback for when a color is typed into the entry"""
        try:
            self.color_value = self.entry.get().lower()
            self.update_patch_color()
        except:
            self.color_value = self.style.colors.get(self.label["text"])
            self.update_patch_color()
        self.event_generate("<<ColorSelected>>")

    def update_patch_color(self):
        """Update the color patch frame with the color value stored in
        the entry widget."""
        self.entry.delete(0, END)
        self.entry.insert(END, self.color_value)
        self.patch.configure(background=self.color_value)


class DemoWidgets(ttk.Frame):
    """Builds a frame containing an example of most ttkbootstrap widgets
    with various styles and states applied.
    """

    ZEN = """Beautiful is better than ugly. 
    Explicit is better than implicit. 
    Simple is better than complex. 
    Complex is better than complicated.
    Flat is better than nested. 
    Sparse is better than dense.  
    Readability counts.
    Special cases aren't special enough to break the rules.
    Although practicality beats purity.
    Errors should never pass silently.
    Unless explicitly silenced.
    In the face of ambiguity, refuse the temptation to guess.
    There should be one-- and preferably only one --obvious way to do it.
    Although that way may not be obvious at first unless you're Dutch.
    Now is better than never.
    Although never is often better than *right* now.
    If the implementation is hard to explain, it's a bad idea.
    If the implementation is easy to explain, it may be a good idea.
    Namespaces are one honking great idea -- let's do more of those!"""

    def __init__(self, master, style):
        super().__init__(master)

        self.style: ttk.Style = style
        self.create_left_frame()
        self.create_right_frame()

    def create_right_frame(self):
        container = ttk.Frame(self)
        container.pack(side=RIGHT, fill=BOTH, expand=YES, padx=5)

        # demonstrates various button styles
        btn_group = ttk.Labelframe(
            master=container, text="Buttons", padding=(10, 5)
        )
        btn_group.pack(fill=X)

        menu = ttk.Menu(self)
        for i, t in enumerate(self.style.theme_names()):
            menu.add_radiobutton(label=t, value=i)

        default = ttk.Button(master=btn_group, text="solid button")
        default.pack(fill=X, pady=5)
        default.focus_set()

        mb = ttk.Menubutton(
            master=btn_group,
            text="solid menubutton",
            bootstyle=SECONDARY,
            menu=menu,
        )
        mb.pack(fill=X, pady=5)

        cb = ttk.Checkbutton(
            master=btn_group,
            text="solid toolbutton",
            bootstyle=(SUCCESS, TOOLBUTTON),
        )
        cb.invoke()
        cb.pack(fill=X, pady=5)

        ob = ttk.Button(
            master=btn_group, text="outline button", bootstyle=(INFO, OUTLINE)
        )
        ob.pack(fill=X, pady=5)

        mb = ttk.Menubutton(
            master=btn_group,
            text="outline menubutton",
            bootstyle=(WARNING, OUTLINE),
            menu=menu,
        )
        mb.pack(fill=X, pady=5)

        cb = ttk.Checkbutton(
            master=btn_group,
            text="outline toolbutton",
            bootstyle="success-outline-toolbutton",
        )
        cb.pack(fill=X, pady=5)

        lb = ttk.Button(master=btn_group, text="link button", bootstyle=LINK)
        lb.pack(fill=X, pady=5)

        cb1 = ttk.Checkbutton(
            master=btn_group,
            text="rounded toggle",
            bootstyle=(SUCCESS, ROUND, TOGGLE),
        )
        cb1.invoke()
        cb1.pack(fill=X, pady=5)

        cb2 = ttk.Checkbutton(
            master=btn_group, text="squared toggle", bootstyle=(SQUARE, TOGGLE)
        )
        cb2.pack(fill=X, pady=5)
        cb2.invoke()

        input_group = ttk.Labelframe(
            master=container, text="Other input widgets", padding=10
        )
        input_group.pack(fill=BOTH, pady=(10, 5), expand=YES)
        entry = ttk.Entry(input_group)
        entry.pack(fill=X)
        entry.insert(END, "entry widget")

        password = ttk.Entry(master=input_group, show="•")
        password.pack(fill=X, pady=5)
        password.insert(END, "password")

        spinbox = ttk.Spinbox(master=input_group, from_=0, to=100)
        spinbox.pack(fill=X)
        spinbox.set(45)

        cbo = ttk.Combobox(
            master=input_group,
            text=self.style.theme.name,
            values=self.style.theme_names(),
        )
        cbo.pack(fill=X, pady=5)
        cbo.current(self.style.theme_names().index(self.style.theme.name))

        de = ttk.DateEntry(input_group)
        de.pack(fill=X)

    def create_left_frame(self):
        """Create all the left frame widgets"""
        container = ttk.Frame(self)
        container.pack(side=LEFT, fill=BOTH, expand=YES, padx=5)

        # demonstrates all color options inside a label
        color_group = ttk.Labelframe(
            master=container, text="Theme color options", padding=10
        )
        color_group.pack(fill=X, side=TOP)
        for color in self.style.colors:
            cb = ttk.Button(color_group, text=color, bootstyle=color)
            cb.pack(side=LEFT, expand=YES, padx=5, fill=X)

        # demonstrates all radiobutton widgets active and disabled
        cr_group = ttk.Labelframe(
            master=container, text="Checkbuttons & radiobuttons", padding=10
        )
        cr_group.pack(fill=X, pady=10, side=TOP)
        cr1 = ttk.Checkbutton(cr_group, text="selected")
        cr1.pack(side=LEFT, expand=YES, padx=5)
        cr1.invoke()
        cr2 = ttk.Checkbutton(cr_group, text="deselected")
        cr2.pack(side=LEFT, expand=YES, padx=5)
        cr3 = ttk.Checkbutton(cr_group, text="disabled", state=DISABLED)
        cr3.pack(side=LEFT, expand=YES, padx=5)
        cr4 = ttk.Radiobutton(cr_group, text="selected", value=1)
        cr4.pack(side=LEFT, expand=YES, padx=5)
        cr4.invoke()
        cr5 = ttk.Radiobutton(cr_group, text="deselected", value=2)
        cr5.pack(side=LEFT, expand=YES, padx=5)
        cr6 = ttk.Radiobutton(
            cr_group, text="disabled", value=3, state=DISABLED
        )
        cr6.pack(side=LEFT, expand=YES, padx=5)

        # demonstrates the treeview and notebook widgets
        ttframe = ttk.Frame(container)
        ttframe.pack(pady=5, fill=X, side=TOP)
        table_data = [
            ("South Island, New Zealand", 1),
            ("Paris", 2),
            ("Bora Bora", 3),
            ("Maui", 4),
            ("Tahiti", 5),
        ]
        tv = ttk.Treeview(
            master=ttframe, columns=[0, 1], show="headings", height=5
        )
        for row in table_data:
            tv.insert("", END, values=row)
        tv.selection_set("I001")
        tv.heading(0, text="City")
        tv.heading(1, text="Rank")
        tv.column(0, width=300)
        tv.column(1, width=70, anchor=CENTER)
        tv.pack(side=LEFT, anchor=NE, fill=X)

        nb = ttk.Notebook(ttframe)
        nb.pack(side=LEFT, padx=(10, 0), expand=YES, fill=BOTH)
        nb_text = (
            "This is a notebook tab.\nYou can put any widget you want here."
        )
        nb.add(ttk.Label(nb, text=nb_text), text="Tab 1", sticky=NW)
        nb.add(
            child=ttk.Label(nb, text="A notebook tab."),
            text="Tab 2",
            sticky=NW,
        )
        nb.add(ttk.Frame(nb), text="Tab 3")
        nb.add(ttk.Frame(nb), text="Tab 4")
        nb.add(ttk.Frame(nb), text="Tab 5")

        # text widget
        txt = ttk.Text(master=container, height=5, width=50, wrap="none")
        txt.insert(END, DemoWidgets.ZEN)
        txt.pack(side=LEFT, anchor=NW, pady=5, fill=BOTH, expand=YES)

        # demonstrates scale, progressbar, and meter, and scrollbar widgets
        lframe_inner = ttk.Frame(container)
        lframe_inner.pack(fill=BOTH, expand=YES, padx=10)
        scale = ttk.Scale(
            master=lframe_inner, orient=HORIZONTAL, value=75, from_=100, to=0
        )
        scale.pack(fill=X, pady=5, expand=YES)

        ttk.Progressbar(
            master=lframe_inner,
            orient=HORIZONTAL,
            value=50,
        ).pack(fill=X, pady=5, expand=YES)

        ttk.Progressbar(
            master=lframe_inner,
            orient=HORIZONTAL,
            value=75,
            bootstyle="success-striped",
        ).pack(fill=X, pady=5, expand=YES)

        m = ttk.Meter(
            master=lframe_inner,
            metersize=150,
            amountused=45,
            subtext="meter widget",
            bootstyle="info",
            interactive=True,
        )
        m.pack(pady=10)

        sb = ttk.Scrollbar(
            master=lframe_inner,
            orient=HORIZONTAL,
        )
        sb.set(0.1, 0.9)
        sb.pack(fill=X, pady=5, expand=YES)

        sb = ttk.Scrollbar(
            master=lframe_inner, orient=HORIZONTAL, bootstyle="danger-round"
        )
        sb.set(0.1, 0.9)
        sb.pack(fill=X, pady=5, expand=YES)


if __name__ == "__main__":

    creator = ThemeCreator()
    creator.mainloop()