SYSTEM: You are a Python 3.12 programmer, capable of analyzing problems in depth and explaining solutions in a clear and concise manner. Your responses prioritize code efficiency, readability, and simplicity. You leverage the latest Python features. When addressing tasks, you break them down into clear steps and present only essential information, ensuring users receive focused, expert guidance tailored to their needs. You only print the parts of the code you changed in a way that makes them easy to copy paste in the code base. USER: Currently the code saves all tables on start up which slows down the start and does not seem to have any good reason. Am i missing something is there a good reason?  Python 3.12 Code: import ctypes
import csv
import json
import tkinter as tk
from tkinter import filedialog, messagebox, simpledialog, ttk
from pathlib import Path
from tksheet import Sheet

def set_dpi_awareness():
"""Enable DPI awareness for high DPI settings."""
try:
ctypes.windll.shcore.SetProcessDpiAwareness(1)
except Exception as e:
print(f"Error setting DPI awareness: {e}")

class TableApp:
"""Table Editor application with a sidebar and table management."""

def __init__(self, root: tk.Tk):
    """Initialize the TableApp."""
    self.root = root
    self.config_dimensions()
    self.config_fonts()
    self.config_colors()
    self.initialize_data()
    self.setup_ui()
    self.load_tables()

#--- Configuration ---

def config_dimensions(self):
    """Configure application dimensions."""
    self.root.title("Database")
    self.root.geometry("1920x1080")
    self.root.minsize(1435, 910)

    self.sidebar_width = 400
    self.static_frame_width = 100
    self.header_height = 190

def config_fonts(self):
    """Configure application fonts."""
    font_name, font_size, font_style = "Literata", 12, "normal"
    self.default_font = (font_name, font_size, font_style)
    self.root.option_add("*Font", f"{font_name} {font_size}")

def config_colors(self):
    """Configure application colors."""
    self.text_color = "#333333"
    self.background_color = "#FFFFFF"
    self.sidebar_color = "#F7F8FC"
    self.button_color = "#F7F8FC"
    self.button_color_selected = "#EAEDEF"
                         
def setup_ui(self):
    """Set up the user interface components."""
    self.create_sidebar()
    self.create_main_frame()
    self.create_header_frame()
    self.create_table_frame()

def create_sidebar(self):
    """Create the sidebar with navigation and actions."""
    sidebar = self._create_frame(
        parent=self.root,
        width=self.sidebar_width,
        bg=self.sidebar_color,
        side='left',
        anchor='nw',
        fill='y'
    )
    
    self._create_frame(
        parent=self.root,
        width=self.static_frame_width,
        bg=self.background_color,
        side='left',
        anchor='nw',
        fill='y'
    )
    sidebar.pack_propagate(False)

    self._add_normal_buttons(sidebar)
    self._add_scrollable_canvas(sidebar)
    self._add_delete_table_section(sidebar)

def _create_frame(
    self,
    parent: tk.Widget,
    width: int | None,
    bg: str,
    side: str,
    anchor: str,
    fill: str,
    expand: bool = False
) -> tk.Frame:
    """Create and pack a frame with specified properties."""
    frame = tk.Frame(parent, width=width, bg=bg, bd=0, relief='flat')
    frame.pack(side=side, anchor=anchor, fill=fill, expand=expand)
    return frame

def _add_normal_buttons(self, sidebar: tk.Frame):
    """Add navigation buttons to the sidebar."""
    normal_buttons_frame = self._create_frame(
        parent=sidebar,
        width=None,
        bg=self.sidebar_color,
        side='top',
        anchor='nw',
        fill='x',
    )

    create_table_label = self._create_clickable_label(
        parent=normal_buttons_frame,
        text="Create New Table",
        command=self.create_new_table,
        anchor='center'
    )
    create_table_label.pack(pady=10, anchor='center')
    self.add_custom_hover(create_table_label)

    self._add_separator(normal_buttons_frame)

def _add_scrollable_canvas(self, sidebar: tk.Frame):
    """Add a scrollable canvas to display table labels."""
    scrollbar_frame = self._create_frame(
        parent=sidebar,
        width=None,
        bg=self.sidebar_color,
        side='top',
        anchor='nw',
        fill='both',
        expand=True
    )

    canvas = tk.Canvas(scrollbar_frame, bg=self.sidebar_color, highlightthickness=0, width=self.sidebar_width - 15)
    canvas.pack(side="left", fill="both", expand=True)

    self.config_scrollbar_style()

    scrollbar = ttk.Scrollbar(
        scrollbar_frame,
        orient="vertical",
        command=canvas.yview,
        style="Custom.Vertical.TScrollbar"
    )
    scrollbar.pack(side="right", fill="y")

    canvas.configure(yscrollcommand=scrollbar.set)

    self.table_labels_frame = tk.Frame(canvas, bg=self.sidebar_color)
    canvas.create_window((0, 0), window=self.table_labels_frame, anchor="nw")

    self._bind_scrollbar_events(canvas, scrollbar, scrollbar_frame)

def _bind_scrollbar_events(self, canvas: tk.Canvas, scrollbar: ttk.Scrollbar, scrollbar_frame: tk.Frame):
    """Manage scrollbar visibility based on content size."""
    def configure_scrollbar(event: tk.Event | None = None):
        canvas.update_idletasks()
        canvas_height = scrollbar_frame.winfo_height()
        content_height = self.table_labels_frame.winfo_reqheight()

        if content_height > canvas_height:
            scrollbar.pack(side="right", fill="y")
        else:
            scrollbar.pack_forget()

        canvas.configure(scrollregion=canvas.bbox("all"))

    self.table_labels_frame.bind("<Configure>", configure_scrollbar)
    scrollbar_frame.bind("<Configure>", configure_scrollbar)

def _add_delete_table_section(self, sidebar: tk.Frame):
    """Add the delete table option to the sidebar."""
    self._add_separator(sidebar)

    delete_table_label = self._create_clickable_label(
        parent=sidebar,
        text="🗑 Delete Selected Table",
        command=self.delete_table
    )
    delete_table_label.pack(side='bottom', anchor='center', pady=10)
    self.add_custom_hover(delete_table_label)

def _add_separator(self, parent: tk.Widget):
    """Add a horizontal separator to the parent widget."""
    separator = ttk.Separator(parent, orient='horizontal')
    separator.pack(fill='x')

def _create_clickable_label(
        self,
        parent: tk.Widget,
        text: str,
        command,
        allow_rename: bool = False,
        anchor: str = 'w'
    ) -> tk.Label:
        """Create a clickable label with optional rename capability."""
        label = tk.Label(
            parent,
            text=text,
            bg=self.button_color,
            fg=self.text_color,
            cursor="hand2" if not allow_rename else "arrow",
            anchor=anchor,
        )
        label.bind("<Button-1>", lambda _: command())
        if allow_rename:
            label.bind("<Double-1>", lambda _: self.begin_rename(text))
        return label

def create_main_frame(self):
    """Create the main frame for displaying tables."""
    self.main_frame = tk.Frame(self.root)
    self.main_frame.pack(expand=True, fill='both', side='right')

def create_header_frame(self):
    """Create the header with filter and a settings button using the same design as sidebar buttons."""
    header_frame = tk.Frame(self.main_frame, height=self.header_height, bg=self.background_color)
    header_frame.pack(fill='x')
    header_frame.pack_propagate(False)

    tk.Label(header_frame, text="Filter:", bg=self.background_color, fg=self.text_color).pack(side='left')

    self.filter_entry = tk.Entry(header_frame, fg=self.text_color)
    self.filter_entry.pack(side='left')
    self.filter_entry.bind("<KeyRelease>", lambda _: self.apply_filter())

    settings_label = tk.Label(
        header_frame,
        text="...",
        bg=self.background_color,
        fg=self.text_color,
        cursor="hand2",
        anchor='w'
    )
    settings_label.place(relx=1.0, rely=0.0, anchor='ne', x=-40, y=20)

    settings_menu = tk.Menu(settings_label, tearoff=0)
    settings_menu.add_command(label="Export Table", command=self.export_table)
    settings_menu.add_command(label="Import Table", command=self.import_file)
    settings_menu.add_command(label="Rename Headers", command=self.rename_headers)

    def show_settings_menu(event):
        settings_menu.post(event.x_root, event.y_root)

    settings_label.bind("<Button-1>", show_settings_menu)

    def on_enter_settings(_):
        settings_label.config(bg=self.button_color_selected)

    def on_leave_settings(_):
        settings_label.config(bg=self.background_color)

    settings_label.bind("<Enter>", on_enter_settings)
    settings_label.bind("<Leave>", on_leave_settings)

def create_table_frame(self):
    """Create the frame to hold the active table."""
    self.table_frame = tk.Frame(self.main_frame, bg=self.background_color)
    self.table_frame.pack(expand=True, fill='both')

def initialize_data(self):
    """Initialize data structures and directories."""
    self.save_file_path = Path(__file__).parent / "Data.json"  # Changed to a single Data.json file

    self.tables: dict[str, Sheet] = {}
    self.original_data: dict[str, list[list[str]]] = {}
    self.headers: dict[str, list[str]] = {}
    self.current_table_name: str | None = None
    self.rename_entry: tk.Entry | None = None
    self.selected_table_label: tk.Label | None = None
    self.table_labels: dict[str, tk.Label] = {}  # Added initialization for table_labels

def create_new_table(self):
    """Create a new table and select it with a unique name."""
    existing_numbers = [
        int(name.split(" ")[1]) for name in self.tables
        if name.startswith("Table ") and name.split(" ")[1].isdigit()
    ]
    next_number = max(existing_numbers, default=0) + 1
    table_name = f"Table {next_number}"
    self.add_table(table_name)
    self.load_selected_table(table_name)

def import_file(self):
    """Import a table from a CSV or JSON file."""
    file_path = filedialog.askopenfilename(
        title="Import File",
        filetypes=[("JSON files", "*.json"), ("CSV files", "*.csv")]
    )
    if not file_path:
        return

    try:
        if file_path.endswith('.csv'):
            with open(file_path, newline='', encoding='utf-8') as csvfile:
                data = list(csv.reader(csvfile))
        elif file_path.endswith('.json'):
            with open(file_path, 'r', encoding='utf-8') as jsonfile:
                data = json.load(jsonfile)
        else:
            raise ValueError("Unsupported file format.")

        headers, table_data = data[0], data[1:]
        self.add_table_from_data(file_path, headers, table_data)
    except Exception as e:
        messagebox.showerror("File Import Error", str(e))

def add_table_from_data(self, file_path: str, headers: list[str], table_data: list[list[str]]):
    """Add a table using existing data from a file."""
    table_name = Path(file_path).stem
    table_name = self.ensure_unique_table_name(table_name)

    self.add_table(table_name, table_data)
    self.headers[table_name] = headers
    self.load_selected_table(table_name)
    self.save_data()

def ensure_unique_table_name(self, table_name: str) -> str:
    """Ensure the table name is unique by appending suffixes if necessary."""
    original_name = table_name
    counter = 1
    while table_name in self.tables:
        table_name = f"{original_name} (New {counter})"
        counter += 1
    return table_name

def save_table_data(self, file_path: str, data: list[list[str]], format: str):
    """Save table data in the specified format (CSV or JSON)."""
    match format:
        case 'csv':
            with open(file_path, 'w', newline='', encoding='utf-8') as file:
                csv.writer(file).writerows(data)
        case 'json':
            with open(file_path, 'w', encoding='utf-8') as file:
                json.dump(data, file, indent=4)
        case _:
            raise ValueError("Unsupported file format.")
        
def export_table(self):
    """Export the current table to a CSV or JSON file."""
    if not self.current_table_name:
        messagebox.showwarning("No Table Selected", "Please select a table to export.")
        return

    file_path = filedialog.asksaveasfilename(
        title="Export File",
        defaultextension=".json",
        filetypes=[("JSON files", "*.json"), ("CSV files", "*.csv")],
        initialfile=self.current_table_name
    )
    if not file_path:
        return

    try:
        data = [self.headers[self.current_table_name]] + self.tables[self.current_table_name].get_sheet_data()
        if file_path.endswith('.csv'):
            self.save_table_data(file_path, data, 'csv')
        elif file_path.endswith('.json'):
            with open(file_path, 'w', encoding='utf-8') as file:
                json.dump(data, file, indent=4)
        else:
            raise ValueError("Unsupported file format.")

        self.save_data()
        messagebox.showinfo("Export Successful", f"Table '{self.current_table_name}' has been exported successfully.")
    except Exception as e:
        messagebox.showerror("Export Failed", f"An error occurred during export: {e}")

def add_table(self, table_name: str, data: list[list[str]] | None = None):
    """Add a new table to the application."""
    default_data = [["" for _ in range(5)] for _ in range(10)]
    sheet = Sheet(
        self.table_frame,
        data=data or default_data,
        show_table=True,
        headers=None,
        font=self.default_font,
        header_font=self.default_font,
        auto_resize_columns=True
    )
    sheet.set_options(table_fg=self.text_color, header_fg=self.text_color)
    sheet.enable_bindings()
    sheet.extra_bindings([("end_edit_cell", lambda _: self.save_data())])
    sheet.pack_forget()

    self.tables[table_name] = sheet
    self.original_data[table_name] = sheet.get_sheet_data()
    self.headers.setdefault(table_name, sheet.headers())

    self.create_table_label(table_name)
    self.save_data()  # Save after adding a table

def create_table_label(self, table_name: str):
    """Create a label for the table in the sidebar."""
    label = self._create_clickable_label(
        parent=self.table_labels_frame,
        text=table_name,
        command=lambda: self.load_selected_table(table_name),
        allow_rename=True
    )
    label.pack(fill='x', padx=20, pady=5)
    self.table_labels[table_name] = label
    self.add_custom_hover(label)

def delete_table(self):
    """Delete the currently selected table."""
    if not self.current_table_name:
        messagebox.showwarning("No Table Selected", "Please select a table to delete.")
        return

    if messagebox.askyesno("Delete Table", f"Are you sure you want to delete the table '{self.current_table_name}'?"):
        self.remove_table(self.current_table_name)

def remove_table(self, table_name: str):
    """Remove a table from the application."""
    self.tables[table_name].destroy()
    self.table_labels[table_name].destroy()
    del self.tables[table_name]
    del self.original_data[table_name]
    del self.headers[table_name]
    del self.table_labels[table_name]
    
    self.current_table_name = None
    self.selected_table_label = None
    self.save_data()  # Save after removing a table

def load_tables(self):
    """Load existing tables from the Data.json file."""
    if not self.save_file_path.exists():
        return  # No data to load
    
    with self.save_file_path.open('r', encoding='utf-8') as file:
        all_data = json.load(file)
    
    for table_name, data in all_data.items():
        headers, table_data = data[0], data[1:]
        self.add_table(table_name, table_data)
        self.headers[table_name] = headers

def load_selected_table(self, table_name: str):
    """Display the selected table and hide others."""
    for name, sheet in self.tables.items():
        if name == table_name:
            sheet.pack(expand=True, fill='both')
            self.current_table_name = name
            sheet.headers(self.headers[name])
            self.apply_filter()
            self.selected_table_label = self.table_labels[name]
            self.selected_table_label.config(bg=self.button_color_selected)
        else:
            sheet.pack_forget()
            self.table_labels[name].config(bg=self.button_color)

def save_data(self):
    """Save all tables to the Data.json file."""
    all_data = {}
    for table_name in self.tables:
        data = [self.headers[table_name]] + self.tables[table_name].get_sheet_data()
        all_data[table_name] = data
    
    with self.save_file_path.open('w', encoding='utf-8') as file:
        json.dump(all_data, file, indent=4)
    print("All table data saved successfully.")

def apply_filter(self):
    """Filter table data based on the filter entry."""
    if not self.current_table_name:
        return

    term = self.filter_entry.get().lower()
    original_data = self.original_data[self.current_table_name]
    filtered_data = [
        row for row in original_data
        if any(term in str(cell).lower() for cell in row)
    ]
    self.tables[self.current_table_name].set_sheet_data(filtered_data)

def rename_headers(self):
    """Rename the headers of the selected table."""
    if not self.current_table_name:
        messagebox.showwarning("No Table Selected", "Please select a table to rename headers.")
        return

    current_headers = self.headers[self.current_table_name]
    new_headers = simpledialog.askstring(
        "Rename Headers",
        "Enter new headers (comma-separated):",
        initialvalue=", ".join(current_headers)
    )
    if new_headers:
        header_list = [header.strip() for header in new_headers.split(',')]
        self.headers[self.current_table_name] = header_list
        self.tables[self.current_table_name].headers(header_list)
        self.save_data()

def begin_rename(self, table_name: str):
    """Start renaming a table by replacing its label with an entry."""
    if table_name not in self.table_labels:
        messagebox.showerror("Error", f"Table '{table_name}' not found.")
        return

    label = self.table_labels[table_name]
    self.cancel_rename()

    self.rename_entry = tk.Entry(
        self.table_labels_frame,
        bg=label.cget("bg"),
        fg=self.text_color,
        relief='flat'
    )
    self.rename_entry.insert(0, table_name)
    self.rename_entry.place(
        x=label.winfo_x(),
        y=label.winfo_y(),
        width=label.winfo_width(),
        height=label.winfo_height()
    )
    self.rename_entry.focus()
    self.rename_entry.select_range(0, tk.END)
    self.rename_entry.bind('<Return>', lambda _: self.end_rename(table_name))
    self.rename_entry.bind('<FocusOut>', lambda _: self.cancel_rename())

def end_rename(self, old_name: str):
    """Finalize the renaming of a table."""
    new_name = self.rename_entry.get().strip()

    if not new_name:
        messagebox.showerror("Invalid Name", "Table name cannot be empty.")
        self.rename_entry.focus_set()
        return

    if new_name in self.tables and new_name != old_name:
        messagebox.showerror("Duplicate Name", f"A table named '{new_name}' already exists.")
        self.rename_entry.focus_set()
        return

    if new_name != old_name:
        self.update_table_name(old_name, new_name)
        self.load_selected_table(new_name)

    self.cancel_rename()

def update_table_name(self, old_name: str, new_name: str):
    """Update the table's name and associated resources."""
    self.tables[new_name] = self.tables.pop(old_name)
    self.original_data[new_name] = self.original_data.pop(old_name)
    self.headers[new_name] = self.headers.pop(old_name)

    label = self.table_labels.pop(old_name)
    label.config(text=new_name)
    label.bind("<Button-1>", lambda _: self.load_selected_table(new_name))
    label.bind("<Double-1>", lambda _: self.begin_rename(new_name))

    self.table_labels[new_name] = label

    if self.selected_table_label == label:
        label.config(bg=self.button_color_selected)

    self.save_data()  # Save after renaming a table

def cancel_rename(self):
    """Cancel the ongoing rename operation."""
    if self.rename_entry:
        self.rename_entry.destroy()
        self.rename_entry = None

def add_custom_hover(self, label: tk.Label):
    """Add hover effects to a label."""
    def on_enter(_: tk.Event):
        if label != self.selected_table_label:
            label.config(bg=self.button_color_selected)

    def on_leave(_: tk.Event):
        if label != self.selected_table_label:
            label.config(bg=self.button_color)

    label.bind("<Enter>", on_enter)
    label.bind("<Leave>", on_leave)

#--- Custom Designs --- 
    
def config_scrollbar_style(self):
    """Configure the custom scrollbar style."""
    self.style = ttk.Style()
    self.style.theme_use("default")
    
    self.style.configure("Custom.Vertical.TScrollbar",
                         troughcolor=self.sidebar_color,
                         background="#c0c1c4",
                         borderwidth=0,        
                         arrowcolor=self.text_color)

    self.style.map("Custom.Vertical.TScrollbar",
                   background=[('active', '#878789')])
    
    self.style.layout("Custom.Vertical.TScrollbar",
                      [
                          ('Vertical.Scrollbar.trough',
                           {'children': [('Vertical.Scrollbar.thumb',
                                          {'expand': '1', 'sticky': 'ns'})],
                            'sticky': 'ns'})
                      ])

#--- Main ---

if name == "main":
set_dpi_awareness()
root = tk.Tk()
app = TableApp(root)
root.mainloop()