import sqlite3
from tkinter import messagebox

import customtkinter as ctk

from app.ui.base_frame import BaseAppFrame
from app.utils.validators import normalize_text, parse_float


class AccountsFrame(BaseAppFrame):
    """Screen for account management."""

    def __init__(self, master, refresh_callback) -> None:
        super().__init__(master, refresh_callback)
        self.grid_columnconfigure(1, weight=1)
        self.grid_rowconfigure(0, weight=1)
        self._build_form()
        self._build_list()

    def _build_form(self) -> None:
        form_frame = ctk.CTkFrame(self, corner_radius=20)
        form_frame.grid(row=0, column=0, sticky="ns", padx=(8, 12), pady=8)

        self.title_label(form_frame, "Счета и карты").pack(
            anchor="w", padx=18, pady=(18, 4)
        )
        self.subtitle_label(
            form_frame,
            "Добавьте карту, кошелёк, счёт или наличные.",
        ).pack(anchor="w", padx=18, pady=(0, 18))

        self.name_entry = ctk.CTkEntry(
            form_frame,
            width=300,
            placeholder_text="Название счёта",
        )
        self.name_entry.pack(padx=18, pady=8)

        self.type_menu = ctk.CTkOptionMenu(
            form_frame,
            width=300,
            values=["Карта", "Наличные", "Счёт", "Электронный кошелёк"],
        )
        self.type_menu.set("Карта")
        self.type_menu.pack(padx=18, pady=8)

        self.balance_entry = ctk.CTkEntry(
            form_frame,
            width=300,
            placeholder_text="Стартовый баланс",
        )
        self.balance_entry.pack(padx=18, pady=8)

        self.add_button = self.primary_button(
            form_frame,
            "Добавить счёт",
            lambda: self.run_safe(self.add_account, self.add_button),
        )
        self.add_button.pack(fill="x", padx=18, pady=(12, 18))

    def _build_list(self) -> None:
        self.list_frame = ctk.CTkScrollableFrame(self, label_text="Список счетов")
        self.list_frame.grid(row=0, column=1, sticky="nsew", padx=(0, 8), pady=8)

    def add_account(self) -> None:
        name = normalize_text(self.name_entry.get(), "Название")
        account_type = self.type_menu.get()
        balance = parse_float(self.balance_entry.get(), "Стартовый баланс")
        self.service.add_account(name, account_type, balance)
        self.name_entry.delete(0, "end")
        self.balance_entry.delete(0, "end")
        self.refresh_callback()

    def delete_account(self, account_id: int) -> None:
        if not messagebox.askyesno("Подтверждение", "Удалить выбранный счёт?"):
            return
        try:
            self.service.delete_account(account_id)
        except sqlite3.IntegrityError:
            messagebox.showerror(
                "Ошибка",
                "Нельзя удалить счёт, пока к нему привязаны операции.",
            )
            return
        self.refresh_callback()

    def refresh_data(self) -> None:
        self.clear(self.list_frame)
        rows = self.service.list_accounts()
        if not rows:
            self._empty("Пока нет ни одного счёта.")
            return

        for row in rows:
            card = ctk.CTkFrame(self.list_frame, corner_radius=16)
            card.pack(fill="x", padx=6, pady=6)
            card.grid_columnconfigure(0, weight=1)

            ctk.CTkLabel(
                card,
                text=row["name"],
                font=ctk.CTkFont(size=18, weight="bold"),
            ).grid(row=0, column=0, sticky="w", padx=16, pady=(12, 4))

            button = self.danger_button(
                card,
                "Удалить",
                lambda account_id=row["id"]: self.run_safe(
                    lambda: self.delete_account(account_id)
                ),
            )
            button.grid(row=0, column=1, sticky="e", padx=16, pady=(12, 4))

            ctk.CTkLabel(
                card,
                text=f"Тип: {row['account_type']} | Баланс: {self.money(row['balance'])}",
                text_color="gray70",
            ).grid(row=1, column=0, columnspan=2, sticky="w", padx=16, pady=(0, 14))

    def _empty(self, text: str) -> None:
        ctk.CTkLabel(self.list_frame, text=text, text_color="gray70").pack(
            anchor="w", padx=10, pady=10
        )