"""
顧客選択モーダルコンポーネント
Flutter風のModalBottomSheetをFletで実装
"""

import sys
import os
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

import flet as ft
from typing import List, Callable, Optional
from models.invoice_models import Customer

class CustomerPickerModal:
    """顧客選択モーダル"""
    
    def __init__(self, page: ft.Page, customers: List[Customer], 
                 on_customer_selected: Callable[[Customer], None],
                 on_customer_deleted: Callable[[Customer], None] = None):
        self.page = page
        self.customers = customers
        self.on_customer_selected = on_customer_selected
        self.on_customer_deleted = on_customer_deleted
        self.is_open = False
        
    def open(self):
        """モーダルを開く"""
        self.is_open = True
        self.show_modal()
    
    def close(self):
        """モーダルを閉じる"""
        self.is_open = False
        self.hide_modal()
    
    def show_modal(self):
        """モーダル表示"""
        # 検索テキストフィールド
        search_field = ft.TextField(
            label="顧客検索",
            prefix_icon=ft.Icons.SEARCH,
            on_change=self.filter_customers,
            expand=True,
        )
        
        # 顧客リスト
        customer_list = ft.Column([], scroll=ft.ScrollMode.AUTO, expand=True)
        
        # モーダルダイアログ
        modal_dialog = ft.AlertDialog(
            title=ft.Text("顧客選択"),
            content=ft.Column([
                search_field,
                ft.Container(height=10),
                ft.Container(
                    content=customer_list,
                    height=300,
                    width=400,
                ),
                ft.Container(height=10),
                ft.Button(
                    content=ft.Row([
                        ft.Icon(ft.Icons.ADD),
                        ft.Text("新規顧客を登録"),
                    ], alignment=ft.MainAxisAlignment.CENTER),
                    on_click=self.add_new_customer,
                    bgcolor=ft.Colors.BLUE_GREY_800,
                ),
            ], tight=True),
            actions=[
                ft.TextButton("キャンセル", on_click=lambda _: self.close()),
            ],
            actions_alignment=ft.MainAxisAlignment.END,
        )
        
        # ダイアログを開く
        self.page.dialog = modal_dialog
        modal_dialog.open = True
        self.page.update()
        
        # 初期データ表示
        self.update_customer_list_simple(customer_list, self.customers)
    
    def hide_modal(self):
        """モーダルを非表示"""
        self.page.overlay.clear()
        self.page.update()
    
    def filter_customers(self, e=None):
        """顧客フィルタリング"""
        search_text = e.control.value.lower() if e else ""
        
        filtered_customers = [
            customer for customer in self.customers
            if search_text in customer.name.lower() or 
               search_text in customer.formal_name.lower()
        ]
        
        self.update_customer_list(filtered_customers)
    
    def update_customer_list_simple(self, customer_list, customers: List[Customer]):
        """顧客リスト更新（シンプル版）"""
        customer_list.controls.clear()
        
        for customer in customers:
            card = self.create_customer_card(customer)
            customer_list.controls.append(card)
        
        self.page.update()
    
    def update_customer_list(self, customers: List[Customer]):
        """顧客リスト更新"""
        # ダイアログの顧客リストを更新
        if hasattr(self.page, 'dialog') and self.page.dialog:
            customer_list = self.page.dialog.content.controls[2].content
            self.update_customer_list_simple(customer_list, customers)
    
    def create_customer_card(self, customer: Customer) -> ft.Container:
        """顧客カード作成"""
        return ft.Container(
            content=ft.Card(
                content=ft.Container(
                    content=ft.Column([
                        ft.Row([
                            ft.Text(
                                customer.formal_name,
                                size=16,
                                weight=ft.FontWeight.BOLD,
                                expand=True,
                            ),
                            ft.IconButton(
                                ft.Icons.DELETE,
                                on_click=lambda _, c=customer: self.delete_customer(c),
                                icon_color=ft.Colors.RED_400,
                            ),
                        ]),
                        ft.Container(height=5),
                        ft.Text(customer.address, size=12, color=ft.Colors.GREY_600),
                        ft.Text(customer.phone, size=12, color=ft.Colors.GREY_600),
                    ]),
                    padding=ft.padding.all(15),
                ),
                elevation=2,
            ),
            on_click=lambda _, c=customer: self.select_customer(c),
        )
    
    def select_customer(self, customer: Customer):
        """顧客選択"""
        if self.on_customer_selected:
            self.on_customer_selected(customer)
        self.close()
    
    def delete_customer(self, customer: Customer):
        """顧客削除"""
        if self.on_customer_deleted:
            self.on_customer_deleted(customer)
    
    def add_new_customer(self, e=None):
        """新規顧客追加"""
        # TODO: 新規顧客登録画面を開く
        logging.info("新規顧客登録")