import asyncio
import flet as ft
import designer as ds
from info import AuthService


class RegView(ft.View):
    def __init__(self, page: ft.Page):
        self._auth = AuthService(page)
        self._orgs: list = []

        self._first_name = ds.CastomTextField_input(
            label="Имя",
            hint_text="Введите имя...",
            prefix_icon=ft.Icons.PERSON,
        )

        self._last_name = ds.CastomTextField_input(
            label="Фамилия",
            hint_text="Введите фамилию...",
            prefix_icon=ft.Icons.PERSON_OUTLINE,
        )

        self._username = ds.CastomTextField_input(
            label="Логин",
            hint_text="Введите логин...",
            prefix_icon=ft.Icons.ALTERNATE_EMAIL,
        )

        self._password = ds.CastomTextField_input(
            label="Пароль",
            hint_text="Введите пароль...",
            prefix_icon=ft.Icons.LOCK,
            password=True,
            can_reveal_password=True,
        )

        self._org_dropdown = ds.SearchableDropdown(
            label="Организация",
            hint_text="Загрузка...",
        )
        self._org_dropdown.on_select = self._on_org_change

        self._group_dropdown = ds.SearchableDropdown(
            label="Группа",
            hint_text="Загрузка...",
        )

        self._error = ft.Text("", color=ft.Colors.RED_400, size=ds.s(14), visible=False)

        self._btn = ds.CastomButton(
            text="Зарегистрироваться",
            on_click=lambda e: page.run_task(self._do_register),
        )

        self._btn_cansel = ds.CastomButton(
            text="Назад",
            on_click=lambda e: page.run_task(self._do_cancel),
        )

        super().__init__(
            route="/reg",
            bgcolor=ds.colors.background,
            horizontal_alignment=ft.CrossAxisAlignment.STRETCH,
            vertical_alignment=ft.MainAxisAlignment.CENTER,
            padding=ft.padding.symmetric(horizontal=ds.s(16), vertical=ds.s(24)),
            scroll=ft.ScrollMode.AUTO,
        )
        self.controls = [
            ft.Text("COPP", color=ds.colors.primary, size=ds.s(30), weight=ft.FontWeight.BOLD,
                    text_align=ft.TextAlign.CENTER),
            ft.Container(height=ds.s(8)),
            ft.Text("Регистрация в системе", color=ds.colors.primary, size=ds.s(16),
                    text_align=ft.TextAlign.CENTER),
            ft.Container(height=ds.s(24)),
            ft.Container(
                padding=ft.padding.all(ds.s(24)),
                bgcolor=ds.colors.surface_alt,
                border_radius=ds.s(16),
                content=ft.Column(
                    spacing=ds.s(16),
                    controls=[
                        self._first_name,
                        self._last_name,
                        self._username,
                        self._password,
                        self._org_dropdown,
                        self._group_dropdown,
                        self._error,
                        ft.Row(
                            wrap=True,
                            spacing=ds.s(8),
                            run_spacing=ds.s(8),
                            controls=[
                                self._btn_cansel,
                                self._btn,
                            ],
                        )
                    ],
                ),
            ),
        ]

    def did_mount(self):
        self.page.run_task(self._load_data)

    async def _load_data(self):
        orgs, groups = await asyncio.gather(
            self._auth.get_organizations(),
            self._auth.get_groups(),
        )
        self._orgs = orgs or []

        _opt_style = ft.ButtonStyle(color=ds.colors.text_primary)
        self._org_dropdown.options = [
            ft.DropdownOption(key=o["id"], text=o["name_organization"], style=_opt_style) for o in self._orgs
        ]
        self._org_dropdown.hint_text = "Выберите организацию..."

        self._group_dropdown.options = [
            ft.DropdownOption(key=g["id"], text=g["name_group"], style=_opt_style) for g in (groups or [])
        ]
        self._group_dropdown.hint_text = "Выберите группу..."

        self.update()

    def _on_org_change(self, e):
        # Автоматически выбираем группу, к которой привязана организация
        selected_id = e.control.value
        for o in self._orgs:
            if o["id"] == selected_id:
                self._group_dropdown.value = o.get("group_id")
                break
        self.update()

    async def _do_cancel(self):
        await self.page.push_route("/login")

    async def _do_register(self):
        first_name = self._first_name.value.strip() if self._first_name.value else ""
        last_name = self._last_name.value.strip() if self._last_name.value else ""
        username = self._username.value.strip() if self._username.value else ""
        password = self._password.value or ""

        if not all([first_name, last_name, username, password]):
            self._show_error("Заполните все обязательные поля")
            return

        self._btn.disabled = True
        self._error.visible = False
        self.update()

        error = await self._auth.register(
            username=username,
            password=password,
            first_name=first_name,
            last_name=last_name,
            group_id=self._group_dropdown.value,
            organization_id=self._org_dropdown.value,
        )

        if error:
            self._btn.disabled = False
            self._show_error(error)
        else:
            await self.page.push_route("/login")

    def _show_error(self, message: str):
        self._error.value = message
        self._error.visible = True
        self.update()