"""Scheduler page — list tasks + remove."""

import datetime
import flet as ft

from gui import services as svc


def _fmt_ts(ts) -> str:
    if not ts:
        return "—"
    try:
        return datetime.datetime.fromtimestamp(int(ts)).strftime("%Y-%m-%d %H:%M:%S")
    except (TypeError, ValueError, OSError):
        return "—"


def build(page: ft.Page) -> ft.Control:
    list_view = ft.Column(spacing=8, expand=True, scroll=ft.ScrollMode.AUTO)

    def render():
        list_view.controls.clear()
        tasks = svc.scheduler_all()
        if not tasks:
            list_view.controls.append(
                ft.Text("Запланированных задач нет. Создавай голосом: «Каждые 30 минут напомни попить воды».",
                        color="#8aa0a8"))
        for t in sorted(tasks, key=lambda x: x.get("created_at", 0)):
            list_view.controls.append(_task_card(t, on_delete=lambda tid=t["id"]: do_remove(tid)))
        page.update()

    def do_remove(task_id: str):
        if svc.scheduler_remove(task_id):
            page.open(ft.SnackBar(content=ft.Text("Задача удалена", color="white"), bgcolor="#33d3a4"))
        render()

    render()

    return ft.Column(
        [
            ft.Row([
                ft.Text("Расписание", size=24, weight=ft.FontWeight.W_700),
                ft.FilledButton(text="Обновить", icon=ft.Icons.REFRESH, on_click=lambda e: render()),
            ], alignment=ft.MainAxisAlignment.SPACE_BETWEEN),
            list_view,
        ],
        spacing=10,
        expand=True,
    )


def _task_card(t: dict, on_delete) -> ft.Control:
    name = t.get("name", "?")
    sched_h = t.get("schedule_human") or t.get("schedule_kind") or "?"
    action = t.get("action") or {}
    action_text = action.get("text") or action.get("speak") or action.get("phrase") or "(нет текста)"
    return ft.Container(
        content=ft.Column([
            ft.Row([
                ft.Text(name, weight=ft.FontWeight.W_600, size=14),
                ft.Container(
                    content=ft.Text(sched_h, size=10),
                    bgcolor="#1e3a44",
                    padding=ft.padding.symmetric(horizontal=8, vertical=2),
                    border_radius=10,
                ),
            ], alignment=ft.MainAxisAlignment.SPACE_BETWEEN),
            ft.Text(f"Действие: {action_text}", size=11, color="#a8b8c0"),
            ft.Row([
                ft.Text(f"создана: {_fmt_ts(t.get('created_at'))}", size=10, color="#5a6a72"),
                ft.Text(f"последний запуск: {_fmt_ts(t.get('last_fired'))}", size=10, color="#5a6a72"),
            ]),
            ft.Row([
                ft.OutlinedButton(text="Удалить", icon=ft.Icons.DELETE, on_click=lambda e: on_delete()),
            ]),
        ], spacing=6),
        bgcolor="#15252b",
        border_radius=8,
        padding=12,
    )