"""Home page — quick launcher + active backends + counters."""

import flet as ft

from gui import services as svc


def _stat_card(title: str, value: str, color: str = "#33d3a4") -> ft.Container:
    return ft.Container(
        content=ft.Column(
            [
                ft.Text(title, size=11, color="#8aa0a8"),
                ft.Text(value, size=22, weight=ft.FontWeight.W_600, color=color),
            ],
            spacing=2,
        ),
        bgcolor="#15252b",
        border_radius=10,
        padding=14,
        expand=True,
    )


def build(page: ft.Page) -> ft.Control:
    running = svc.assistant_is_running()
    try:
        llm_b, llm_m = svc.llm_active()
    except (RuntimeError, OSError, ValueError) as exc:
        llm_b, llm_m = "—", str(exc)

    counters = ft.Row(
        controls=[
            _stat_card("Команды", str(_safe_count(svc, "commands"))),
            _stat_card("Макросы", str(len(svc.macros_all()))),
            _stat_card("Расписание", str(len(svc.scheduler_all()))),
            _stat_card("Память (фактов)", str(len(svc.memory_all()))),
            _stat_card("Плагины", str(len(svc.plugins_all()))),
        ],
        spacing=10,
    )

    status_chip = ft.Container(
        content=ft.Text(
            "АССИСТЕНТ РАБОТАЕТ" if running else "АССИСТЕНТ ОСТАНОВЛЕН",
            size=12,
            weight=ft.FontWeight.W_700,
            color="#13191c",
        ),
        bgcolor="#33d3a4" if running else "#d8d8d8",
        padding=ft.padding.symmetric(horizontal=12, vertical=6),
        border_radius=20,
    )

    start_btn = ft.FilledButton(
        text="Запустить J.A.R.V.I.S.",
        icon=ft.Icons.PLAY_ARROW,
        on_click=lambda e: _launch(page, e),
        disabled=running,
    )

    backends_card = ft.Container(
        content=ft.Column([
            ft.Text("Активный LLM", size=11, color="#8aa0a8"),
            ft.Text(f"{llm_b} · {llm_m}", size=14, weight=ft.FontWeight.W_500),
        ], spacing=2),
        bgcolor="#15252b",
        border_radius=10,
        padding=14,
    )

    return ft.Column(
        controls=[
            ft.Row([
                ft.Text("J.A.R.V.I.S.", size=28, weight=ft.FontWeight.W_700),
                status_chip,
            ], alignment=ft.MainAxisAlignment.SPACE_BETWEEN),
            ft.Text(
                "Голосовой ассистент — Python-форк. Эта панель управляет состоянием, "
                "запускает main.py и переключает движки.",
                color="#8aa0a8",
                size=12,
            ),
            ft.Divider(color="#1f3540"),
            backends_card,
            counters,
            ft.Divider(color="#1f3540"),
            start_btn,
        ],
        spacing=14,
        expand=True,
        scroll=ft.ScrollMode.AUTO,
    )


def _launch(page: ft.Page, _e) -> None:
    ok = svc.assistant_run()
    page.open(
        ft.SnackBar(
            content=ft.Text(
                "Запускаю main.py" if ok else "Не удалось запустить main.py",
                color="white",
            ),
            bgcolor="#33d3a4" if ok else "#d8584f",
        )
    )


def _safe_count(svc_module, kind: str) -> int:
    """Counts come from disk; if a store fails we display 0 rather than crash."""
    try:
        if kind == "commands":
            # Don't import the full VA_CMD_LIST machinery — read yaml directly.
            import os, yaml  # pylint: disable=import-outside-toplevel
            here = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
            with open(os.path.join(here, "commands.yaml"), "rt", encoding="utf8") as f:
                return len(yaml.safe_load(f) or {})
    except (OSError, ValueError):
        return 0
    return 0