import os
import flet as ft
import httpx
import designer as ds
from router import setup_router
import theme_manager as tm
from starlette.applications import Starlette
from starlette.routing import Route, Mount
from starlette.responses import Response as StarletteResponse

_API_URL = os.getenv("API_URL", "http://api:8000")


async def _radar_image(request):
    """Проксирует SVG-диаграмму с API — браузер скачивает с собственного хоста."""
    response_id = request.path_params["response_id"]
    try:
        async with httpx.AsyncClient(timeout=10) as client:
            r = await client.get(f"{_API_URL}/responses/{response_id}/radar/image")
        if r.status_code == 200:
            return StarletteResponse(
                content=r.content,
                media_type="image/svg+xml",
                headers={"Content-Disposition": 'attachment; filename="diagram.svg"'},
            )
    except Exception:
        pass
    return StarletteResponse(status_code=404)


async def main(page: ft.Page):
    page.title = "COPP"

    # Применяем сохранённые тему и масштаб до построения любых виджетов
    tm.apply_scale(page)
    tm.apply_theme(page)

    # Масштабирование глобального text_theme синхронно с ds.SCALE:
    # покрывает ft.Text() без явного size (body_medium по умолчанию = 14)
    _ts = lambda base: ft.TextStyle(size=ds.s(base))
    page.theme = ft.Theme(
        text_theme=ft.TextTheme(
            body_large=_ts(16),
            body_medium=_ts(14),
            body_small=_ts(12),
            label_large=_ts(14),
            label_medium=_ts(12),
            label_small=_ts(11),
            title_large=_ts(22),
            title_medium=_ts(16),
            title_small=_ts(14),
            headline_medium=_ts(28),
            headline_small=_ts(24),
            display_small=_ts(36),
        ),
    )
    setup_router(page)
    initial = page.route if page.route and page.route not in ("/", "") else "/login"
    await page.push_route(initial)


_flet_app = ft.run(main, export_asgi_app=True, assets_dir="assets")

app = Starlette(
    routes=[
        Route("/radar-image/{response_id}", _radar_image),
        Mount("/", _flet_app),
    ]
)