"""The per-frame HTML pages: Photos (/frames/{id}), Configuration, and
Stats tabs, all inside the sidebar app shell. Data loading happens
client-side against /api/frames/{id}/... (routers/api_frames.py); these
routes just authorize and render the scaffold."""

from __future__ import annotations

from fastapi import APIRouter, Depends, HTTPException, Request
from fastapi.responses import HTMLResponse, RedirectResponse
from fastapi.templating import Jinja2Templates
from sqlalchemy.orm import Session

from ..auth import can_view_frame, current_user
from ..db import get_db
from ..image_pipeline import (
    DEFAULT_PALETTE_RGB,
    DISPLAY_MODE_LABELS,
    PALETTE_LABELS,
    palette_to_hex,
)
from ..models import Frame
from ..quiet_hours import ALL_TIMEZONES
from .common import shell_context

router = APIRouter()
templates = Jinja2Templates(directory="app/templates")


def _frame_page(request: Request, db: Session, frame_id: int, template: str, tab: str, **extra):
    user = current_user(request, db)
    if user is None:
        return RedirectResponse(f"/login?next=/frames/{frame_id}", status_code=303)
    frame = db.get(Frame, frame_id)
    if frame is None or not can_view_frame(db, user, frame):
        raise HTTPException(404, "No such frame")
    ctx = shell_context(request, db, user, active_frame=frame)
    ctx.update({"frame": frame, "active_tab": tab, **extra})
    return templates.TemplateResponse(template, ctx)


@router.get("/frames/{frame_id}", response_class=HTMLResponse)
def frame_photos_page(frame_id: int, request: Request, db: Session = Depends(get_db)):
    return _frame_page(request, db, frame_id, "frame_photos.html", "photos")


@router.get("/frames/{frame_id}/config", response_class=HTMLResponse)
def frame_config_page(frame_id: int, request: Request, db: Session = Depends(get_db)):
    return _frame_page(
        request, db, frame_id, "frame_config.html", "config",
        timezones=ALL_TIMEZONES,
        palette_labels=PALETTE_LABELS,
        default_palette_rgb=DEFAULT_PALETTE_RGB,
        palette_to_hex=palette_to_hex,
        display_mode_labels=DISPLAY_MODE_LABELS,
    )


@router.get("/frames/{frame_id}/stats", response_class=HTMLResponse)
def frame_stats_page(frame_id: int, request: Request, db: Session = Depends(get_db)):
    return _frame_page(request, db, frame_id, "frame_stats.html", "stats")