from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession

from app.auth.deps import get_current_user
from app.database import get_db
from app.models.user import User
from app.schemas.page import PageCreate, PageUpdate, PageResponse
from app.services import pages as page_service
from typing import List

router = APIRouter(prefix="/pages", tags=["Pages"])


@router.get("", response_model=List[PageResponse])
async def list_pages(db: AsyncSession = Depends(get_db)):
    """List all published pages."""
    pages = await page_service.get_published_pages(db)
    return [PageResponse.model_validate(p) for p in pages]


@router.get("/{slug}", response_model=PageResponse)
async def get_page(slug: str, db: AsyncSession = Depends(get_db)):
    """Get a single published page by slug."""
    page = await page_service.get_page_by_slug(db, slug, published_only=True)
    if page is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Page '{slug}' not found")
    return PageResponse.model_validate(page)


@router.post("", response_model=PageResponse, status_code=status.HTTP_201_CREATED)
async def create_page(
    data: PageCreate,
    db: AsyncSession = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """Create a new page (auth required)."""
    page = await page_service.create_page(db, data)
    return PageResponse.model_validate(page)


@router.put("/{slug}", response_model=PageResponse)
async def update_page(
    slug: str,
    data: PageUpdate,
    db: AsyncSession = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """Update a page by slug (auth required)."""
    page = await page_service.update_page(db, slug, data)
    if page is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Page '{slug}' not found")
    return PageResponse.model_validate(page)


@router.delete("/{slug}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_page(
    slug: str,
    db: AsyncSession = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    """Delete a page by slug (auth required)."""
    deleted = await page_service.delete_page(db, slug)
    if not deleted:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"Page '{slug}' not found")