from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session
from typing import List
from database import get_db
import models, validation

router = APIRouter(prefix="/api/home", tags=["Home Page"])


@router.get("/dashboard", response_model=validation.DashboardResponse)
def get_dashboard_data(db: Session = Depends(get_db)):

    root_folders = db.query(models.Folder).filter(models.Folder.parent_id == None).all()

    recent_docs = (
        db.query(models.Document)
        .order_by(models.Document.updated_at.desc())
        .limit(5)
        .all()
    )

    return {"folders": root_folders, "recent_documents": recent_docs}


@router.post("/folders", response_model=validation.FolderResponse)
def create_folder(folder: validation.FolderCreate, db: Session = Depends(get_db)):
    new_folder = models.Folder(name=folder.name, parent_id=folder.parent_id)
    db.add(new_folder)
    db.commit()
    db.refresh(new_folder)
    return new_folder


@router.get("/search", response_model=List[validation.DocumentResponse])
def search_documents(
    q: str = Query(..., min_length=1, description="Fraza wyszukiwania"),
    db: Session = Depends(get_db),
):

    # Wyszukiwanie po tytule pliku
    by_title = (
        db.query(models.Document).filter(models.Document.title.ilike(f"%{q}%")).all()
    )

    # Wyszukiwanie po tagach
    by_tag = (
        db.query(models.Document)
        .join(models.Document.tags)
        .filter(models.Tag.name.ilike(f"%{q}%"))
        .all()
    )

    # Połączenie wyników i usunięcie duplikatów
    results = list({doc.id: doc for doc in (by_title + by_tag)}.values())

    return results


@router.get("/folders/{folder_id}", response_model=validation.FolderContentResponse)
def get_folder_content(folder_id: int, db: Session = Depends(get_db)):

    folder = db.query(models.Folder).filter(models.Folder.id == folder_id).first()
    if not folder:
        raise HTTPException(status_code=404, detail="Folder nie istnieje")

    subfolders = (
        db.query(models.Folder).filter(models.Folder.parent_id == folder_id).all()
    )
    documents = (
        db.query(models.Document).filter(models.Document.folder_id == folder_id).all()
    )

    return {
        "id": folder.id,
        "name": folder.name,
        "subfolders": subfolders,
        "documents": documents,
    }