from sqlalchemy import func, or_, select
from sqlalchemy.orm import Session

from app.models.site import Site


class SitesRepository:
    def __init__(self, db: Session) -> None:
        self.db = db

    def get_by_key(self, site_key: str) -> Site | None:
        stmt = select(Site).where(Site.site_key == site_key)
        return self.db.scalar(stmt)

    def list(
        self,
        keyword: str | None = None,
        company_id: str | None = None,
        limit: int = 100,
        offset: int = 0,
    ) -> tuple[list[Site], int]:
        stmt = select(Site)
        count_stmt = select(func.count()).select_from(Site)
        if keyword:
            pattern = f"%{keyword}%"
            cond = or_(Site.site_key.ilike(pattern), Site.name.ilike(pattern))
            stmt = stmt.where(cond)
            count_stmt = count_stmt.where(cond)
        if company_id:
            stmt = stmt.where(Site.company_id == company_id)
            count_stmt = count_stmt.where(Site.company_id == company_id)
        stmt = stmt.order_by(Site.created_at.desc()).limit(limit).offset(offset)
        return list(self.db.scalars(stmt).all()), int(self.db.scalar(count_stmt) or 0)

    def create(self, site_key: str, company_id: str, name: str, status: str = "active") -> Site:
        item = Site(site_key=site_key, company_id=company_id, name=name, status=status)
        self.db.add(item)
        self.db.commit()
        self.db.refresh(item)
        return item

    def update(
        self,
        item: Site,
        *,
        company_id: str | None = None,
        name: str | None = None,
        status: str | None = None,
    ) -> Site:
        if company_id is not None:
            item.company_id = company_id
        if name is not None:
            item.name = name
        if status is not None:
            item.status = status
        self.db.commit()
        self.db.refresh(item)
        return item