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

from app.models.company import Company


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

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

    def get_by_id(self, company_id: str) -> Company | None:
        stmt = select(Company).where(Company.id == company_id)
        return self.db.scalar(stmt)

    def list(self, keyword: str | None = None, limit: int = 100, offset: int = 0) -> tuple[list[Company], int]:
        stmt = select(Company)
        count_stmt = select(func.count()).select_from(Company)
        if keyword:
            pattern = f"%{keyword}%"
            cond = or_(Company.company_key.ilike(pattern), Company.name.ilike(pattern))
            stmt = stmt.where(cond)
            count_stmt = count_stmt.where(cond)
        stmt = stmt.order_by(Company.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, company_key: str, name: str, status: str = "active") -> Company:
        item = Company(company_key=company_key, name=name, status=status)
        self.db.add(item)
        self.db.commit()
        self.db.refresh(item)
        return item