from flask_sqlalchemy import BaseQuery

from ..base.models import Base, Person
from ..base.utils import order_by_column_name
from ..dependencies import db
from ..students.models import YearGroup


class ProjectSupervisor(Base, Person):
    __tablename__ = "project_supervisors"

    limit_group = db.Column(db.Integer, default=3, nullable=False)
    is_coordinator = db.Column(db.Boolean, default=False, nullable=False)
    year_group_id = db.Column(db.Integer, db.ForeignKey("year_groups.id"))
    year_group = db.relationship("YearGroup", backref="project_supervisors")

    __table__args = db.UniqueConstraint(
        "email", "year_group_id", name="uc_email_year_group_id"
    )

    @classmethod
    def search_by_fullname(
        cls,
        year_group_id: int = None,
        fullname: str = None,
        order_by_first_name: str = None,
        order_by_last_name: str = None,
    ) -> BaseQuery:
        project_supervisors_query = cls.query

        if year_group_id is not None:
            project_supervisors_query = project_supervisors_query.filter(
                ProjectSupervisor.year_group_id == year_group_id
            )

        if fullname is not None:
            project_supervisors_query = project_supervisors_query.filter(
                (ProjectSupervisor.first_name + " " + ProjectSupervisor.last_name).like(
                    f"{fullname}%"
                )
            )

        project_supervisors_query = order_by_column_name(
            project_supervisors_query, ProjectSupervisor.first_name, order_by_first_name
        )
        project_supervisors_query = order_by_column_name(
            project_supervisors_query, ProjectSupervisor.last_name, order_by_last_name
        )

        return project_supervisors_query