system-pri/backend/app/coordinator/routes/workloads.py

from apiflask import APIBlueprint
from flask import abort

from ...dependencies import db
from ...examination_schedule.models import ExaminationSchedule, TermOfDefence
from ...project_supervisor.models import ProjectSupervisor
from ..schemas.examination_schedule import WorkloadSchema

bp = APIBlueprint("workloads", __name__, url_prefix="/")


@bp.get("/examination_schedule/<int:examination_schedule_id>/workloads/")
@bp.output(WorkloadSchema)
def workloads_statistics(examination_schedule_id: int) -> dict:
    es = ExaminationSchedule.query.filter_by(id=examination_schedule_id).first()
    if es is None:
        abort(404, "Not found examination schedule!")

    statistics = (
        db.session.query(
            ProjectSupervisor.first_name + " " + ProjectSupervisor.last_name,
            db.func.count(TermOfDefence.group_id),
            db.func.count(TermOfDefence.id),
        )
        .join(TermOfDefence.members_of_committee)
        .group_by(ProjectSupervisor.id)
        .all()
    )

    workloads = (
        {
            "full_name": s[0],
            "groups_assigned_to_his_committee": s[1],
            "assigned_to_committee": s[2],
        }
        for s in statistics
    )
    return {"workloads": workloads}