from apiflask import APIBlueprint
from flask import abort

from ...base.schemas import MessageSchema
from ...base.utils import paginate_models
from ...dependencies import db
from ...students.models import YearGroup
from ..schemas.year_group import (
    YearGroupPaginationSchema,
    YearGroupQuerySchema,
    YearGroupSchema,
)

bp = APIBlueprint("year_group", __name__, url_prefix="/year-group")


@bp.post("/")
@bp.input(YearGroupSchema)
@bp.output(MessageSchema, status_code=201)
def create_year_group(data: dict) -> dict:
    name = data["name"]
    mode = data["mode"]
    year_group = YearGroup.query.filter(
        YearGroup.name == name, YearGroup.mode == mode
    ).first()
    if year_group is not None:
        abort(400, "Year group has already exists!")

    yg = YearGroup(**data)
    db.session.add(yg)
    db.session.commit()

    return {"message": "Year group was created!"}


@bp.get("/")
@bp.input(YearGroupQuerySchema, location="query")
@bp.output(YearGroupPaginationSchema)
def list_of_year_groups(query: dict) -> dict:
    page = query.get("page")
    per_page = query.get("per_page")

    year_group_query = YearGroup.query.order_by(db.desc(YearGroup.created_at))
    data = paginate_models(page, year_group_query, per_page)

    return {"year_groups": data["items"], "max_pages": data["max_pages"]}


@bp.put("/<int:id>/")
@bp.input(YearGroupSchema)
@bp.output(MessageSchema)
def update_year_of_group(id: int, data: dict) -> dict:
    if not data:
        abort(400, "You have passed empty data!")

    year_group_query = YearGroup.query.filter(YearGroup.id == id)
    year_group = year_group_query.first()

    if year_group is None:
        abort(404, "Not found year group!")

    name = data["name"]
    mode = data["mode"]
    year_group = YearGroup.query.filter(
        YearGroup.name == name, YearGroup.mode == mode, YearGroup.id != id
    ).first()
    if year_group is not None:
        abort(400, "Year group has already exists!")

    year_group_query.update(data)
    db.session.commit()

    return {"message": "Year group was updated!"}


@bp.delete("/<int:id>/")
@bp.output(MessageSchema, status_code=202)
def delete_year_of_group(id: int) -> dict:
    year_group = YearGroup.query.filter_by(id=id).first()
    if year_group is None:
        abort(404, "Year group doesn't exist!")
    db.session.delete(year_group)
    db.session.commit()
    return {"message": "Year group was deleted!"}