"""
Provides routes related to managing Person objects.
"""

from flask import jsonify, request
from sqlalchemy.exc import SQLAlchemyError

from piket_server.models import Consumption, Person
from piket_server.flask import app, db


@app.route("/people", methods=["GET"])
def get_people():
    """ Return a list of currently known people. """
    people = Person.query.order_by(Person.full_name).all()
    q = Person.query.order_by(Person.full_name)
    if request.args.get("active"):
        active_status = request.args.get("active", type=int)
        q = q.filter_by(active=active_status)
    people = q.all()
    result = [person.as_dict for person in people]
    return jsonify(people=result)


@app.route("/people/<int:person_id>", methods=["GET"])
def get_person(person_id: int):
    person = Person.query.get_or_404(person_id)

    return jsonify(person=person.as_dict)


@app.route("/people", methods=["POST"])
def add_person():
    """
    Add a new person.

    Required parameters:
    - name (str)
    """
    json = request.get_json()

    if not json:
        return jsonify({"error": "Could not parse JSON."}), 400

    data = json.get("person") or {}
    person = Person(
        full_name=data.get("full_name"),
        active=data.get("active", False),
        display_name=data.get("display_name", None),
    )

    try:
        db.session.add(person)
        db.session.commit()
    except SQLAlchemyError:
        return jsonify({"error": "Invalid arguments for Person."}), 400

    return jsonify(person=person.as_dict), 201


@app.route("/people/<int:person_id>", methods=["PATCH"])
def update_person(person_id: int):
    person = Person.query.get_or_404(person_id)

    data = request.json["person"]
    changed = False

    if "active" in data:
        person.active = data["active"]
        changed = True

    if "full_name" in data:
        person.full_name = data["full_name"]
        changed = True

    if "display_name" in data:
        person.display_name = data["display_name"]
        changed = True

    if changed:
        db.session.add(person)
        db.session.commit()

    return jsonify(person=person.as_dict)


@app.route("/people/<int:person_id>/add_consumption", methods=["POST"])
def add_consumption(person_id: int):
    person = Person.query.get_or_404(person_id)

    consumption = Consumption(person=person, consumption_type_id=1)
    try:
        db.session.add(consumption)
        db.session.commit()
    except SQLAlchemyError:
        return (
            jsonify(
                {"error": "Invalid Consumption parameters.", "person": person.as_dict}
            ),
            400,
        )

    return jsonify(person=person.as_dict, consumption=consumption.as_dict), 201


@app.route("/people/<int:person_id>/add_consumption/<int:ct_id>", methods=["POST"])
def add_consumption2(person_id: int, ct_id: int):
    person = Person.query.get_or_404(person_id)

    consumption = Consumption(person=person, consumption_type_id=ct_id)
    try:
        db.session.add(consumption)
        db.session.commit()
    except SQLAlchemyError:
        return (
            jsonify(
                {"error": "Invalid Consumption parameters.", "person": person.as_dict}
            ),
            400,
        )

    return jsonify(person=person.as_dict, consumption=consumption.as_dict), 201