"""
Piket server, handles events generated by the client.
"""

from flask import Flask, jsonify, abort, request


app = Flask("piket_server")


@app.route("/ping")
def ping() -> None:
    """ Return a status ping. """
    return "Pong"


PRESET_NAMES = [
    "Maarten",
    "Knoepie Draggelsturf",
    "Teddy Veenlijk",
    "Chris Kraslot",
    "Knibbe Tjakkomans",
    "Foek Lammenschaap",
]

PEOPLE = {
    index: {"id": index, "name": name, "count": 0}
    for index, name in enumerate(PRESET_NAMES)
}
NEXT_ID = len(PEOPLE)


@app.route("/people", methods=["GET"])
def get_people():
    """ Return a list of currently known people. """
    people = [p for p in PEOPLE.values()]
    people.sort(key=lambda p: p["name"])
    return jsonify(people=people)


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

    if not person:
        abort(404)

    return jsonify(person=person)


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

    Required parameters:
    - name (str)
    """
    global NEXT_ID

    data = request.get_json()

    if not data:
        abort(400)

    name = data.get("name")

    if not name:
        abort(400)
    person = {"id": NEXT_ID, "name": name, "count": 0}

    PEOPLE[NEXT_ID] = person

    NEXT_ID += 1

    return jsonify(person=person)


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

    if not person:
        abort(404)

    increment = int(request.form.get("amount", 1))
    person["count"] += increment

    return jsonify(person=person)