from flask import Flask, jsonify, request, render_template
import json
import os

compiti = []
id_counter = 0

def update_file():
    with open('compiti.json', 'w') as f:
        json.dump(compiti, f)

if os.path.isfile('compiti.json'):
    with open('compiti.json', 'r') as f:
        compiti = json.load(f)
        id_counter = compiti[-1]["id"] + 1
else:
    compiti = [
    {"id": 1, "descrizione": "Compito matematica"},
    {"id": 2, "descrizione": "Consegna TPSIT progetto API REST"},
    {"id": 3, "descrizione": "Compito di sistemi"},
    {"id": 4, "descrizione": "Compito di italiano"}
    ]
    id_counter = 5
    update_file()



app = Flask(__name__)

@app.route("/", methods=["GET"])
def home():
    html = "<h1>Home page API REST Compiti</h1><h2>ciao, 3cx merda</h2>"
    html += "<a href=\"/doc\">Documentazione</a>"
    return html, 200

@app.route("/doc", methods=["GET"])
def get_doc():
    return render_template("doc.html"), 200

@app.route("/compiti", methods=["GET"])
def get_compiti():
    return jsonify(compiti), 200

@app.route("/compiti/<int:id>", methods=["GET"])
def get_compito_by_id(id):
    for ciscomerda in compiti:
        if ciscomerda["id"] == id:
            return jsonify(ciscomerda), 200
    return jsonify([]), 404

@app.route("/compiti", methods=["POST"])
def create_compito():
    global id_counter
    j = request.get_json()
    j["id"] = id_counter
    id_counter += 1
    compiti.append(j)
    update_file()
    return jsonify(j), 201

@app.route("/compiti/<int:id>", methods=["DELETE"])
def delete_compito(id):
    for ciscomerda in compiti:
        if ciscomerda["id"] == id:
            compiti.remove(ciscomerda)
            update_file()
            return jsonify(ciscomerda), 200
    update_file()
    return jsonify([]), 404

app.run("0.0.0.0")