page.jsx

"use client";

import React, {useEffect, useState} from "react";
import config from '../config.js';

import FetchService from "./help/fetch-service";
import Donut from "./components/donut.tsx";
import DateInput from "./components/date-input";
import DataForm from "./components/bar-chart/form";
import BarChart from "./components/bar-chart/chart";
import Line_Chart from "./components/line_chart.tsx";

export default function Page() {
    const [donutValues, setDonutValues] = useState([]);
    const [chartData, setChartData] = useState([]);
    const [isLoading, setIsLoading] = useState(false);
    const Loader = () => <div>Loading...</div>;

    export default function Page() {
        const [donutValues, setDonutValues] = useState([]);
        const [chartData, setChartData] = useState([]);
        const [isLoading, setIsLoading] = useState(false);
        const Loader = () => <div>Loading...</div>;

        const handleFormSubmit = async (formData) => {
            setIsLoading(true);
            const url = `${config.apiUrl}/bar-chart/${formData.startDate}/${formData.endDate}/${formData.granularity}?page=1`;
            const response = await fetch(url);
            const data = await response.json();
            console.log(data);
            setChartData(data);
            setIsLoading(false);
        };

        useEffect(() => {
            (async () => {
                const data = await FetchService.getDonutContent();
                const formattedData = data.map((x) => ({
                    id: x.region,
                    count: x.occurences
                }));
                setDonutValues(formattedData);
            })();
        }, []);

        return (
            <>
                <div className="card-container">
                    <div className="card">
                        <h3>L’évolution du prix de vente moyen du mètre carré </h3>
                        <Line_Chart/>
                    </div>
                    <div className="card">
                        <h3>Nombre des ventes par période</h3>
                        {isLoading && <Loader/>}
                        <DataForm onSubmit={handleFormSubmit}/>
                        <BarChart data={chartData}/>
                    </div>
                    <div className="card">
                        <h3>Répartition des ventes par régions</h3>
                        <DateInput/>
                        <Donut data={donutValues}/>
                    </div>
                </div>
            </>
        );
    }
}