const fullData = [
    { x: new Date('2025-07-15'), y: 109.22 },
    { x: new Date('2025-07-16'), y: 110.03 },
    { x: new Date('2025-07-17'), y: 109.89 },
    { x: new Date('2025-07-18'), y: 109.46 },
    { x: new Date('2025-07-21'), y: 110.66 },
    { x: new Date('2025-07-22'), y: 111.23 },
    { x: new Date('2025-07-23'), y: 111.19 },
    { x: new Date('2025-07-24'), y: 110.78 },
    { x: new Date('2025-07-25'), y: 110.48 },
    { x: new Date('2025-07-28'), y: 110 },
    { x: new Date('2025-07-29'), y: 110.44 },
    { x: new Date('2025-07-30'), y: 109.63 },
    { x: new Date('2025-07-31'), y: 109.15 },
    { x: new Date('2025-08-01'), y: 111.9 },
    { x: new Date('2025-08-04'), y: 111.43 },
    { x: new Date('2025-08-05'), y: 110.97 },
    { x: new Date('2025-08-06'), y: 111.01 },
    { x: new Date('2025-08-07'), y: 110.72 },
    { x: new Date('2025-08-08'), y: 110.27 },
    { x: new Date('2025-08-11'), y: 109.83 },
    { x: new Date('2025-08-12'), y: 110.16 },
    { x: new Date('2025-08-13'), y: 109.88 },
    { x: new Date('2025-08-14'), y: 109.03 },
    { x: new Date('2025-08-15'), y: 109.79 },
    { x: new Date('2025-08-18'), y: 109.28 },
    { x: new Date('2025-08-19'), y: 109.97 },
    { x: new Date('2025-08-20'), y: 110.42 },
    { x: new Date('2025-08-21'), y: 109.76 },
    { x: new Date('2025-08-22'), y: 111.2 },
    { x: new Date('2025-08-25'), y: 109.99 },
    { x: new Date('2025-08-26'), y: 110.55 },
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    { x: new Date('2025-09-19'), y: 112.12 },
    { x: new Date('2025-09-22'), y: 112.41 },
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    { x: new Date('2025-09-25'), y: 111.76 },
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    { x: new Date('2025-10-14'), y: 109.16 },
    { x: new Date('2025-10-15'), y: 109.66 },
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    { x: new Date('2025-10-21'), y: 109.19 },
    { x: new Date('2025-10-22'), y: 109.06 },
    { x: new Date('2025-10-23'), y: 108.94 },
    { x: new Date('2025-10-24'), y: 108.56 },
    { x: new Date('2025-10-27'), y: 108.69 },
    { x: new Date('2025-10-28'), y: 109.16 },
    { x: new Date('2025-10-29'), y: 108.79 },
    { x: new Date('2025-10-30'), y: 107.97 },
    { x: new Date('2025-10-31'), y: 107.99 },
    { x: new Date('2025-11-03'), y: 108 },
    { x: new Date('2025-11-04'), y: 108.65 },
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    { x: new Date('2025-11-07'), y: 108.75 },
    { x: new Date('2025-11-10'), y: 108.01 },
    { x: new Date('2025-11-11'), y: 108.23 },
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    { x: new Date('2025-11-17'), y: 107.73 },
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    { x: new Date('2025-11-25'), y: 106.76 },
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    { x: new Date('2025-11-27'), y: 106.46 },
    { x: new Date('2025-11-28'), y: 106.64 },
    { x: new Date('2025-12-01'), y: 107.13 },
    { x: new Date('2025-12-02'), y: 106.63 },
    { x: new Date('2025-12-03'), y: 107.05 },
    { x: new Date('2025-12-04'), y: 107.32 },
    { x: new Date('2025-12-05'), y: 107.12 },
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    { x: new Date('2025-12-15'), y: 107.37 },
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    { x: new Date('2025-12-17'), y: 107.17 },
    { x: new Date('2025-12-18'), y: 107.46 },
    { x: new Date('2025-12-19'), y: 106.11 },
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    { x: new Date('2025-12-23'), y: 107.35 },
    { x: new Date('2025-12-24'), y: 107.45 },
    { x: new Date('2025-12-25'), y: 107.54 },
    { x: new Date('2025-12-26'), y: 107.02 },
    { x: new Date('2025-12-29'), y: 107.56 },
    { x: new Date('2025-12-30'), y: 107.16 },
    { x: new Date('2025-12-31'), y: 106.44 },
    { x: new Date('2026-01-01'), y: 106.44 },
    { x: new Date('2026-01-02'), y: 106.61 },
    { x: new Date('2026-01-05'), y: 107.04 },
    { x: new Date('2026-01-06'), y: 106.94 },
    { x: new Date('2026-01-07'), y: 107.01 },
    { x: new Date('2026-01-08'), y: 107.03 },
    { x: new Date('2026-01-09'), y: 106.41 },
    { x: new Date('2026-01-12'), y: 106.42 },
    { x: new Date('2026-01-13'), y: 105.97 },
    { x: new Date('2026-01-14'), y: 106.41 },
    { x: new Date('2026-01-15'), y: 106.44 },
    { x: new Date('2026-01-16'), y: 106.79 },
    { x: new Date('2026-01-19'), y: 107.14 },
    { x: new Date('2026-01-20'), y: 107.18 },
    { x: new Date('2026-01-21'), y: 106.99 },
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    { x: new Date('2026-02-09'), y: 107.77 },
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    { x: new Date('2026-02-12'), y: 110.1 },
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    { x: new Date('2026-02-19'), y: 108.87 },
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    { x: new Date('2026-02-26'), y: 107.32 },
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    { x: new Date('2026-03-05'), y: 107.12 },
    { x: new Date('2026-03-06'), y: 107.14 },
    { x: new Date('2026-03-09'), y: 107.44 },
    { x: new Date('2026-03-10'), y: 106.66 },
    { x: new Date('2026-03-11'), y: 106.14 },
    { x: new Date('2026-03-12'), y: 106 },
    { x: new Date('2026-03-13'), y: 106.06 },
    { x: new Date('2026-03-16'), y: 106.82 },
    { x: new Date('2026-03-17'), y: 106.79 },
    { x: new Date('2026-03-18'), y: 106.21 },
    { x: new Date('2026-03-19'), y: 107.65 },
    { x: new Date('2026-03-20'), y: 106.64 },
    { x: new Date('2026-03-23'), y: 107.17 },
    { x: new Date('2026-03-24'), y: 107 },
    { x: new Date('2026-03-25'), y: 106.04 },
    { x: new Date('2026-03-26'), y: 105.75 },
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    { x: new Date('2026-03-30'), y: 106.37 },
    { x: new Date('2026-03-31'), y: 107.08 },
    { x: new Date('2026-04-01'), y: 106.93 },
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    { x: new Date('2026-04-13'), y: 107.24 },
    { x: new Date('2026-04-14'), y: 107.79 },
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    { x: new Date('2026-04-16'), y: 107.62 },
    { x: new Date('2026-04-17'), y: 108.33 },
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    { x: new Date('2026-04-21'), y: 107.56 },
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    { x: new Date('2026-04-24'), y: 107.88 },
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    { x: new Date('2026-04-29'), y: 107.72 },
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    { x: new Date('2026-05-01'), y: 110.22 },
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    { x: new Date('2026-05-15'), y: 110 },
    { x: new Date('2026-05-18'), y: 111.09 },
    { x: new Date('2026-05-19'), y: 111.28 },
    { x: new Date('2026-05-20'), y: 110.78 },
    { x: new Date('2026-05-21'), y: 110.99 },
    { x: new Date('2026-05-22'), y: 111.15 },
    { x: new Date('2026-05-25'), y: 111.6 },
    { x: new Date('2026-05-26'), y: 111.61 },
    { x: new Date('2026-05-27'), y: 111.46 },
    { x: new Date('2026-05-28'), y: 111.66 },
    { x: new Date('2026-05-29'), y: 112.2 },
    { x: new Date('2026-06-01'), y: 111.93 },
    { x: new Date('2026-06-02'), y: 111.54 },
    { x: new Date('2026-06-03'), y: 112.12 },
    { x: new Date('2026-06-04'), y: 112.64 },
    { x: new Date('2026-06-05'), y: 112.37 },
    { x: new Date('2026-06-08'), y: 113.47 },
    { x: new Date('2026-06-09'), y: 112.59 },
    { x: new Date('2026-06-10'), y: 111.82 },
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    { x: new Date('2026-06-12'), y: 111.53 },
    { x: new Date('2026-06-15'), y: 110.36 },
    { x: new Date('2026-06-16'), y: 110.28 },
    { x: new Date('2026-06-17'), y: 110.4 },
    { x: new Date('2026-06-18'), y: 109.71 },
    { x: new Date('2026-06-19'), y: 110.23 },
    { x: new Date('2026-06-22'), y: 110.36 },
    { x: new Date('2026-06-23'), y: 110.41 },
    { x: new Date('2026-06-24'), y: 110.83 },
    { x: new Date('2026-06-25'), y: 110.75 },
    { x: new Date('2026-06-26'), y: 110.72 },
    { x: new Date('2026-06-29'), y: 110.17 },
    { x: new Date('2026-06-30'), y: 109.99 },
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    { x: new Date('2026-07-02'), y: 111.69 },
    { x: new Date('2026-07-03'), y: 111.24 },
    { x: new Date('2026-07-06'), y: 111 },
    { x: new Date('2026-07-07'), y: 110.89 },
    { x: new Date('2026-07-08'), y: 110.67 },
    { x: new Date('2026-07-09'), y: 111.31 },
    { x: new Date('2026-07-10'), y: 111.63 },
    { x: new Date('2026-07-13'), y: 111.46 },
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    { x: new Date('2026-07-15'), y: 111.39 },
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    { x: new Date('2026-07-23'), y: 109.22 },
    { x: new Date('2026-07-24'), y: 109.49 },
    { x: new Date('2026-07-27'), y: 109.96 },
    { x: new Date('2026-07-28'), y: 110.23 },
    { x: new Date('2026-07-29'), y: 110.47 },
    { x: new Date('2026-07-30'), y: 113.33 },
    { x: new Date('2026-07-31'), y: 114.19 },
    { x: new Date('2026-08-03'), y: 114.43 },
    { x: new Date('2026-08-04'), y: 114.24 },
    { x: new Date('2026-08-05'), y: 113.65 },
    { x: new Date('2026-08-06'), y: 113.08 },
    { x: new Date('2026-08-07'), y: 113.37 },
    { x: new Date('2026-08-10'), y: 111.46 },
    { x: new Date('2026-08-11'), y: 111.97 },
    { x: new Date('2026-08-12'), y: 112.09 },
    { x: new Date('2026-08-13'), y: 112.01 },
    { x: new Date('2026-08-14'), y: 111.89 },
    { x: new Date('2026-08-17'), y: 111.8 },
    { x: new Date('2026-08-18'), y: 111.85 },
    { x: new Date('2026-08-19'), y: 112.73 },
    { x: new Date('2026-08-20'), y: 111.55 },
    { x: new Date('2026-08-21'), y: 111.3 },
    { x: new Date('2026-08-24'), y: 111.31 },
    { x: new Date('2026-08-25'), y: 111.26 },
    { x: new Date('2026-08-26'), y: 111.11 },
    { x: new Date('2026-08-27'), y: 111.18 },
    { x: new Date('2026-08-28'), y: 110.52 },
    { x: new Date('2026-08-31'), y: 110.91 },
    { x: new Date('2026-09-01'), y: 110.6 },
    { x: new Date('2026-09-02'), y: 111.87 },
    { x: new Date('2026-09-03'), y: 113.31 },
    { x: new Date('2026-09-04'), y: 112.87 },
    { x: new Date('2026-09-07'), y: 114.24 },
    { x: new Date('2026-09-08'), y: 114.49 },
    { x: new Date('2026-09-09'), y: 114 },
    { x: new Date('2026-09-10'), y: 113.55 },
    { x: new Date('2026-09-11'), y: 114.56 },
    { x: new Date('2026-09-14'), y: 114.32 },
    { x: new Date('2026-09-15'), y: 114.03 },
    { x: new Date('2026-09-16'), y: 113.13 },
    { x: new Date('2026-09-17'), y: 113.74 },
    { x: new Date('2026-09-18'), y: 113.04 },
    { x: new Date('2026-09-21'), y: 113.3 },
    { x: new Date('2026-09-22'), y: 113.45 },
    { x: new Date('2026-09-23'), y: 112.44 },
    { x: new Date('2026-09-24'), y: 112.62 },
    { x: new Date('2026-09-25'), y: 113.72 },
    { x: new Date('2026-09-28'), y: 114.19 },
    { x: new Date('2026-09-29'), y: 114.21 },
    { x: new Date('2026-09-30'), y: 113.55 },
    { x: new Date('2026-10-01'), y: 113.53 },
    { x: new Date('2026-10-02'), y: 113.22 },
    { x: new Date('2026-10-05'), y: 113.35 },
    { x: new Date('2026-10-06'), y: 113.18 },
    { x: new Date('2026-10-07'), y: 113.1 },
    { x: new Date('2026-10-08'), y: 113.34 },
    { x: new Date('2026-10-09'), y: 112.93 },
    { x: new Date('2026-10-12'), y: 112.84 },
    { x: new Date('2026-10-13'), y: 113 },
    { x: new Date('2026-10-14'), y: 113.06 },
    { x: new Date('2026-10-15'), y: 113.45 },
    { x: new Date('2026-10-16'), y: 113.95 },
    { x: new Date('2026-10-19'), y: 113.79 },
    { x: new Date('2026-10-20'), y: 113.71 },
    { x: new Date('2026-10-21'), y: 113.9 },
    { x: new Date('2026-10-22'), y: 114.66 },
    { x: new Date('2026-10-23'), y: 115.233916 },
    { x: new Date('2026-10-24'), y: 115.340527 },
    { x: new Date('2026-10-25'), y: 115.340527 },
    { x: new Date('2026-10-26'), y: 115.338262 },
    { x: new Date('2026-10-27'), y: 115.431052 },
    { x: new Date('2026-10-28'), y: 114.987679 },
    { x: new Date('2026-10-29'), y: 115.12036 },
    { x: new Date('2026-10-30'), y: 114.922067 },
    { x: new Date('2026-10-31'), y: 115.132356 },
    { x: new Date('2026-11-01'), y: 115.126931 },
    { x: new Date('2026-11-02'), y: 115.138917 },
    { x: new Date('2026-11-03'), y: 114.924783 },
    { x: new Date('2026-11-04'), y: 114.504063 },
    { x: new Date('2026-11-05'), y: 114.4984 },
    { x: new Date('2026-11-06'), y: 114.54911 },
    { x: new Date('2026-11-07'), y: 114.283608 },
    { x: new Date('2026-11-08'), y: 114.313326 }];

const options = {
    chart: {
        type: 'area',
        height: 300,
        toolbar: { show: false },
        zoom: { enabled: false }
    },
    series: [{ name: '', data: fullData }],
    xaxis: {
        type: 'datetime'
    },
    yaxis: {
        tickAmount: 10,
        labels: {
            formatter: val => `${val.toLocaleString('id-ID')}`,
            offsetX: -17
        }
    },
    grid: {
        padding: {
            left: -10,
            right: 0
        }
    },
    tooltip: {
        x: { format: 'dd MMM yyyy' },
        y: {
            formatter: val => `Rp ${val.toLocaleString('id-ID')}`
        }
    },
    stroke: {
        curve: 'smooth',
        width: 2
    },
    fill: {
        type: 'gradient',
        gradient: {
            shadeIntensity: 1,
            opacityFrom: 0.8,
            opacityTo: 0,
            stops: [0, 90, 100]
        }
    },
    colors: ['#007bff'],
    legend: { show: false },
    dataLabels: { enabled: false }
};

const chart = new ApexCharts(document.querySelector("#chart"), options);
chart.render();

function updateChart(months) {
    const sortedData = [...fullData].sort((a, b) => a.x - b.x);
    const latestDate = sortedData[sortedData.length - 1].x;

    const start = new Date(latestDate);
    start.setMonth(start.getMonth() - months);

    const startTime = start.getTime();

    const filtered = fullData.filter(item =>
        item.x >= startTime && item.x <= latestDate
    );

    chart.updateSeries([{ name: '', data: filtered }], true);

    chart.updateOptions({
        xaxis: {
            type: 'datetime',
            min: startTime,
            max: latestDate
        }
    });
}

document.querySelectorAll('.filter-btn').forEach(btn => {
    btn.addEventListener('click', () => {
        document.querySelectorAll('.filter-btn').forEach(b => b.classList.remove('active'));
        btn.classList.add('active');
        const months = parseInt(btn.dataset.months);
        updateChart(months);
    });
});
updateChart(1);