const fullData = [
    { x: new Date('2025-07-15'), y: 16260 },
    { x: new Date('2025-07-16'), y: 16270 },
    { x: new Date('2025-07-17'), y: 16330 },
    { x: new Date('2025-07-18'), y: 16290 },
    { x: new Date('2025-07-21'), y: 16310 },
    { x: new Date('2025-07-22'), y: 16310 },
    { x: new Date('2025-07-23'), y: 16290 },
    { x: new Date('2025-07-24'), y: 16285 },
    { x: new Date('2025-07-25'), y: 16315 },
    { x: new Date('2025-07-28'), y: 16340 },
    { x: new Date('2025-07-29'), y: 16394.5 },
    { x: new Date('2025-07-30'), y: 16390 },
    { x: new Date('2025-07-31'), y: 16455 },
    { x: new Date('2025-08-01'), y: 16490 },
    { x: new Date('2025-08-04'), y: 16390 },
    { x: new Date('2025-08-05'), y: 16380 },
    { x: new Date('2025-08-06'), y: 16360 },
    { x: new Date('2025-08-07'), y: 16290 },
    { x: new Date('2025-08-08'), y: 16290 },
    { x: new Date('2025-08-11'), y: 16270 },
    { x: new Date('2025-08-12'), y: 16285 },
    { x: new Date('2025-08-13'), y: 16194 },
    { x: new Date('2025-08-14'), y: 16110.5 },
    { x: new Date('2025-08-15'), y: 16160 },
    { x: new Date('2025-08-18'), y: 16160 },
    { x: new Date('2025-08-19'), y: 16240 },
    { x: new Date('2025-08-20'), y: 16267.5 },
    { x: new Date('2025-08-21'), y: 16285 },
    { x: new Date('2025-08-22'), y: 16340 },
    { x: new Date('2025-08-25'), y: 16254.5 },
    { x: new Date('2025-08-26'), y: 16294.5 },
    { x: new Date('2025-08-27'), y: 16360 },
    { x: new Date('2025-08-28'), y: 16345 },
    { x: new Date('2025-08-29'), y: 16490 },
    { x: new Date('2025-09-01'), y: 16415 },
    { x: new Date('2025-09-02'), y: 16400 },
    { x: new Date('2025-09-03'), y: 16414.5 },
    { x: new Date('2025-09-04'), y: 16420 },
    { x: new Date('2025-09-05'), y: 16420 },
    { x: new Date('2025-09-08'), y: 16304 },
    { x: new Date('2025-09-09'), y: 16475 },
    { x: new Date('2025-09-10'), y: 16460 },
    { x: new Date('2025-09-11'), y: 16460 },
    { x: new Date('2025-09-12'), y: 16377.5 },
    { x: new Date('2025-09-15'), y: 16410 },
    { x: new Date('2025-09-16'), y: 16440 },
    { x: new Date('2025-09-17'), y: 16430 },
    { x: new Date('2025-09-18'), y: 16505 },
    { x: new Date('2025-09-19'), y: 16590 },
    { x: new Date('2025-09-22'), y: 16605 },
    { x: new Date('2025-09-23'), y: 16665 },
    { x: new Date('2025-09-24'), y: 16675 },
    { x: new Date('2025-09-25'), y: 16740 },
    { x: new Date('2025-09-26'), y: 16730 },
    { x: new Date('2025-09-29'), y: 16670 },
    { x: new Date('2025-09-30'), y: 16665 },
    { x: new Date('2025-10-01'), y: 16605 },
    { x: new Date('2025-10-02'), y: 16585 },
    { x: new Date('2025-10-03'), y: 16535 },
    { x: new Date('2025-10-06'), y: 16550 },
    { x: new Date('2025-10-07'), y: 16540 },
    { x: new Date('2025-10-08'), y: 16560 },
    { x: new Date('2025-10-09'), y: 16545 },
    { x: new Date('2025-10-10'), y: 16550 },
    { x: new Date('2025-10-13'), y: 16560 },
    { x: new Date('2025-10-14'), y: 16575 },
    { x: new Date('2025-10-15'), y: 16565 },
    { x: new Date('2025-10-16'), y: 16570 },
    { x: new Date('2025-10-17'), y: 16580 },
    { x: new Date('2025-10-20'), y: 16575 },
    { x: new Date('2025-10-21'), y: 16590 },
    { x: new Date('2025-10-22'), y: 16575 },
    { x: new Date('2025-10-23'), y: 16620 },
    { x: new Date('2025-10-24'), y: 16595 },
    { x: new Date('2025-10-27'), y: 16615 },
    { x: new Date('2025-10-28'), y: 16605 },
    { x: new Date('2025-10-29'), y: 16615 },
    { x: new Date('2025-10-30'), y: 16640 },
    { x: new Date('2025-10-31'), y: 16630 },
    { x: new Date('2025-11-03'), y: 16655 },
    { x: new Date('2025-11-04'), y: 16697 },
    { x: new Date('2025-11-05'), y: 16705 },
    { x: new Date('2025-11-06'), y: 16694 },
    { x: new Date('2025-11-07'), y: 16684.5 },
    { x: new Date('2025-11-10'), y: 16650 },
    { x: new Date('2025-11-11'), y: 16685 },
    { x: new Date('2025-11-12'), y: 16697 },
    { x: new Date('2025-11-13'), y: 16725 },
    { x: new Date('2025-11-14'), y: 16694 },
    { x: new Date('2025-11-17'), y: 16725 },
    { x: new Date('2025-11-18'), y: 16740 },
    { x: new Date('2025-11-19'), y: 16692.5 },
    { x: new Date('2025-11-20'), y: 16730 },
    { x: new Date('2025-11-21'), y: 16694 },
    { x: new Date('2025-11-24'), y: 16692.5 },
    { x: new Date('2025-11-25'), y: 16660 },
    { x: new Date('2025-11-26'), y: 16660 },
    { x: new Date('2025-11-27'), y: 16640 },
    { x: new Date('2025-11-28'), y: 16655 },
    { x: new Date('2025-12-01'), y: 16655 },
    { x: new Date('2025-12-02'), y: 16620 },
    { x: new Date('2025-12-03'), y: 16620 },
    { x: new Date('2025-12-04'), y: 16645 },
    { x: new Date('2025-12-05'), y: 16640 },
    { x: new Date('2025-12-08'), y: 16690 },
    { x: new Date('2025-12-09'), y: 16665 },
    { x: new Date('2025-12-10'), y: 16685 },
    { x: new Date('2025-12-11'), y: 16670 },
    { x: new Date('2025-12-12'), y: 16640 },
    { x: new Date('2025-12-15'), y: 16665 },
    { x: new Date('2025-12-16'), y: 16690 },
    { x: new Date('2025-12-17'), y: 16685 },
    { x: new Date('2025-12-18'), y: 16715 },
    { x: new Date('2025-12-19'), y: 16740 },
    { x: new Date('2025-12-22'), y: 16770 },
    { x: new Date('2025-12-23'), y: 16770 },
    { x: new Date('2025-12-24'), y: 16755 },
    { x: new Date('2025-12-25'), y: 16755 },
    { x: new Date('2025-12-26'), y: 16755 },
    { x: new Date('2025-12-29'), y: 16785 },
    { x: new Date('2025-12-30'), y: 16760 },
    { x: new Date('2025-12-31'), y: 16675 },
    { x: new Date('2026-01-01'), y: 16675 },
    { x: new Date('2026-01-02'), y: 16720 },
    { x: new Date('2026-01-05'), y: 16740 },
    { x: new Date('2026-01-06'), y: 16750 },
    { x: new Date('2026-01-07'), y: 16775 },
    { x: new Date('2026-01-08'), y: 16790 },
    { x: new Date('2026-01-09'), y: 16800 },
    { x: new Date('2026-01-12'), y: 16830 },
    { x: new Date('2026-01-13'), y: 16865 },
    { x: new Date('2026-01-14'), y: 16860 },
    { x: new Date('2026-01-15'), y: 16885 },
    { x: new Date('2026-01-16'), y: 16885 },
    { x: new Date('2026-01-19'), y: 16940 },
    { x: new Date('2026-01-20'), y: 16950 },
    { x: new Date('2026-01-21'), y: 16935 },
    { x: new Date('2026-01-22'), y: 16885 },
    { x: new Date('2026-01-23'), y: 16815 },
    { x: new Date('2026-01-26'), y: 16775 },
    { x: new Date('2026-01-27'), y: 16765 },
    { x: new Date('2026-01-28'), y: 16705 },
    { x: new Date('2026-01-29'), y: 16747.5 },
    { x: new Date('2026-01-30'), y: 16785 },
    { x: new Date('2026-02-02'), y: 16790 },
    { x: new Date('2026-02-03'), y: 16760 },
    { x: new Date('2026-02-04'), y: 16770 },
    { x: new Date('2026-02-05'), y: 16830 },
    { x: new Date('2026-02-06'), y: 16865 },
    { x: new Date('2026-02-09'), y: 16800 },
    { x: new Date('2026-02-10'), y: 16795 },
    { x: new Date('2026-02-11'), y: 16780 },
    { x: new Date('2026-02-12'), y: 16815 },
    { x: new Date('2026-02-13'), y: 16830 },
    { x: new Date('2026-02-16'), y: 16830 },
    { x: new Date('2026-02-17'), y: 16830 },
    { x: new Date('2026-02-18'), y: 16880 },
    { x: new Date('2026-02-19'), y: 16875 },
    { x: new Date('2026-02-20'), y: 16865 },
    { x: new Date('2026-02-23'), y: 16790 },
    { x: new Date('2026-02-24'), y: 16820 },
    { x: new Date('2026-02-25'), y: 16785 },
    { x: new Date('2026-02-26'), y: 16755 },
    { x: new Date('2026-02-27'), y: 16765 },
    { x: new Date('2026-03-02'), y: 16860 },
    { x: new Date('2026-03-03'), y: 16855 },
    { x: new Date('2026-03-04'), y: 16885 },
    { x: new Date('2026-03-05'), y: 16880 },
    { x: new Date('2026-03-06'), y: 16905 },
    { x: new Date('2026-03-09'), y: 16940 },
    { x: new Date('2026-03-10'), y: 16857.5 },
    { x: new Date('2026-03-11'), y: 16870 },
    { x: new Date('2026-03-12'), y: 16890 },
    { x: new Date('2026-03-13'), y: 16940 },
    { x: new Date('2026-03-16'), y: 16990 },
    { x: new Date('2026-03-17'), y: 16980 },
    { x: new Date('2026-03-18'), y: 16980 },
    { x: new Date('2026-03-19'), y: 16980 },
    { x: new Date('2026-03-20'), y: 16980 },
    { x: new Date('2026-03-23'), y: 16980 },
    { x: new Date('2026-03-24'), y: 16980 },
    { x: new Date('2026-03-25'), y: 16910 },
    { x: new Date('2026-03-26'), y: 16900 },
    { x: new Date('2026-03-27'), y: 16965 },
    { x: new Date('2026-03-30'), y: 16990 },
    { x: new Date('2026-03-31'), y: 16994.5 },
    { x: new Date('2026-04-01'), y: 16980 },
    { x: new Date('2026-04-02'), y: 16994.5 },
    { x: new Date('2026-04-03'), y: 16994.5 },
    { x: new Date('2026-04-06'), y: 17035 },
    { x: new Date('2026-04-07'), y: 17094.5 },
    { x: new Date('2026-04-08'), y: 17010 },
    { x: new Date('2026-04-09'), y: 17085 },
    { x: new Date('2026-04-10'), y: 17090 },
    { x: new Date('2026-04-13'), y: 17100 },
    { x: new Date('2026-04-14'), y: 17115 },
    { x: new Date('2026-04-15'), y: 17135 },
    { x: new Date('2026-04-16'), y: 17130 },
    { x: new Date('2026-04-17'), y: 17185 },
    { x: new Date('2026-04-20'), y: 17170 },
    { x: new Date('2026-04-21'), y: 17144 },
    { x: new Date('2026-04-22'), y: 17175 },
    { x: new Date('2026-04-23'), y: 17285 },
    { x: new Date('2026-04-24'), y: 17192.5 },
    { x: new Date('2026-04-27'), y: 17190 },
    { x: new Date('2026-04-28'), y: 17215 },
    { x: new Date('2026-04-29'), y: 17280 },
    { x: new Date('2026-04-30'), y: 17310 },
    { x: new Date('2026-05-01'), y: 17310 },
    { x: new Date('2026-05-04'), y: 17370 },
    { x: new Date('2026-05-05'), y: 17415 },
    { x: new Date('2026-05-06'), y: 17385 },
    { x: new Date('2026-05-07'), y: 17335 },
    { x: new Date('2026-05-08'), y: 17365 },
    { x: new Date('2026-05-11'), y: 17410 },
    { x: new Date('2026-05-12'), y: 17494.5 },
    { x: new Date('2026-05-13'), y: 17465 },
    { x: new Date('2026-05-14'), y: 17465 },
    { x: new Date('2026-05-15'), y: 17465 },
    { x: new Date('2026-05-18'), y: 17645 },
    { x: new Date('2026-05-19'), y: 17700 },
    { x: new Date('2026-05-20'), y: 17605 },
    { x: new Date('2026-05-21'), y: 17645 },
    { x: new Date('2026-05-22'), y: 17695 },
    { x: new Date('2026-05-25'), y: 17735 },
    { x: new Date('2026-05-26'), y: 17780 },
    { x: new Date('2026-05-27'), y: 17780 },
    { x: new Date('2026-05-28'), y: 17780 },
    { x: new Date('2026-05-29'), y: 17870 },
    { x: new Date('2026-06-01'), y: 17870 },
    { x: new Date('2026-06-02'), y: 17835 },
    { x: new Date('2026-06-03'), y: 17945 },
    { x: new Date('2026-06-04'), y: 18025 },
    { x: new Date('2026-06-05'), y: 18015 },
    { x: new Date('2026-06-08'), y: 18175 },
    { x: new Date('2026-06-09'), y: 18055 },
    { x: new Date('2026-06-10'), y: 17952.5 },
    { x: new Date('2026-06-11'), y: 17980 },
    { x: new Date('2026-06-12'), y: 17870 },
    { x: new Date('2026-06-15'), y: 17694.5 },
    { x: new Date('2026-06-16'), y: 17694.5 },
    { x: new Date('2026-06-17'), y: 17735 },
    { x: new Date('2026-06-18'), y: 17705 },
    { x: new Date('2026-06-19'), y: 17780 },
    { x: new Date('2026-06-22'), y: 17830 },
    { x: new Date('2026-06-23'), y: 17840 },
    { x: new Date('2026-06-24'), y: 17930 },
    { x: new Date('2026-06-25'), y: 17920 },
    { x: new Date('2026-06-26'), y: 17910 },
    { x: new Date('2026-06-29'), y: 17840 },
    { x: new Date('2026-06-30'), y: 17880 },
    { x: new Date('2026-07-01'), y: 17935 },
    { x: new Date('2026-07-02'), y: 17993 },
    { x: new Date('2026-07-03'), y: 17950 },
    { x: new Date('2026-07-06'), y: 17990 },
    { x: new Date('2026-07-07'), y: 17975 },
    { x: new Date('2026-07-08'), y: 17994 },
    { x: new Date('2026-07-09'), y: 18075 },
    { x: new Date('2026-07-10'), y: 18050 },
    { x: new Date('2026-07-13'), y: 18105 },
    { x: new Date('2026-07-14'), y: 18085 },
    { x: new Date('2026-07-15'), y: 18065 },
    { x: new Date('2026-07-16'), y: 17985 },
    { x: new Date('2026-07-17'), y: 17890 },
    { x: new Date('2026-07-20'), y: 17935 },
    { x: new Date('2026-07-21'), y: 17885 },
    { x: new Date('2026-07-22'), y: 17880 },
    { x: new Date('2026-07-23'), y: 17895 },
    { x: new Date('2026-07-24'), y: 17940 },
    { x: new Date('2026-07-27'), y: 18005 },
    { x: new Date('2026-07-28'), y: 18060 },
    { x: new Date('2026-07-29'), y: 18050 },
    { x: new Date('2026-07-30'), y: 18080 },
    { x: new Date('2026-07-31'), y: 17994 },
    { x: new Date('2026-08-03'), y: 17985 },
    { x: new Date('2026-08-04'), y: 18020 },
    { x: new Date('2026-08-05'), y: 17930 },
    { x: new Date('2026-08-06'), y: 17915 },
    { x: new Date('2026-08-07'), y: 17890 },
    { x: new Date('2026-08-10'), y: 17755 },
    { x: new Date('2026-08-11'), y: 17835 },
    { x: new Date('2026-08-12'), y: 17870 },
    { x: new Date('2026-08-13'), y: 17865 },
    { x: new Date('2026-08-14'), y: 17825 },
    { x: new Date('2026-08-17'), y: 17825 },
    { x: new Date('2026-08-18'), y: 17855 },
    { x: new Date('2026-08-19'), y: 17830 },
    { x: new Date('2026-08-20'), y: 17742.5 },
    { x: new Date('2026-08-21'), y: 17690 },
    { x: new Date('2026-08-24'), y: 17710 },
    { x: new Date('2026-08-25'), y: 17710 },
    { x: new Date('2026-08-26'), y: 17700 },
    { x: new Date('2026-08-27'), y: 17720 },
    { x: new Date('2026-08-28'), y: 17690 },
    { x: new Date('2026-08-31'), y: 17715 },
    { x: new Date('2026-09-01'), y: 17715 },
    { x: new Date('2026-09-02'), y: 17755 },
    { x: new Date('2026-09-03'), y: 17655 },
    { x: new Date('2026-09-04'), y: 17635 },
    { x: new Date('2026-09-07'), y: 17635 },
    { x: new Date('2026-09-08'), y: 17630 },
    { x: new Date('2026-09-09'), y: 17505 },
    { x: new Date('2026-09-10'), y: 17535 },
    { x: new Date('2026-09-11'), y: 17590 },
    { x: new Date('2026-09-14'), y: 17645 },
    { x: new Date('2026-09-15'), y: 17685 },
    { x: new Date('2026-09-16'), y: 17680 },
    { x: new Date('2026-09-17'), y: 17740 },
    { x: new Date('2026-09-18'), y: 17735 },
    { x: new Date('2026-09-21'), y: 17830 },
    { x: new Date('2026-09-22'), y: 17855 },
    { x: new Date('2026-09-23'), y: 17800 },
    { x: new Date('2026-09-24'), y: 17890 },
    { x: new Date('2026-09-25'), y: 17885 },
    { x: new Date('2026-09-28'), y: 17970 },
    { x: new Date('2026-09-29'), y: 17965 },
    { x: new Date('2026-09-30'), y: 17875 },
    { x: new Date('2026-10-01'), y: 17945 },
    { x: new Date('2026-10-02'), y: 17873 },
    { x: new Date('2026-10-05'), y: 17900 },
    { x: new Date('2026-10-06'), y: 17895 },
    { x: new Date('2026-10-07'), y: 17880 },
    { x: new Date('2026-10-08'), y: 17895 },
    { x: new Date('2026-10-09'), y: 17880 },
    { x: new Date('2026-10-12'), y: 17900 },
    { x: new Date('2026-10-13'), y: 17890 },
    { x: new Date('2026-10-14'), y: 17900 },
    { x: new Date('2026-10-15'), y: 17925 },
    { x: new Date('2026-10-16'), y: 18005 },
    { x: new Date('2026-10-19'), y: 18035 },
    { x: new Date('2026-10-20'), y: 17985 },
    { x: new Date('2026-10-21'), y: 17997.8 },
    { x: new Date('2026-10-22'), y: 18041.4 },
    { x: new Date('2026-10-23'), y: 18084.2462 },
    { x: new Date('2026-10-24'), y: 18089.9737 },
    { x: new Date('2026-10-25'), y: 18089.9737 },
    { x: new Date('2026-10-26'), y: 18092.9055 },
    { x: new Date('2026-10-27'), y: 18173.8804 },
    { x: new Date('2026-10-28'), y: 18155.7036 },
    { x: new Date('2026-10-29'), y: 18177.148 },
    { x: new Date('2026-10-30'), y: 18143.712 },
    { x: new Date('2026-10-31'), y: 18132.7013 },
    { x: new Date('2026-11-01'), y: 18131.9505 },
    { x: new Date('2026-11-02'), y: 18138.0638 },
    { x: new Date('2026-11-03'), y: 18146.3015 },
    { x: new Date('2026-11-04'), y: 18139.8711 },
    { x: new Date('2026-11-05'), y: 18134.4055 },
    { x: new Date('2026-11-06'), y: 18079.687 },
    { x: new Date('2026-11-07'), y: 18098.9807 },
    { x: new Date('2026-11-08'), y: 18097.9028 }];

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);