const fullData = [
    { x: new Date('2024-02-02'), y: 4182 },
    { x: new Date('2024-02-05'), y: 4194 },
    { x: new Date('2024-02-06'), y: 4197 },
    { x: new Date('2024-02-07'), y: 4182 },
    { x: new Date('2024-02-08'), y: 4173 },
    { x: new Date('2024-02-09'), y: 4177 },
    { x: new Date('2024-02-10'), y: 4162 },
    { x: new Date('2024-02-12'), y: 4162 },
    { x: new Date('2024-02-13'), y: 4154 },
    { x: new Date('2024-02-14'), y: 4180 },
    { x: new Date('2024-05-20'), y: 4259 },
    { x: new Date('2024-08-01'), y: 4327 },
    { x: new Date('2024-08-02'), y: 4329 },
    { x: new Date('2024-08-05'), y: 4307 },
    { x: new Date('2024-08-06'), y: 4311 },
    { x: new Date('2024-08-07'), y: 4272 },
    { x: new Date('2024-08-28'), y: 4129 },
    { x: new Date('2024-08-29'), y: 4103 },
    { x: new Date('2024-08-30'), y: 4127 },
    { x: new Date('2024-09-02'), y: 4136 },
    { x: new Date('2024-09-03'), y: 4148 },
    { x: new Date('2024-09-04'), y: 4124 },
    { x: new Date('2024-09-05'), y: 4104 },
    { x: new Date('2024-09-05'), y: 4106 },
    { x: new Date('2024-09-06'), y: 4091 },
    { x: new Date('2024-09-07'), y: 4117 },
    { x: new Date('2024-09-08'), y: 4117 },
    { x: new Date('2024-09-09'), y: 4111 },
    { x: new Date('2024-09-10'), y: 4113 },
    { x: new Date('2024-09-19'), y: 4097 },
    { x: new Date('2024-09-20'), y: 4023 },
    { x: new Date('2024-09-23'), y: 4040 },
    { x: new Date('2024-09-24'), y: 4048 },
    { x: new Date('2024-09-25'), y: 4019 },
    { x: new Date('2024-09-26'), y: 4051 },
    { x: new Date('2024-09-27'), y: 4040 },
    { x: new Date('2024-10-01'), y: 4051 },
    { x: new Date('2024-10-02'), y: 4057 },
    { x: new Date('2024-10-03'), y: 4105 },
    { x: new Date('2024-10-04'), y: 4123 },
    { x: new Date('2024-10-05'), y: 4171 },
    { x: new Date('2024-10-07'), y: 4171 },
    { x: new Date('2024-10-08'), y: 4182 },
    { x: new Date('2024-10-10'), y: 4188 },
    { x: new Date('2024-10-11'), y: 4171 },
    { x: new Date('2024-10-12'), y: 4145 },
    { x: new Date('2024-10-14'), y: 4145 },
    { x: new Date('2024-10-15'), y: 4148 },
    { x: new Date('2024-10-16'), y: 4145 },
    { x: new Date('2024-10-17'), y: 4145 },
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    { x: new Date('2024-10-20'), y: 4119 },
    { x: new Date('2024-10-21'), y: 4119 },
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    { x: new Date('2024-10-23'), y: 4151 },
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    { x: new Date('2024-10-27'), y: 4183 },
    { x: new Date('2024-10-28'), y: 4164 },
    { x: new Date('2024-10-29'), y: 4194 },
    { x: new Date('2024-10-30'), y: 4193 },
    { x: new Date('2024-10-31'), y: 4177 },
    { x: new Date('2024-11-01'), y: 4187 },
    { x: new Date('2024-11-02'), y: 4219 },
    { x: new Date('2024-11-03'), y: 4230 },
    { x: new Date('2024-11-04'), y: 4220 },
    { x: new Date('2024-11-05'), y: 4199 },
    { x: new Date('2024-11-06'), y: 4184 },
    { x: new Date('2024-11-07'), y: 4213 },
    { x: new Date('2024-11-08'), y: 4143 },
    { x: new Date('2024-11-09'), y: 4166 },
    { x: new Date('2024-11-10'), y: 4166 },
    { x: new Date('2024-11-11'), y: 4172 },
    { x: new Date('2024-11-12'), y: 4199 },
    { x: new Date('2024-11-13'), y: 4212 },
    { x: new Date('2024-11-14'), y: 4209 },
    { x: new Date('2024-11-15'), y: 4253 },
    { x: new Date('2024-11-16'), y: 4233 },
    { x: new Date('2024-11-17'), y: 4233 },
    { x: new Date('2024-11-18'), y: 4221 },
    { x: new Date('2024-11-19'), y: 4222 },
    { x: new Date('2024-11-21'), y: 4240 },
    { x: new Date('2024-11-22'), y: 4241 },
    { x: new Date('2024-11-23'), y: 4243 },
    { x: new Date('2024-11-24'), y: 4244 },
    { x: new Date('2024-11-26'), y: 4228 },
    { x: new Date('2024-11-27'), y: 4238 },
    { x: new Date('2024-11-28'), y: 4220 },
    { x: new Date('2024-11-29'), y: 4218 },
    { x: new Date('2024-12-01'), y: 4214 },
    { x: new Date('2024-12-02'), y: 4215 },
    { x: new Date('2024-12-03'), y: 4244 },
    { x: new Date('2024-12-04'), y: 4244 },
    { x: new Date('2024-12-06'), y: 4218 },
    { x: new Date('2024-12-07'), y: 4223 },
    { x: new Date('2024-12-08'), y: 4222 },
    { x: new Date('2024-12-09'), y: 4223 },
    { x: new Date('2024-12-10'), y: 4220 },
    { x: new Date('2024-12-11'), y: 4235 },
    { x: new Date('2024-12-12'), y: 4244 },
    { x: new Date('2024-12-13'), y: 4245 },
    { x: new Date('2024-12-14'), y: 4265 },
    { x: new Date('2024-12-15'), y: 4263 },
    { x: new Date('2024-12-16'), y: 4266 },
    { x: new Date('2024-12-17'), y: 4267 },
    { x: new Date('2024-12-18'), y: 4280 },
    { x: new Date('2024-12-19'), y: 4331 },
    { x: new Date('2024-12-20'), y: 4343 },
    { x: new Date('2024-12-22'), y: 4307 },
    { x: new Date('2024-12-23'), y: 4307 },
    { x: new Date('2024-12-24'), y: 4321 },
    { x: new Date('2024-12-25'), y: 4320 },
    { x: new Date('2024-12-27'), y: 4321 },
    { x: new Date('2024-12-30'), y: 4323 },
    { x: new Date('2024-12-31'), y: 4297 },
    { x: new Date('2025-01-02'), y: 4323 },
    { x: new Date('2025-01-03'), y: 4324 },
    { x: new Date('2025-01-04'), y: 4311 },
    { x: new Date('2025-01-06'), y: 4312 },
    { x: new Date('2025-01-15'), y: 4342 },
    { x: new Date('2025-01-16'), y: 4365 },
    { x: new Date('2025-01-17'), y: 4375 },
    { x: new Date('2025-01-19'), y: 4366 },
    { x: new Date('2025-01-20'), y: 4361 },
    { x: new Date('2025-01-21'), y: 4345 },
    { x: new Date('2025-01-22'), y: 4350 },
    { x: new Date('2025-01-23'), y: 4338 },
    { x: new Date('2025-01-24'), y: 4328 },
    { x: new Date('2025-01-25'), y: 4311 },
    { x: new Date('2025-01-26'), y: 4315 },
    { x: new Date('2025-01-27'), y: 4311 },
    { x: new Date('2025-01-28'), y: 4323 },
    { x: new Date('2025-01-29'), y: 4321 },
    { x: new Date('2025-01-31'), y: 4339 },
    { x: new Date('2025-02-01'), y: 4360 },
    { x: new Date('2025-02-03'), y: 4360 },
    { x: new Date('2025-02-04'), y: 4360 },
    { x: new Date('2025-02-06'), y: 4345 },
    { x: new Date('2025-02-07'), y: 4354 },
    { x: new Date('2025-02-08'), y: 4345 },
    { x: new Date('2025-02-09'), y: 4345 },
    { x: new Date('2025-02-10'), y: 4352 },
    { x: new Date('2025-02-11'), y: 4352 },
    { x: new Date('2025-02-12'), y: 4355 },
    { x: new Date('2025-02-13'), y: 4371 },
    { x: new Date('2025-02-14'), y: 4354 },
    { x: new Date('2025-02-17'), y: 4326 },
    { x: new Date('2025-02-18'), y: 4326 },
    { x: new Date('2025-02-19'), y: 4350 },
    { x: new Date('2025-02-20'), y: 4362 },
    { x: new Date('2025-02-24'), y: 4349 },
    { x: new Date('2025-02-25'), y: 4343 },
    { x: new Date('2025-02-26'), y: 4363 },
    { x: new Date('2025-02-27'), y: 4361 },
    { x: new Date('2025-02-28'), y: 4394 },
    { x: new Date('2025-03-01'), y: 4419 },
    { x: new Date('2025-03-02'), y: 4419 },
    { x: new Date('2025-03-03'), y: 4418 },
    { x: new Date('2025-03-04'), y: 4388 },
    { x: new Date('2025-03-06'), y: 4350 },
    { x: new Date('2025-03-07'), y: 4353 },
    { x: new Date('2025-03-08'), y: 4348 },
    { x: new Date('2025-03-10'), y: 4347 },
    { x: new Date('2025-03-11'), y: 4367 },
    { x: new Date('2025-03-12'), y: 4382.80 },
    { x: new Date('2025-03-13'), y: 4383.42 },
    { x: new Date('2025-03-14'), y: 4375.05 },
    { x: new Date('2025-03-15'), y: 4360.06 },
    { x: new Date('2025-03-16'), y: 4360.18 },
    { x: new Date('2025-03-17'), y: 4360.18 },
    { x: new Date('2025-03-18'), y: 4359.73 },
    { x: new Date('2025-03-19'), y: 4394.69 },
    { x: new Date('2025-03-20'), y: 4406.45 },
    { x: new Date('2025-03-21'), y: 4399.29 },
    { x: new Date('2025-03-22'), y: 4404.12 },
    { x: new Date('2025-03-23'), y: 4405.32 },
    { x: new Date('2025-03-24'), y: 4406.13 },
    { x: new Date('2025-03-25'), y: 4406.13 },
    { x: new Date('2025-03-26'), y: 4426.79 },
    { x: new Date('2025-03-27'), y: 4428.19 },
    { x: new Date('2025-03-28'), y: 4425.91 },
    { x: new Date('2025-03-30'), y: 4427.01 },
    { x: new Date('2025-03-31'), y: 4425.62 },
    { x: new Date('2025-04-01'), y: 4427.72 },
    { x: new Date('2025-04-02'), y: 4435.35 },
    { x: new Date('2025-04-03'), y: 4444.02 },
    { x: new Date('2025-04-04'), y: 4437.65 },
    { x: new Date('2025-04-05'), y: 4460.47 },
    { x: new Date('2025-04-06'), y: 4474.84 },
    { x: new Date('2025-04-07'), y: 4474.81 },
    { x: new Date('2025-04-08'), y: 4444.88 },
    { x: new Date('2025-04-09'), y: 4521.50 },
    { x: new Date('2025-04-10'), y: 4500.59 },
    { x: new Date('2025-04-11'), y: 4492.38 },
    { x: new Date('2025-04-12'), y: 4478.88 },
    { x: new Date('2025-04-13'), y: 4480.32 },
    { x: new Date('2025-04-14'), y: 4484.62 },
    { x: new Date('2025-04-15'), y: 4474.80 },
    { x: new Date('2025-04-16'), y: 4487.11 },
    { x: new Date('2025-04-17'), y: 4481.14 },
    { x: new Date('2025-04-18'), y: 4497.85 },
    { x: new Date('2025-04-19'), y: 4495.58 },
    { x: new Date('2025-04-20'), y: 4495.83 },
    { x: new Date('2025-04-21'), y: 4494.08 },
    { x: new Date('2025-04-22'), y: 4489.60 },
    { x: new Date('2025-04-23'), y: 4497.58 },
    { x: new Date('2025-04-24'), y: 4501.80 },
    { x: new Date('2025-04-26'), y: 4493.53 },
    { x: new Date('2025-04-27'), y: 4493.49 },
    { x: new Date('2025-04-28'), y: 4489.90 },
    { x: new Date('2025-05-02'), y: 4435.10 },
    { x: new Date('2025-05-05'), y: 4393.86 },
    { x: new Date('2025-05-06'), y: 4393.86 },
    { x: new Date('2025-05-08'), y: 4384.05 },
    { x: new Date('2025-05-09'), y: 4409.81 },
    { x: new Date('2025-05-10'), y: 4414.84 },
    { x: new Date('2025-05-11'), y: 4412.92 },
    { x: new Date('2025-05-12'), y: 4413.88 },
    { x: new Date('2025-05-13'), y: 4425.24 },
    { x: new Date('2025-05-14'), y: 4414.74 },
    { x: new Date('2025-05-15'), y: 4420.62 },
    { x: new Date('2025-05-16'), y: 4401.52 },
    { x: new Date('2025-05-17'), y: 4391.35 },
    { x: new Date('2025-05-19'), y: 4394.18 },
    { x: new Date('2025-05-20'), y: 4386.53 },
    { x: new Date('2025-05-21'), y: 4378.82 },
    { x: new Date('2025-05-22'), y: 4372.31 },
    { x: new Date('2025-05-24'), y: 4327.96 },
    { x: new Date('2025-05-26'), y: 4331.24 },
    { x: new Date('2025-05-27'), y: 4328.64 },
    { x: new Date('2025-06-04'), y: 4353.06 },
    { x: new Date('2025-06-05'), y: 4347.07 },
    { x: new Date('2025-06-06'), y: 4338.11 },
    { x: new Date('2025-06-07'), y: 4347.58 },
    { x: new Date('2025-06-08'), y: 4346.66 },
    { x: new Date('2025-06-10'), y: 4343.02 },
    { x: new Date('2025-06-11'), y: 4339.41 },
    { x: new Date('2025-06-12'), y: 4338.43 },
    { x: new Date('2025-06-13'), y: 4327.64 },
    { x: new Date('2025-06-14'), y: 4352.73 },
    { x: new Date('2025-06-15'), y: 4351.44 },
    { x: new Date('2025-06-16'), y: 4347.60 },
    { x: new Date('2025-06-17'), y: 4346.00 },
    { x: new Date('2025-06-18'), y: 4344.75 },
    { x: new Date('2025-06-20'), y: 4369.27 },
    { x: new Date('2025-06-21'), y: 4371.50 },
    { x: new Date('2025-06-22'), y: 4373.82 },
    { x: new Date('2025-06-23'), y: 4375.28 },
    { x: new Date('2025-06-24'), y: 4399.87 },
    { x: new Date('2025-06-25'), y: 4353.34 },
    { x: new Date('2025-06-26'), y: 4350.11 },
    { x: new Date('2025-06-27'), y: 4324.40 },
    { x: new Date('2025-06-28'), y: 4330.46 },
    { x: new Date('2025-06-29'), y: 4329.62 },
    { x: new Date('2025-06-30'), y: 4328.04 },
    { x: new Date('2025-07-01'), y: 4323.85 },
    { x: new Date('2025-07-02'), y: 4323.92 },
    { x: new Date('2025-07-04'), y: 4320.80 },
    { x: new Date('2025-07-05'), y: 4319.60 },
    { x: new Date('2025-07-06'), y: 4319.13 },
    { x: new Date('2025-07-07'), y: 4319.49 },
    { x: new Date('2025-07-08'), y: 4334.86 },
    { x: new Date('2025-07-09'), y: 4336.72 },
    { x: new Date('2025-07-10'), y: 4337.00 },
    { x: new Date('2025-07-12'), y: 4329.39 },
    { x: new Date('2025-07-13'), y: 4329.29 },
    { x: new Date('2025-07-14'), y: 4330.28 },
    { x: new Date('2025-07-16'), y: 4341.53 },
    { x: new Date('2025-07-17'), y: 4347.57 },
    { x: new Date('2025-07-19'), y: 4347.89 },
    { x: new Date('2025-07-20'), y: 4351.30 },
    { x: new Date('2025-07-21'), y: 4346.65 },
    { x: new Date('2025-07-22'), y: 4350.54 },
    { x: new Date('2025-07-23'), y: 4343.39 },
    { x: new Date('2025-07-24'), y: 4338.88 },
    { x: new Date('2025-07-25'), y: 4342.24 },
    { x: new Date('2025-07-26'), y: 4356.54 },
    { x: new Date('2025-07-27'), y: 4355.57 },
    { x: new Date('2025-07-29'), y: 4366.10 },
    { x: new Date('2025-07-30'), y: 4371.30 },
    { x: new Date('2025-07-31'), y: 4381.29 },
    { x: new Date('2025-08-01'), y: 4395.69 },
    { x: new Date('2025-08-02'), y: 4384.41 },
    { x: new Date('2025-08-03'), y: 4388.07 },
    { x: new Date('2025-08-04'), y: 4383.76 },
    { x: new Date('2025-08-05'), y: 4369.74 },
    { x: new Date('2025-08-06'), y: 4370.55 },
    { x: new Date('2025-08-07'), y: 4362.89 },
    { x: new Date('2025-08-08'), y: 4351.93 },
    { x: new Date('2025-08-09'), y: 4347.18 },
    { x: new Date('2025-08-10'), y: 4345.92 },
    { x: new Date('2025-08-11'), y: 4341.72 },
    { x: new Date('2025-08-12'), y: 4341.79 },
    { x: new Date('2025-08-13'), y: 4338.03 },
    { x: new Date('2025-08-14'), y: 4304.60 },
    { x: new Date('2025-08-15'), y: 4302.94 },
    { x: new Date('2025-08-16'), y: 4309.81 },
    { x: new Date('2025-08-18'), y: 4316.23 },
    { x: new Date('2025-08-19'), y: 4323.02 },
    { x: new Date('2025-08-20'), y: 4338.76 },
    { x: new Date('2025-08-21'), y: 4343.44 },
    { x: new Date('2025-08-22'), y: 4353.36 },
    { x: new Date('2025-08-23'), y: 4346.51 },
    { x: new Date('2025-08-24'), y: 4345.58 },
    { x: new Date('2025-08-25'), y: 4345.56 },
    { x: new Date('2025-08-26'), y: 4337.15 },
    { x: new Date('2025-08-27'), y: 4346.74 },
    { x: new Date('2025-08-28'), y: 4371.88 },
    { x: new Date('2025-08-29'), y: 4360.22 },
    { x: new Date('2025-08-30'), y: 4395.92 }];

const options = {
    chart: {
        type: 'area',
        height: 300,
        toolbar: { show: false },
        zoom: { enabled: false }
    },
    series: [{ name: '', data: fullData }],
    xaxis: {
        type: 'datetime'
    },
    yaxis: {
        tickAmount: 7,
        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 filtered = fullData.filter(item => item.x >= start && item.x <= latestDate);
    chart.updateSeries([{ name: '', data: filtered }]);
}

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);