const fullData = [
    { x: new Date('2024-02-02'), y: 2217 },
    { x: new Date('2024-02-05'), y: 2187 },
    { x: new Date('2024-02-06'), y: 2213 },
    { x: new Date('2024-02-07'), y: 2205 },
    { x: new Date('2024-02-08'), y: 2201 },
    { x: new Date('2024-02-09'), y: 2201 },
    { x: new Date('2024-02-10'), y: 2191 },
    { x: new Date('2024-02-12'), y: 2174 },
    { x: new Date('2024-02-13'), y: 2166 },
    { x: new Date('2024-02-14'), y: 2178 },
    { x: new Date('2024-05-20'), y: 2209 },
    { x: new Date('2024-08-01'), y: 2244 },
    { x: new Date('2024-08-02'), y: 2247 },
    { x: new Date('2024-08-05'), y: 2263 },
    { x: new Date('2024-08-06'), y: 2264 },
    { x: new Date('2024-08-07'), y: 2233 },
    { x: new Date('2024-08-28'), y: 2172 },
    { x: new Date('2024-08-29'), y: 2165 },
    { x: new Date('2024-08-30'), y: 2182 },
    { x: new Date('2024-09-02'), y: 2187 },
    { x: new Date('2024-09-03'), y: 2186 },
    { x: new Date('2024-09-04'), y: 2177 },
    { x: new Date('2024-09-05'), y: 2170 },
    { x: new Date('2024-09-05'), y: 2171 },
    { x: new Date('2024-09-06'), y: 2167 },
    { x: new Date('2024-09-07'), y: 2180 },
    { x: new Date('2024-09-08'), y: 2180 },
    { x: new Date('2024-09-09'), y: 2170 },
    { x: new Date('2024-09-10'), y: 2167 },
    { x: new Date('2024-09-19'), y: 2169 },
    { x: new Date('2024-09-20'), y: 2139 },
    { x: new Date('2024-09-23'), y: 2149 },
    { x: new Date('2024-09-24'), y: 2152 },
    { x: new Date('2024-09-25'), y: 2149 },
    { x: new Date('2024-09-26'), y: 2161 },
    { x: new Date('2024-09-27'), y: 2160 },
    { x: new Date('2024-10-01'), y: 2164 },
    { x: new Date('2024-10-02'), y: 2166 },
    { x: new Date('2024-10-03'), y: 2186 },
    { x: new Date('2024-10-04'), y: 2196 },
    { x: new Date('2024-10-05'), y: 2232 },
    { x: new Date('2024-10-07'), y: 2232 },
    { x: new Date('2024-10-08'), y: 2216 },
    { x: new Date('2024-10-10'), y: 2218 },
    { x: new Date('2024-10-11'), y: 2212 },
    { x: new Date('2024-10-12'), y: 2203 },
    { x: new Date('2024-10-14'), y: 2203 },
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    { x: new Date('2024-10-16'), y: 2186 },
    { x: new Date('2024-10-17'), y: 2186 },
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    { x: new Date('2024-10-22'), y: 2184 },
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    { x: new Date('2024-10-30'), y: 2208 },
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    { x: new Date('2024-11-01'), y: 2208 },
    { x: new Date('2024-11-02'), y: 2225 },
    { x: new Date('2024-11-03'), y: 2225 },
    { x: new Date('2024-11-04'), y: 2225 },
    { x: new Date('2024-11-05'), y: 2220 },
    { x: new Date('2024-11-06'), y: 2215 },
    { x: new Date('2024-11-07'), y: 2205 },
    { x: new Date('2024-11-08'), y: 2179 },
    { x: new Date('2024-11-09'), y: 2179 },
    { x: new Date('2024-11-10'), y: 2179 },
    { x: new Date('2024-11-11'), y: 2182 },
    { x: new Date('2024-11-12'), y: 2186 },
    { x: new Date('2024-11-13'), y: 2188 },
    { x: new Date('2024-11-14'), y: 2189 },
    { x: new Date('2024-11-15'), y: 2209 },
    { x: new Date('2024-11-16'), y: 2198 },
    { x: new Date('2024-11-17'), y: 2198 },
    { x: new Date('2024-11-18'), y: 2192 },
    { x: new Date('2024-11-19'), y: 2190 },
    { x: new Date('2024-11-21'), y: 2198 },
    { x: new Date('2024-11-22'), y: 2201 },
    { x: new Date('2024-11-23'), y: 2199 },
    { x: new Date('2024-11-24'), y: 2199 },
    { x: new Date('2024-11-26'), y: 2193 },
    { x: new Date('2024-11-27'), y: 2195 },
    { x: new Date('2024-11-28'), y: 2189 },
    { x: new Date('2024-11-29'), y: 2188 },
    { x: new Date('2024-12-01'), y: 2186 },
    { x: new Date('2024-12-02'), y: 2186 },
    { x: new Date('2024-12-03'), y: 2187 },
    { x: new Date('2024-12-04'), y: 2193 },
    { x: new Date('2024-12-06'), y: 2183 },
    { x: new Date('2024-12-07'), y: 2182 },
    { x: new Date('2024-12-08'), y: 2182 },
    { x: new Date('2024-12-09'), y: 2182 },
    { x: new Date('2024-12-10'), y: 2183 },
    { x: new Date('2024-12-11'), y: 2195 },
    { x: new Date('2024-12-12'), y: 2196 },
    { x: new Date('2024-12-13'), y: 2194 },
    { x: new Date('2024-12-14'), y: 2202 },
    { x: new Date('2024-12-15'), y: 2202 },
    { x: new Date('2024-12-16'), y: 2203 },
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    { x: new Date('2024-12-18'), y: 2207 },
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    { x: new Date('2024-12-20'), y: 2237 },
    { x: new Date('2024-12-22'), y: 2217 },
    { x: new Date('2024-12-23'), y: 2217 },
    { x: new Date('2024-12-24'), y: 2224 },
    { x: new Date('2024-12-25'), y: 2221 },
    { x: new Date('2024-12-27'), y: 2223 },
    { x: new Date('2024-12-30'), y: 2224 },
    { x: new Date('2024-12-31'), y: 2211 },
    { x: new Date('2025-01-02'), y: 2225 },
    { x: new Date('2025-01-03'), y: 2225 },
    { x: new Date('2025-01-04'), y: 2212 },
    { x: new Date('2025-01-06'), y: 2212 },
    { x: new Date('2025-01-15'), y: 2223 },
    { x: new Date('2025-01-16'), y: 2234 },
    { x: new Date('2025-01-17'), y: 2239 },
    { x: new Date('2025-01-19'), y: 2236 },
    { x: new Date('2025-01-20'), y: 2234 },
    { x: new Date('2025-01-21'), y: 2229 },
    { x: new Date('2025-01-22'), y: 2244 },
    { x: new Date('2025-01-23'), y: 2238 },
    { x: new Date('2025-01-24'), y: 2228 },
    { x: new Date('2025-01-25'), y: 2232 },
    { x: new Date('2025-01-26'), y: 2232 },
    { x: new Date('2025-01-27'), y: 2232 },
    { x: new Date('2025-01-28'), y: 2236 },
    { x: new Date('2025-01-29'), y: 2235 },
    { x: new Date('2025-01-31'), y: 2266 },
    { x: new Date('2025-02-01'), y: 2275 },
    { x: new Date('2025-02-03'), y: 2272 },
    { x: new Date('2025-02-04'), y: 2269 },
    { x: new Date('2025-02-06'), y: 2236 },
    { x: new Date('2025-02-07'), y: 2238 },
    { x: new Date('2025-02-08'), y: 2232 },
    { x: new Date('2025-02-09'), y: 2232 },
    { x: new Date('2025-02-10'), y: 2226 },
    { x: new Date('2025-02-11'), y: 2226 },
    { x: new Date('2025-02-12'), y: 2233 },
    { x: new Date('2025-02-13'), y: 2241 },
    { x: new Date('2025-02-14'), y: 2245 },
    { x: new Date('2025-02-17'), y: 2238 },
    { x: new Date('2025-02-18'), y: 2233 },
    { x: new Date('2025-02-19'), y: 2239 },
    { x: new Date('2025-02-20'), y: 2244 },
    { x: new Date('2025-02-24'), y: 2248 },
    { x: new Date('2025-02-25'), y: 2244 },
    { x: new Date('2025-02-26'), y: 2252 },
    { x: new Date('2025-02-27'), y: 2249 },
    { x: new Date('2025-02-28'), y: 2254 },
    { x: new Date('2025-03-01'), y: 2275 },
    { x: new Date('2025-03-02'), y: 2275 },
    { x: new Date('2025-03-03'), y: 2274 },
    { x: new Date('2025-03-04'), y: 2255 },
    { x: new Date('2025-03-06'), y: 2252 },
    { x: new Date('2025-03-07'), y: 2250 },
    { x: new Date('2025-03-08'), y: 2252 },
    { x: new Date('2025-03-10'), y: 2248 },
    { x: new Date('2025-03-11'), y: 2253 },
    { x: new Date('2025-03-12'), y: 2270.58 },
    { x: new Date('2025-03-13'), y: 2267.87 },
    { x: new Date('2025-03-14'), y: 2264.51 },
    { x: new Date('2025-03-15'), y: 2259.30 },
    { x: new Date('2025-03-16'), y: 2259.49 },
    { x: new Date('2025-03-17'), y: 2259.49 },
    { x: new Date('2025-03-18'), y: 2261.25 },
    { x: new Date('2025-03-19'), y: 2276.54 },
    { x: new Date('2025-03-20'), y: 2282.97 },
    { x: new Date('2025-03-21'), y: 2275.45 },
    { x: new Date('2025-03-22'), y: 2275.23 },
    { x: new Date('2025-03-23'), y: 2275.43 },
    { x: new Date('2025-03-24'), y: 2275.84 },
    { x: new Date('2025-03-25'), y: 2275.84 },
    { x: new Date('2025-03-26'), y: 2286.17 },
    { x: new Date('2025-03-27'), y: 2282.02 },
    { x: new Date('2025-03-28'), y: 2282.13 },
    { x: new Date('2025-03-30'), y: 2283.84 },
    { x: new Date('2025-03-31'), y: 2279.41 },
    { x: new Date('2025-04-01'), y: 2282.27 },
    { x: new Date('2025-04-02'), y: 2272.96 },
    { x: new Date('2025-04-03'), y: 2278.50 },
    { x: new Date('2025-04-04'), y: 2272.95 },
    { x: new Date('2025-04-05'), y: 2271.67 },
    { x: new Date('2025-04-06'), y: 2272.18 },
    { x: new Date('2025-04-07'), y: 2264.64 },
    { x: new Date('2025-04-08'), y: 2258.18 },
    { x: new Date('2025-04-09'), y: 2294.85 },
    { x: new Date('2025-04-10'), y: 2294.57 },
    { x: new Date('2025-04-11'), y: 2300.89 },
    { x: new Date('2025-04-12'), y: 2300.82 },
    { x: new Date('2025-04-13'), y: 2301.51 },
    { x: new Date('2025-04-14'), y: 2304.26 },
    { x: new Date('2025-04-15'), y: 2292.90 },
    { x: new Date('2025-04-16'), y: 2297.93 },
    { x: new Date('2025-04-17'), y: 2298.65 },
    { x: new Date('2025-04-18'), y: 2309.04 },
    { x: new Date('2025-04-19'), y: 2306.77 },
    { x: new Date('2025-04-20'), y: 2307.09 },
    { x: new Date('2025-04-21'), y: 2306.88 },
    { x: new Date('2025-04-22'), y: 2307.46 },
    { x: new Date('2025-04-23'), y: 2306.07 },
    { x: new Date('2025-04-24'), y: 2315.92 },
    { x: new Date('2025-04-26'), y: 2313.46 },
    { x: new Date('2025-04-27'), y: 2313.20 },
    { x: new Date('2025-04-28'), y: 2309.94 },
    { x: new Date('2025-05-02'), y: 2286.76 },
    { x: new Date('2025-05-05'), y: 2263.47 },
    { x: new Date('2025-05-06'), y: 2263.47 },
    { x: new Date('2025-05-08'), y: 2278.98 },
    { x: new Date('2025-05-09'), y: 2281.84 },
    { x: new Date('2025-05-10'), y: 2285.06 },
    { x: new Date('2025-05-11'), y: 2283.90 },
    { x: new Date('2025-05-12'), y: 2285.84 },
    { x: new Date('2025-05-13'), y: 2295.12 },
    { x: new Date('2025-05-14'), y: 2292.93 },
    { x: new Date('2025-05-15'), y: 2299.29 },
    { x: new Date('2025-05-16'), y: 2288.40 },
    { x: new Date('2025-05-17'), y: 2281.31 },
    { x: new Date('2025-05-19'), y: 2281.91 },
    { x: new Date('2025-05-20'), y: 2279.35 },
    { x: new Date('2025-05-21'), y: 2273.62 },
    { x: new Date('2025-05-22'), y: 2277.67 },
    { x: new Date('2025-05-24'), y: 2258.24 },
    { x: new Date('2025-05-26'), y: 2256.80 },
    { x: new Date('2025-05-27'), y: 2253.90 },
    { x: new Date('2025-06-04'), y: 2268.92 },
    { x: new Date('2025-06-05'), y: 2268.09 },
    { x: new Date('2025-06-06'), y: 2266.52 },
    { x: new Date('2025-06-07'), y: 2266.34 },
    { x: new Date('2025-06-08'), y: 2266.64 },
    { x: new Date('2025-06-10'), y: 2266.52 },
    { x: new Date('2025-06-11'), y: 2264.65 },
    { x: new Date('2025-06-12'), y: 2261.88 },
    { x: new Date('2025-06-13'), y: 2260.99 },
    { x: new Date('2025-06-14'), y: 2273.18 },
    { x: new Date('2025-06-15'), y: 2271.97 },
    { x: new Date('2025-06-16'), y: 2268.47 },
    { x: new Date('2025-06-17'), y: 2268.48 },
    { x: new Date('2025-06-18'), y: 2261.78 },
    { x: new Date('2025-06-20'), y: 2277.35 },
    { x: new Date('2025-06-21'), y: 2280.66 },
    { x: new Date('2025-06-22'), y: 2281.30 },
    { x: new Date('2025-06-23'), y: 2282.49 },
    { x: new Date('2025-06-24'), y: 2299.68 },
    { x: new Date('2025-06-25'), y: 2278.22 },
    { x: new Date('2025-06-26'), y: 2274.54 },
    { x: new Date('2025-06-27'), y: 2263.70 },
    { x: new Date('2025-06-28'), y: 2263.66 },
    { x: new Date('2025-06-29'), y: 2262.68 },
    { x: new Date('2025-06-30'), y: 2260.99 },
    { x: new Date('2025-07-01'), y: 2266.61 },
    { x: new Date('2025-07-02'), y: 2261.78 },
    { x: new Date('2025-07-04'), y: 2259.34 },
    { x: new Date('2025-07-05'), y: 2260.08 },
    { x: new Date('2025-07-06'), y: 2260.03 },
    { x: new Date('2025-07-07'), y: 2259.11 },
    { x: new Date('2025-07-08'), y: 2263.54 },
    { x: new Date('2025-07-09'), y: 2263.56 },
    { x: new Date('2025-07-10'), y: 2264.68 },
    { x: new Date('2025-07-12'), y: 2264.84 },
    { x: new Date('2025-07-13'), y: 2263.62 },
    { x: new Date('2025-07-14'), y: 2263.64 },
    { x: new Date('2025-07-16'), y: 2268.13 },
    { x: new Date('2025-07-17'), y: 2269.93 },
    { x: new Date('2025-07-19'), y: 2271.48 },
    { x: new Date('2025-07-20'), y: 2271.13 },
    { x: new Date('2025-07-21'), y: 2269.69 },
    { x: new Date('2025-07-22'), y: 2273.25 },
    { x: new Date('2025-07-23'), y: 2270.25 },
    { x: new Date('2025-07-24'), y: 2272.25 },
    { x: new Date('2025-07-25'), y: 2274.25 },
    { x: new Date('2025-07-26'), y: 2276.81 },
    { x: new Date('2025-07-27'), y: 2276.99 },
    { x: new Date('2025-07-29'), y: 2277.51 },
    { x: new Date('2025-07-30'), y: 2284.78 },
    { x: new Date('2025-07-31'), y: 2281.14 },
    { x: new Date('2025-08-01'), y: 2288.38 },
    { x: new Date('2025-08-02'), y: 2285.61 },
    { x: new Date('2025-08-03'), y: 2286.73 },
    { x: new Date('2025-08-04'), y: 2291.16 },
    { x: new Date('2025-08-05'), y: 2282.19 },
    { x: new Date('2025-08-06'), y: 2280.86 },
    { x: new Date('2025-08-07'), y: 2277.26 },
    { x: new Date('2025-08-08'), y: 2273.32 },
    { x: new Date('2025-08-09'), y: 2270.67 },
    { x: new Date('2025-08-10'), y: 2269.29 },
    { x: new Date('2025-08-11'), y: 2265.27 },
    { x: new Date('2025-08-12'), y: 2262.23 },
    { x: new Date('2025-08-13'), y: 2263.61 },
    { x: new Date('2025-08-14'), y: 2251.97 },
    { x: new Date('2025-08-15'), y: 2241.52 },
    { x: new Date('2025-08-16'), y: 2245.16 },
    { x: new Date('2025-08-18'), y: 2248.56 },
    { x: new Date('2025-08-19'), y: 2251.34 },
    { x: new Date('2025-08-20'), y: 2264.05 },
    { x: new Date('2025-08-21'), y: 2268.65 },
    { x: new Date('2025-08-22'), y: 2272.37 },
    { x: new Date('2025-08-23'), y: 2276.53 },
    { x: new Date('2025-08-24'), y: 2277.03 },
    { x: new Date('2025-08-25'), y: 2279.20 },
    { x: new Date('2025-08-26'), y: 2272.19 },
    { x: new Date('2025-08-27'), y: 2277.39 },
    { x: new Date('2025-08-28'), y: 2292.34 },
    { x: new Date('2025-08-29'), y: 2293.29 },
    { x: new Date('2025-08-30'), y: 2315.41 },
    { x: new Date('2025-08-31'), y: 2313.75 }];

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);