const fullData = [
    { x: new Date('2024-02-02'), y: 2006 },
    { x: new Date('2024-02-05'), y: 2011 },
    { x: new Date('2024-02-06'), y: 2012 },
    { x: new Date('2024-02-07'), y: 2005 },
    { x: new Date('2024-02-08'), y: 2001 },
    { x: new Date('2024-02-09'), y: 2002 },
    { x: new Date('2024-02-10'), y: 1996 },
    { x: new Date('2024-02-12'), y: 1996 },
    { x: new Date('2024-02-13'), y: 1992 },
    { x: new Date('2024-02-14'), y: 2004 },
    { x: new Date('2024-05-20'), y: 2047 },
    { x: new Date('2024-08-01'), y: 2078 },
    { x: new Date('2024-08-02'), y: 2078 },
    { x: new Date('2024-08-05'), y: 2077 },
    { x: new Date('2024-08-06'), y: 2077 },
    { x: new Date('2024-08-07'), y: 2057 },
    { x: new Date('2024-08-28'), y: 1986 },
    { x: new Date('2024-08-29'), y: 1974 },
    { x: new Date('2024-08-30'), y: 1986 },
    { x: new Date('2024-09-02'), y: 1993 },
    { x: new Date('2024-09-03'), y: 1997 },
    { x: new Date('2024-09-04'), y: 1985 },
    { x: new Date('2024-09-05'), y: 1976 },
    { x: new Date('2024-09-05'), y: 1977 },
    { x: new Date('2024-09-06'), y: 1970 },
    { x: new Date('2024-09-07'), y: 1982 },
    { x: new Date('2024-09-08'), y: 1982 },
    { x: new Date('2024-09-09'), y: 1979 },
    { x: new Date('2024-09-10'), y: 1979 },
    { x: new Date('2024-09-19'), y: 1972 },
    { x: new Date('2024-09-20'), y: 1938 },
    { x: new Date('2024-09-23'), y: 1945 },
    { x: new Date('2024-09-24'), y: 1950 },
    { x: new Date('2024-09-25'), y: 1936 },
    { x: new Date('2024-09-26'), y: 1952 },
    { x: new Date('2024-09-27'), y: 1947 },
    { x: new Date('2024-10-01'), y: 1955 },
    { x: new Date('2024-10-02'), y: 1959 },
    { x: new Date('2024-10-03'), y: 1984 },
    { x: new Date('2024-10-04'), y: 1994 },
    { x: new Date('2024-10-05'), y: 2017 },
    { x: new Date('2024-10-07'), y: 2017 },
    { x: new Date('2024-10-08'), y: 2021 },
    { x: new Date('2024-10-10'), y: 2023 },
    { x: new Date('2024-10-11'), y: 2016 },
    { x: new Date('2024-10-12'), y: 2004 },
    { x: new Date('2024-10-14'), y: 2002 },
    { x: new Date('2024-10-15'), y: 2005 },
    { x: new Date('2024-10-16'), y: 2003 },
    { x: new Date('2024-10-17'), y: 2001 },
    { x: new Date('2024-10-18'), y: 1997 },
    { x: new Date('2024-10-19'), y: 1991 },
    { x: new Date('2024-10-20'), y: 1991 },
    { x: new Date('2024-10-21'), y: 1991 },
    { x: new Date('2024-10-22'), y: 2001 },
    { x: new Date('2024-10-23'), y: 2006 },
    { x: new Date('2024-10-24'), y: 2014 },
    { x: new Date('2024-10-25'), y: 2012 },
    { x: new Date('2024-10-26'), y: 2021 },
    { x: new Date('2024-10-27'), y: 2021 },
    { x: new Date('2024-10-28'), y: 2012 },
    { x: new Date('2024-10-29'), y: 2026 },
    { x: new Date('2024-10-30'), y: 2026 },
    { x: new Date('2024-10-31'), y: 2018 },
    { x: new Date('2024-11-01'), y: 2022 },
    { x: new Date('2024-11-02'), y: 2036 },
    { x: new Date('2024-11-03'), y: 2036 },
    { x: new Date('2024-11-04'), y: 2036 },
    { x: new Date('2024-11-05'), y: 2028 },
    { x: new Date('2024-11-06'), y: 2022 },
    { x: new Date('2024-11-07'), y: 2035 },
    { x: new Date('2024-11-08'), y: 2003 },
    { x: new Date('2024-11-09'), y: 2012 },
    { x: new Date('2024-11-10'), y: 2012 },
    { x: new Date('2024-11-11'), y: 2015 },
    { x: new Date('2024-11-12'), y: 2028 },
    { x: new Date('2024-11-13'), y: 2034 },
    { x: new Date('2024-11-14'), y: 2032 },
    { x: new Date('2024-11-15'), y: 2053 },
    { x: new Date('2024-11-16'), y: 2042 },
    { x: new Date('2024-11-17'), y: 2042 },
    { x: new Date('2024-11-18'), y: 2036 },
    { x: new Date('2024-11-19'), y: 2036 },
    { x: new Date('2024-11-21'), y: 2048 },
    { x: new Date('2024-11-22'), y: 2045 },
    { x: new Date('2024-11-23'), y: 2046 },
    { x: new Date('2024-11-24'), y: 2046 },
    { x: new Date('2024-11-26'), y: 2040 },
    { x: new Date('2024-11-27'), y: 2046 },
    { x: new Date('2024-11-28'), y: 2037 },
    { x: new Date('2024-11-29'), y: 2036 },
    { x: new Date('2024-12-01'), y: 2034 },
    { x: new Date('2024-12-02'), y: 2034 },
    { x: new Date('2024-12-03'), y: 2048 },
    { x: new Date('2024-12-04'), y: 2048 },
    { x: new Date('2024-12-06'), y: 2036 },
    { x: new Date('2024-12-07'), y: 2039 },
    { x: new Date('2024-12-08'), y: 2039 },
    { x: new Date('2024-12-09'), y: 2039 },
    { x: new Date('2024-12-10'), y: 2039 },
    { x: new Date('2024-12-11'), y: 2047 },
    { x: new Date('2024-12-12'), y: 2051 },
    { x: new Date('2024-12-13'), y: 2051 },
    { x: new Date('2024-12-14'), y: 2061 },
    { x: new Date('2024-12-15'), y: 2061 },
    { x: new Date('2024-12-16'), y: 2061 },
    { x: new Date('2024-12-17'), y: 2062 },
    { x: new Date('2024-12-18'), y: 2070 },
    { x: new Date('2024-12-19'), y: 2093 },
    { x: new Date('2024-12-20'), y: 2103 },
    { x: new Date('2024-12-22'), y: 2079 },
    { x: new Date('2024-12-23'), y: 2079 },
    { x: new Date('2024-12-24'), y: 2089 },
    { x: new Date('2024-12-25'), y: 2087 },
    { x: new Date('2024-12-27'), y: 2089 },
    { x: new Date('2024-12-30'), y: 2091 },
    { x: new Date('2024-12-31'), y: 2078 },
    { x: new Date('2025-01-02'), y: 2089 },
    { x: new Date('2025-01-03'), y: 2088 },
    { x: new Date('2025-01-04'), y: 2082 },
    { x: new Date('2025-01-06'), y: 2082 },
    { x: new Date('2025-01-15'), y: 2093 },
    { x: new Date('2025-01-16'), y: 2104 },
    { x: new Date('2025-01-17'), y: 2107 },
    { x: new Date('2025-01-19'), y: 2104 },
    { x: new Date('2025-01-20'), y: 2102 },
    { x: new Date('2025-01-21'), y: 2095 },
    { x: new Date('2025-01-22'), y: 2096 },
    { x: new Date('2025-01-23'), y: 2090 },
    { x: new Date('2025-01-24'), y: 2084 },
    { x: new Date('2025-01-25'), y: 2076 },
    { x: new Date('2025-01-26'), y: 2076 },
    { x: new Date('2025-01-27'), y: 2076 },
    { x: new Date('2025-01-28'), y: 2082 },
    { x: new Date('2025-01-29'), y: 2080 },
    { x: new Date('2025-01-31'), y: 2089 },
    { x: new Date('2025-02-01'), y: 2098 },
    { x: new Date('2025-02-03'), y: 2098 },
    { x: new Date('2025-02-04'), y: 2095 },
    { x: new Date('2025-02-06'), y: 2089 },
    { x: new Date('2025-02-07'), y: 2095 },
    { x: new Date('2025-02-08'), y: 2089 },
    { x: new Date('2025-02-09'), y: 2089 },
    { x: new Date('2025-02-10'), y: 2087 },
    { x: new Date('2025-02-11'), y: 2087 },
    { x: new Date('2025-02-12'), y: 2095 },
    { x: new Date('2025-02-13'), y: 2103 },
    { x: new Date('2025-02-14'), y: 2101 },
    { x: new Date('2025-02-17'), y: 2087 },
    { x: new Date('2025-02-18'), y: 2084 },
    { x: new Date('2025-02-19'), y: 2095 },
    { x: new Date('2025-02-20'), y: 2101 },
    { x: new Date('2025-02-24'), y: 2099 },
    { x: new Date('2025-02-25'), y: 2093 },
    { x: new Date('2025-02-26'), y: 2105 },
    { x: new Date('2025-02-27'), y: 2102 },
    { x: new Date('2025-02-28'), y: 2113 },
    { x: new Date('2025-03-01'), y: 2131 },
    { x: new Date('2025-03-02'), y: 2130 },
    { x: new Date('2025-03-03'), y: 2129 },
    { x: new Date('2025-03-04'), y: 2114 },
    { x: new Date('2025-03-06'), y: 2101 },
    { x: new Date('2025-03-07'), y: 2096 },
    { x: new Date('2025-03-08'), y: 2097 },
    { x: new Date('2025-03-10'), y: 2094 },
    { x: new Date('2025-03-11'), y: 2106 },
    { x: new Date('2025-03-12'), y: 2112.88 },
    { x: new Date('2025-03-13'), y: 2113.60 },
    { x: new Date('2025-03-14'), y: 2111.34 },
    { x: new Date('2025-03-15'), y: 2103.54 },
    { x: new Date('2025-03-16'), y: 2103.67 },
    { x: new Date('2025-03-17'), y: 2103.67 },
    { x: new Date('2025-03-18'), y: 2104.41 },
    { x: new Date('2025-03-19'), y: 2117.72 },
    { x: new Date('2025-03-20'), y: 2124.61 },
    { x: new Date('2025-03-21'), y: 2121.86 },
    { x: new Date('2025-03-22'), y: 2122.70 },
    { x: new Date('2025-03-23'), y: 2122.81 },
    { x: new Date('2025-03-24'), y: 2122.60 },
    { x: new Date('2025-03-25'), y: 2122.60 },
    { x: new Date('2025-03-26'), y: 2135.04 },
    { x: new Date('2025-03-27'), y: 2133.77 },
    { x: new Date('2025-03-28'), y: 2133.31 },
    { x: new Date('2025-03-30'), y: 2132.93 },
    { x: new Date('2025-03-31'), y: 2130.58 },
    { x: new Date('2025-04-01'), y: 2129.40 },
    { x: new Date('2025-04-02'), y: 2130.06 },
    { x: new Date('2025-04-03'), y: 2135.47 },
    { x: new Date('2025-04-04'), y: 2132.83 },
    { x: new Date('2025-04-05'), y: 2127.00 },
    { x: new Date('2025-04-06'), y: 2127.97 },
    { x: new Date('2025-04-07'), y: 2121.76 },
    { x: new Date('2025-04-08'), y: 2127.30 },
    { x: new Date('2025-04-09'), y: 2173.54 },
    { x: new Date('2025-04-10'), y: 2174.97 },
    { x: new Date('2025-04-11'), y: 2169.89 },
    { x: new Date('2025-04-12'), y: 2164.02 },
    { x: new Date('2025-04-13'), y: 2165.50 },
    { x: new Date('2025-04-14'), y: 2165.78 },
    { x: new Date('2025-04-15'), y: 2161.91 },
    { x: new Date('2025-04-16'), y: 2165.18 },
    { x: new Date('2025-04-17'), y: 2163.97 },
    { x: new Date('2025-04-18'), y: 2171.35 },
    { x: new Date('2025-04-19'), y: 2169.84 },
    { x: new Date('2025-04-20'), y: 2170.10 },
    { x: new Date('2025-04-21'), y: 2169.36 },
    { x: new Date('2025-04-22'), y: 2168.60 },
    { x: new Date('2025-04-23'), y: 2172.77 },
    { x: new Date('2025-04-24'), y: 2175.50 },
    { x: new Date('2025-04-26'), y: 2173.29 },
    { x: new Date('2025-04-27'), y: 2173.11 },
    { x: new Date('2025-04-28'), y: 2171.21 },
    { x: new Date('2025-05-02'), y: 2144.17 },
    { x: new Date('2025-05-05'), y: 2120.81 },
    { x: new Date('2025-05-06'), y: 2120.81 },
    { x: new Date('2025-05-08'), y: 2119.83 },
    { x: new Date('2025-05-09'), y: 2124.97 },
    { x: new Date('2025-05-10'), y: 2127.39 },
    { x: new Date('2025-05-11'), y: 2126.45 },
    { x: new Date('2025-05-12'), y: 2125.04 },
    { x: new Date('2025-05-13'), y: 2121.46 },
    { x: new Date('2025-05-14'), y: 2119.33 },
    { x: new Date('2025-05-15'), y: 2123.32 },
    { x: new Date('2025-05-16'), y: 2113.15 },
    { x: new Date('2025-05-17'), y: 2104.55 },
    { x: new Date('2025-05-19'), y: 2104.87 },
    { x: new Date('2025-05-20'), y: 2102.36 },
    { x: new Date('2025-05-21'), y: 2096.47 },
    { x: new Date('2025-05-22'), y: 2095.54 },
    { x: new Date('2025-05-24'), y: 2070.16 },
    { x: new Date('2025-05-26'), y: 2068.48 },
    { x: new Date('2025-05-27'), y: 2068.67 },
    { x: new Date('2025-06-04'), y: 2079.18 },
    { x: new Date('2025-06-05'), y: 2076.22 },
    { x: new Date('2025-06-06'), y: 2073.42 },
    { x: new Date('2025-06-07'), y: 2076.10 },
    { x: new Date('2025-06-08'), y: 2076.03 },
    { x: new Date('2025-06-10'), y: 2074.55 },
    { x: new Date('2025-06-11'), y: 2073.11 },
    { x: new Date('2025-06-12'), y: 2072.34 },
    { x: new Date('2025-06-13'), y: 2066.55 },
    { x: new Date('2025-06-14'), y: 2080.50 },
    { x: new Date('2025-06-15'), y: 2079.34 },
    { x: new Date('2025-06-16'), y: 2076.72 },
    { x: new Date('2025-06-17'), y: 2075.39 },
    { x: new Date('2025-06-18'), y: 2070.78 },
    { x: new Date('2025-06-20'), y: 2085.03 },
    { x: new Date('2025-06-21'), y: 2086.25 },
    { x: new Date('2025-06-22'), y: 2086.74 },
    { x: new Date('2025-06-23'), y: 2088.21 },
    { x: new Date('2025-06-24'), y: 2103.85 },
    { x: new Date('2025-06-25'), y: 2081.20 },
    { x: new Date('2025-06-26'), y: 2078.53 },
    { x: new Date('2025-06-27'), y: 2066.91 },
    { x: new Date('2025-06-28'), y: 2067.82 },
    { x: new Date('2025-06-29'), y: 2066.82 },
    { x: new Date('2025-06-30'), y: 2065.16 },
    { x: new Date('2025-07-01'), y: 2068.10 },
    { x: new Date('2025-07-02'), y: 2063.82 },
    { x: new Date('2025-07-04'), y: 2062.51 },
    { x: new Date('2025-07-05'), y: 2062.68 },
    { x: new Date('2025-07-06'), y: 2062.66 },
    { x: new Date('2025-07-07'), y: 2061.83 },
    { x: new Date('2025-07-08'), y: 2069.12 },
    { x: new Date('2025-07-09'), y: 2069.52 },
    { x: new Date('2025-07-10'), y: 2071.61 },
    { x: new Date('2025-07-12'), y: 2068.63 },
    { x: new Date('2025-07-13'), y: 2067.59 },
    { x: new Date('2025-07-14'), y: 2067.60 },
    { x: new Date('2025-07-16'), y: 2073.86 },
    { x: new Date('2025-07-17'), y: 2076.12 },
    { x: new Date('2025-07-19'), y: 2077.77 },
    { x: new Date('2025-07-20'), y: 2077.33 },
    { x: new Date('2025-07-21'), y: 2075.94 },
    { x: new Date('2025-07-22'), y: 2077.65 },
    { x: new Date('2025-07-23'), y: 2074.89 },
    { x: new Date('2025-07-24'), y: 2072.00 },
    { x: new Date('2025-07-25'), y: 2072.73 },
    { x: new Date('2025-07-26'), y: 2078.87 },
    { x: new Date('2025-07-27'), y: 2079.04 },
    { x: new Date('2025-07-29'), y: 2082.37 },
    { x: new Date('2025-07-30'), y: 2089.17 },
    { x: new Date('2025-07-31'), y: 2090.53 },
    { x: new Date('2025-08-01'), y: 2099.14 },
    { x: new Date('2025-08-02'), y: 2098.47 },
    { x: new Date('2025-08-03'), y: 2099.58 },
    { x: new Date('2025-08-04'), y: 2100.58 },
    { x: new Date('2025-08-05'), y: 2086.83 },
    { x: new Date('2025-08-06'), y: 2088.17 },
    { x: new Date('2025-08-07'), y: 2084.16 },
    { x: new Date('2025-08-08'), y: 2079.30 },
    { x: new Date('2025-08-09'), y: 2078.61 },
    { x: new Date('2025-08-10'), y: 2077.20 },
    { x: new Date('2025-08-11'), y: 2074.13 },
    { x: new Date('2025-08-12'), y: 2071.54 },
    { x: new Date('2025-08-13'), y: 2072.29 },
    { x: new Date('2025-08-14'), y: 2059.16 },
    { x: new Date('2025-08-15'), y: 2050.88 },
    { x: new Date('2025-08-16'), y: 2060.12 },
    { x: new Date('2025-08-18'), y: 2064.82 },
    { x: new Date('2025-08-19'), y: 2071.70 },
    { x: new Date('2025-08-20'), y: 2084.88 },
    { x: new Date('2025-08-21'), y: 2084.55 },
    { x: new Date('2025-08-22'), y: 2088.22 },
    { x: new Date('2025-08-23'), y: 2089.59 },
    { x: new Date('2025-08-24'), y: 2090.23 },
    { x: new Date('2025-08-25'), y: 2091.75 },
    { x: new Date('2025-08-26'), y: 2081.36 },
    { x: new Date('2025-08-27'), y: 2090.24 },
    { x: new Date('2025-08-28'), y: 2107.33 },
    { x: new Date('2025-08-29'), y: 2097.34 },
    { x: new Date('2025-08-30'), y: 2117.61 },
    { x: new Date('2025-08-31'), y: 2116.30 }];

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);