"use client";
import React, { Component, useEffect, useState } from "react";
import ReactApexChart from "react-apexcharts";
import dummyData from "../../../../const/dummy.json";
import { getStatisticMonthly } from "@/services/article";

type WeekData = {
  week: number;
  days: number[];
  total: number;
};

type RemainingDays = {
  days: number[];
  total: number;
};

function processMonthlyData(count: number[]): {
  weeks: WeekData[];
  remaining_days: RemainingDays;
} {
  const weeks: WeekData[] = [];
  let weekIndex = 1;

  for (let i = 0; i < count.length; i += 7) {
    const weekData = count.slice(i, i + 7);
    weeks.push({
      week: weekIndex,
      days: weekData,
      total: weekData.reduce((sum, day) => sum + day, 0),
    });
    weekIndex++;
  }

  const remainingDays: RemainingDays = {
    days: count.length % 7 === 0 ? [] : count.slice(-count.length % 7),
    total: count.slice(-count.length % 7).reduce((sum, day) => sum + day, 0),
  };

  return {
    weeks,
    remaining_days: remainingDays,
  };
}

function getRangeAcrossMonths(
  data: any[],
  startMonth: number,
  startDay: number,
  endMonth: number,
  endDay: number
) {
  const view: number[] = [];
  const comment: number[] = [];
  const share: number[] = [];
  const labels: string[] = [];

  const sortedData = data.sort((a, b) => a.month - b.month);
  for (const monthData of sortedData) {
    const { month, view: v, comment: c, share: s } = monthData;

    if (month < startMonth || month > endMonth) continue;

    let startIndex = 0;
    let endIndex = v.length - 1;

    if (month === startMonth) startIndex = startDay - 1;
    if (month === endMonth) endIndex = endDay - 1;

    for (let i = startIndex; i <= endIndex; i++) {
      view.push(v[i]);
      comment.push(c[i]);
      share.push(s[i]);

      const label = `${(i + 1).toString().padStart(2, "0")} - ${month
        .toString()
        .padStart(2, "0")}`;
      labels.push(label);
    }
  }

  return { view, comment, share, labels };
}

const ApexChartColumn = (props: {
  type: string;
  date: string;
  view: string[];
  range: { start: any; end: any };
}) => {
  const { date, type, view, range } = props;
  const [categories, setCategories] = useState<string[]>([]);
  const [series, setSeries] = useState<{ name: string; data: number[] }[]>([]);
  const [seriesComment, setSeriesComment] = useState<number[]>([]);
  const [seriesView, setSeriesView] = useState<number[]>([]);
  const [seriesShare, setSeriesShare] = useState<number[]>([]);
  const [years, setYear] = useState("");
  const [datas, setDatas] = useState<any>([]);
  const [totalChart, setTotalChart] = useState({
    views: 0,
    comment: 0,
    share: 0,
  });

  useEffect(() => {
    initFetch();
  }, [date, type, view, range]);

  const counting = (data: number[]) => {
    const total = data.reduce((a: number, b: number) => a + b, 0);
    return total;
  };

  const initFetch = async () => {
    const splitDate = date.split(" ");
    const splitDateDaily = String(range.start.year);
    let data = [];

    if (
      (type === "monthly" && splitDate[1] === years) ||
      (type === "daily" && splitDateDaily === years)
    ) {
      data = datas;
    } else {
      const res = await getStatisticMonthly(
        type === "monthly" ? splitDate[1] : splitDateDaily
      );
      data = res?.data?.data;
      setDatas(data);
    }
    const getDatas = data?.find(
      (a: any) =>
        a.month == Number(splitDate[0]) && a.year === Number(splitDate[1])
    );
    if (getDatas) {
      const temp1 = processMonthlyData(getDatas?.comment);
      const temp2 = processMonthlyData(getDatas?.view);
      const temp3 = processMonthlyData(getDatas?.share);

      if (type == "weekly") {
        setSeriesComment(
          temp1.weeks.map((list) => {
            return list.total;
          })
        );
        setSeriesView(
          temp2.weeks.map((list) => {
            return list.total;
          })
        );
        setSeriesShare(
          temp3.weeks.map((list) => {
            return list.total;
          })
        );
      } else {
        setSeriesComment(getDatas.comment);
        setSeriesView(getDatas.view);
        setSeriesShare(getDatas.share);

        const totalChartNow = {
          views: counting(getDatas.view),
          share: counting(getDatas.share),
          comment: counting(getDatas.comment),
        };
        setTotalChart(totalChartNow);
      }
      if (type === "daily") {
        const mappedData = getRangeAcrossMonths(
          data,
          range.start.month,
          range.start.day,
          range.end.month,
          range.end.day
        );

        setSeriesComment(mappedData.comment);
        setSeriesView(mappedData.view);
        setSeriesShare(mappedData.share);
        setCategories(mappedData.labels);
        const totalChartNow = {
          views: counting(mappedData.view),
          share: counting(mappedData.share),
          comment: counting(mappedData.comment),
        };
        setTotalChart(totalChartNow);
      }
      // if (type === "weekly") {
      //   const category = [];
      //   for (let i = 1; i <= temp1.weeks.length; i++) {
      //     category.push(`Week ${i}`);
      //   }
      //   setCategories(category);
      // }
    } else {
      setSeriesComment([]);
    }

    setYear(type === "monthly" ? splitDate[1] : splitDateDaily);
  };

  useEffect(() => {
    const temp = [
      {
        name: "Comment",
        data: view.includes("comment") ? seriesComment : [],
      },
      {
        name: "View",
        data: view.includes("view") ? seriesView : [],
      },
      {
        name: "Share",
        data: view.includes("share") ? seriesShare : [],
      },
    ];

    setSeries(temp);
  }, [view, seriesShare, seriesView, seriesComment]);

  return (
    <div className="h-full flex flex-col">
      <div id="chart" className="h-full">
        <ReactApexChart
          options={{
            chart: {
              height: "100%",
              type: "area",
            },
            stroke: {
              curve: "smooth",
            },
            dataLabels: {
              enabled: false,
            },
            xaxis: {
              categories: type == "daily" ? categories : [],
            },
          }}
          series={series}
          type="area"
          height="100%"
        />
      </div>
      <div id="html-dist"></div>
      <div className="flex flex-row gap-2 mt-5 border-1 p-5 rounded-lg">
        <div className="w-1/5 text-center">Chart Total</div>
        <div className="w-4/5 text-center">
          {totalChart.views} {totalChart.views > 1 ? "Views" : "View"}{" "}
          {totalChart.comment} {totalChart.comment > 1 ? "Comments" : "Comment"}{" "}
          {totalChart.share} {totalChart.share > 1 ? "Shares" : "Share"}{" "}
        </div>
      </div>{" "}
    </div>
  );
};

export default ApexChartColumn;