import React, { useEffect, useState } from "react";
import {
  getReports,
  getAnalytics
} from "../helpers/transactionHelpers.js";
import CircularDiagram from "./CircularDiagram";
import styles from "./Transactions.module.css";
import "./Switch.css";

import MultiSwitch from "react-multi-switch-toggle";
import DailyCharts from '../components/DailyCharts.js';
import PeriodCharts from '../components/PeriodCharts.js';

const RoundedRectangle = ({
  onClick,
  title,
  value,
  percentage,
  invert,
  fontSize = "15px",
  loading = false,
  children, // Assuming this is a React component or JSX
  isChildren,
  width = 'calc(100% / 2 - 10px)'
}) => {
  const containerStyle = {
    display: "flex",
    flexDirection: "column",
    alignItems: "flex-start",
    justifyContent: "center",
    width: width,
    height: "auto",
    borderRadius: "15px",
    padding: "20px",
    margin: "5px",
    textAlign: "left",
    fontFamily: "Arial, sans-serif",
    boxSizing: "border-box",
    backgroundColor: loading ? "rgb(127 127 127)" : 'white',
    border: '1px solid #b3b1b1'
  };

  const titleStyle = {
    fontWeight: "bold",
    marginBottom: "10px",
    width: "100%",
    backgroundColor: loading
      ? "rgb(85 85 85)"
      : !isChildren && !children && "inherit",
    color: loading ? "transparent" : "inherit",
  };

  const valueAndPercentageContainerStyle = {
    display: "flex",
    flexDirection: "row",
    justifyContent: "space-between",
    alignItems: "center",
    width: "100%",
  };

  const valueStyle = {
    fontSize: loading ? "15px" : fontSize,
    fontWeight: "bold",
    flex: "1",
    textAlign: "left",
    color: loading ? "transparent" : "inherit",
    backgroundColor: loading ? "rgb(85 85 85)" : "transparent",
    overflow: "hidden",
    textOverflow: "ellipsis",
    whiteSpace: "nowrap",
  };

  const percentageStyle = {
    fontSize: "16px",
    display: "flex",
    alignItems: "center",
    textAlign: "right",
    color: loading ? "black" : percentage >= 0 ? (invert ? "red" : "#2fd45e") : (invert ? "#2fd45e" : "red"),
  };

  const arrowStyle = {
    marginLeft: "5px",
  };

  return (
    <div style={containerStyle} onClick={onClick}>
      <div style={titleStyle}>{title}</div>
      {!children && (
        <div style={valueAndPercentageContainerStyle}>
          <div style={valueStyle}>{loading ? "Loading..." : value}</div>
          <div style={percentageStyle}>
            {loading ? "" : percentage}
            {percentage !== undefined && !loading && "%"}
            {percentage !== undefined && !loading && (
              <span style={arrowStyle}>
                {percentage > 0 ? "↗" : percentage === 0 ? "-" : "↘"}
              </span>
            )}
          </div>
        </div>
      )}
      {children && <div>{children}</div>} {/* Properly render children */}
    </div>
  );
};

const App = ({ forCafe = true, cafeId = -1,
  handleClose, otherCafes }) => {
  const [selectedCafeId, setSelectedCafeId] = useState(cafeId);
  const [analytics, setAnalytics] = useState({});
  const [loading, setLoading] = useState(true);
  const [filter, setFilter] = useState("yesterday");

  const fetchData = async (filter) => {
    if (selectedCafeId == '-1') return;
    try {
      setLoading(true);
      // Fetch the analytics data with the selected filter
      const analyticsData = (selectedCafeId !== '' && selectedCafeId !== 0)
        ? await getReports(selectedCafeId, filter)
        : await getAnalytics(filter);

      console.log(analyticsData);
      if (analyticsData) setAnalytics(analyticsData);
    } catch (error) {
      console.error("Error fetching data:", error);
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    setSelectedCafeId(cafeId)
  }, [cafeId]);

  useEffect(() => {
    fetchData(filter); // Fetch data when filter changes
  }, [filter, selectedCafeId]);

  const filteredItems = analytics?.itemSales || analytics?.items || [];

  const colors = [
    "#af9463", // Bright Red
    "#F4A261", // Soft Orange
    "#FFD166", // Sunshine Yellow
    "#06D6A0", // Mint Green
    "#118AB2", // Rich Teal
    "#9D4EDD", // Vivid Violet
    "#FF66B3", // Bubblegum Pink
    "#FF7F50", // Coral
    "#FFA07A", // Light Salmon
    "#F7CAD0", // Blush Pink
    "#A8DADC", // Aqua Blue
    "#457B9D", // Steel Blue
    "#2A9D8F", // Jungle Green
    "#FFB703", // Mustard Yellow
    "#E9C46A", // Honey Gold
    "#264653", // Charcoal Green
    "#D4A5A5", // Rose Beige
    "#A6D6F0", // Sky Blue
    "#BC4749", // Cranberry Red
  ];

  const totalSoldAcrossAllCafes = filteredItems.reduce((total, cafe) => {
    const cafeTotal = (cafe.report?.itemSales || []).reduce((sum, item) => sum + item.sold, 0);
    return total + cafeTotal;
  }, 0);

  // Define a color palette or generate colors dynamically
  const colorPalette = colors;

  // Ensure that each segment gets a unique color
  let colorIndex = 0;

  console.log(filteredItems)
  let segments = (selectedCafeId == 0 || selectedCafeId == -1) ? filteredItems.flatMap((cafe) => {
    const cafeItems = cafe.report?.itemSales || [];
    console.log(cafeItems); // Log all items for the cafe

    return cafeItems.map((item, index) => {
      const percentage = totalSoldAcrossAllCafes > 0
        ? ((item.sold / totalSoldAcrossAllCafes) * 100).toFixed(2)
        : 0;

      console.log(`${item.itemName}: ${(percentage)}%`); // Log item name and percentage

      // Assign a unique color from the color palette
      const color = colorPalette[colorIndex % colorPalette.length]; // Use modulo to cycle through colors

      colorIndex++; // Increment to ensure a new color for the next item

      return {
        itemName: item.itemName,
        sold: item.sold,
        percentage: percentage,
        color: color,
      };
    });
  }) : filteredItems.map((item, index) => {
    const color = colorPalette[colorIndex % colorPalette.length]; // Use modulo to cycle through colors
    colorIndex++; // Increment to ensure a new color for the next item
    return {
      itemName: item.itemName,
      percentage: item.percentage,
      color: color,
    };
  });

  segments.sort((a, b) => b.sold - a.sold);


  console.log(selectedCafeId)
  console.log(segments)

  const formatIncome = (amount) => {
    if (amount >= 1_000_000_000) {
      // Format for billions
      const billions = amount / 1_000_000_000;
      return billions.toFixed(0) + "b"; // No decimal places for billions
    } else if (amount >= 1_000_000) {
      // Format for millions
      const millions = amount / 1_000_000;
      return millions.toFixed(2).replace(/\.00$/, "") + "m"; // Two decimal places, remove trailing '.00'
    } else if (amount >= 1_000) {
      // Format for thousands
      const thousands = amount / 1_000;
      return thousands.toFixed(1).replace(/\.0$/, "") + "k"; // One decimal place, remove trailing '.0'
    } else {
      // Less than a thousand
      if (amount != null) return amount.toString();
    }
  };

  function roundToInteger(num) {
    return Math.round(num);
  }

  function onToggle(selectedItem) {
    setAnalytics({});
    const filterMap = ["yesterday", "weekly", "monthly", "yearly"];
    setFilter(filterMap[selectedItem]);
  }

  const filterTexts = ["1", "7", "30", "365"];
  const comparisonText =
    filterTexts[["yesterday", "weekly", "monthly", "yearly"].indexOf(filter)];

  const [resetKey, setResetKey] = useState(0); // A key to force re-render
  const [texts, setTexts] = useState(['buat kedai']); // initially show only first 3 texts
  const [fullTexts, setFullTexts] = useState(null); // initially show only first 3 texts
  const [fullTextsVisible, setFullTextsVisible] = useState(null); // initially show only first 3 texts

  useEffect(() => {
    if (otherCafes != null) {
      let updatedFullTexts;

      if (otherCafes.length === 0) {
        updatedFullTexts = [["buat kedai", 0]];
      } else if (otherCafes.length === 1) {
        updatedFullTexts = [
          [otherCafes[0].name, otherCafes[0].cafeId],
          ["buat kedai", -1]
        ];

        setSelectedCafeId(otherCafes[0].cafeId); // Get the cafeId (second part of the pair)
      } else {
        updatedFullTexts = [
          ["semua", 0], // First entry is "semua"
          ...otherCafes.map(cafe => [cafe.name, cafe.cafeId]), // Map over cafes to get name and cafeId pairs
          ["tambah kedai +", -1] // Add the "+" entry
        ];
      }

      setFullTexts(updatedFullTexts); // Set fullTexts with the original structure
      // Set fullTextsVisible to an array of names only
      setFullTextsVisible(updatedFullTexts.map(item => item[0])); // Extract just the names (first part of each pair)

      // Set the first 3 items in texts
      setTexts(updatedFullTexts.map(item => item[0]).slice(0, 3));

      // Increment resetKey to trigger re-render
      setResetKey(prevKey => prevKey + 1);
    }

    console.log(otherCafes);
  }, [otherCafes]);


  console.log(fullTexts)
  const [selectedSwitch, setSelectedSwitch] = useState(0);

  const onItemToggle = (index) => {

    // When user clicks the last visible option (index === 2 in the current view)
    if (index === 2) {
      console.log(fullTexts);
      if (fullTexts.findIndex(item => item[0] === texts[2]) < fullTexts.length - 1) {
        setTexts((prevTexts) => {
          const newTexts = [...prevTexts];
          console.log(prevTexts.length)
          const nextText = fullTexts[fullTexts.findIndex(item => item[0] === texts[2]) + 1][0]; // Get the next item in the full list
          newTexts.shift(); // Remove the first element
          newTexts.push(nextText); // Add the next item to the end
          setSelectedSwitch(1); // Change the selected index
          return newTexts;
        });
      }
    }

    // When user clicks the first visible option (index === 0 in the current view)
    if (index === 0) {
      // Check if there is a previous text in the full list (before the first visible text)
      if (fullTexts.findIndex(item => item[0] === texts[0]) > 0) {
        setTexts((prevTexts) => {
          const newTexts = [...prevTexts];
          const prevText = fullTexts[fullTexts.findIndex(item => item[0] === newTexts[0]) - 1]; // Get the previous item
          newTexts.pop(); // Remove the last element
          newTexts.unshift(prevText[0]); // Add the previous item to the start
          setSelectedSwitch(1); // Change the selected index
          return newTexts;
        });
      }
    }

    // Dynamically update selectedSwitch state to trigger re-render
    setSelectedSwitch(index);

    // Get the cafeId from the selected text based on the index
    const selectedText = texts[index]; // Get the selected name from the texts array
    const selectedItem = fullTexts.find(item => item[0] === selectedText); // Find the corresponding full item
    if (selectedItem) {
      setSelectedCafeId(selectedItem[1]); // Get the cafeId (second part of the pair)
    }

    setResetKey((prevKey) => prevKey + 1); // Increase the key to force re-render
  };

  // useEffect(() => {
  //   // This effect will run whenever the selectedSwitch changes
  //   // We could add logic here if needed for side effects
  // }, [selectedSwitch]);

  return (
    <div style={{
      position: forCafe ? 'fixed' : 'relative',
      height: '100vh',
      width: '100vw',
      top: 0,
      right: 0,
      backgroundColor: 'white',
      overflowY: forCafe ? 'auto' : 'none',
      color: 'black',
      marginTop: forCafe ? 0 : '-22vh'
    }}
    >
      <div style={{ display: 'flex', alignItems: 'center', padding: forCafe ? '0px 20px' : '0px 15px', justifyContent: forCafe ? 'flex-start' : 'space-between' }}>
        {forCafe && <div style={{ marginTop: '49px', marginRight: '10px' }} onClick={handleClose}><svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 512 512"><path d="M48,256c0,114.87,93.13,208,208,208s208-93.13,208-208S370.87,48,256,48,48,141.13,48,256Zm212.65-91.36a16,16,0,0,1,.09,22.63L208.42,240H342a16,16,0,0,1,0,32H208.42l52.32,52.73A16,16,0,1,1,238,347.27l-79.39-80a16,16,0,0,1,0-22.54l79.39-80A16,16,0,0,1,260.65,164.64Z" /></svg></div>}
        <div style={{ marginTop: '10px' }}>
          {!forCafe &&

            // <MultiSwitch
            //   key={resetKey} // Add key to reset the component and force it to re-render
            //   texts={texts}
            //   selectedSwitch={selectedSwitch}
            //   bgColor={'#f4efe6'}
            //   borderColor={'transparent'}
            //   borderWidth={0.1}
            //   onToggleCallback={onItemToggle}
            //   fontColor={"#af9463"}
            //   selectedFontColor={"black"}
            //   selectedSwitchColor={"white"}
            //   eachSwitchWidth={70}
            //   height={"25px"}
            //   fontSize={"12px"}
            // />

            <div className={styles.dateSelectorWrapper} style={{ fontSize: '13px' }}>
              {texts.map((item, indexx) => {
                return (
                  <div
                    key={indexx}
                    className={`${styles.dateSelector} ${styles.dateSelectorActive}`} style={{ position: 'relative', width: 'calc(32vw - 30px)' }}
                    onClick={() => onItemToggle(indexx)}
                  >
                    <div style={{ position: 'absolute', bottom: 0, left: '10%', right: '10%', borderBottom: selectedSwitch == indexx ? `1px solid green` : 'none' }}></div>
                    <div
                      style={{ color: 'black' }}>
                      {item}

                    </div>
                  </div>
                );
              })}
            </div>
          }
        </div>
      </div>
      {!forCafe && selectedCafeId != -1 &&
        <div style={{
          textAlign: "center",
          marginTop: '30px'
        }}>
          <MultiSwitch
            texts={["kemarin", "minggu ini", "bulan ini", "tahun ini"]}
            selectedSwitch={["yesterday", "weekly", "monthly", "yearly"].indexOf(
              filter
            )}
            bgColor={'#f4efe6'}
            borderColor={'transparent'}
            borderWidth={0.1}
            onToggleCallback={onToggle}
            fontColor={"#af9463"}
            selectedFontColor={"black"}
            selectedSwitchColor={"white"}
            eachSwitchWidth={70}
            height={"25px"}
            fontSize={"12px"}
          />
          <div
            style={{
              display: "flex",
              flexWrap: "wrap",
              justifyContent: "center",
              padding: "20px",
            }}
          >
            <RoundedRectangle
              title="Pendapatan"
              fontSize="12px"
              value={!loading && "Rp" + formatIncome(analytics?.currentTotals?.income)}
              percentage={roundToInteger(analytics?.growth?.incomeGrowth)}
              invert={false}
              loading={loading}
            />

            <RoundedRectangle
              title="Pengeluaran"
              fontSize="12px"
              value={!loading && "Rp" + formatIncome(analytics?.currentTotals?.outcome)}
              percentage={roundToInteger(analytics?.growth?.outcomeGrowth)}
              invert={true}
              loading={loading}
            />
            <RoundedRectangle
              title="Transaksi"
              value={analytics?.currentTotals?.transactions}
              percentage={roundToInteger(analytics?.growth?.transactionGrowth)}
              invert={false}
              loading={loading}
            />
            {analytics?.itemSales &&
              analytics?.itemSales.length > 0 && (
                <RoundedRectangle
                  title={"Item favorit"}
                  value={analytics?.itemSales[0]?.itemName}
                  loading={loading}
                />
              )}
            {(!analytics?.itemSales ||
              analytics?.itemSales.length === 0) && (
                <RoundedRectangle
                  title={"Item favorit"}
                  value={"-"}
                  loading={loading}
                />
              )}
            {!forCafe && selectedCafeId != -1 && selectedCafeId != 0 && (
              <RoundedRectangle
                title={"Kunjungi kedai"}
                loading={loading}
                width="calc(100% - 10px)"
                onClick={() => window.location.href = window.location.origin + '/' + otherCafes.find(item => item.cafeId === selectedCafeId).cafeIdentifyName}
              />
            )}
            <div
              style={{ display: "flex", alignItems: "center", margin: "10px" }}
            >
              <div style={{ marginRight: "5px", fontSize: "1.2em" }}>ⓘ</div>
              <h6 style={{ margin: 0, textAlign: "left", fontSize: '10px', fontWeight: 500 }}>
                Persentase pertumbuhan dihitung dengan membandingkan {" "}
                {comparisonText} hari terakhir dengan {comparisonText} hari sebelumnya.
              </h6>
            </div>
          </div>
          <div
            style={{
              display: "flex",
              alignItems: "center",
              justifyContent: "space-between",
              padding: "20px",
            }}
          >
            <div style={{ flex: 1 }}>
              <CircularDiagram segments={segments} />
            </div>
            <div style={{ flex: 1, marginLeft: "20px" }}>
              {segments.map((item, index) => (
                <div
                  key={index}
                  style={{
                    display: "flex",
                    alignItems: "center",
                    margin: "10px",
                  }}
                >
                  <div
                    style={{
                      marginRight: "5px",
                      fontSize: "1.2em",
                      color: colors[index],
                    }}
                  >
                    ★
                  </div>
                  <h5 style={{ margin: 0, textAlign: "left" }}>{item.itemName}</h5>
                </div>
              ))}
            </div>
          </div>
          {filter == 'yesterday' || filter == 'weekly' ?
            <DailyCharts transactionGraph={analytics?.transactionGraph || analytics?.combinedTransactionGraph} type={filter} colors={colors} />
            :
            <PeriodCharts type={filter} aggregatedCurrentReports={analytics?.aggregatedCurrentReports} aggregatedPreviousReports={analytics?.aggregatedPreviousReports} colors={colors} />
          }
        </div>
      }
      {!forCafe && selectedCafeId == -1 &&
        <div style={{
          textAlign: "center",
          marginTop: '30px'
        }}>
          <div
            style={{
              display: "flex",
              flexWrap: "wrap",
              justifyContent: "center",
              padding: "20px",
            }}
          >
            
            <RoundedRectangle
                title={"Masukkan nama kedai"}
                width="calc(100% - 10px)"
              ><input style={{width: '70%', fontSize: '25px'}}/></RoundedRectangle>
              <RoundedRectangle
                  title={"Buat kedai"}
                  width="calc(100% - 10px)"
                />
          </div>
        </div>
      }
    </div>
  );
};

export default App;