//src\components\ReportSearchBox\SearchBox.tsx
"use client";

import Grid from "@mui/material/Grid";
import Card from "@mui/material/Card";
import CardContent from "@mui/material/CardContent";
import Typography from "@mui/material/Typography";
import React, { useCallback, useMemo, useState } from "react";
import { useTranslation } from "react-i18next";
import TextField from "@mui/material/TextField";
import FormControl from "@mui/material/FormControl";
import InputLabel from "@mui/material/InputLabel";
import Select, { SelectChangeEvent } from "@mui/material/Select";
import MenuItem from "@mui/material/MenuItem";
import CardActions from "@mui/material/CardActions";
import Button from "@mui/material/Button";
import RestartAlt from "@mui/icons-material/RestartAlt";
import Search from "@mui/icons-material/Search";
import dayjs from "dayjs";
import "dayjs/locale/zh-hk";
import { DatePicker } from "@mui/x-date-pickers/DatePicker";
import { LocalizationProvider } from "@mui/x-date-pickers/LocalizationProvider";
import { AdapterDayjs } from "@mui/x-date-pickers/AdapterDayjs";
import { Box } from "@mui/material";
import * as XLSX from 'xlsx-js-style';
//import { DownloadReportButton } from '../LateStartReportGen/DownloadReportButton';

interface BaseCriterion<T extends string> {
  label: string;
  label2?: string;
  paramName: T;
  paramName2?: T;
}

interface TextCriterion<T extends string> extends BaseCriterion<T> {
  type: "text";
}

interface SelectCriterion<T extends string> extends BaseCriterion<T> {
  type: "select";
  options: string[];
}

interface DateRangeCriterion<T extends string> extends BaseCriterion<T> {
  type: "dateRange";
}

export type Criterion<T extends string> =
  | TextCriterion<T>
  | SelectCriterion<T>
  | DateRangeCriterion<T>;

interface Props<T extends string> {
  criteria: Criterion<T>[];
  onSearch: (inputs: Record<T, string>) => void;
  onReset?: () => void;
}

function SearchBox<T extends string>({
  criteria,
  onSearch,
  onReset,
}: Props<T>) {
  const { t } = useTranslation("common");
  const defaultInputs = useMemo(
    () =>
      criteria.reduce<Record<T, string>>(
        (acc, c) => {
          return { ...acc, [c.paramName]: c.type === "select" ? "All" : "" };
        },
        {} as Record<T, string>,
      ),
    [criteria],
  );
  const [inputs, setInputs] = useState(defaultInputs);

  const makeInputChangeHandler = useCallback(
    (paramName: T): React.ChangeEventHandler<HTMLInputElement> => {
      return (e) => {
        setInputs((i) => ({ ...i, [paramName]: e.target.value }));
      };
    },
    [],
  );

  const makeSelectChangeHandler = useCallback((paramName: T) => {
    return (e: SelectChangeEvent) => {
      setInputs((i) => ({ ...i, [paramName]: e.target.value }));
    };
  }, []);

  const makeDateChangeHandler = useCallback((paramName: T) => {
    return (e: any) => {
      setInputs((i) => ({ ...i, [paramName]: dayjs(e).format("YYYY-MM-DD") }));
    };
  }, []);

  const makeDateToChangeHandler = useCallback((paramName: T) => {
    return (e: any) => {
      setInputs((i) => ({
        ...i,
        [paramName + "To"]: dayjs(e).format("YYYY-MM-DD"),
      }));
    };
  }, []);

  const handleReset = () => {
    setInputs(defaultInputs);
    onReset?.();
  };

  const handleSearch = () => {
    onSearch(inputs);
    
  };
  const handleDownload = async () => {
    try {
      const response = await fetch('/api/reports', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({ projectId: '123' }),  // Example payload
      });
      if (!response.ok) throw new Error('Network response was not ok.');
  
      const data = await response.blob();
      const url = window.URL.createObjectURL(data);
      const a = document.createElement('a');
      a.href = url;
      a.download = "Project_Cash_Flow_Report.xlsx";
      document.body.appendChild(a);
      a.click();
      a.remove();
    } catch (error) {
      console.error('Error downloading the file: ', error);
    }
  };
  // const handleDownload = async () => {
  //   //setIsLoading(true);

  //   try {
  //     const response = await fetch('/temp/AR01_Late Start Report.xlsx', {
  //       headers: {
  //         'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
  //       },
  //     });
  //     if (!response.ok) throw new Error('Network response was not ok.');

  //     const data = await response.blob();
  //     const reader = new FileReader();
  //     reader.onload = (e) => {
  //       if (e.target && e.target.result) {
  //         const ab = e.target.result as ArrayBuffer;
  //         const workbook = XLSX.read(ab, { type: 'array' });
  //         const firstSheetName = workbook.SheetNames[0];
  //         const worksheet = workbook.Sheets[firstSheetName];
          
  //         // Add the current date to cell C2
  //         const cellAddress = 'C2';
  //         const date = new Date().toISOString().split('T')[0]; // Format YYYY-MM-DD
  //         const formattedDate = date.replace(/-/g, '/'); // Change format to YYYY/MM/DD
  //         XLSX.utils.sheet_add_aoa(worksheet, [[formattedDate]], { origin: cellAddress });

  //         // Style for cell A1: Font size 16 and bold
  //       if (worksheet['A1']) {
  //         worksheet['A1'].s = {
  //           font: {
  //             bold: true,
  //             sz: 16,  // Font size 16
  //             //name: 'Times New Roman' // Specify font
  //           }
  //         };
  //       }

  //         // Apply styles from A2 to A4 (bold)
  //       ['A2', 'A3', 'A4'].forEach(cell => {
  //         if (worksheet[cell]) {
  //           worksheet[cell].s = { font: { bold: true } };
  //         }
  //       });

  //       // Formatting from A6 to J6
  //       // Apply styles from A6 to J6 (bold, bottom border, center alignment)
  //       for (let col = 0; col < 10; col++) { // Columns A to J
  //         const cellRef = XLSX.utils.encode_col(col) + '6';
  //         if (worksheet[cellRef]) {
  //           worksheet[cellRef].s = {
  //             font: { bold: true },
  //             alignment: { horizontal: 'center' },
  //             border: {
  //               bottom: { style: 'thin', color: { auto: 1 } }
  //             }
  //           };
  //         }
  //       }

  //       const firstTableData = [
  //         ['Column1', 'Column2', 'Column3'], // Row 1
  //         ['Data1', 'Data2', 'Data3'],       // Row 2
  //         // ... more rows as needed
  //       ];
  //       // Find the last row of the first table
  //       let lastRowOfFirstTable = 6; // Starting row for data in the first table
  //       while (worksheet[XLSX.utils.encode_cell({ c: 0, r: lastRowOfFirstTable })]) {
  //         lastRowOfFirstTable++;
  //       }
        
  //       // Calculate the maximum length of content in each column and set column width
  //       const colWidths: number[] = [];

  //       const jsonData = XLSX.utils.sheet_to_json(worksheet, { header: 1, defval: "", blankrows: true }) as (string | number)[][];
  //       jsonData.forEach((row: (string | number)[]) => {
  //         row.forEach((cell: string | number, index: number) => {
  //           const valueLength = cell.toString().length;
  //           colWidths[index] = Math.max(colWidths[index] || 0, valueLength);
  //         });
  //       });

  //       // Apply calculated widths to each column, skipping column A
  //       worksheet['!cols'] = colWidths.map((width, index) => {
  //         if (index === 0) {
  //           return { wch: 8 }; // Set default or specific width for column A if needed
  //         }
  //         return { wch: width + 2 }; // Add padding to width
  //       });

  //       // Format filename with date
  //       const today = new Date().toISOString().split('T')[0].replace(/-/g, '_'); // Get current date and format as YYYY_MM_DD
  //       const filename = `AR01_Late_Start_Report_${today}.xlsx`; // Append formatted date to the filename

  //         // Convert workbook back to XLSX file
  //         XLSX.writeFile(workbook, filename);
  //       } else {
  //         throw new Error('Failed to load file');
  //       }
  //     };
  //     reader.readAsArrayBuffer(data);
  //   } catch (error) {
  //     console.error('Error downloading the file: ', error);
  //   }

  //   //setIsLoading(false);
  // };
  return (
    <Card>
      <CardContent sx={{ display: "flex", flexDirection: "column", gap: 1 }}>
        <Typography variant="overline">{t("Search Criteria")}</Typography>
        <Grid container spacing={2} columns={{ xs: 6, sm: 12 }}>
          {criteria.map((c) => {
            return (
              <Grid key={c.paramName} item xs={6}>
                {c.type === "text" && (
                  <TextField
                    label={c.label}
                    fullWidth
                    onChange={makeInputChangeHandler(c.paramName)}
                    value={inputs[c.paramName]}
                  />
                )}
                {c.type === "select" && (
                  <FormControl fullWidth>
                    <InputLabel>{c.label}</InputLabel>
                    <Select
                      label={c.label}
                      onChange={makeSelectChangeHandler(c.paramName)}
                      value={inputs[c.paramName]}
                    >
                      <MenuItem value={"All"}>{t("All")}</MenuItem>
                      {c.options.map((option, index) => (
                        <MenuItem key={`${option}-${index}`} value={option}>
                          {option}
                        </MenuItem>
                      ))}
                    </Select>
                  </FormControl>
                )}
                {c.type === "dateRange" && (
                  <LocalizationProvider
                    dateAdapter={AdapterDayjs}
                    // TODO: Should maybe use a custom adapterLocale here to support YYYY-MM-DD
                    adapterLocale="zh-hk"
                  >
                    <Box display="flex">
                      <FormControl fullWidth>
                        <DatePicker
                          label={c.label}
                          onChange={makeDateChangeHandler(c.paramName)}
                          value={inputs[c.paramName] ? dayjs(inputs[c.paramName]) : null}
                        />
                      </FormControl>
                      <Box
                        display="flex"
                        alignItems="center"
                        justifyContent="center"
                        marginInline={2}
                      >
                        {"-"}
                      </Box>
                      <FormControl fullWidth>
                        <DatePicker
                          label={c.label2}
                          onChange={makeDateToChangeHandler(c.paramName)}
                          value={inputs[c.paramName.concat("To") as T] ? dayjs(inputs[c.paramName.concat("To") as T]) : null}
                        />
                      </FormControl>
                    </Box>
                  </LocalizationProvider>
                )}
              </Grid>
            );
          })}
        </Grid>
          <CardActions sx={{ justifyContent: "flex-end" }}>
            <Button
              variant="text"
              startIcon={<RestartAlt />}
              onClick={handleReset}
            >
              {t("Reset")}
            </Button>
            <Button
              variant="outlined"
              startIcon={<Search />}
              onClick={handleDownload}
            >
              {t("Download")}
            </Button>
          </CardActions>
      </CardContent>
    </Card>
  );
}

export default SearchBox;