package com.simuwang.daq.components;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.ReflectUtil;
import cn.hutool.core.util.StrUtil;
import com.simuwang.base.common.exception.APIException;
import com.simuwang.base.mapper.EmailFieldMappingMapper;
import com.simuwang.base.pojo.dos.EmailFieldMappingDO;
import com.simuwang.daq.dto.ReportFundInfo;
import com.simuwang.daq.dto.ReportInfo;
import com.smppw.common.pojo.ValueLabelVO;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.io.RandomAccessReadBufferedFile;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.springframework.stereotype.Component;
import technology.tabula.*;
import technology.tabula.extractors.SpreadsheetExtractionAlgorithm;

import java.io.IOException;
import java.sql.Struct;
import java.util.Calendar;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

/**
 * @author wangzaijun
 * @date 2024/9/11 16:19
 * @description pdf格式的月报解析
 */
@Component("monthly-report:pdf")
public class PDMonthlyReportParser extends AbstractReportParser {
    private final EmailFieldMappingMapper fieldMappingMapper;
    private String reportName = null;
    private Table baseInfoTable = null;
    private List<Table> extNavTables = ListUtil.list(true);
    private List<ValueLabelVO> fieldMapper = null;

    public PDMonthlyReportParser(EmailFieldMappingMapper fieldMappingMapper) {
        this.fieldMappingMapper = fieldMappingMapper;
    }

    @Override
    protected void initParse() throws IOException {
        try (PDDocument document = Loader.loadPDF(new RandomAccessReadBufferedFile(this.filepath))) {
            CustomPDFTextStripper stripper = new CustomPDFTextStripper();
            stripper.setSortByPosition(true);
            String text = stripper.getText(document);
            text = text.replace("++\r\n", "").replace("++", "");
            List<String> textList = StrUtil.split(text, "\r\n");
            if (CollUtil.isNotEmpty(textList)) {
                List<String> wkList = this.watermarkListMap.get("report_name");
                String name = this.processString(wkList, textList.get(0));
                this.reportName = this.matchReportName(name);
                if (StrUtil.isBlank(this.reportName)) {
                    throw new APIException("未匹配到报告名称");
                }
            }

            SpreadsheetExtractionAlgorithm extractionAlgorithm = new SpreadsheetExtractionAlgorithm();
            PageIterator pageIterator = new ObjectExtractor(document).extract();
            while (pageIterator.hasNext()) {
                Page page = pageIterator.next();
                List<Table> tables = extractionAlgorithm.extract(page);
                tables = tables.stream().distinct().collect(Collectors.toList());
                for (Table table : tables) {
                    int colCount = table.getColCount();
                    if (colCount == 4) {
                        this.baseInfoTable = table;
                    } else if (colCount >= 5) {
                        this.extNavTables.add(table);
                    }
                }
            }
        }
        List<EmailFieldMappingDO> emailFieldMapping = this.fieldMappingMapper.getEmailFieldMapping();
        if (CollUtil.isNotEmpty(emailFieldMapping)) {
            this.fieldMapper = emailFieldMapping.stream().map(e -> new ValueLabelVO(e.getCode(), e.getName())).collect(Collectors.toList());
        }
    }

    @Override
    protected ReportInfo parseReportInfo(Integer fileId) {
        ReportInfo reportInfo = new ReportInfo();
        reportInfo.setFileId(fileId);
        reportInfo.setReportName(this.reportName);
        reportInfo.setReportType(this.matchReportType(this.reportName));
        reportInfo.setReportDate(this.matchReportDate(this.reportName));
        return reportInfo;
    }

    @Override
    protected ReportFundInfo parseBaseInfo() {
        Table baseInfoTable = this.baseInfoTable;
        if (baseInfoTable == null) {
            throw new APIException("未解析到基本信息表格");
        }
        Map<String, Object> baseInfoMap = MapUtil.newHashMap(32);
        for (int i = 0; i < baseInfoTable.getRows().size(); i++) {
            List<RectangularTextContainer> cols = baseInfoTable.getRows().get(i);
            for (int j = 0; j < 2; j++) {
                baseInfoMap.put(cols.get(j * 2).getText(), cols.get(j * 2 + 1).getText());
            }
        }
        // 匹配字段清洗字段
        ReportFundInfo reportFundInfo = new ReportFundInfo();
        baseInfoMap.forEach((k, v) -> {
            String fieldValue = StrUtil.toStringOrNull(v);
            if (fieldValue.contains("-")) {
                fieldValue = null;
            }
            if (fieldValue != null) {
                fieldValue = fieldValue.replace("\r", "");
            }
            for (ValueLabelVO vo : this.fieldMapper) {
                String fieldName = vo.getValue();
                List<String> labels = StrUtil.split(vo.getLabel(), ",");
                if (labels.contains(k)) {
                    ReflectUtil.setFieldValue(reportFundInfo, fieldName, fieldValue);
                    break;
                }
                for (String label : labels) {
                    if (k.contains(label)) {
                        ReflectUtil.setFieldValue(reportFundInfo, fieldName, fieldValue);
                        break;
                    }
                }
            }
        });
        return reportFundInfo;
    }

    @Override
    protected void parseExtInfo() {

    }

    @Override
    protected void saveResult() {

    }

    /**
     * 匹配报告日期
     *
     * @param string 文本内容
     * @return 报告日期
     */
    private String matchReportDate(String string) {
        if (string == null) {
            return null;
        }

        // 编译正则表达式模式
        Pattern pat1 = Pattern.compile("(2\\d{3}).*([一二三四1234])季度");  // 2023年XXX3季度
        Pattern pat2 = Pattern.compile("\\d{4}-\\d{2}-\\d{2}");  // 2023-12-31
        Pattern pat3 = Pattern.compile("(2\\d{3})年年度");  // 2023年年度
        Pattern pat4 = Pattern.compile("(\\d{4})年(\\d{1,2})月");  // 2023年12月

        // 创建Matcher对象
        Matcher matcher1 = pat1.matcher(string);
        Matcher matcher2 = pat2.matcher(string);
        Matcher matcher3 = pat3.matcher(string);
        Matcher matcher4 = pat4.matcher(string);

        // 尝试匹配
        if (matcher1.find()) {
            String year = matcher1.group(1);
            String quarter = matcher1.group(2);
            return switch (quarter) {
                case "一", "1" -> year + "-03-31";
                case "二", "2" -> year + "-06-30";
                case "三", "3" -> year + "-09-30";
                case "四", "4" -> year + "-12-31";
                default -> null;
            };
        } else if (matcher2.find()) {
            return matcher2.group();
        } else if (matcher3.find()) {
            return matcher3.group(1) + "-12-31";
        } else if (matcher4.find()) {
            String year = matcher4.group(1);
            String month = matcher4.group(2);
            int lastDayOfMonth = getLastDayOfMonth(Integer.parseInt(year), Integer.parseInt(month));
            return year + "-" + padZero(month) + "-" + padZero(lastDayOfMonth + "");
        } else {
            return null;
        }
    }

    /**
     * 匹配报告类型，如“季度”、“年度”
     *
     * @param string 输入字符串
     * @return 匹配到的报告类型子字符串，如果没有匹配到则返回null
     */
    private String matchReportType(String string) {
        if (string == null) {
            return null;
        }

        // 编译正则表达式模式
        Pattern pattern = Pattern.compile("月|季度|年度");

        // 创建Matcher对象
        Matcher matcher = pattern.matcher(string);

        // 尝试匹配
        if (matcher.find()) {
            return matcher.group();
        } else {
            return null;
        }
    }

    private String matchReportName(String text) {
        if (StrUtil.isBlank(text)) {
            return null;
        }
        // 编译正则表达式模式
        Pattern pat1 = Pattern.compile(".+?报([告表])?\\d{4}(\\.?\\d{1,2}(\\.?\\d{2})?)?");
        Pattern pat2 = Pattern.compile("私募.*披露年度报[告表](（\\d{4}-\\d{2}-\\d{2}至\\d{4}-\\d{2}-\\d{2}）)?");
        Pattern pat3 = Pattern.compile(".+?报([告表])?\\d{4}-\\d{2}-\\d{2}至\\d{4}-\\d{2}-\\d{2}?");

        // 创建Matcher对象
        Matcher matcher1 = pat1.matcher(text);
        Matcher matcher2 = pat2.matcher(text);
        Matcher matcher3 = pat3.matcher(text);

        // 尝试匹配
        String reportName;
        if (matcher1.find()) {
            reportName = matcher1.group();
        } else if (matcher2.find()) {
            reportName = matcher2.group();
        } else if (matcher3.find()) {
            reportName = matcher3.group();
        } else {
            return null;
        }
        return reportName.replace("（", "(").replace("）", ")");
    }

    private int getLastDayOfMonth(int year, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month - 1); // Calendar.MONTH 是从0开始的
        return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    }

    private String padZero(String number) {
        return String.format("%02d", Integer.parseInt(number));
    }
}