"use client";

import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog";
import { Button } from "@/components/ui/button";
import { Printer, FileDown, FileText, Loader2 } from "lucide-react";
import { useReportDesigner } from "@/contexts/ReportDesignerContext";
import { reportApi } from "@/lib/api/reportApi";
import { useState, useRef, useEffect } from "react";
import { useToast } from "@/hooks/use-toast";
import { getFullImageUrl } from "@/lib/api/client";
import { WatermarkLayer } from "./WatermarkLayer";
import { ConditionalRule } from "@/types/report";
import { TextRenderer, TableRenderer, ImageRenderer, DividerRenderer, SignatureRenderer, StampRenderer, PageNumberRenderer, CardRenderer, CalculationRenderer, BarcodeCanvasRenderer, CheckboxRenderer } from "./renderers";
import JsBarcode from "jsbarcode";
import QRCode from "qrcode";
import { MM_TO_PX } from "@/lib/report/constants";
import { evaluateConditionalRules } from "@/lib/report/conditionalUtils";

function evaluateConditionalRule(
  rule: ConditionalRule | undefined,
  getQueryResult: (queryId: string) => { fields: string[]; rows: Record<string, unknown>[] } | null,
  rules?: ConditionalRule[],
): boolean {
  const allRules = rules?.length ? rules : rule ? [rule] : [];
  return evaluateConditionalRules(allRules, getQueryResult);
}

interface ReportPreviewModalProps {
  isOpen: boolean;
  onClose: () => void;
}

export function ReportPreviewModal({ isOpen, onClose }: ReportPreviewModalProps) {
  const { layoutConfig, getQueryResult, reportDetail, reportId, queries, setQueryResult } = useReportDesigner();
  const [isExporting, setIsExporting] = useState(false);
  const [isLoadingQueries, setIsLoadingQueries] = useState(false);
  const { toast } = useToast();
  const previewPagesRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    if (!isOpen || queries.length === 0) return;

    const queriesToRun = queries.filter((q) => {
      const result = getQueryResult(q.id);
      return !result || result.rows.length === 0;
    });
    if (queriesToRun.length === 0) return;

    let cancelled = false;
    setIsLoadingQueries(true);

    (async () => {
      const actualReportId = reportId === "new" ? "__preview__" : reportId;
      for (const q of queriesToRun) {
        if (cancelled) break;
        try {
          const res = await reportApi.executeQuery(actualReportId, q.id, {}, q.sqlQuery, q.externalConnectionId);
          if (!cancelled && res.success && res.data) {
            setQueryResult(q.id, res.data.fields, res.data.rows);
          }
        } catch {
          // 개별 쿼리 실패는 무시
        }
      }
      if (!cancelled) setIsLoadingQueries(false);
    })();

    return () => {
      cancelled = true;
    };
    // queries 배열의 id가 변경되면 재실행되도록 queries를 직렬화하여 의존성에 포함
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [isOpen, JSON.stringify(queries.map((q) => q.id)), reportId]);

  // 컴포넌트의 실제 표시 값 가져오기
  const getComponentValue = (component: any): string => {
    if (component.queryId && component.fieldName) {
      const queryResult = getQueryResult(component.queryId);
      if (queryResult && queryResult.rows.length > 0) {
        const value = queryResult.rows[0][component.fieldName];
        if (value !== null && value !== undefined) {
          return String(value);
        }
      }
      return `{${component.fieldName}}`;
    }
    return component.defaultValue || "";
  };

  // 바코드/QR코드를 base64 이미지로 변환
  const generateBarcodeImage = async (component: any): Promise<string | null> => {
    const barcodeType = component.barcodeType || "CODE128";
    const isQR = barcodeType === "QR";

    // 바코드 값 결정
    const getBarcodeValue = (): string => {
      if (
        isQR &&
        component.qrUseMultiField &&
        component.qrDataFields &&
        component.qrDataFields.length > 0 &&
        component.queryId
      ) {
        const queryResult = getQueryResult(component.queryId);
        if (queryResult && queryResult.rows && queryResult.rows.length > 0) {
          if (component.qrIncludeAllRows) {
            const allRowsData: Record<string, string>[] = [];
            queryResult.rows.forEach((row) => {
              const rowData: Record<string, string> = {};
              component.qrDataFields.forEach((field: { fieldName: string; label: string }) => {
                if (field.fieldName && field.label) {
                  const val = row[field.fieldName];
                  rowData[field.label] = val !== null && val !== undefined ? String(val) : "";
                }
              });
              allRowsData.push(rowData);
            });
            return JSON.stringify(allRowsData);
          }
          const row = queryResult.rows[0];
          const jsonData: Record<string, string> = {};
          component.qrDataFields.forEach((field: { fieldName: string; label: string }) => {
            if (field.fieldName && field.label) {
              const val = row[field.fieldName];
              jsonData[field.label] = val !== null && val !== undefined ? String(val) : "";
            }
          });
          return JSON.stringify(jsonData);
        }
      }

      if (component.barcodeFieldName && component.queryId) {
        const queryResult = getQueryResult(component.queryId);
        if (queryResult && queryResult.rows && queryResult.rows.length > 0) {
          if (isQR && component.qrIncludeAllRows) {
            const allValues = queryResult.rows
              .map((row) => {
                const val = row[component.barcodeFieldName];
                return val !== null && val !== undefined ? String(val) : "";
              })
              .filter((v) => v !== "");
            return JSON.stringify(allValues);
          }
          const row = queryResult.rows[0];
          const val = row[component.barcodeFieldName];
          if (val !== null && val !== undefined) {
            return String(val);
          }
        }
      }
      return component.barcodeValue || "SAMPLE123";
    };

    const barcodeValue = getBarcodeValue();

    try {
      if (isQR) {
        // QR코드를 canvas에 렌더링 후 base64로 변환
        const canvas = document.createElement("canvas");
        const bgColor =
          component.barcodeBackground === "transparent" ? "#ffffff" : component.barcodeBackground || "#ffffff";
        await QRCode.toCanvas(canvas, barcodeValue, {
          width: Math.min(component.width, component.height) - 10,
          margin: 2,
          color: {
            dark: component.barcodeColor || "#000000",
            light: bgColor,
          },
          errorCorrectionLevel: component.qrErrorCorrectionLevel || "M",
        });
        return canvas.toDataURL("image/png");
      } else {
        // 1D 바코드를 SVG로 렌더링 후 base64로 변환
        const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
        const bgColor = component.barcodeBackground === "transparent" ? "" : component.barcodeBackground || "#ffffff";
        JsBarcode(svg, barcodeValue.trim(), {
          format: barcodeType.toLowerCase(),
          width: 2,
          height: Math.max(30, component.height - 40),
          displayValue: component.showBarcodeText !== false,
          lineColor: component.barcodeColor || "#000000",
          background: bgColor,
          margin: component.barcodeMargin ?? 10,
          fontSize: 12,
          textMargin: 2,
        });
        const svgData = new XMLSerializer().serializeToString(svg);
        const svgBase64 = btoa(unescape(encodeURIComponent(svgData)));
        return `data:image/svg+xml;base64,${svgBase64}`;
      }
    } catch (error) {
      console.error("바코드 생성 오류:", error);
      return null;
    }
  };

  const handlePrint = async () => {
    // 바코드 이미지 미리 생성
    const pagesWithBarcodes = await Promise.all(
      layoutConfig.pages.map(async (page) => {
        const componentsWithBarcodes = await Promise.all(
          (Array.isArray(page.components) ? page.components : []).map(async (component) => {
            if (component.type === "barcode") {
              const barcodeImage = await generateBarcodeImage(component);
              return { ...component, barcodeImageBase64: barcodeImage };
            }
            return component;
          }),
        );
        return { ...page, components: componentsWithBarcodes };
      }),
    );

    // HTML 생성하여 인쇄
    const printHtml = generatePrintHTML(pagesWithBarcodes);

    const printWindow = window.open("", "_blank");
    if (!printWindow) return;

    printWindow.document.write(printHtml);
    printWindow.document.close();
    // print()는 HTML 내 스크립트에서 이미지 로드 완료 후 자동 호출됨
  };

  // 워터마크 HTML 생성 헬퍼 함수
  const generateWatermarkHTML = (watermark: any, pageWidth: number, pageHeight: number): string => {
    if (!watermark?.enabled) return "";

    const opacity = watermark.opacity ?? 0.3;
    const rotation = watermark.rotation ?? -45;

    // 공통 래퍼 스타일
    const wrapperStyle = `position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; overflow: hidden; z-index: 0;`;

    // 텍스트 컨텐츠 생성
    const textContent =
      watermark.type === "text"
        ? `<span style="font-size: ${watermark.fontSize || 48}px; color: ${watermark.fontColor || "#cccccc"}; font-weight: bold; white-space: nowrap;">${watermark.text || "WATERMARK"}</span>`
        : watermark.imageUrl
          ? `<img src="${watermark.imageUrl.startsWith("data:") ? watermark.imageUrl : getFullImageUrl(watermark.imageUrl)}" style="max-width: 50%; max-height: 50%; object-fit: contain;" />`
          : "";

    if (watermark.style === "diagonal") {
      return `
        <div style="${wrapperStyle}">
          <div style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) rotate(${rotation}deg); opacity: ${opacity};">
            ${textContent}
          </div>
        </div>`;
    }

    if (watermark.style === "center") {
      return `
        <div style="${wrapperStyle}">
          <div style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); opacity: ${opacity};">
            ${textContent}
          </div>
        </div>`;
    }

    if (watermark.style === "tile") {
      const tileSize = watermark.type === "text" ? (watermark.fontSize || 48) * 4 : 150;
      const cols = Math.ceil((pageWidth * MM_TO_PX) / tileSize) + 2;
      const rows = Math.ceil((pageHeight * MM_TO_PX) / tileSize) + 2;
      const tileItems = Array.from({ length: rows * cols })
        .map(
          () =>
            `<div style="width: ${tileSize}px; height: ${tileSize}px; display: flex; align-items: center; justify-content: center;">${textContent}</div>`,
        )
        .join("");

      return `
        <div style="${wrapperStyle}">
          <div style="position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; display: flex; flex-wrap: wrap; align-content: flex-start; transform: rotate(${rotation}deg); opacity: ${opacity};">
            ${tileItems}
          </div>
        </div>`;
    }

    return "";
  };

  // 페이지별 컴포넌트 HTML 생성
  const generatePageHTML = (
    pageComponents: any[],
    pageWidth: number,
    pageHeight: number,
    backgroundColor: string,
    pageIndex: number = 0,
    totalPages: number = 1,
    watermark?: any,
  ): string => {
    const componentsHTML = pageComponents
      .filter((component) => {
        const isGrid = component.gridMode === true;
        const rule = isGrid ? component.gridConditionalRule : component.conditionalRule;
        const rules = isGrid ? component.gridConditionalRules : component.conditionalRules;
        return evaluateConditionalRule(rule, getQueryResult, rules);
      })
      .map((component) => {
        const queryResult = component.queryId ? getQueryResult(component.queryId) : null;
        let content = "";

        // Text/Label 컴포넌트
        if (component.type === "text" || component.type === "label") {
          const displayValue = getComponentValue(component);
          const isOverflowHidden = component.textOverflow === "clip" || component.textOverflow === "ellipsis";
          const vAlignMap: Record<string, string> = { top: "flex-start", middle: "center", bottom: "flex-end" };
          const vAlign = vAlignMap[component.verticalAlign || "top"] || "flex-start";
          content = `<div style="display:flex;align-items:${vAlign};width:100%;height:100%;overflow:hidden;"><div style="width:100%;font-size:${component.fontSize || 12}px;font-family:${component.fontFamily || "Malgun Gothic"};color:${component.fontColor || "#000000"};font-weight:${component.fontWeight || "normal"};font-style:${component.fontStyle || "normal"};text-align:${component.textAlign || "left"};text-decoration:${component.textDecoration || "none"};line-height:${component.lineHeight || 1.5};${component.letterSpacing ? `letter-spacing:${component.letterSpacing}px;` : ""}white-space:${isOverflowHidden ? "nowrap" : "pre-wrap"};${isOverflowHidden ? "overflow:hidden;" : ""}${component.textOverflow === "ellipsis" ? "text-overflow:ellipsis;" : ""}${!isOverflowHidden ? "word-break:break-word;" : ""}">${displayValue}</div></div>`;
        }

        // Image 컴포넌트
        else if (component.type === "image" && component.imageUrl) {
          const imageUrl = component.imageUrl.startsWith("data:")
            ? component.imageUrl
            : getFullImageUrl(component.imageUrl);

          const objectFit = component.objectFit || "contain";
          const imageOpacity = component.imageOpacity ?? 1;
          const imageBorderRadius = component.imageBorderRadius || 0;
          const hasCrop = component.imageCropWidth != null && component.imageCropHeight != null && component.imageCropWidth < 100;
          
          let transformParts = [];
          if (component.imageRotation) transformParts.push(`rotate(${component.imageRotation}deg)`);
          if (component.imageFlipH) transformParts.push("scaleX(-1)");
          if (component.imageFlipV) transformParts.push("scaleY(-1)");
          const transformStr = transformParts.length > 0 ? transformParts.join(" ") : "";
          
          let imageStyle = "";
          if (hasCrop) {
            const scaleX = 100 / (component.imageCropWidth ?? 100);
            const scaleY = 100 / (component.imageCropHeight ?? 100);
            const translateX = -(component.imageCropX ?? 0) * scaleX;
            const translateY = -(component.imageCropY ?? 0) * scaleY;
            
            const cropTransform = `translate(${translateX}%, ${translateY}%) scale(${scaleX}, ${scaleY})`;
            const extraTransform = transformStr ? ` ${transformStr}` : "";
            
            imageStyle = `display: block; width: 100%; height: 100%; object-fit: none; object-position: 0% 0%; opacity: ${imageOpacity}; transform: ${cropTransform}${extraTransform}; transform-origin: 0% 0%;`;
          } else {
            imageStyle = `display: block; width: 100%; height: 100%; object-fit: ${objectFit}; opacity: ${imageOpacity};${transformStr ? ` transform: ${transformStr};` : ""}`;
          }

          let captionHtml = "";
          if (component.imageCaption) {
            captionHtml = `<div style="font-size: ${component.imageCaptionFontSize || 12}px; color: ${component.imageCaptionColor || "#666666"}; text-align: ${component.imageCaptionAlign || "center"}; padding: 4px 8px; line-height: 1.4;">${component.imageCaption}</div>`;
          }

          const topCaption = component.imageCaptionPosition === "top" ? captionHtml : "";
          const bottomCaption = component.imageCaptionPosition !== "top" ? captionHtml : "";

          content = `
            <div style="display: flex; flex-direction: column; width: 100%; height: 100%; border-radius: ${imageBorderRadius}px; overflow: hidden;">
              ${topCaption}
              <div style="min-height: 0; flex: 1; overflow: hidden;">
                <img src="${imageUrl}" alt="${component.imageAlt || "이미지"}" style="${imageStyle}" />
              </div>
              ${bottomCaption}
            </div>
          `;
        }

        // Divider 컴포넌트
        else if (component.type === "divider") {
          const width = component.orientation === "horizontal" ? "100%" : `${component.lineWidth || 1}px`;
          const height = component.orientation === "vertical" ? "100%" : `${component.lineWidth || 1}px`;
          content = `<div style="width: ${width}; height: ${height}; background-color: ${component.lineColor || "#000000"};"></div>`;
        }

        // Signature 컴포넌트
        else if (component.type === "signature") {
          const labelPosition = component.labelPosition || "left";
          const showLabel = component.showLabel !== false;
          const labelText = component.labelText || "서명:";
          const imageUrl = component.imageUrl
            ? component.imageUrl.startsWith("data:")
              ? component.imageUrl
              : getFullImageUrl(component.imageUrl)
            : "";

          if (labelPosition === "left" || labelPosition === "right") {
            content = `
              <div style="display: flex; align-items: center; flex-direction: ${labelPosition === "right" ? "row-reverse" : "row"}; gap: 8px; height: 100%;">
                ${showLabel ? `<div style="font-size: 12px; white-space: nowrap;">${labelText}</div>` : ""}
                <div style="flex: 1; position: relative;">
                  ${imageUrl ? `<img src="${imageUrl}" style="width: 100%; height: 100%; object-fit: ${component.objectFit || "contain"};" />` : ""}
                </div>
              </div>`;
          } else {
            content = `
              <div style="display: flex; flex-direction: column; align-items: center; height: 100%;">
                ${showLabel && labelPosition === "top" ? `<div style="font-size: 12px;">${labelText}</div>` : ""}
                <div style="flex: 1; width: 100%; position: relative;">
                  ${imageUrl ? `<img src="${imageUrl}" style="width: 100%; height: 100%; object-fit: ${component.objectFit || "contain"};" />` : ""}
                </div>
                ${showLabel && labelPosition === "bottom" ? `<div style="font-size: 12px;">${labelText}</div>` : ""}
              </div>`;
          }
        }

        // Stamp 컴포넌트
        else if (component.type === "stamp") {
          const showLabel = component.showLabel !== false;
          const labelText = component.labelText || "(인)";
          const personName = component.personName || "";
          const imageUrl = component.imageUrl
            ? component.imageUrl.startsWith("data:")
              ? component.imageUrl
              : getFullImageUrl(component.imageUrl)
            : "";

          content = `
            <div style="display: flex; align-items: center; gap: 8px; width: 100%; height: 100%;">
              ${personName ? `<div style="font-size: 12px; white-space: nowrap;">${personName}</div>` : ""}
              <div style="position: relative; flex: 1; height: 100%;">
                ${imageUrl ? `<img src="${imageUrl}" style="width: 100%; height: 100%; object-fit: ${component.objectFit || "contain"}; border-radius: 50%;" />` : ""}
                ${showLabel ? `<div style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 12px; font-weight: bold; color: #dc2626;">${labelText}</div>` : ""}
              </div>
            </div>`;
        }

        // PageNumber 컴포넌트
        else if (component.type === "pageNumber") {
          const format = component.pageNumberFormat || "number";
          let pageNumberText = "";
          switch (format) {
            case "number":
              pageNumberText = `${pageIndex + 1}`;
              break;
            case "numberTotal":
              pageNumberText = `${pageIndex + 1} / ${totalPages}`;
              break;
            case "koreanNumber":
              pageNumberText = `${pageIndex + 1} 페이지`;
              break;
            default:
              pageNumberText = `${pageIndex + 1}`;
          }
          content = `<div style="display: flex; align-items: center; justify-content: center; height: 100%; font-size: ${component.fontSize}px; color: ${component.fontColor}; font-weight: ${component.fontWeight}; text-align: ${component.textAlign};">${pageNumberText}</div>`;
        }

        // Card 컴포넌트
        else if (component.type === "card") {
          const cardTitle = component.cardTitle || "정보 카드";
          const cardItems = component.cardItems || [];
          const labelWidth = component.labelWidth || 80;
          const showCardTitle = component.showCardTitle !== false;
          const titleFontSize = component.titleFontSize || 14;
          const labelFontSize = component.labelFontSize || 13;
          const valueFontSize = component.valueFontSize || 13;
          const titleColor = component.titleColor || "#1e40af";
          const labelColor = component.labelColor || "#374151";
          const valueColor = component.valueColor || "#000000";
          const borderColor = component.borderColor || "#e5e7eb";

          // 쿼리 바인딩된 값 가져오기
          const getCardValue = (item: { label: string; value: string; fieldName?: string }) => {
            if (item.fieldName && queryResult && queryResult.rows && queryResult.rows.length > 0) {
              const row = queryResult.rows[0];
              return row[item.fieldName] !== undefined ? String(row[item.fieldName]) : item.value;
            }
            return item.value;
          };

          const itemsHtml = cardItems
            .map(
              (item: { label: string; value: string; fieldName?: string }) => `
              <div style="display: flex; padding: 2px 0;">
                <span style="width: ${labelWidth}px; flex-shrink: 0; font-size: ${labelFontSize}px; color: ${labelColor}; font-weight: 500;">${item.label}</span>
                <span style="flex: 1; font-size: ${valueFontSize}px; color: ${valueColor};">${getCardValue(item)}</span>
              </div>
            `,
            )
            .join("");

          content = `
            <div style="display: flex; flex-direction: column; height: 100%; overflow: visible;">
              ${
                showCardTitle
                  ? `
                <div style="flex-shrink: 0; padding: 4px 8px; font-size: ${titleFontSize}px; font-weight: 600; color: ${titleColor};">
                  ${cardTitle}
                </div>
                <div style="flex-shrink: 0; margin: 0 4px; border-bottom: 1px solid ${borderColor};"></div>
              `
                  : ""
              }
              <div style="flex: 1; padding: 4px 8px; overflow: visible;">
                ${itemsHtml}
              </div>
            </div>`;
        }

        // 계산 컴포넌트
        else if (component.type === "calculation") {
          const calcItems = component.calcItems || [];
          const resultLabel = component.resultLabel || "합계";
          const calcLabelWidth = component.labelWidth || 120;
          const calcLabelFontSize = component.labelFontSize || 13;
          const calcValueFontSize = component.valueFontSize || 13;
          const calcResultFontSize = component.resultFontSize || 16;
          const calcLabelColor = component.labelColor || "#374151";
          const calcValueColor = component.valueColor || "#000000";
          const calcResultColor = component.resultColor || "#2563eb";
          const numberFormat = component.numberFormat || "currency";
          const currencySuffix = component.currencySuffix || "원";
          const borderColor = component.borderColor || "#374151";

          // 숫자 포맷팅 함수
          const formatNumber = (num: number): string => {
            if (numberFormat === "none") return String(num);
            if (numberFormat === "comma") return num.toLocaleString();
            if (numberFormat === "currency") return num.toLocaleString() + currencySuffix;
            return String(num);
          };

          // 쿼리 바인딩된 값 가져오기
          const getCalcItemValue = (item: {
            label: string;
            value: number | string;
            operator: string;
            fieldName?: string;
          }): number => {
            if (item.fieldName && queryResult && queryResult.rows && queryResult.rows.length > 0) {
              const row = queryResult.rows[0];
              const val = row[item.fieldName];
              return typeof val === "number" ? val : parseFloat(String(val)) || 0;
            }
            return typeof item.value === "number" ? item.value : parseFloat(String(item.value)) || 0;
          };

          // 계산 결과 (첫 번째 항목은 기준값, 두 번째부터 연산자 적용)
          let calcResult = 0;
          if (calcItems.length > 0) {
            // 첫 번째 항목은 기준값
            calcResult = getCalcItemValue(
              calcItems[0] as { label: string; value: number | string; operator: string; fieldName?: string },
            );

            // 두 번째 항목부터 연산자 적용
            for (let i = 1; i < calcItems.length; i++) {
              const item = calcItems[i];
              const val = getCalcItemValue(
                item as { label: string; value: number | string; operator: string; fieldName?: string },
              );
              switch ((item as { operator: string }).operator) {
                case "+":
                  calcResult += val;
                  break;
                case "-":
                  calcResult -= val;
                  break;
                case "x":
                  calcResult *= val;
                  break;
                case "÷":
                  calcResult = val !== 0 ? calcResult / val : calcResult;
                  break;
              }
            }
          }

          const itemsHtml = calcItems
            .map((item: { label: string; value: number | string; operator: string; fieldName?: string }) => {
              const itemValue = getCalcItemValue(item);
              return `
                <div style="display: flex; justify-content: space-between; padding: 4px 8px;">
                  <span style="width: ${calcLabelWidth}px; font-size: ${calcLabelFontSize}px; color: ${calcLabelColor};">${item.label}</span>
                  <span style="font-size: ${calcValueFontSize}px; color: ${calcValueColor}; text-align: right;">${formatNumber(itemValue)}</span>
                </div>
              `;
            })
            .join("");

          content = `
            <div style="display: flex; flex-direction: column; height: 100%;">
              <div style="flex: 1;">
                ${itemsHtml}
              </div>
              <div style="border-top: 1px solid ${borderColor}; margin: 4px 8px;"></div>
              <div style="display: flex; justify-content: space-between; padding: 4px 8px;">
                <span style="width: ${calcLabelWidth}px; font-size: ${calcResultFontSize}px; font-weight: 600; color: ${calcLabelColor};">${resultLabel}</span>
                <span style="font-size: ${calcResultFontSize}px; font-weight: 700; color: ${calcResultColor}; text-align: right;">${formatNumber(calcResult)}</span>
              </div>
            </div>`;
        }

        // 바코드/QR코드 컴포넌트 (인쇄용 - base64 이미지 사용)
        else if (component.type === "barcode") {
          // 바코드 이미지는 미리 생성된 base64 사용 (handlePrint에서 생성)
          const barcodeImage = (component as any).barcodeImageBase64;
          if (barcodeImage) {
            content = `<img src="${barcodeImage}" style="max-width: 100%; max-height: 100%; object-fit: contain;" />`;
          } else {
            content = `<div style="display: flex; align-items: center; justify-content: center; height: 100%; color: #666; font-size: 12px;">바코드</div>`;
          }
        }

        // 체크박스 컴포넌트 (인쇄용)
        else if (component.type === "checkbox") {
          const checkboxSize = component.checkboxSize || 18;
          const checkboxColor = component.checkboxColor || "#2563eb";
          const checkboxBorderColor = component.checkboxBorderColor || "#6b7280";
          const checkboxLabel = component.checkboxLabel || "";
          const checkboxLabelPosition = component.checkboxLabelPosition || "right";

          // 체크 상태 결정
          let isChecked = component.checkboxChecked === true;
          if (component.checkboxFieldName && queryResult && queryResult.rows && queryResult.rows.length > 0) {
            const val = queryResult.rows[0][component.checkboxFieldName];
            isChecked = val === true || val === "Y" || val === "1" || val === 1 || val === "true";
          }

          const checkboxHTML = `
            <div style="width: ${checkboxSize}px; height: ${checkboxSize}px; border: 2px solid ${isChecked ? checkboxColor : checkboxBorderColor}; border-radius: 2px; background-color: ${isChecked ? checkboxColor : "transparent"}; display: flex; align-items: center; justify-content: center;">
              ${isChecked ? `<svg viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" style="width: ${checkboxSize * 0.7}px; height: ${checkboxSize * 0.7}px;"><polyline points="20 6 9 17 4 12" /></svg>` : ""}
            </div>
          `;

          content = `
            <div style="display: flex; align-items: center; gap: 8px; height: 100%; flex-direction: ${checkboxLabelPosition === "left" ? "row-reverse" : "row"}; ${checkboxLabelPosition === "left" ? "justify-content: flex-end;" : ""}">
              ${checkboxHTML}
              ${checkboxLabel ? `<span style="font-size: 12px;">${checkboxLabel}</span>` : ""}
            </div>
          `;
        }

        // Table 컴포넌트 — 그리드 양식 모드
        else if (component.type === "table" && component.gridMode && component.gridCells) {
          const gridCells = component.gridCells;
          const gridRowCount = component.gridRowCount ?? 0;
          const gridColCount = component.gridColCount ?? 0;
          const gridColWidths = component.gridColWidths ?? [];
          const gridRowHeights = component.gridRowHeights ?? [];
          const dataRow = queryResult?.rows?.[0] as Record<string, unknown> | undefined;

          const findCell = (r: number, c: number) => gridCells.find((gc: any) => gc.row === r && gc.col === c);
          const totalW = gridColWidths.reduce((a: number, b: number) => a + b, 0);

          let gridRows = "";
          for (let r = 0; r < gridRowCount; r++) {
            let tds = "";
            for (let c = 0; c < gridColCount; c++) {
              const cell = findCell(r, c);
              if (!cell || cell.merged) continue;
              const rSpan = cell.rowSpan ?? 1;
              const cSpan = cell.colSpan ?? 1;
              const w = gridColWidths.slice(c, c + cSpan).reduce((a: number, b: number) => a + b, 0);
              const h = gridRowHeights.slice(r, r + rSpan).reduce((a: number, b: number) => a + b, 0);
              const borderW = cell.borderStyle === "medium" ? 2 : cell.borderStyle === "thick" ? 3 : cell.borderStyle === "none" ? 0 : 1;

              let displayValue = cell.value ?? "";
              if (cell.cellType === "field" && cell.field && dataRow) {
                displayValue = String(dataRow[cell.field] ?? "");
              }

              tds += `<td${rSpan > 1 ? ` rowspan="${rSpan}"` : ""}${cSpan > 1 ? ` colspan="${cSpan}"` : ""} style="width:${w}px;height:${h}px;min-width:${w}px;background:${cell.backgroundColor || "white"};border:${borderW}px solid #d1d5db;padding:2px 4px;font-size:${cell.fontSize ?? 12}px;font-weight:${cell.fontWeight === "bold" ? 700 : 400};color:${cell.textColor || "#111827"};text-align:${cell.align || "center"};vertical-align:${cell.verticalAlign || "middle"};overflow:hidden;white-space:pre-line;word-break:break-word;">${displayValue}</td>`;
            }
            gridRows += `<tr>${tds}</tr>`;
          }

          const colgroup = gridColWidths.map((w: number) => `<col style="width:${w}px">`).join("");

          content = `
            <table style="width:${totalW}px;border-collapse:collapse;table-layout:fixed;">
              <colgroup>${colgroup}</colgroup>
              <tbody>${gridRows}</tbody>
            </table>`;
        }

        // Table 컴포넌트 — 기존 단순 테이블 모드
        else if (component.type === "table" && queryResult && queryResult.rows.length > 0) {
          const columns =
            component.tableColumns && component.tableColumns.length > 0
              ? component.tableColumns
              : queryResult.fields.map((field: string) => ({
                  field,
                  header: field,
                  align: "left" as const,
                  width: undefined,
                }));

          const tableRows = queryResult.rows
            .map(
              (row: Record<string, unknown>) => `
              <tr>
                ${columns.map((col: { field: string; align?: string }) => `<td style="border: ${component.showBorder !== false ? "1px solid #d1d5db" : "none"}; padding: 6px 8px; text-align: ${col.align || "left"}; height: ${component.rowHeight || "auto"}px;">${String(row[col.field] ?? "")}</td>`).join("")}
              </tr>
            `,
            )
            .join("");

          content = `
            <table style="width: 100%; border-collapse: ${component.showBorder !== false ? "collapse" : "separate"}; font-size: 12px;">
              <thead style="display: table-header-group; break-inside: avoid; break-after: avoid;">
                <tr style="background-color: ${component.headerBackgroundColor || "#f3f4f6"}; color: ${component.headerTextColor || "#111827"};">
                  ${columns.map((col: { header: string; align?: string; width?: number }) => `<th style="border: ${component.showBorder !== false ? "1px solid #d1d5db" : "none"}; padding: 6px 8px; text-align: ${col.align || "left"}; width: ${col.width ? `${col.width}px` : "auto"}; font-weight: 600;">${col.header}</th>`).join("")}
                </tr>
              </thead>
              <tbody>
                ${tableRows}
              </tbody>
            </table>`;
        }

        // 컴포넌트 값은 px로 저장됨 (캔버스는 pageWidth * MM_TO_PX px)
        // 인쇄용 mm 단위로 변환: px / MM_TO_PX = mm
        const xMm = component.x / MM_TO_PX;
        const yMm = component.y / MM_TO_PX;
        const widthMm = component.width / MM_TO_PX;
        const heightMm = component.height / MM_TO_PX;

        const isDividerComp = component.type === "divider";
        const printPadding = isDividerComp
          ? "0"
          : component.padding != null
            ? typeof component.padding === "number"
              ? `${component.padding}px`
              : component.padding
            : "8px";

        return `
          <div style="position: absolute; left: ${xMm}mm; top: ${yMm}mm; width: ${widthMm}mm; height: ${heightMm}mm; padding: ${printPadding}; background-color: ${component.backgroundColor || "transparent"}; border: ${component.borderWidth ? `${component.borderWidth}px solid ${component.borderColor}` : "none"}; border-radius: ${component.borderRadius ? `${component.borderRadius}px` : "0"}; box-sizing: border-box; overflow: hidden;">
            ${content}
          </div>`;
      })
      .join("");

    const watermarkHTML = generateWatermarkHTML(watermark, pageWidth, pageHeight);

    const pageNumberHTML = `
      <div style="position: absolute; right: 8mm; bottom: 6mm; font-size: 9px; color: #6b7280; font-family: 'Malgun Gothic', sans-serif;">
        ${pageIndex + 1}
      </div>`;

    return `
      <div class="print-page" style="position: relative; width: ${pageWidth}mm; min-height: ${pageHeight}mm; background-color: ${backgroundColor};">
        ${watermarkHTML}
        ${componentsHTML}
        ${pageNumberHTML}
      </div>`;
  };

  // 모든 페이지 HTML 생성 (인쇄/PDF용)
  const generatePrintHTML = (pagesWithBarcodes?: any[]): string => {
    const pages = pagesWithBarcodes || layoutConfig.pages;
    const sortedPages = pages.sort((a, b) => a.page_order - b.page_order);
    const totalPages = sortedPages.length;

    const pagesHTML = sortedPages
      .map((page, pageIndex) =>
        generatePageHTML(
          Array.isArray(page.components) ? page.components : [],
          page.width,
          page.height,
          page.background_color,
          pageIndex,
          totalPages,
          layoutConfig.watermark, // 전체 페이지 공유 워터마크
        ),
      )
      .join('<div style="page-break-after: always;"></div>');

    return `
      <html>
        <head>
          <meta charset="UTF-8">
          <title>리포트 인쇄</title>
          <style>
            * { box-sizing: border-box; margin: 0; padding: 0; }
            @page {
              size: A4;
              margin: 0;
            }
            @media print {
              html, body { width: 210mm; height: 297mm; }
              .print-page { page-break-after: always; page-break-inside: avoid; }
              .print-page:last-child { page-break-after: auto; }
            }
            body {
              font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
              -webkit-print-color-adjust: exact;
              print-color-adjust: exact;
            }
          </style>
        </head>
        <body>
          ${pagesHTML}
          <script>
            window.onload = function() {
              // 이미지 로드 대기 후 인쇄
              const images = document.getElementsByTagName('img');
              if (images.length === 0) {
                setTimeout(() => window.print(), 100);
              } else {
                let loadedCount = 0;
                Array.from(images).forEach(img => {
                  if (img.complete) {
                    loadedCount++;
                  } else {
                    img.onload = () => {
                      loadedCount++;
                      if (loadedCount === images.length) {
                        setTimeout(() => window.print(), 100);
                      }
                    };
                  }
                });
                if (loadedCount === images.length) {
                  setTimeout(() => window.print(), 100);
                }
              }
            }
          </script>
        </body>
      </html>`;
  };

  // PDF 직접 다운로드 (html2canvas + jsPDF)
  const handleDownloadPDF = async () => {
    const sortedPages = [...layoutConfig.pages].sort((a, b) => a.page_order - b.page_order);
    if (sortedPages.length === 0) {
      toast({ title: "오류", description: "페이지가 없습니다.", variant: "destructive" });
      return;
    }

    setIsExporting(true);
    try {
      const [{ jsPDF }, html2canvas] = await Promise.all([
        import("jspdf"),
        import("html2canvas").then((m) => m.default),
      ]);

      const pageElements = previewPagesRef.current?.querySelectorAll("[data-preview-page]");
      if (!pageElements || pageElements.length === 0) {
        toast({ title: "오류", description: "미리보기 요소를 찾을 수 없습니다.", variant: "destructive" });
        return;
      }

      const firstPage = sortedPages[0];
      const doc = new jsPDF({
        orientation: firstPage.orientation === "landscape" ? "l" : "p",
        unit: "mm",
        format: [firstPage.width, firstPage.height],
      });

      for (let i = 0; i < sortedPages.length; i++) {
        const pageConfig = sortedPages[i];
        const pageEl = pageElements[i] as HTMLElement;
        if (!pageEl) continue;

        const canvas = await html2canvas(pageEl, {
          scale: 2,
          useCORS: true,
          allowTaint: true,
          backgroundColor: pageConfig.background_color || "#ffffff",
        });

        const imgData = canvas.toDataURL("image/jpeg", 0.95);

        if (i > 0) {
          doc.addPage([pageConfig.width, pageConfig.height], pageConfig.orientation === "landscape" ? "l" : "p");
        }

        doc.addImage(imgData, "JPEG", 0, 0, pageConfig.width, pageConfig.height);
      }

      const fileName = reportDetail?.report?.report_name_kor
        ? `${reportDetail.report.report_name_kor}.pdf`
        : `report_${Date.now()}.pdf`;
      doc.save(fileName);

      toast({ title: "성공", description: "PDF가 다운로드되었습니다." });
    } catch (error) {
      console.error("PDF 생성 오류:", error);
      toast({ title: "오류", description: "PDF 생성에 실패했습니다.", variant: "destructive" });
    } finally {
      setIsExporting(false);
    }
  };

  // 이미지 URL을 Base64로 변환
  const imageUrlToBase64 = async (url: string): Promise<string> => {
    try {
      // 이미 Base64인 경우 그대로 반환
      if (url.startsWith("data:")) {
        return url;
      }

      // 서버 이미지 URL을 fetch하여 Base64로 변환
      const fullUrl = getFullImageUrl(url);
      const response = await fetch(fullUrl);
      const blob = await response.blob();

      return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onloadend = () => resolve(reader.result as string);
        reader.onerror = reject;
        reader.readAsDataURL(blob);
      });
    } catch (error) {
      console.error("이미지 변환 실패:", error);
      return "";
    }
  };

  // WORD 다운로드 (백엔드 API 사용 - 컴포넌트 데이터 전송)
  const handleDownloadWord = async () => {
    setIsExporting(true);
    try {
      toast({
        title: "처리 중",
        description: "WORD 파일을 생성하고 있습니다...",
      });

      // 이미지 및 바코드를 Base64로 변환하여 컴포넌트 데이터에 포함
      const pagesWithBase64 = await Promise.all(
        layoutConfig.pages.map(async (page) => {
          const componentsWithBase64 = await Promise.all(
            (Array.isArray(page.components) ? page.components : []).map(async (component) => {
              // 이미지가 있는 컴포넌트는 Base64로 변환
              if (component.imageUrl) {
                try {
                  const base64 = await imageUrlToBase64(component.imageUrl);
                  return { ...component, imageBase64: base64 };
                } catch {
                  return component;
                }
              }
              // 바코드/QR코드 컴포넌트는 이미지로 변환
              if (component.type === "barcode") {
                try {
                  const barcodeImage = await generateBarcodeImage(component);
                  return { ...component, barcodeImageBase64: barcodeImage };
                } catch {
                  return component;
                }
              }
              return component;
            }),
          );
          return { ...page, components: componentsWithBase64 };
        }),
      );

      // 쿼리 결과 수집
      const queryResults: Record<string, { fields: string[]; rows: Record<string, unknown>[] }> = {};
      for (const page of layoutConfig.pages) {
        const pageComponents = Array.isArray(page.components) ? page.components : [];
        for (const component of pageComponents) {
          if (component.queryId) {
            const result = getQueryResult(component.queryId);
            if (result) {
              queryResults[component.queryId] = result;
            }
          }
        }
      }

      const fileName = reportDetail?.report?.report_name_kor || "리포트";

      // 백엔드 API 호출 (컴포넌트 데이터 전송)
      const { apiClient } = await import("@/lib/api/client");
      const response = await apiClient.post(
        "/admin/reports/export-word",
        {
          layoutConfig: { ...layoutConfig, pages: pagesWithBase64 },
          queryResults,
          fileName,
        },
        { responseType: "blob" },
      );

      // Blob 다운로드
      const blob = new Blob([response.data], {
        type: "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
      });
      const _rpd = new Date();
      const timestamp = `${_rpd.getFullYear()}-${String(_rpd.getMonth() + 1).padStart(2, "0")}-${String(_rpd.getDate()).padStart(2, "0")}`;
      const url = window.URL.createObjectURL(blob);
      const link = document.createElement("a");
      link.href = url;
      link.download = `${fileName}_${timestamp}.docx`;
      link.click();
      window.URL.revokeObjectURL(url);

      toast({
        title: "성공",
        description: "WORD 파일이 다운로드되었습니다.",
      });
    } catch (error) {
      console.error("WORD 변환 오류:", error);
      const errorMessage = error instanceof Error ? error.message : "WORD 생성에 실패했습니다.";
      toast({
        title: "오류",
        description: errorMessage,
        variant: "destructive",
      });
    } finally {
      setIsExporting(false);
    }
  };

  const sortedPages = [...layoutConfig.pages].sort((a, b) => a.page_order - b.page_order);

  return (
    <Dialog open={isOpen} onOpenChange={onClose}>
      <DialogContent className="flex h-[92vh] max-w-[95vw] flex-col gap-0 p-0 sm:max-w-5xl">
        <DialogHeader className="shrink-0 border-b px-6 py-4">
          <DialogTitle>미리보기</DialogTitle>
          <DialogDescription>
            현재 레이아웃의 미리보기입니다. 인쇄하거나 파일로 다운로드할 수 있습니다.
          </DialogDescription>
        </DialogHeader>

        {/* 미리보기 영역 - 스케일 적용하여 A4 전체 표시 */}
        <div className="flex-1 overflow-auto rounded-none bg-gray-200 p-6">
          {isLoadingQueries && (
            <div className="mb-3 flex items-center justify-center gap-2 rounded bg-blue-50 px-4 py-2 text-sm text-blue-700">
              <Loader2 className="h-4 w-4 animate-spin" />
              쿼리 데이터를 불러오는 중...
            </div>
          )}
          <div className="space-y-6" ref={previewPagesRef}>
            {sortedPages.map((page, pageIdx) => {
              const pw = page.width * MM_TO_PX;
              const ph = page.height * MM_TO_PX;
              return (
                <div key={page.page_id} className="flex justify-center">
                  <div
                    className="origin-top"
                    style={{
                      width: `${pw}px`,
                      height: `${ph}px`,
                    }}
                  >
                    {/* 페이지 컨텐츠 */}
                    <div
                      data-preview-page={page.page_id}
                      className="relative overflow-hidden shadow-lg"
                      style={{
                        width: `${pw}px`,
                        minHeight: `${ph}px`,
                        backgroundColor: page.background_color,
                      }}
                    >
                      {/* 워터마크 렌더링 (전체 페이지 공유) */}
                      {layoutConfig.watermark?.enabled && (
                        <WatermarkLayer
                          watermark={layoutConfig.watermark}
                          width={page.width * MM_TO_PX}
                          height={page.height * MM_TO_PX}
                        />
                      )}
                      {(Array.isArray(page.components) ? page.components : []).map((component) => {
                        const isGrid = component.gridMode === true;
                        const condRule = isGrid ? component.gridConditionalRule : component.conditionalRule;
                        const condRules = isGrid ? component.gridConditionalRules : component.conditionalRules;
                        if (!evaluateConditionalRule(condRule, getQueryResult, condRules))
                          return null;

                        const displayValue = getComponentValue(component);
                        const queryResult = component.queryId ? getQueryResult(component.queryId) : null;

                        const isDivider = component.type === "divider";
                        return (
                          <div
                            key={component.id}
                            className="absolute"
                            style={{
                              left: `${component.x}px`,
                              top: `${component.y}px`,
                              width: `${component.width}px`,
                              height: `${component.height}px`,
                              backgroundColor: component.backgroundColor,
                              border: component.borderWidth
                                ? `${component.borderWidth}px solid ${component.borderColor}`
                                : "none",
                              borderRadius: component.borderRadius ? `${component.borderRadius}px` : undefined,
                              padding: isDivider
                                ? 0
                                : component.padding != null
                                  ? typeof component.padding === "number"
                                    ? `${component.padding}px`
                                    : component.padding
                                  : "8px",
                              overflow: "hidden",
                              boxSizing: "border-box",
                            }}
                          >
                            {(component.type === "text" || component.type === "label") && (
                              <TextRenderer component={component} displayValue={displayValue} getQueryResult={getQueryResult} />
                            )}

                            {/* 그리드 양식 모드 테이블 */}
                            {component.type === "table" && (
                              <TableRenderer component={component} getQueryResult={getQueryResult} />
                            )}

                            {component.type === "image" && <ImageRenderer component={component} />}

                            {component.type === "divider" && <DividerRenderer component={component} />}

                            {component.type === "signature" && <SignatureRenderer component={component} />}

                            {component.type === "stamp" && <StampRenderer component={component} />}

                            {component.type === "pageNumber" && (
                              <PageNumberRenderer
                                component={component}
                                currentPageId={page.page_id}
                                layoutConfig={layoutConfig}
                              />
                            )}

                            {/* Card 컴포넌트 */}
                            {component.type === "card" && (
                              <CardRenderer component={component} getQueryResult={getQueryResult} />
                            )}

                            {/* 계산 컴포넌트 */}
                            {component.type === "calculation" && (
                              <CalculationRenderer component={component} getQueryResult={getQueryResult} />
                            )}

                            {/* 바코드/QR코드 컴포넌트 */}
                            {component.type === "barcode" && (
                              <BarcodeCanvasRenderer component={component} getQueryResult={getQueryResult} />
                            )}

                            {/* 체크박스 컴포넌트 */}
                            {component.type === "checkbox" && (
                              <CheckboxRenderer component={component} getQueryResult={getQueryResult} />
                            )}
                          </div>
                        );
                      })}

                      {/* 자동 페이지 번호 (우측 하단) */}
                      <div
                        className="absolute"
                        style={{
                          right: "32px",
                          bottom: "24px",
                          fontSize: "11px",
                          color: "#6b7280",
                          fontFamily: "Malgun Gothic, sans-serif",
                        }}
                      >
                        {pageIdx + 1}
                      </div>
                    </div>
                  </div>
                </div>
              );
            })}
          </div>
        </div>

        <DialogFooter className="shrink-0 border-t px-6 py-3">
          <Button variant="outline" onClick={onClose} disabled={isExporting}>
            닫기
          </Button>
          <Button variant="outline" onClick={handlePrint} disabled={isExporting} className="gap-2">
            <Printer className="h-4 w-4" />
            인쇄
          </Button>
          <Button onClick={handleDownloadPDF} className="gap-2">
            <FileDown className="h-4 w-4" />
            PDF
          </Button>
          <Button onClick={handleDownloadWord} disabled={isExporting} variant="secondary" className="gap-2">
            <FileText className="h-4 w-4" />
            {isExporting ? "생성 중..." : "WORD"}
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}
