package cn.net.connor.plm.util;

import java.io.FileOutputStream;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;

import cn.net.connor.plm.entity.Prop;

public class ExcelWriteTable2 {
	public static void generateFromTemplateStructure(String outputPath, List<Prop> props) throws Exception {
		try (Workbook workbook = new HSSFWorkbook()) {
			Sheet sheet = workbook.createSheet("sheet1");

			// ====================== 创建固定表头 ======================
			createHeader(workbook, sheet);

			// ====================== 创建数据区域 ======================
			int rowNum = 2; // 数据起始行（第三行）

			for (int i = 0; i < props.size(); i++) {
				Prop prop = props.get(i);

				// 创建四行数据（合并行）
				Row row1 = sheet.createRow(rowNum++);
				Row row2 = sheet.createRow(rowNum++);
				Row row3 = sheet.createRow(rowNum++);
				Row row4 = sheet.createRow(rowNum++);

				// 设置行高为 16.8 磅（336 单位）
				row1.setHeight((short) 336);
				row2.setHeight((short) 336);
				row3.setHeight((short) 336);
				row4.setHeight((short) 336);

				// 设置行高为 16.8 磅（336 单位）
				row1.setHeight((short) 336);
				row2.setHeight((short) 336);

				// ====================== 填充动态数据 ======================
				fillDynamicData(workbook, row1, prop, i + 1);
				setRow2Style(workbook, row2);
				setRow2Style(workbook, row3);
				setRow2Style(workbook, row4);

				// ====================== 创建固定模板内容 ======================
				createFixedContent(workbook, row1, row2, row3, row4);

				// ====================== 设置合并区域 ======================
				addMergedRegions(sheet, row1, row2, row3, row4);
			}

			// ====================== 自动调整列宽 ======================
			autoSizeColumns(sheet);

			// 保存文件
			try (FileOutputStream fos = new FileOutputStream(outputPath)) {
				workbook.write(fos);
			}
		}
	}

	private static void setRow2Style(Workbook workbook, Row row2) {
		CellStyle dataStyle = createDataStyle(workbook);
		for (int i = 0; i < 8; i++) {
			Cell cell = row2.createCell(i);
			cell.setCellStyle(dataStyle);
		}
		for (int i = 14; i < 18; i++) {
			Cell cell = row2.createCell(i);
			cell.setCellStyle(dataStyle);
		}
	}

	private static void createHeader(Workbook workbook, Sheet sheet) {
		// 第一行标题
		Row titleRow = sheet.createRow(0);
		titleRow.setHeight((short) 436);
		Cell titleCell = titleRow.createCell(0);
		titleCell.setCellValue(
				"\u6280\u672F/\u5DE5\u827A\u3010\u53D8\u66F4\u3011\u53D1\u653E\u3001\u56DE\u6536\u8BB0\u5F55\u8868");
		sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 17));
		// 创建带实线边框的标题样式
		CellStyle headerStyle = workbook.createCellStyle();
		Font titleFont = workbook.createFont();
		titleFont.setBold(true);
		titleFont.setFontHeightInPoints((short) 14);
		headerStyle.setFont(titleFont);
		headerStyle.setAlignment(HorizontalAlignment.CENTER);
		headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
		// 设置实线边框
		headerStyle.setBorderTop(BorderStyle.THIN);
		headerStyle.setBorderBottom(BorderStyle.THIN);
		headerStyle.setBorderLeft(BorderStyle.THIN);
		headerStyle.setBorderRight(BorderStyle.THIN);
		// 应用样式到合并后的标题单元格
		titleCell.setCellStyle(headerStyle);

		// 单独创建第二行表头的样式
		CellStyle secondHeaderStyle = workbook.createCellStyle();
		Font secondHeaderFont = workbook.createFont();
		secondHeaderFont.setBold(true);
		secondHeaderFont.setFontHeightInPoints((short) 10);
		secondHeaderStyle.setFont(secondHeaderFont);
		secondHeaderStyle.setAlignment(HorizontalAlignment.CENTER);
		secondHeaderStyle.setVerticalAlignment(VerticalAlignment.CENTER);
		secondHeaderStyle.setWrapText(true); // 允许换行

		// 设置实线边框
		secondHeaderStyle.setBorderTop(BorderStyle.THIN);
		secondHeaderStyle.setBorderBottom(BorderStyle.THIN);
		secondHeaderStyle.setBorderLeft(BorderStyle.THIN);
		secondHeaderStyle.setBorderRight(BorderStyle.THIN);

		// 第二行表头
		Row headerRow = sheet.createRow(1);
		headerRow.setHeight((short) 556);
		String[] headers = { "\u5E8F\u53F7", "\u6587\u4EF6\u540D\u79F0", "\u4EA7\u54C1/\u96F6\u90E8\u4EF6\u540D\u79F0",
				"\u4EA7\u54C1/\u96F6\u90E8\u4EF6\u56FE\u53F7", "\u540C\u65F6\u4E0B\u53D1\u56FE\u7EB8",
				"\u56FE\u7EB8\u72B6\u6001/\u7248\u672C", "\u7F16\u5236\u4EBA", "\u9875\u6570",
				"\u2714 \u7B7E\u6536\u90E8\u95E8", "", "", "", "", "", "\u7B7E\u6536\u65E5\u671F",
				"\u6587\u4EF6\u7F16\u53F7", "\u5907\u6CE8", "" };

		for (int i = 0; i < headers.length; i++) {
			Cell cell = headerRow.createCell(i);
			cell.setCellValue(headers[i]);
			cell.setCellStyle(secondHeaderStyle);
		}

		sheet.addMergedRegion(new CellRangeAddress(1, 1, 8, 13));
		sheet.addMergedRegion(new CellRangeAddress(1, 1, 16, 17));
	}

	private static void fillDynamicData(Workbook workbook, Row row, Prop prop, int serialNumber) {
		CellStyle dataStyle = createDataStyle(workbook);

		// 序号（A列）
		createStyledCell(row, 0, String.valueOf(serialNumber), dataStyle);

		// 动态字段
		createStyledCell(row, 1, prop.getFileName(), dataStyle);
		createStyledCell(row, 2, prop.getProductName(), dataStyle);
		createStyledCell(row, 3, prop.getProductDrawingNum(), dataStyle);
		createStyledCell(row, 4, prop.getDrawingStatus(), dataStyle);
		createStyledCell(row, 5, prop.getDrawingRevision(), dataStyle);
		createStyledCell(row, 6, prop.getCompiler(), dataStyle);
		createStyledCell(row, 14, prop.getDrawingDate(), dataStyle); // O列
		createStyledCell(row, 15, prop.getRelationFileNo(), dataStyle); // P列
	}

	private static void createFixedContent(Workbook workbook, Row row1, Row row2, Row row3, Row row4) {
		CellStyle fixedStyle = createFixedStyle(workbook);
		CellStyle dataStyle = createDataStyle(workbook);
		// H列固定内容（合并单元格）
		createStyledCell(row1, 7, "1", dataStyle);

		// I-N列固定模板
		// I-N列固定模板（按行分配）
		String[][] fixedRows = { { "", "\u91C7\u8D2D\u90E8:", "", "PMC\u90E8:", "", "\u751F\u4EA7\u90E8:" },
				{ "", "\u5DE5\u827A\u90E8:", "", "\u8D28\u4FDD\u90E8\uFF1A", "", "SQE:" },
				{ "", "\u56FD\u96451\u90E8:", "", "\u56FD\u96452\u90E8:", "", "\u9500\u552E:" },
				{ "", "\u96F6\u552E:", "", "\u8BD5\u9A8C\u5BA4:", "", "\u7EFC\u7BA1:" } };
		int colIndex = 8; // I列开始
		for (int i = 0; i < fixedRows.length; i++) {
			Row currentRow = null;
			switch (i) {
			case 0:
				currentRow = row1;
				break;
			case 1:
				currentRow = row2;
				break;
			case 2:
				currentRow = row3;
				break;
			case 3:
				currentRow = row4;
				break;
			}

			if (currentRow != null) {
				for (int j = 0; j < fixedRows[i].length; j++) {
					createStyledCell(currentRow, colIndex + j, fixedRows[i][j], fixedStyle);
				}
			}
		}

		// Q-R列固定内容
		createStyledCell(row1, 16, "", dataStyle);
		createStyledCell(row1, 17, "", dataStyle);
	}

	private static void addMergedRegions(Sheet sheet, Row row1, Row row2, Row row3, Row row4) {
		int startRow = row1.getRowNum();
		int endRow = row4.getRowNum();

		// 合并 A-H 列（索引 0-7）
		for (int i = 0; i < 8; i++) {
			sheet.addMergedRegion(new CellRangeAddress(startRow, endRow, i, i));
		}

		// 合并 O-R 列（索引 14-15）
		for (int i = 14; i < 16; i++) {
			sheet.addMergedRegion(new CellRangeAddress(startRow, endRow, i, i));
		}

		sheet.addMergedRegion(new CellRangeAddress(startRow, endRow, 16, 17));
	}

	private static CellStyle createFixedStyle(Workbook workbook) {
		CellStyle style = workbook.createCellStyle();
		style.setBorderTop(BorderStyle.THIN);
		style.setBorderBottom(BorderStyle.THIN);
		style.setBorderLeft(BorderStyle.THIN);
		style.setBorderRight(BorderStyle.THIN);
		return style;
	}

	private static CellStyle createDataStyle(Workbook workbook) {
		CellStyle style = workbook.createCellStyle();
		Font dataFont = workbook.createFont();
		dataFont.setFontHeightInPoints((short) 10);
		style.setBorderTop(BorderStyle.THIN);
		style.setBorderBottom(BorderStyle.THIN);
		style.setBorderLeft(BorderStyle.THIN);
		style.setBorderRight(BorderStyle.THIN);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		style.setAlignment(HorizontalAlignment.CENTER);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		style.setFont(dataFont);
		return style;
	}

	private static void createStyledCell(Row row, int column, String value, CellStyle style) {
		Cell cell = row.createCell(column);
		cell.setCellValue(value);
		cell.setCellStyle(style);
	}

	private static void autoSizeColumns(Sheet sheet) {
		for (int i = 0; i < 18; i++) {
			if (i == 8 || i == 10 || i == 12) {
				sheet.setColumnWidth(i, 5 * 256);
			} else {
				sheet.setColumnWidth(i, 10 * 256);
			}
		}
	}
}