package com.zzg.web.controller.common;

import com.alibaba.excel.EasyExcelFactory;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.zzg.common.config.RuoYiConfig;
import com.zzg.common.constant.Constants;
import com.zzg.common.core.domain.AjaxResult;
import com.zzg.common.enums.HouseProductionTypeEnum;
import com.zzg.common.enums.HouseUsingTypeEnum;
import com.zzg.common.utils.StringUtils;
import com.zzg.common.utils.Threads;
import com.zzg.common.utils.file.FileUploadUtils;
import com.zzg.common.utils.file.FileUtils;
import com.zzg.framework.config.ServerConfig;
import com.zzg.system.convert.easyExcel.MultiDropdownWriteHandler;
import com.zzg.system.domain.SysCity;
import com.zzg.system.service.system.ISysCityService;
import com.zzg.web.core.enums.TemplateFileTypeEnum;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;
    @Autowired
    private ISysCityService sysCityService;
    @Value("${server.config}")
    String myServerConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    @GetMapping("/download/template")
    public void fileDownload(@RequestParam Integer fileType, HttpServletResponse response) {
        try {
            TemplateFileTypeEnum pathByFileType = TemplateFileTypeEnum.getEnumByFileType(fileType);
            Method generateExampleDataMethod = pathByFileType.getClazz().getMethod("generateExampleData");

            Object exampleData = generateExampleDataMethod.invoke(null);

            Object headerData;
            if (fileType.equals(TemplateFileTypeEnum.FILE_2.getFileType())) {
                headerData = generateHeaderData();
            } else {
                Method generateHeaderDataMethod = pathByFileType.getClazz().getMethod("generateHeaderData");
                headerData = generateHeaderDataMethod.invoke(null);
            }

            FileUtils.setExcelResponseHeader(response, pathByFileType.getFileName());
            ExcelWriterBuilder write = EasyExcelFactory.write(response.getOutputStream(), pathByFileType.getClazz());
            if (Objects.nonNull(headerData)) {
                write.registerWriteHandler((MultiDropdownWriteHandler) headerData);
            }
            write.sheet("sheet")
                    .doWrite(Collections.singletonList(exampleData));
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            Threads.sleep(1000);
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    public MultiDropdownWriteHandler generateHeaderData() {
        Map<Integer, String[]> dropdownOptionsMap = new HashMap<>();
        dropdownOptionsMap.put(0, Arrays.stream(HouseUsingTypeEnum.values())
                .map(HouseUsingTypeEnum::getText)
                .toArray(String[]::new));
        dropdownOptionsMap.put(10, Arrays.stream(HouseProductionTypeEnum.values())
                .map(HouseProductionTypeEnum::getText)
                .toArray(String[]::new));
        List<SysCity> towns = sysCityService.getTowns();
        dropdownOptionsMap.put(12, towns.stream().map(SysCity::getName).toArray(String[]::new));
        return new MultiDropdownWriteHandler(dropdownOptionsMap);
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = myServerConfig + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files) {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(file.getOriginalFilename()));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {

            if (!resource.contains("profile")) {
                // 提取日期部分：20240521
                String datePart = resource.substring(resource.indexOf('/') + 1, resource.indexOf('/') + 9);
                String formattedDate = formatDate(datePart);
                resource = "/profile/upload/" + formattedDate + resource.replace("upload", "");

            }
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    public static String formatDate(String inputDate) {
        try {
            SimpleDateFormat inputFormat = new SimpleDateFormat("yyyyMMdd");
            Date date = inputFormat.parse(inputDate);

            SimpleDateFormat outputFormat = new SimpleDateFormat("yyyy/MM/dd");
            return outputFormat.format(date);
        } catch (ParseException e) {
            return null;
        }
    }
}