package com.huaheng.pc.common;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.huaheng.common.config.Global;

import com.google.zxing.WriterException;
import com.huaheng.common.config.Global;
import com.huaheng.common.config.ServerConfig;
import com.huaheng.common.utils.QRCodeGenerator;
import com.huaheng.common.utils.file.FileUploadUtils;
import com.huaheng.framework.config.HuaHengConfig;
import com.huaheng.framework.web.domain.AjaxResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.*;
import com.huaheng.common.utils.file.FileUtils;
import org.springframework.web.multipart.MultipartFile;

/**
 * 通用请求处理
 * 
 * @author huaheng
 */
@Controller
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Resource
    private ServerConfig serverConfig;

    @RequestMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {

        try {
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = Global.getDownloadPath() + fileName;

            response.setCharacterEncoding("utf-8");
            response.setContentType("multipart/form-data");
            response.setHeader("Content-Disposition", "attachment;fileName=" + setFileDownloadHeader(request, realFileName));
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    public String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
    {
        final String agent = request.getHeader("USER-AGENT");
        String filename = fileName;
        if (agent.contains("MSIE"))
        {
            // IE浏览器
            filename = URLEncoder.encode(filename, "utf-8");
            filename = filename.replace("+", " ");
        }
        else if (agent.contains("Firefox"))
        {
            // 火狐浏览器
            filename = new String(fileName.getBytes(), "ISO8859-1");
        }
        else if (agent.contains("Chrome"))
        {
            // google浏览器
            filename = URLEncoder.encode(filename, "utf-8");
        }
        else
        {
            // 其它浏览器
            filename = URLEncoder.encode(filename, "utf-8");
        }
        return filename;

    }

    @GetMapping(value = "/image/{text}")
    public ResponseEntity<byte[]> getImage(@PathVariable("text") String text) {
        byte[] qrcode = null;
        try {
            qrcode = QRCodeGenerator.getQRCodeImage(text, 100, 100);
        } catch (WriterException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // Set headers
        final HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.IMAGE_PNG);
        return new ResponseEntity<byte[]>(qrcode, headers, HttpStatus.CREATED);
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    @ResponseBody
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = HuaHengConfig.getProfile();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + "/" + fileName;
            AjaxResult ajax = AjaxResult.success();
            Map<String, Object> map = new HashMap<>();

            map.put("fileName", fileName);
            map.put("url", url);
            ajax.setData(map);
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }
}