package com.lf.server.controller.data;

import com.lf.server.annotation.SysLog;
import com.lf.server.controller.all.BaseController;
import com.lf.server.entity.all.HttpStatus;
import com.lf.server.entity.all.ResponseMsg;
import com.lf.server.entity.ctrl.DownloadReqEntity;
import com.lf.server.entity.data.DownloadEntity;
import com.lf.server.entity.data.MetaEntity;
import com.lf.server.entity.data.MetaFileEntity;
import com.lf.server.entity.sys.UserEntity;
import com.lf.server.helper.Md5Helper;
import com.lf.server.helper.StringHelper;
import com.lf.server.helper.WebHelper;
import com.lf.server.service.data.DownloadService;
import com.lf.server.service.data.MetaService;
import com.lf.server.service.sys.TokenService;
import io.swagger.annotations.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
import java.util.List;

/**
 * 元数据
 * @author WWW
 */
@Api(tags = "数据管理\\元数据")
@RestController
@RequestMapping("/meta")
public class MetaController extends BaseController {
    @Autowired
    MetaService metaService;

    @Autowired
    TokenService tokenService;

    @Autowired
    DownloadService downloadService;

    private final static String EQ = "=";

    @SysLog()
    @ApiOperation(value = "分页查询并返回记录数")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "dirid", value = "目录ID", dataType = "Integer", paramType = "query", example = "10"),
            @ApiImplicitParam(name = "name", value = "名称", dataType = "String", paramType = "query", example = ""),
            @ApiImplicitParam(name = "pageSize", value = "每页条数", dataType = "Integer", paramType = "query", example = "10"),
            @ApiImplicitParam(name = "pageIndex", value = "分页数（从1开始）", dataType = "Integer", paramType = "query", example = "1")
    })
    @GetMapping(value = "/selectByPageAndCount")
    public ResponseMsg<List<MetaEntity>> selectByPageAndCount(Integer dirid, String name, Integer pageSize, Integer pageIndex) {
        try {
            if (pageSize < 1 || pageIndex < 1) {
                return fail("每页页数或分页数小于1", null);
            }

            int count = metaService.selectCount(dirid, name);
            if (count == 0) {
                return success(0, null);
            }

            List<MetaEntity> rs = metaService.selectByPage(dirid, name, pageSize, pageSize * (pageIndex - 1));

            return success(count, rs);
        } catch (Exception ex) {
            return fail(ex.getMessage(), null);
        }
    }

    @SysLog()
    @ApiOperation(value = "查询所有")
    @GetMapping(value = "/selectAll")
    public ResponseMsg<List<MetaEntity>> selectAll() {
        try {
            List<MetaEntity> list = metaService.selectAll();

            return success(list);
        } catch (Exception ex) {
            return fail(ex.getMessage(), null);
        }
    }

    @SysLog()
    @ApiOperation(value = "根据ID查询")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "ID", dataType = "int", paramType = "query", example = "1")
    })
    @GetMapping(value = "/selectById")
    public ResponseMsg<MetaEntity> selectById(int id) {
        try {
            MetaEntity entity = metaService.selectById(id);

            return success(entity);
        } catch (Exception ex) {
            return fail(ex.getMessage(), null);
        }
    }

    @SysLog()
    @ApiOperation(value = "插入一条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "entity", value = "实体类", dataType = "MetaEntity", paramType = "body")
    })
    @PostMapping(value = "/insert", produces = "application/json; charset=UTF-8")
    public ResponseMsg<Integer> insert(@RequestBody MetaEntity entity, HttpServletRequest req) {
        try {
            UserEntity ue = tokenService.getCurrentUser(req);
            if (ue != null) {
                entity.setCreateUser(ue.getId());
            }

            entity.setCreateTime(WebHelper.getCurrentTimestamp());
            int count = metaService.insert(entity);

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "插入多条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "list", value = "实体类集合", dataType = "MetaEntity", paramType = "body")
    })
    @PostMapping(value = "/inserts", produces = "application/json; charset=UTF-8")
    public ResponseMsg<Integer> inserts(@RequestBody List<MetaEntity> list, HttpServletRequest req) {
        try {
            UserEntity ue = tokenService.getCurrentUser(req);
            if (ue != null) {
                for (MetaEntity entity : list) {
                    entity.setCreateUser(ue.getId());
                }
            }

            int count = metaService.inserts(list);

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "删除一条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "ID", dataType = "Integer", paramType = "query", example = "1")
    })
    @GetMapping(value = "/delete")
    public ResponseMsg<Integer> delete(int id) {
        try {
            // int count = metaService.delete(id)
            int count = metaService.deleteCascade(String.valueOf(id));

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "删除多条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "ids", value = "ID数组", dataType = "Integer", paramType = "query", example = "1,2")
    })
    @GetMapping(value = "/deletes")
    public ResponseMsg<Integer> deletes(@RequestParam List<Integer> ids) {
        try {
            if (ids == null || ids.isEmpty()) {
                return fail("id数组不能为空", -1);
            }

            // int count = metaService.deletes(ids)
            String idStr = StringHelper.join(ids, ",");
            int count = metaService.deleteCascade(idStr);

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "更新一条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "entity", value = "实体类", dataType = "MetaEntity", paramType = "body")
    })
    @ResponseBody
    @PostMapping(value = "/update", produces = "application/json; charset=UTF-8")
    public ResponseMsg<Integer> update(@RequestBody MetaEntity entity, HttpServletRequest req) {
        try {
            UserEntity ue = tokenService.getCurrentUser(req);
            if (ue != null) {
                entity.setUpdateUser(ue.getId());
            }

            int count = metaService.update(entity);

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "更新多条")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "list", value = "实体类集合", dataType = "MetaEntity", paramType = "body")
    })
    @ResponseBody
    @PostMapping(value = "/updates", produces = "application/json; charset=UTF-8")
    public ResponseMsg<Integer> updates(@RequestBody List<MetaEntity> list, HttpServletRequest req) {
        try {
            UserEntity ue = tokenService.getCurrentUser(req);
            if (ue != null) {
                for (MetaEntity entity : list) {
                    entity.setUpdateUser(ue.getId());
                }
            }

            int count = metaService.updates(list);

            return success(count);
        } catch (Exception ex) {
            return fail(ex.getMessage(), -1);
        }
    }

    @SysLog()
    @ApiOperation(value = "分页查询下载记录并返回记录数")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "name", value = "名称", dataType = "String", paramType = "query", example = ""),
            @ApiImplicitParam(name = "pageSize", value = "每页条数", dataType = "Integer", paramType = "query", example = "10"),
            @ApiImplicitParam(name = "pageIndex", value = "分页数（从1开始）", dataType = "Integer", paramType = "query", example = "1")
    })
    @GetMapping(value = "/selectPageCountForDownload")
    public ResponseMsg<List<DownloadEntity>> selectPageCountForDownload(String name, Integer pageSize, Integer pageIndex, HttpServletRequest req) {
        try {
            if (pageSize < 1 || pageIndex < 1) {
                return fail("每页页数或分页数小于1", null);
            }

            UserEntity ue = tokenService.getCurrentUser(req);
            if (ue == null) {
                return fail("用户未登录", null);
            }

            int count = downloadService.selectCountForUser(ue.getCreateUser(), 3, name);
            if (count == 0) {
                return success(0, null);
            }
            List<DownloadEntity> rs = downloadService.selectByPageForUser(ue.getCreateUser(), 3, name, pageSize, pageSize * (pageIndex - 1));

            return success(count, rs);
        } catch (Exception ex) {
            return fail(ex.getMessage(), null);
        }
    }

    @SysLog()
    @ApiOperation(value = "请求下载")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "pwd", value = "密码", dataType = "String", paramType = "body", example = ""),
            @ApiImplicitParam(name = "ids", value = "ID数组", dataType = "Integer", paramType = "body", example = "1,2")
    })
    @ResponseBody
    @PostMapping(value = "/downloadReq")
    public ResponseMsg<Object> downloadReq(@RequestBody DownloadReqEntity reqEntity, HttpServletRequest req, HttpServletResponse res) {
        try {
            if (null == reqEntity || StringHelper.isEmpty(reqEntity.getPwd())) {
                return fail("密码不能为空");
            }
            if (null == reqEntity.getIds() || reqEntity.getIds().isEmpty()) {
                return fail("请选择要下载的文件");
            }
            if (!downloadService.decryptPwd(reqEntity)) {
                return fail("密码解密失败", null);
            }
            if (!StringHelper.checkPwdValid(reqEntity.getPwd())) {
                return fail("密码不符合要求");
            }

            List<MetaFileEntity> list = metaService.selectMetaFiles(reqEntity.getIds());
            if (null == list || list.isEmpty()) {
                return fail("没有找到元数据");
            }

            UserEntity ue = tokenService.getCurrentUser(req);
            String guid = downloadService.zipFiles(ue, list, reqEntity.getPwd());

            return success(guid);
        } catch (Exception ex) {
            return fail(ex.getMessage(), null);
        }
    }

    @SysLog()
    @ApiOperation(value = "查询下载文件")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "guid", value = "文件GUID", dataType = "String", paramType = "query"),
            @ApiImplicitParam(name = "pwd", value = "密码", dataType = "String", paramType = "query")
    })
    @GetMapping(value = "/selectDownloadFile")
    public ResponseMsg<Boolean> selectDownloadFile(String guid, String pwd) {
        try {
            if (StringHelper.isEmpty(guid) || StringHelper.isEmpty(pwd)) {
                return fail("文件ID和密码不能为空", null);
            }
            if (!pwd.endsWith(EQ)) {
                pwd = URLDecoder.decode(pwd, StandardCharsets.UTF_8.name());
            }

            String password = downloadService.decryptPwd(pwd);
            if (null == password) {
                return fail("密码解密失败", null);
            }

            DownloadEntity de = downloadService.selectByGuid(guid);
            if (null == de) {
                return fail("文件不存在", null);
            }
            if (!StringHelper.isNull(de.getPwd()) && !Md5Helper.validatePassword(password, de.getPwd())) {
                return fail("密码不正确", null);
            }

            String filePath = downloadService.getDownloadFilePath(de);
            File file = new File(filePath);

            return success(file.exists());
        } catch (Exception ex) {
            return fail(ex.getMessage(), false);
        }
    }

    @SysLog()
    @ApiOperation(value = "下载文件")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "guid", value = "文件GUID", dataType = "String", paramType = "query"),
            @ApiImplicitParam(name = "pwd", value = "密码", dataType = "String", paramType = "query")
    })
    @ResponseBody
    @GetMapping(value = "/downloadFile")
    public void downloadFile(String guid, String pwd, HttpServletRequest req, HttpServletResponse res) {
        try {
            if (StringHelper.isEmpty(guid) || StringHelper.isEmpty(pwd)) {
                WebHelper.writeInfo(HttpStatus.BAD_REQUEST, "文件ID和密码不能为空", res);
            }
            if (!pwd.endsWith(EQ)) {
                pwd = URLDecoder.decode(pwd, StandardCharsets.UTF_8.name());
            }

            String password = downloadService.decryptPwd(pwd);
            if (null == password) {
                WebHelper.writeInfo(HttpStatus.BAD_REQUEST, "密码解密失败", res);
            }

            DownloadEntity de = downloadService.selectByGuid(guid);
            if (null == de) {
                WebHelper.writeInfo(HttpStatus.NOT_FOUND, "文件不存在", res);
                return;
            }
            if (!StringHelper.isNull(de.getPwd()) && !Md5Helper.validatePassword(password, de.getPwd())) {
                WebHelper.writeInfo(HttpStatus.UNAUTHORIZED, "密码不正确", res);
            }

            UserEntity ue = tokenService.getCurrentUser(req);
            de.setDcount(de.getDcount() + 1);
            de.setDownloadUser(ue.getId());
            int rows = downloadService.update(de);

            String filePath = downloadService.getDownloadFilePath(de);
            WebHelper.download(filePath, de.getName(), res);
        } catch (Exception ex) {
            WebHelper.writeInfo(HttpStatus.ERROR, ex.getMessage(), res);
        }
    }
}