formflux/dist/esm/setFileNameToBody.js

A package to upload files to a server and parsing multipart-formData requests

import createNewBody from "./helpers/resBodyMaker";
import EventHandlers from "./EventHandlers";
class setFileNameToBody {
  constructor(obj) {
    this.obj = void 0;
    this.obj = obj;
  }
  setFileNames(req) {
    try {
      req.body = req.body ? req.body : {};
      for (let i = 0; i < this.obj.metaData.length; i++) {
        if (this.obj.fileName.length > 0) {
          if (/\[.*\]/.test(this.obj.fieldNameFile[i])) {
            this.nestedData(req, this.obj.fieldNameFile[i], this.obj.fileName[i]);
          }
          if (!req.body[`${this.obj.fieldNameFile[i]}`] && !/\[.*\]/.test(this.obj.fieldNameFile[i])) req.body[`${this.obj.fieldNameFile[i]}`] = this.obj.modifiedFileName[i];else if (req.body[`${this.obj.fieldNameFile[i]}`] && !/\[.*\]/.test(this.obj.fieldNameFile[i])) req.body[`${this.obj.fieldNameFile[i]}`] = [req.body[`${this.obj.fieldNameFile[i]}`], this.obj.modifiedFileName[i]].flat();
        }
      }
    } catch (err) {
      console.log(err);
      EventHandlers.emit("parseError", {
        message: "Error in parsing form data.Invalid Format!",
        code: 400
      });
    }
  }
  nestedData(req, fieldName, data) {
    let outer = fieldName.substring(0, fieldName.indexOf("["));
    let inners = fieldName.substring(fieldName.indexOf("["));
    let i = 0;
    let current;
    let prev;
    let temp = inners.match(/\[([^\]]+)\]/g).map(s => s.slice(1, -1)); // [a,b,c] => [a,b,c]
    if (!req.body[`${outer}`]) {
      for (let _i = temp.length - 1; _i >= 0; _i--) {
        if (!isNaN(temp[_i])) {
          if (!prev) {
            current = [data];
            prev = current;
          } else {
            current = [prev];
            prev = current;
          }
        } else {
          if (!prev) {
            current = {
              [`${temp[_i]}`]: data
            };
            prev = current;
          } else {
            current = {
              [`${temp[_i]}`]: prev
            };
            prev = current;
          }
        }
      }
      req.body[`${outer}`] = current;
    } else {
      temp.unshift(outer);
      this.getNestedField(req, req.body, temp, temp[temp.length - 1], data, 0, req.body);
    }
  }

  // mapping.....
  getNestedField(req, obj, posArr, keySearch, data, i, prevObj) {
    if (i == posArr.length - 1) {
      // reached last position set the value
      if (Array.isArray(obj)) {
        if (!isNaN(posArr[i])) {
          // if the current position is a number then it is an array
          obj[posArr[i]] ? obj[posArr[i]] = data : obj.push(data);
          return;
        } else {
          obj[posArr[i]] = data; // needs some checking
          return;
        }
      } else {
        // it is an objct
        obj[posArr[i]] = data;
        return;
      }
    }
    if (!obj[posArr[i]]) {
      if (!isNaN(posArr[i])) {
        obj[posArr[i]] = createNewBody(posArr, i + 1, data); // create the rest
        return;
      } else {
        obj[posArr[i]] = createNewBody(posArr, i + 1, data);
        return;
      }
    }
    prevObj = obj[posArr[i]];
    this.getNestedField(req, obj[posArr[i]], posArr, keySearch, data, i + 1, prevObj);
  }
}
export default setFileNameToBody;
//# sourceMappingURL=setFileNameToBody.js.map