ShoppingcartValidiyChecker.ts

import { ZodType } from "zod";

import { Request } from "express";
import { ValidityChecker } from "../ValidityCheker";
import { queryParamsSchema } from "../utils/queryParamsSchema";
import { addShoppingCartSchema, deleteShoppingCartSchema, queryNameSchema, queryShoppingartParamsSchema, updateShoppingCartSchema } from "./shoppingcart.schema";

export class ShoppingCartValidityChecker extends ValidityChecker {
  path: string;
  req: Request;

  constructor(path: string, req: Request) {
    super();
    this.path = path;
    this.req = req;
  }

  validateUsingUrl(): boolean {
    if (this.path === "/createShoppingCart") {
      this.setSchema(addShoppingCartSchema);
      this.setObject(this.req.body);
      return this.validate();
    }

    if (this.path === "/getShoppingListContainingItemByName") {
      this.setSchema(queryNameSchema);
      this.setObject(this.req.query);
      return this.validate();
    }

    if (this.path === "/getShoppingCartByCriteria") {
      let body = { ...this.req.query };
      this.setSchema(queryShoppingartParamsSchema);
      this.setObject(body);

      const isValid = this.validate();
      if (isValid) {
        let criteria = Object.keys(body)[0];
        this.req.params.selector = criteria;
        this.req.params.value = String(body[criteria]);
      }
      return isValid;
    }

    if (this.path === "/updateShoppingCart") {
      this.setSchema(updateShoppingCartSchema);
      this.setObject(this.req.body);
      return this.validate();
    }

    if (this.path === "/deleteShoppingCart") {
      let body = { id: Number(this.req.query.id) };
      this.setSchema(deleteShoppingCartSchema);
      this.setObject(body);
      return this.validate();
    }

    return true;
  }
}