Remove accounts

back-end/app.js

@@ -83,6 +83,7 @@ mongoose
 // importing user context
 const UserModel = require("./model/user");
 const isDuplicateAccount = require("./functions/isDuplicateAccount");
+const removeAccount = require("./functions/removeAccount");
 
 // Initialize the Plaid client
 const configuration = new Configuration({
@@ -475,5 +476,20 @@ app.post("/api/contactInfo", async (req, resp) => {
   }
 });
 
+app.post("/api/delete_account", async (req, res) => {
+  try {
+    const bankName = req.body.account_name;
+    const id = req.body._id;
+    const accessTokensArr = await getAccessTokens(id); // get all tokens
+    removeAccount(bankName, accessTokensArr, id);
+    return res.status(200).json({ removed: bankName, successful: true });
+  } catch (error) {
+    console.log(error);
+    return res.status(400).json({
+      err: error,
+    });
+  }
+});
+
 // export the express app we created to make it available to other modules
 module.exports = { app, prettyPrintResponse, formatError };

back-end/functions/removeAccount.js

@@ -0,0 +1,64 @@
+require("dotenv").config({ silent: true });
+const { Configuration, PlaidApi, PlaidEnvironments } = require("plaid");
+const UserModel = require("../model/user");
+
+// Initialize the Plaid client
+const PLAID_CLIENT_ID = process.env.PLAID_CLIENT_ID;
+const PLAID_SECRET = process.env.PLAID_SECRET;
+const PLAID_ENV = process.env.PLAID_ENV || "sandbox";
+
+const configuration = new Configuration({
+  basePath: PlaidEnvironments[PLAID_ENV],
+  baseOptions: {
+    headers: {
+      "PLAID-CLIENT-ID": PLAID_CLIENT_ID,
+      "PLAID-SECRET": PLAID_SECRET,
+      "Plaid-Version": "2020-09-14",
+    },
+  },
+});
+
+const plaidClient = new PlaidApi(configuration);
+
+/**
+ * Removes the access token of the account specified from the DB
+ * @param {*} curAccountName
+ * @param {*} accessTokensArr
+ * @param {*} userId
+ * @returns true if account was removed, false otherwise
+ */
+const removeAccount = async (curAccountName, accessTokensArr, userId) => {
+  try {
+    for (const token of accessTokensArr) {
+      const tempAccount = await plaidClient.accountsGet({
+        access_token: token.access_token,
+      });
+      // prevent null errors if tempAccount.data.accounts is null or anything is null
+      const accountArr = tempAccount?.data?.accounts ? tempAccount?.data?.accounts : [];
+      // check each bank's accounts to see if account to be removed exists
+      for (const accountObj of accountArr) {
+        if (accountObj.name === curAccountName) {
+          UserModel.updateOne(
+            { _id: userId },
+            { $pull: { access_token: token } },
+            function (err) {
+              if (err) {
+                console.log(err);
+              } else {
+                console.log("Successfully removed access token from db.");
+              }
+            }
+          );
+          return true; // stop iterating, account already removed
+        }
+      }
+    }
+    // if we get here, then we did not remove anything
+    return false;
+  } catch (error) {
+    console.log(error);
+    return false;
+  }
+};
+
+module.exports = removeAccount;

back-end/test/test.js

@@ -16,6 +16,7 @@ Object.assign(global, require(path.join(__dirname, "../app.js")));
 
 const sinon = require("sinon");
 const isDuplicateAccount = require("../functions/isDuplicateAccount");
+const removeAccount = require("../functions/removeAccount");
 sinon.stub(console, "log"); // comment this out if you want debugging statements!
 
 transactionsTest = [
@@ -601,4 +602,16 @@ describe("testing constructing functions", () => {
       );
     });
   });
+  describe("testing removeAccount function with bad access token", () => {
+    it("reads function response and returns false", () => {
+      expect(
+        removeAccount("fakeAccountName", ["foo", "bar"], "fakeUserId") === false
+      );
+    });
+  });
+  describe("testing removeAccount function with no access tokens", () => {
+    it("reads function response and returns false", () => {
+      expect(removeAccount("fakeAccountName", [], "fakeUserId") === false);
+    });
+  });
 });

front-end/src/components/AccountDetail/AccountDetail.js

@@ -1,6 +1,8 @@
 import React from "react";
 import Button from "@mui/material/Button";
 import "../css/AccountDetail.css";
+import axios from "axios";
+
 /**
  * This component renders the body for the details page of 1 bank account.
  * Clicking on the "Save Details" button at the end will bring the user pack to the
@@ -9,12 +11,18 @@ import "../css/AccountDetail.css";
  * @returns Details page for 1 bank account
  */
 function AccountDetail(props) {
-    console.log(props.bankDetails);
+  console.log(props.bankDetails);
   return (
     <div>
       <h1>{props.bankDetails.name}</h1>
-      <h5>Available Balance: {props.bankDetails.balances.available} {props.bankDetails.balances.currency}</h5>
-      <h5>Current Balance: {props.bankDetails.balances.current} {props.bankDetails.balances.currency}</h5>
+      <h5>
+        Available Balance: {props.bankDetails.balances.available}{" "}
+        {props.bankDetails.balances.currency}
+      </h5>
+      <h5>
+        Current Balance: {props.bankDetails.balances.current}{" "}
+        {props.bankDetails.balances.currency}
+      </h5>
       <Button
         onClick={() => {
           props.showAccountDetail(false);
@@ -25,6 +33,29 @@ function AccountDetail(props) {
       >
         Back
       </Button>
+      <div>
+        <Button
+          onClick={() => {
+            axios
+              .post("/api/delete_account", {
+                account_name: props.bankDetails.name,
+                _id: JSON.parse(sessionStorage.getItem("user"))._id,
+              })
+              .then((resp) => {
+                console.log(resp.data);
+                alert("Account successfully removed.");
+                window.location.reload();
+                // props.showAccountDetail(false);
+                // props.setBankDetailHeader("");
+              });
+          }}
+          variant="contained"
+          id="save-details-btn"
+          color="secondary"
+        >
+          Delete Account
+        </Button>
+      </div>
     </div>
   );
 }

front-end/src/components/Accounts/AccountsPage.js

@@ -20,6 +20,9 @@ const PlaidLink = (props) => {
       .then((resp) => {
         console.log(resp.data);
         localStorage.setItem("access_token_object", JSON.stringify(resp.data));
+        setTimeout(function () {
+          window.location.reload();
+        }, 3000);
       });
   };