login method added

index.js

@@ -0,0 +1,49 @@
+const axios = require("axios");
+const FormData = require("form-data");
+
+let Chapter = class {
+    #memberList;
+    #loggedIn = false;
+    /* the CFID and CFTOKEN are required to use the api call that returns
+       all the chapter members. I don't know what they do, but all I know is
+       they are required in the URL and they change every time you log in. */
+    #CFID = "";;
+    #CFTOKEN = "";;
+
+    // returns a promise with a success or error message
+    async login(username, password) {
+        // create new form data needed to log into the admin panel
+        const form = new FormData();
+        form.append("username", username);
+        form.append("password", password);
+
+        /* post request sent with the form data to log into admin panel
+        if login is successful, extract the needed CFID and CFTOKEN */
+        await axios
+        .post("https://services.acm.org/public/chapters/login.cfm", form)
+        /* a successful login attempt gives the status code 301 (redirect), and
+        is therefor sent to the .catch block. */
+        .catch((response) => {
+            // successfully logged in
+            if (response.request.res.statusCode == 300) {
+                this.#loggedIn = true;
+                let res = response.request._redirectable._options.query;
+                this.#CFID = res.slice(5, res.indexOf("&"));
+                this.#CFTOKEN = res.slice(res.indexOf("CFTOKEN") + 8);
+            }
+        });
+
+        const result = new Promise((resolve, reject) => {
+            if (this.#loggedIn) {
+                resolve("Successfully logged in");
+            }
+            else {
+                reject("ERROR: Invalid login credentials.");
+            }
+        });
+
+        return result;
+    }
+}
+
+module.exports = Chapter;

package.json

@@ -21,5 +21,8 @@
   "bugs": {
     "url": "https://github.com/mgrist/acm-roster/issues"
   },
-  "homepage": "https://github.com/mgrist/acm-roster#readme"
+  "homepage": "https://github.com/mgrist/acm-roster#readme",
+  "dependencies": {
+    "axios": "^0.27.2"
+  }
 }