chore: linkedin login functionality (#4072)

src/components/AuthenticationFlow/LinkedInButton.tsx

@@ -0,0 +1,119 @@
+import { useEffect, useState } from 'preact/hooks';
+import Cookies from 'js-cookie';
+import LinkedIn from '../../icons/linkedin.svg';
+import SpinnerIcon from '../../icons/spinner.svg';
+import { TOKEN_COOKIE_NAME } from '../../lib/jwt';
+import { httpGet } from '../../lib/http';
+
+type LinkedInButtonProps = {};
+
+const LINKEDIN_REDIRECT_AT = 'linkedInRedirectAt';
+const LINKEDIN_LAST_PAGE = 'linkedInLastPage';
+
+export function LinkedInButton(props: LinkedInButtonProps) {
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState('');
+  const icon = isLoading ? SpinnerIcon : LinkedIn;
+
+  useEffect(() => {
+    const urlParams = new URLSearchParams(window.location.search);
+    const code = urlParams.get('code');
+    const state = urlParams.get('state');
+    const provider = urlParams.get('provider');
+
+    if (!code || !state || provider !== 'linkedin') {
+      return;
+    }
+
+    setIsLoading(true);
+    httpGet<{ token: string }>(
+      `${import.meta.env.PUBLIC_API_URL}/v1-linkedin-callback${
+        window.location.search
+      }`
+    )
+      .then(({ response, error }) => {
+        if (!response?.token) {
+          setError(error?.message || 'Something went wrong.');
+          setIsLoading(false);
+
+          return;
+        }
+
+        let redirectUrl = '/';
+        const linkedInRedirectAt = localStorage.getItem(LINKEDIN_REDIRECT_AT);
+        const lastPageBeforeLinkedIn = localStorage.getItem(LINKEDIN_LAST_PAGE);
+
+        // If the social redirect is there and less than 30 seconds old
+        // redirect to the page that user was on before they clicked the github login button
+        if (linkedInRedirectAt && lastPageBeforeLinkedIn) {
+          const socialRedirectAtTime = parseInt(linkedInRedirectAt, 10);
+          const now = Date.now();
+          const timeSinceRedirect = now - socialRedirectAtTime;
+
+          if (timeSinceRedirect < 30 * 1000) {
+            redirectUrl = lastPageBeforeLinkedIn;
+          }
+        }
+
+        localStorage.removeItem(LINKEDIN_REDIRECT_AT);
+        localStorage.removeItem(LINKEDIN_LAST_PAGE);
+        Cookies.set(TOKEN_COOKIE_NAME, response.token, {
+          path: '/',
+          expires: 30,
+        });
+        window.location.href = redirectUrl;
+      })
+      .catch((err) => {
+        setError('Something went wrong. Please try again later.');
+        setIsLoading(false);
+      });
+  }, []);
+
+  const handleClick = () => {
+    setIsLoading(true);
+    httpGet<{ loginUrl: string }>(
+      `${import.meta.env.PUBLIC_API_URL}/v1-linkedin-login`
+    )
+      .then(({ response, error }) => {
+        if (!response?.loginUrl) {
+          setError(error?.message || 'Something went wrong.');
+          setIsLoading(false);
+
+          return;
+        }
+
+        // For non authentication pages, we want to redirect back to the page
+        // the user was on before they clicked the social login button
+        if (!['/login', '/signup'].includes(window.location.pathname)) {
+          localStorage.setItem(LINKEDIN_REDIRECT_AT, Date.now().toString());
+          localStorage.setItem(LINKEDIN_LAST_PAGE, window.location.pathname);
+        }
+
+        window.location.href = response.loginUrl;
+      })
+      .catch((err) => {
+        setError('Something went wrong. Please try again later.');
+        setIsLoading(false);
+      });
+  };
+
+  return (
+    <>
+      <button
+        class="inline-flex h-10 w-full items-center justify-center gap-2 rounded border border-slate-300 bg-white p-2 text-sm font-medium text-black outline-none focus:ring-2 focus:ring-[#333] focus:ring-offset-1 disabled:cursor-not-allowed disabled:opacity-60"
+        disabled={isLoading}
+        onClick={handleClick}
+      >
+        <img
+          src={icon}
+          alt="Google"
+          class={`h-[18px] w-[18px] ${isLoading ? 'animate-spin' : ''}`}
+        />
+        Continue with LinkedIn
+      </button>
+      {error && (
+        <p className="mb-2 mt-1 text-sm font-medium text-red-600">{error}</p>
+      )}
+    </>
+  );
+}

src/components/AuthenticationFlow/LoginPopup.astro

@@ -4,6 +4,7 @@ import EmailLoginForm from './EmailLoginForm';
 import Divider from './Divider.astro';
 import { GitHubButton } from './GitHubButton';
 import { GoogleButton } from './GoogleButton';
+import { LinkedInButton } from './LinkedInButton';
 ---
 
 <Popup id='login-popup' title='' subtitle=''>
@@ -19,6 +20,7 @@ import { GoogleButton } from './GoogleButton';
   <div class='mt-7 flex flex-col gap-2'>
     <GitHubButton client:load />
     <GoogleButton client:load />
+    <LinkedInButton client:load />
   </div>
 
   <Divider />

src/icons/linkedin.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="100" height="100" viewBox="0,0,256,256">
+<g transform="translate(-26.66667,-26.66667) scale(1.20833,1.20833)"><g fill="none" fill-rule="nonzero" stroke="none" stroke-width="1" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="10" stroke-dasharray="" stroke-dashoffset="0" font-family="none" font-weight="none" font-size="none" text-anchor="none" style="mix-blend-mode: normal"><g transform="scale(5.33333,5.33333)"><path d="M42,37c0,2.762 -2.238,5 -5,5h-26c-2.761,0 -5,-2.238 -5,-5v-26c0,-2.762 2.239,-5 5,-5h26c2.762,0 5,2.238 5,5z" fill="#0288d1"></path><path d="M12,19h5v17h-5zM14.485,17h-0.028c-1.492,0 -2.457,-1.112 -2.457,-2.501c0,-1.419 0.995,-2.499 2.514,-2.499c1.521,0 2.458,1.08 2.486,2.499c0,1.388 -0.965,2.501 -2.515,2.501zM36,36h-5v-9.099c0,-2.198 -1.225,-3.698 -3.192,-3.698c-1.501,0 -2.313,1.012 -2.707,1.99c-0.144,0.35 -0.101,1.318 -0.101,1.807v9h-5v-17h5v2.616c0.721,-1.116 1.85,-2.616 4.738,-2.616c3.578,0 6.261,2.25 6.261,7.274l0.001,9.726z" fill="#ffffff"></path></g></g></g>
+</svg>

src/pages/login.astro

@@ -3,6 +3,7 @@ import Divider from '../components/AuthenticationFlow/Divider.astro';
 import EmailLoginForm from '../components/AuthenticationFlow/EmailLoginForm';
 import { GitHubButton } from '../components/AuthenticationFlow/GitHubButton';
 import { GoogleButton } from '../components/AuthenticationFlow/GoogleButton';
+import { LinkedInButton } from '../components/AuthenticationFlow/LinkedInButton';
 import AccountLayout from '../layouts/AccountLayout.astro';
 ---
 
@@ -24,6 +25,7 @@ import AccountLayout from '../layouts/AccountLayout.astro';
       <div class='flex w-full flex-col gap-2'>
         <GitHubButton client:load />
         <GoogleButton client:load />
+        <LinkedInButton client:load />
       </div>
 
       <Divider />

src/pages/signup.astro

@@ -3,6 +3,7 @@ import Divider from '../components/AuthenticationFlow/Divider.astro';
 import EmailSignupForm from '../components/AuthenticationFlow/EmailSignupForm';
 import { GitHubButton } from '../components/AuthenticationFlow/GitHubButton';
 import { GoogleButton } from '../components/AuthenticationFlow/GoogleButton';
+import { LinkedInButton } from '../components/AuthenticationFlow/LinkedInButton';
 import AccountLayout from '../layouts/AccountLayout.astro';
 ---
 
@@ -31,6 +32,7 @@ import AccountLayout from '../layouts/AccountLayout.astro';
       <div class='flex w-full flex-col items-stretch gap-2'>
         <GitHubButton client:load />
         <GoogleButton client:load />
+        <LinkedInButton client:load />
       </div>
 
       <Divider />