1 files changed, 39 insertions, 0 deletions
diff --git a/src/components/GithubAvatar/GithubAvatar.tsx b/src/components/GithubAvatar/GithubAvatar.tsx
new file mode 100644
index 0000000..32ac553
--- /dev/null
+++ b/src/components/GithubAvatar/GithubAvatar.tsx
@@ -0,0 +1,39 @@
+import React from 'react';
+
+import {
+  Avatar,
+  Link,
+} from '@material-ui/core';
+
+interface PropTypes {
+  username: string;
+}
+
+const githubUrl = 'https://github.com/';
+const getUserGithubUrl = (username: string): string => githubUrl + username;
+
+const GithubAvatar: React.FC<PropTypes> = ({ username }) => {
+  if (username === 'anonymous') return <Avatar/>;
+
+  const userGithubUrl = getUserGithubUrl(username);
+  const avatarUrl = userGithubUrl + '.png';
+  const usernameTokens = username.split(/[ ,.\-_#@;]/g);
+  const altText = (
+    (usernameTokens.length > 1)?
+      (usernameTokens[0][0] + usernameTokens[1][0])
+    :
+      usernameTokens[0][0]
+  ).toUpperCase()
+
+  return (
+    <Link href={userGithubUrl}>
+      <Avatar>
+        <img src={avatarUrl} alt={altText} />
+      </Avatar>
+    </Link>
+  )
+};
+
+export { getUserGithubUrl };
+export default GithubAvatar;
+