Working on arthome

server/routes/auth/github.get.ts

@@ -2,17 +2,85 @@ export default oauthGitHubEventHandler({
   config: {
     emailRequired: true,
   },
-  async onSuccess(event, { user }) {
-    await setUserSession(event, {
-      user: {
-        email: user.email,
-        name: user.name,
-      },
+  async onSuccess(event, { user: oauthUser, tokens }) {
+    const userSession = await getUserSession(event)
+
+    // If the user is already signed in, link the account
+    if (userSession?.id) {
+      const user = await findUserById(userSession.id)
+
+      if (user) {
+        await updateUser(userSession.id, {
+          githubId: oauthUser.id,
+          githubToken: tokens.access_token,
+        })
+
+        await setUserSession(event, {
+          id: userSession.id,
+          user: userSession,
+          githubId: oauthUser.id,
+        })
+
+        return sendRedirect(event, '/')
+      }
+    }
+
+    // If the user is not signed in, search for an existing user with that GitHub ID
+    // If it exists, sign in as that user and refresh the token
+    let user = await findUserByGitHubId(oauthUser.id)
+
+    if (user) {
+      await updateUser(user.id, {
+        githubId: oauthUser.id,
+        githubToken: tokens.access_token,
+      })
+
+      await setUserSession(event, {
+        id: user.id,
+        user,
+      })
+
+      return sendRedirect(event, '/')
+    }
+
+    // If the user is not signed in, search for an existing user with that email address without a GitHub ID
+    // If it exists, tells the user to sign in with that account and link the GitHub account
+    user = await findUserBy(
+      and(
+        eq(tables.users.email, oauthUser.email),
+        isNull(tables.users.githubId),
+      ),
+    )
+
+    if (user) {
+      await updateSession(event, {
+        password: useRuntimeConfig(event).session.password,
+      }, {
+        message: 'An existing account for this email already exists. Please login and visit your profile settings to add support for GitHub authentication.',
+      })
+      return sendRedirect(event, '/login')
+    }
+
+    // If the user is not signed in and no user exists with that GitHub ID or email address, create a new user
+    const createdUser = await createUser({
+      username: oauthUser.login as string,
+      description: oauthUser.bio as string,
+      name: oauthUser.name as string,
+      email: oauthUser.email as string,
+      avatar: oauthUser.avatar_url as string,
+      githubId: oauthUser.id as number,
+      githubToken: tokens.access_token as string,
+      language: 'en-US',
+      location: 'unknown',
+      private: false,
+      subscription: 'free',
     })
-    return sendRedirect(event, '/home')
-  },
-  onError(event, error) {
-    console.error('GitHub OAuth error:', error)
+
+    await setUserSession(event, {
+      id: createdUser.id,
+      user: createdUser,
+    })
+
     return sendRedirect(event, '/')
   },
 })