Fix Discord OAuth data extraction

supabase/functions/process-oauth-profile/index.ts

@@ -31,8 +31,12 @@ interface DiscordUserMetadata {
   email?: string;
   username?: string;
   global_name?: string;
+  discriminator?: string;
   avatar?: string;
   id?: string;
+  verified?: boolean;
+  flags?: number;
+  premium_type?: number;
 }
 
 Deno.serve(async (req) => {
@@ -75,12 +79,21 @@ Deno.serve(async (req) => {
       const discordIdentity = user.identities.find(i => i.provider === 'discord');
       if (discordIdentity) {
         userMetadata = discordIdentity.identity_data || {};
+        
+        // Debug: Log full identity_data to see what Discord actually returns
+        console.log('[OAuth Profile] Discord identity_data (full):', JSON.stringify(discordIdentity.identity_data));
+        
         console.log('[OAuth Profile] Using Discord identity data:', {
           hasAvatar: !!userMetadata.avatar,
           hasUsername: !!userMetadata.username,
           hasGlobalName: !!userMetadata.global_name,
-          hasId: !!userMetadata.id
+          hasId: !!userMetadata.id,
+          hasEmail: !!userMetadata.email,
+          avatarValue: userMetadata.avatar,
+          idValue: userMetadata.id
         });
+      } else {
+        console.warn('[OAuth Profile] Discord provider found but no Discord identity in user.identities');
       }
     }
 
@@ -97,18 +110,35 @@ Deno.serve(async (req) => {
       console.log('[OAuth Profile] Google user:', { avatarUrl, displayName, usernameBase });
     } else if (provider === 'discord') {
       const discordData = userMetadata as DiscordUserMetadata;
+      
+      // Prefer global_name, fall back to username
       displayName = discordData.global_name || discordData.username || null;
       usernameBase = discordData.username || null;
       
-      // Extract email (Discord provides it)
+      // Extract email (Discord provides it with email scope)
       const discordEmail = discordData.email || null;
       
+      // Validate we have minimum required data
+      if (!discordData.id) {
+        console.error('[OAuth Profile] Discord user ID missing - OAuth scopes may not be configured correctly');
+      }
+      
+      if (!discordData.username) {
+        console.warn('[OAuth Profile] Discord username missing - using ID as fallback');
+        usernameBase = discordData.id || null;
+      }
+      
       // Construct Discord avatar URL with proper format detection
       if (discordData.avatar && discordData.id) {
         // Discord animated avatars have 'a_' prefix and use .gif extension
         const isAnimated = discordData.avatar.startsWith('a_');
         const extension = isAnimated ? 'gif' : 'png';
         avatarUrl = `https://cdn.discordapp.com/avatars/${discordData.id}/${discordData.avatar}.${extension}?size=512`;
+      } else if (!discordData.avatar && discordData.id) {
+        // User has no custom avatar - use Discord default avatar
+        const defaultAvatarIndex = (parseInt(discordData.id) >> 22) % 6;
+        avatarUrl = `https://cdn.discordapp.com/embed/avatars/${defaultAvatarIndex}.png`;
+        console.log('[OAuth Profile] Using Discord default avatar for user without custom avatar');
       }
       
       console.log('[OAuth Profile] Discord user:', { 
@@ -116,7 +146,8 @@ Deno.serve(async (req) => {
         displayName, 
         usernameBase,
         email: discordEmail,
-        hasAnimatedAvatar: discordData.avatar?.startsWith('a_')
+        hasAnimatedAvatar: discordData.avatar?.startsWith('a_'),
+        hasCustomAvatar: !!discordData.avatar
       });
     } else {
       console.log('[OAuth Profile] Unsupported provider:', provider);