Added Supabase SQL migrations and environment config

supabase/migrations/002_public_profile_view.sql

@@ -0,0 +1,58 @@
+-- Create a view for public profile information
+-- This view exposes only non-sensitive information for public profiles
+CREATE OR REPLACE VIEW public.public_profiles AS
+SELECT
+    id,
+    username,
+    avatar_url,
+    bio,
+    is_public_profile,
+    countdown_start_date,
+    countdown_end_date,
+    created_at
+FROM public.users
+WHERE is_public_profile = true;
+
+-- Grant access to the view for authenticated users
+GRANT SELECT ON public.public_profiles TO authenticated;
+
+-- Function to get public leaderboard
+CREATE OR REPLACE FUNCTION get_leaderboard(sort_by TEXT DEFAULT 'created_at', limit_count INTEGER DEFAULT 50)
+RETURNS TABLE (
+    id UUID,
+    username TEXT,
+    avatar_url TEXT,
+    bio TEXT,
+    countdown_start_date TIMESTAMPTZ,
+    countdown_end_date TIMESTAMPTZ,
+    goals_completed_count INTEGER
+) AS $$
+BEGIN
+    RETURN QUERY
+    SELECT
+        u.id,
+        u.username,
+        u.avatar_url,
+        u.bio,
+        u.countdown_start_date,
+        u.countdown_end_date,
+        COALESCE(
+            (SELECT COUNT(*) FROM public.goals g WHERE g.owner_id = u.id AND g.completed = true),
+            0
+        ) as goals_completed_count
+    FROM public.users u
+    WHERE u.is_public_profile = true
+    ORDER BY
+        CASE sort_by
+            WHEN 'goals_completed' THEN COALESCE(
+                (SELECT COUNT(*) FROM public.goals g WHERE g.owner_id = u.id AND g.completed = true),
+                0
+            )
+            ELSE u.created_at
+        END DESC
+    LIMIT limit_count;
+END;
+$$ LANGUAGE plpgsql SECURITY DEFINER;
+
+-- Grant execute on the function
+GRANT EXECUTE ON FUNCTION get_leaderboard(TEXT, INTEGER) TO authenticated;