Create user_follows table for social follow functionality

cgen-b60250f6bd65488391df858996643cbb

supabase/migrations/20250125_create_user_follows.sql

@@ -0,0 +1,35 @@
+-- Create user_follows table for tracking followers/following relationships
+CREATE TABLE IF NOT EXISTS public.user_follows (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  follower_id uuid NOT NULL REFERENCES public.user_profiles(id) ON DELETE CASCADE,
+  following_id uuid NOT NULL REFERENCES public.user_profiles(id) ON DELETE CASCADE,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  UNIQUE(follower_id, following_id),
+  CHECK (follower_id != following_id)
+);
+
+-- Create indexes for better query performance
+CREATE INDEX IF NOT EXISTS idx_user_follows_follower_id ON public.user_follows(follower_id);
+CREATE INDEX IF NOT EXISTS idx_user_follows_following_id ON public.user_follows(following_id);
+
+-- Enable Row Level Security
+ALTER TABLE public.user_follows ENABLE ROW LEVEL SECURITY;
+
+-- RLS Policies
+DO $$ BEGIN
+  CREATE POLICY user_follows_read ON public.user_follows
+    FOR SELECT TO authenticated USING (true);
+EXCEPTION WHEN duplicate_object THEN NULL; END $$;
+
+DO $$ BEGIN
+  CREATE POLICY user_follows_create ON public.user_follows
+    FOR INSERT TO authenticated WITH CHECK (follower_id = auth.uid());
+EXCEPTION WHEN duplicate_object THEN NULL; END $$;
+
+DO $$ BEGIN
+  CREATE POLICY user_follows_delete_own ON public.user_follows
+    FOR DELETE TO authenticated USING (follower_id = auth.uid());
+EXCEPTION WHEN duplicate_object THEN NULL; END $$;
+
+-- Grant permissions to service role
+GRANT SELECT, INSERT, UPDATE, DELETE ON public.user_follows TO service_role;