Refactor user lists

supabase/migrations/20251002033636_549a9c8b-5621-4c5e-921a-b4d9f37d7e60.sql

@@ -0,0 +1,109 @@
+-- Phase 4: User Lists Refactor - Create relational list items table
+
+-- Create user_top_list_items table with proper relational structure
+CREATE TABLE IF NOT EXISTS public.user_top_list_items (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  list_id uuid NOT NULL REFERENCES public.user_top_lists(id) ON DELETE CASCADE,
+  entity_type text NOT NULL CHECK (entity_type IN ('park', 'ride', 'company')),
+  entity_id uuid NOT NULL,
+  position integer NOT NULL,
+  notes text,
+  created_at timestamp with time zone NOT NULL DEFAULT now(),
+  updated_at timestamp with time zone NOT NULL DEFAULT now(),
+  CONSTRAINT unique_list_position UNIQUE(list_id, position),
+  CONSTRAINT unique_list_entity UNIQUE(list_id, entity_type, entity_id)
+);
+
+-- Enable Row Level Security
+ALTER TABLE public.user_top_list_items ENABLE ROW LEVEL SECURITY;
+
+-- RLS Policy: Users can manage items in their own lists
+CREATE POLICY "Users can manage their own list items"
+ON public.user_top_list_items
+FOR ALL
+USING (
+  EXISTS (
+    SELECT 1 FROM public.user_top_lists 
+    WHERE id = user_top_list_items.list_id 
+    AND user_id = auth.uid()
+  )
+);
+
+-- RLS Policy: Public list items can be viewed by anyone
+CREATE POLICY "Public list items can be viewed"
+ON public.user_top_list_items
+FOR SELECT
+USING (
+  EXISTS (
+    SELECT 1 FROM public.user_top_lists 
+    WHERE id = user_top_list_items.list_id 
+    AND is_public = true
+  )
+);
+
+-- Create data migration function to move JSON data to relational structure
+CREATE OR REPLACE FUNCTION public.migrate_user_list_items()
+RETURNS void
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  list_record RECORD;
+  item_record JSONB;
+  item_position INTEGER;
+BEGIN
+  -- Iterate through all lists with items
+  FOR list_record IN 
+    SELECT id, items 
+    FROM public.user_top_lists 
+    WHERE items IS NOT NULL AND jsonb_array_length(items) > 0
+  LOOP
+    item_position := 1;
+    
+    -- Iterate through each item in the JSON array
+    FOR item_record IN 
+      SELECT value FROM jsonb_array_elements(list_record.items)
+    LOOP
+      -- Insert into relational table, skip if already exists
+      INSERT INTO public.user_top_list_items (
+        list_id,
+        entity_type,
+        entity_id,
+        position,
+        notes
+      ) VALUES (
+        list_record.id,
+        item_record->>'entity_type',
+        (item_record->>'entity_id')::uuid,
+        item_position,
+        item_record->>'notes'
+      )
+      ON CONFLICT (list_id, entity_type, entity_id) DO NOTHING;
+      
+      item_position := item_position + 1;
+    END LOOP;
+  END LOOP;
+  
+  RAISE NOTICE 'Migration completed successfully';
+END;
+$$;
+
+-- Add performance indexes
+CREATE INDEX IF NOT EXISTS idx_user_list_items_list_position 
+ON public.user_top_list_items (list_id, position);
+
+CREATE INDEX IF NOT EXISTS idx_user_list_items_entity 
+ON public.user_top_list_items (entity_type, entity_id);
+
+CREATE INDEX IF NOT EXISTS idx_user_list_items_list_type 
+ON public.user_top_list_items (list_id, entity_type);
+
+-- Add trigger for updated_at
+CREATE TRIGGER update_user_top_list_items_updated_at
+BEFORE UPDATE ON public.user_top_list_items
+FOR EACH ROW
+EXECUTE FUNCTION public.update_updated_at_column();
+
+-- Run migration to move existing data
+SELECT public.migrate_user_list_items();