Mega push vol 4

supabase/migrations/014_document_enhancements.sql

@@ -0,0 +1,101 @@
+-- Migration: Document enhancements for file paths, positions, and kanban type
+-- Adds path column for Google Drive-like unique paths
+-- Adds position column for file ordering within folders
+-- Extends type enum to include 'kanban' for kanban boards as files
+
+-- Add path column (computed from parent hierarchy)
+ALTER TABLE documents ADD COLUMN IF NOT EXISTS path TEXT;
+
+-- Add position column for ordering files within a folder
+ALTER TABLE documents ADD COLUMN IF NOT EXISTS position INTEGER DEFAULT 0;
+
+-- Update the type constraint to allow 'kanban'
+-- First drop the existing constraint if it exists
+ALTER TABLE documents DROP CONSTRAINT IF EXISTS documents_type_check;
+
+-- Add new constraint with kanban type
+ALTER TABLE documents ADD CONSTRAINT documents_type_check 
+  CHECK (type IN ('folder', 'document', 'kanban'));
+
+-- Function to compute and update document path
+CREATE OR REPLACE FUNCTION compute_document_path(doc_id UUID)
+RETURNS TEXT AS $$
+DECLARE
+  result TEXT := '';
+  current_doc RECORD;
+  path_parts TEXT[] := '{}';
+BEGIN
+  -- Start with the document itself
+  SELECT * INTO current_doc FROM documents WHERE id = doc_id;
+  
+  IF NOT FOUND THEN
+    RETURN NULL;
+  END IF;
+  
+  -- Build path from document up to root
+  WHILE current_doc IS NOT NULL LOOP
+    path_parts := array_prepend(current_doc.name, path_parts);
+    
+    IF current_doc.parent_id IS NULL THEN
+      EXIT;
+    END IF;
+    
+    SELECT * INTO current_doc FROM documents WHERE id = current_doc.parent_id;
+  END LOOP;
+  
+  -- Join with '/' separator
+  result := '/' || array_to_string(path_parts, '/');
+  
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Function to update path on insert/update
+CREATE OR REPLACE FUNCTION update_document_path()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.path := compute_document_path(NEW.id);
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Trigger to auto-update path
+DROP TRIGGER IF EXISTS documents_path_trigger ON documents;
+CREATE TRIGGER documents_path_trigger
+  BEFORE INSERT OR UPDATE OF name, parent_id ON documents
+  FOR EACH ROW
+  EXECUTE FUNCTION update_document_path();
+
+-- Function to get next position in folder
+CREATE OR REPLACE FUNCTION get_next_document_position(folder_id UUID)
+RETURNS INTEGER AS $$
+DECLARE
+  max_pos INTEGER;
+BEGIN
+  SELECT COALESCE(MAX(position), -1) + 1 INTO max_pos
+  FROM documents
+  WHERE parent_id IS NOT DISTINCT FROM folder_id;
+  
+  RETURN max_pos;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Update existing documents to have computed paths
+UPDATE documents SET path = compute_document_path(id) WHERE path IS NULL;
+
+-- Update existing documents to have sequential positions within their folders
+WITH numbered AS (
+  SELECT id, ROW_NUMBER() OVER (PARTITION BY parent_id ORDER BY created_at) - 1 AS new_pos
+  FROM documents
+  WHERE position IS NULL OR position = 0
+)
+UPDATE documents d
+SET position = n.new_pos
+FROM numbered n
+WHERE d.id = n.id;
+
+-- Create index on path for faster lookups
+CREATE INDEX IF NOT EXISTS idx_documents_path ON documents(path);
+
+-- Create index on parent_id and position for faster ordering
+CREATE INDEX IF NOT EXISTS idx_documents_parent_position ON documents(parent_id, position);