Add Supabase database schema with RLS policies

- Define palettes and colors tables with proper constraints
- Add Row Level Security policies for user data isolation
- Include indexes for query performance
- Add helper functions for data migration from Orbit.js

Author: chuckcarpenter

supabase-schema.sql

@@ -0,0 +1,259 @@
+-- ============================================
+-- Swach Supabase Database Schema
+-- ============================================
+
+-- Enable UUID extension for generating IDs
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+-- ============================================
+-- Palettes Table
+-- ============================================
+CREATE TABLE IF NOT EXISTS palettes (
+  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
+  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+  name TEXT,
+  is_color_history BOOLEAN DEFAULT FALSE,
+  is_favorite BOOLEAN DEFAULT FALSE,
+  is_locked BOOLEAN DEFAULT FALSE,
+  selected_color_index INTEGER DEFAULT 0,
+  color_order JSONB DEFAULT '[]'::jsonb,
+
+  -- Constraints
+  CONSTRAINT palettes_user_not_null CHECK (user_id IS NOT NULL),
+  CONSTRAINT palettes_single_color_history_per_user UNIQUE (user_id, is_color_history) 
+    DEFERRABLE INITIALLY DEFERRED,
+  CONSTRAINT palettes_name_length CHECK (char_length(name) <= 255)
+);
+
+-- ============================================
+-- Colors Table  
+-- ============================================
+CREATE TABLE IF NOT EXISTS colors (
+  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
+  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE,
+  palette_id UUID REFERENCES palettes(id) ON DELETE CASCADE,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+  name TEXT,
+  r INTEGER NOT NULL CHECK (r >= 0 AND r <= 255),
+  g INTEGER NOT NULL CHECK (g >= 0 AND g <= 255),
+  b INTEGER NOT NULL CHECK (b >= 0 AND b <= 255),
+  a REAL DEFAULT 1.0 CHECK (a >= 0.0 AND a <= 1.0),
+
+  -- Constraints
+  CONSTRAINT colors_user_not_null CHECK (user_id IS NOT NULL),
+  CONSTRAINT colors_palette_not_null CHECK (palette_id IS NOT NULL),
+  CONSTRAINT colors_name_length CHECK (char_length(name) <= 255)
+);
+
+-- ============================================
+-- Indexes for Performance
+-- ============================================
+
+-- Palettes indexes
+CREATE INDEX IF NOT EXISTS idx_palettes_user_id ON palettes(user_id);
+CREATE INDEX IF NOT EXISTS idx_palettes_created_at ON palettes(created_at);
+CREATE INDEX IF NOT EXISTS idx_palettes_is_favorite ON palettes(is_favorite) WHERE is_favorite = TRUE;
+CREATE INDEX IF NOT EXISTS idx_palettes_is_color_history ON palettes(is_color_history) WHERE is_color_history = TRUE;
+
+-- Colors indexes  
+CREATE INDEX IF NOT EXISTS idx_colors_user_id ON colors(user_id);
+CREATE INDEX IF NOT EXISTS idx_colors_palette_id ON colors(palette_id);
+CREATE INDEX IF NOT EXISTS idx_colors_created_at ON colors(created_at);
+
+-- GIN indexes for JSONB columns
+CREATE INDEX IF NOT EXISTS idx_palettes_color_order ON palettes USING GIN(color_order);
+
+-- ============================================
+-- Row Level Security (RLS) Policies
+-- ============================================
+
+-- Enable RLS on all tables
+ALTER TABLE palettes ENABLE ROW LEVEL SECURITY;
+ALTER TABLE colors ENABLE ROW LEVEL SECURITY;
+
+-- Policy: Users can view their own palettes
+CREATE POLICY "Users can view own palettes" ON palettes
+  FOR SELECT USING (auth.uid() = user_id);
+
+-- Policy: Users can insert their own palettes
+CREATE POLICY "Users can insert own palettes" ON palettes  
+  FOR INSERT WITH CHECK (auth.uid() = user_id);
+
+-- Policy: Users can update their own palettes
+CREATE POLICY "Users can update own palettes" ON palettes
+  FOR UPDATE USING (auth.uid() = user_id);
+
+-- Policy: Users can delete their own palettes
+CREATE POLICY "Users can delete own palettes" ON palettes
+  FOR DELETE USING (auth.uid() = user_id);
+
+-- Policy: Users can view their own colors
+CREATE POLICY "Users can view own colors" ON colors
+  FOR SELECT USING (auth.uid() = user_id);
+
+-- Policy: Users can insert their own colors
+CREATE POLICY "Users can insert own colors" ON colors
+  FOR INSERT WITH CHECK (auth.uid() = user_id);
+
+-- Policy: Users can update their own colors  
+CREATE POLICY "Users can update own colors" ON colors
+  FOR UPDATE USING (auth.uid() = user_id);
+
+-- Policy: Users can delete their own colors
+CREATE POLICY "Users can delete own colors" ON colors
+  FOR DELETE USING (auth.uid() = user_id);
+
+-- ============================================
+-- Functions for Data Management
+-- ============================================
+
+-- Function to automatically update updated_at timestamp
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at = NOW();
+  RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+-- Triggers to auto-update updated_at
+CREATE TRIGGER update_palettes_updated_at
+  BEFORE UPDATE ON palettes
+  FOR EACH ROW EXECUTE PROCEDURE update_updated_at_column();
+
+CREATE TRIGGER update_colors_updated_at
+  BEFORE UPDATE ON colors  
+  FOR EACH ROW EXECUTE PROCEDURE update_updated_at_column();
+
+-- ============================================
+-- Sample Data for Testing
+-- ============================================
+
+-- Function to create sample color history palette for new users
+CREATE OR REPLACE FUNCTION create_sample_color_history_for_user(user_uuid UUID)
+RETURNS UUID AS $$
+DECLARE
+  palette_uuid UUID;
+  color_uuid1 UUID;
+  color_uuid2 UUID;
+  color_uuid3 UUID;
+BEGIN
+  -- Create color history palette
+  INSERT INTO palettes (user_id, name, is_color_history, selected_color_index, color_order)
+  VALUES (
+    user_uuid,
+    'Color History',
+    TRUE,
+    0,
+    '[]'::jsonb
+  )
+  RETURNING id INTO palette_uuid;
+  
+  -- Create sample colors
+  INSERT INTO colors (user_id, palette_id, name, r, g, b, a)
+  VALUES 
+    (user_uuid, palette_uuid, 'Pure Black', 0, 0, 0, 1.0),
+    (user_uuid, palette_uuid, 'Pure White', 255, 255, 255, 1.0),
+    (user_uuid, palette_uuid, 'Pure Red', 255, 0, 0, 1.0)
+  RETURNING id INTO color_uuid1, color_uuid2, color_uuid3;
+  
+  -- Update color_order with the color references
+  UPDATE palettes 
+  SET color_order = jsonb_build_array(
+    jsonb_build_object('type', 'color', 'id', color_uuid1),
+    jsonb_build_object('type', 'color', 'id', color_uuid2), 
+    jsonb_build_object('type', 'color', 'id', color_uuid3)
+  )
+  WHERE id = palette_uuid;
+  
+  RETURN palette_uuid;
+END;
+$$ LANGUAGE plpgsql;
+
+-- ============================================
+-- Views for Common Queries
+-- ============================================
+
+-- View: Palettes with colors preloaded
+CREATE OR REPLACE VIEW palettes_with_colors AS
+SELECT 
+  p.*,
+  COALESCE(
+    jsonb_agg(
+      jsonb_build_object(
+        'type', 'color',
+        'id', c.id,
+        'attributes', jsonb_build_object(
+          'name', c.name,
+          'r', c.r,
+          'g', c.g, 
+          'b', c.b,
+          'a', c.a,
+          'created_at', c.created_at
+        )
+      )
+    ) FILTER (WHERE c.id IS NOT NULL),
+    '[]'::jsonb
+  ) as colors
+FROM palettes p
+LEFT JOIN colors c ON c.palette_id = p.id
+WHERE p.user_id = auth.uid()
+GROUP BY p.id, p.user_id, p.name, p.is_color_history, p.is_favorite, p.is_locked, 
+         p.selected_color_index, p.color_order, p.created_at, p.updated_at;
+
+-- ============================================
+-- Migration Helper Functions
+-- ============================================
+
+-- Function to migrate from exported Orbit.js data
+CREATE OR REPLACE FUNCTION migrate_orbit_palette_data(
+  user_uuid UUID,
+  palette_data JSONB,
+  color_data JSONB
+)
+RETURNS UUID AS $$
+DECLARE
+  palette_uuid UUID;
+BEGIN
+  -- Insert palette
+  INSERT INTO palettes (user_id, name, is_color_history, is_favorite, is_locked, selected_color_index, color_order)
+  VALUES (
+    user_uuid,
+    palette_data->>'name',
+    (palette_data->>'isColorHistory')::BOOLEAN,
+    (palette_data->>'isFavorite')::BOOLEAN,
+    (palette_data->>'isLocked')::BOOLEAN,
+    COALESCE((palette_data->>'selectedColorIndex')::INTEGER, 0),
+    COALESCE(palette_data->>'colorOrder', '[]'::jsonb)
+  )
+  RETURNING id INTO palette_uuid;
+  
+  -- Return the new palette UUID for relationships
+  RETURN palette_uuid;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION migrate_orbit_color_data(
+  user_uuid UUID,
+  palette_uuid UUID,
+  color_data JSONB
+)
+RETURNS UUID AS $$
+BEGIN
+  -- Insert color
+  INSERT INTO colors (user_id, palette_id, name, r, g, b, a)
+  VALUES (
+    user_uuid,
+    palette_uuid,
+    color_data->>'name',
+    (color_data->>'r')::INTEGER,
+    (color_data->>'g')::INTEGER,
+    (color_data->>'b')::INTEGER,
+    COALESCE((color_data->>'a')::REAL, 1.0)
+  )
+  RETURNING id;
+END;
+$$ LANGUAGE plpgsql;