spreader stuff

database/migrations/user_spreader_system.sql

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+-- Update user equipment for better spreader support
+-- Note: we already have 'manufacturer' and 'model' columns, so let's use those
+-- Add brand as alias for manufacturer for consistency with new API
+ALTER TABLE user_equipment 
+ADD COLUMN IF NOT EXISTS brand VARCHAR(100),
+ADD COLUMN IF NOT EXISTS notes TEXT;
+
+-- Copy existing manufacturer data to brand field for consistency
+UPDATE user_equipment SET brand = manufacturer WHERE brand IS NULL AND manufacturer IS NOT NULL;
+
+-- Create table to store product-specific spreader settings
+-- This links products to specific spreader settings
+CREATE TABLE IF NOT EXISTS product_spreader_settings (
+    id SERIAL PRIMARY KEY,
+    product_id INTEGER REFERENCES products(id) ON DELETE CASCADE,
+    user_product_id INTEGER REFERENCES user_products(id) ON DELETE CASCADE,
+    spreader_brand VARCHAR(100) NOT NULL,
+    spreader_model VARCHAR(100),
+    setting_value VARCHAR(20) NOT NULL,
+    rate_description VARCHAR(200), -- e.g., "1 lb nitrogen per 1000 sq ft"
+    notes TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    
+    -- Ensure we have either product_id or user_product_id, but not both
+    CHECK (
+        (product_id IS NOT NULL AND user_product_id IS NULL) OR
+        (product_id IS NULL AND user_product_id IS NOT NULL)
+    )
+);
+
+-- Create indexes for better performance
+CREATE INDEX IF NOT EXISTS idx_product_spreader_settings_product ON product_spreader_settings(product_id);
+CREATE INDEX IF NOT EXISTS idx_product_spreader_settings_user_product ON product_spreader_settings(user_product_id);
+CREATE INDEX IF NOT EXISTS idx_product_spreader_settings_brand ON product_spreader_settings(spreader_brand);
+CREATE INDEX IF NOT EXISTS idx_user_equipment_brand_model ON user_equipment(brand, model);
+
+-- Add trigger to update updated_at timestamp
+CREATE OR REPLACE FUNCTION update_product_spreader_settings_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+DROP TRIGGER IF EXISTS update_product_spreader_settings_updated_at_trigger ON product_spreader_settings;
+CREATE TRIGGER update_product_spreader_settings_updated_at_trigger
+    BEFORE UPDATE ON product_spreader_settings
+    FOR EACH ROW
+    EXECUTE PROCEDURE update_product_spreader_settings_updated_at();
+
+-- Drop the old spreader_settings table since we're using a different approach
+DROP TABLE IF EXISTS spreader_settings;
+
+SELECT 'Updated spreader system for user-defined spreaders and product settings!' as migration_status;