Add Campaign

migrations/000055_create_rewards_table.up.sql

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+-- Create rewards table
+CREATE TABLE rewards (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name VARCHAR(150) NOT NULL,
+    reward_type VARCHAR(50) NOT NULL,     -- VOUCHER, PHYSICAL, DIGITAL, BALANCE
+    cost_points BIGINT NOT NULL,
+    stock INT,                            -- nullable if unlimited (digital rewards)
+    max_per_customer INT DEFAULT 1,
+    tnc JSONB,                            -- sections + rules + expiry_days
+    metadata JSONB,                       -- brand, model, etc.
+    images JSONB,                         -- array of images
+    created_at TIMESTAMP DEFAULT now(),
+    updated_at TIMESTAMP DEFAULT now()
+);
+
+-- Create indexes for better performance
+CREATE INDEX idx_rewards_reward_type ON rewards(reward_type);
+CREATE INDEX idx_rewards_cost_points ON rewards(cost_points);
+CREATE INDEX idx_rewards_created_at ON rewards(created_at);
+CREATE INDEX idx_rewards_stock ON rewards(stock) WHERE stock IS NOT NULL;
+
+-- Add comments
+COMMENT ON TABLE rewards IS 'Rewards catalog for gamification system';
+COMMENT ON COLUMN rewards.reward_type IS 'Type of reward: VOUCHER, PHYSICAL, DIGITAL, BALANCE';
+COMMENT ON COLUMN rewards.cost_points IS 'Points required to redeem this reward';
+COMMENT ON COLUMN rewards.stock IS 'Available quantity (NULL for unlimited digital rewards)';
+COMMENT ON COLUMN rewards.max_per_customer IS 'Maximum times a customer can redeem this reward';
+COMMENT ON COLUMN rewards.tnc IS 'Terms and conditions in JSON format';
+COMMENT ON COLUMN rewards.metadata IS 'Additional reward metadata (brand, model, etc.)';
+COMMENT ON COLUMN rewards.images IS 'Array of image URLs and types';