Open Source Release
31 lines
1.8 KiB
SQL
31 lines
1.8 KiB
SQL
-- +goose Up
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-- Append-only ledger, same doctrine as cash_transactions (006_cash.sql):
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-- balance is never a stored column, always SUM(points) on read — a
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-- mis-entered correction gets a compensating row of the same type, not an
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-- edit/delete. Unlike cash, points really does have one meaningful
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-- "at most once" fact: an order/batch is only ever accrued once, enforced
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-- below as a real constraint (dedupe_key in internal/clientnotify is an
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-- app-computed analog of the same idea; here the natural key already is
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-- just "this order").
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CREATE TABLE loyalty_transactions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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client_id UUID NOT NULL REFERENCES clients(id) ON DELETE CASCADE,
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type TEXT NOT NULL CHECK (type IN ('accrual', 'redemption', 'adjustment')),
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points INT NOT NULL CHECK (points <> 0),
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order_id UUID REFERENCES orders(id) ON DELETE SET NULL,
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cartridge_batch_id UUID REFERENCES cartridge_batches(id) ON DELETE SET NULL,
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note TEXT,
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created_by_staff_id UUID NOT NULL,
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created_by_staff_name TEXT NOT NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
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);
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CREATE INDEX loyalty_transactions_client_id_idx ON loyalty_transactions (client_id, created_at DESC);
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CREATE UNIQUE INDEX loyalty_transactions_order_accrual_idx
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ON loyalty_transactions (order_id) WHERE type = 'accrual' AND order_id IS NOT NULL;
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CREATE UNIQUE INDEX loyalty_transactions_batch_accrual_idx
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ON loyalty_transactions (cartridge_batch_id) WHERE type = 'accrual' AND cartridge_batch_id IS NOT NULL;
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ALTER TABLE settings ADD COLUMN loyalty_enabled BOOLEAN NOT NULL DEFAULT FALSE;
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ALTER TABLE settings ADD COLUMN loyalty_accrual_percent NUMERIC(5, 2) NOT NULL DEFAULT 0;
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