v12.0.0 - initial commit

packages/server/lib/loyalty.js

@@ -0,0 +1,78 @@
+const db = require('./db')
+const uuid = require('uuid')
+const _ = require('lodash/fp')
+
+function getAvailablePromoCodes() {
+  const sql = `SELECT * FROM coupons WHERE soft_deleted=false`
+  return db.any(sql)
+}
+
+function getPromoCode(code) {
+  const sql = `SELECT * FROM coupons WHERE code=$1 AND soft_deleted=false`
+  return db.oneOrNone(sql, [code])
+}
+
+function createPromoCode(code, discount) {
+  const sql = `INSERT INTO coupons (id, code, discount) VALUES ($1, $2, $3) RETURNING *`
+  return db.one(sql, [uuid.v4(), code, discount])
+}
+
+function deletePromoCode(id) {
+  const sql = `UPDATE coupons SET soft_deleted=true WHERE id=$1`
+  return db.none(sql, [id])
+}
+
+function getNumberOfAvailablePromoCodes() {
+  const sql = `SELECT COUNT(id) FROM coupons WHERE soft_deleted=false`
+  return db.one(sql).then(res => res.count)
+}
+
+function getAvailableIndividualDiscounts() {
+  const sql = `SELECT * FROM individual_discounts WHERE soft_deleted=false`
+  return db.any(sql).then(res =>
+    _.map(
+      it => ({
+        id: it.id,
+        customerId: it.customer_id,
+        discount: it.discount,
+      }),
+      res,
+    ),
+  )
+}
+
+function getCustomerActiveIndividualDiscount(customerId) {
+  const sql = `SELECT * FROM individual_discounts WHERE customer_id=$1 AND soft_deleted=false LIMIT 1`
+  return db.oneOrNone(sql, [customerId]).then(res => {
+    if (!_.isNil(res)) {
+      return {
+        id: res.id,
+        customerId: res.customer_id,
+        discount: res.discount,
+      }
+    }
+    return res
+  })
+}
+
+function createIndividualDiscount(customerId, discount) {
+  const sql = `INSERT INTO individual_discounts (id, customer_id, discount) VALUES ($1, $2, $3)`
+  return db.none(sql, [uuid.v4(), customerId, discount])
+}
+
+function deleteIndividualDiscount(id) {
+  const sql = `UPDATE individual_discounts SET soft_deleted=true WHERE id=$1`
+  return db.none(sql, [id])
+}
+
+module.exports = {
+  getAvailablePromoCodes,
+  getPromoCode,
+  createPromoCode,
+  deletePromoCode,
+  getNumberOfAvailablePromoCodes,
+  getAvailableIndividualDiscounts,
+  getCustomerActiveIndividualDiscount,
+  createIndividualDiscount,
+  deleteIndividualDiscount,
+}