WIP

src/digitise/index.js

@@ -1,6 +1,11 @@
 'use strict';
 const deepMap = require('deep-map');
 const reducer = require('./reducer');
+const {
+  getInitialState,
+  stateManager
+} = require('./state-manager');
+const statuses = require('./statuses');
 const { pickBy, isArray, isObject, mapValues, pick, setWith, find } = require('lodash');
 const {
   getAddress,
@@ -229,5 +234,8 @@ module.exports = {
   extractData,
   prepareData,
   filterScalars,
-  reducer
+  reducer,
+  getInitialState,
+  stateManager,
+  statuses
 };

src/digitise/state-manager.js

@@ -0,0 +1,36 @@
+const { reducer, statuses } = require('@envage/water-abstraction-helpers').digitise;
+const { STATUS_IN_PROGRESS } = statuses;
+
+/**
+ * Gets initial state for the specified licence row from the permit repo
+ * @param {Object} licence  - row from permit repo data
+ * @return {Object} initial state for state manager
+ */
+const getInitialState = (licence) => {
+  return {
+    licence: licence.licence_data_value,
+    status: STATUS_IN_PROGRESS,
+    notes: []
+  };
+};
+
+/**
+ * Gets final state based on:
+ * @param {String} initialState - the immutable base licence data from permit repo
+ * @param {Array} actions - an array of actions describing mutations to the data
+ * @param {Function} reducer - a function which accepts the state and an action, and returns the next state
+ */
+const stateManager = (initialState, actions = []) => {
+  let state = initialState;
+
+  for (const action of actions) {
+    state = reducer(state, action);
+  }
+
+  return state;
+};
+
+module.exports = {
+  getInitialState,
+  stateManager
+};