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9221b7f9b5
make POST requests to /quantity to update the quantity of an existing food item - then mixin the new quantity with the existing food items observable
20 lines
978 B
JavaScript
20 lines
978 B
JavaScript
//@flow
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import FoodItemRecord, { createFoodItem } from '../records/FoodItemRecord';
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import { setById } from '../helpers/ImmutableHelpers';
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import { Map } from 'immutable';
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import location$ from './LocationStream';
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import { getFoodItems, type FoodItemsForLocation } from '../apis/FoodItemsApi';
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import Filter$ from './FilterStream';
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import FilterRecord from '../records/FilterRecord';
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import Quantity$ from './QuantityStream';
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import type { QuantityFragment } from '../constants/QuantityConstants';
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export default location$
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.combineLatest(Filter$)
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.mergeMap(([loc, filter]: [Position, FilterRecord]) => getFoodItems({ loc, filter }))
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.map(({ fooditems = [] }: FoodItemsForLocation) => {
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return fooditems.map(createFoodItem).reduce(setById, new Map());
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})
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.combineLatest(Quantity$, (foodItems: Map<string, FoodItemRecord>, quantities: Map<string, QuantityFragment>) => {
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return foodItems.mergeDeepWith((foodItem, quantity) => foodItem.merge(quantity), quantities);
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});
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