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| 1 | +import React, { useEffect } from 'react' |
| 2 | + |
| 3 | +import { createTestEnvironment } from '@baseapp-frontend/graphql' |
| 4 | + |
| 5 | +import type { StoryContext, StoryFn } from '@storybook/react' |
| 6 | +import { Observable, OperationDescriptor } from 'relay-runtime' |
| 7 | +import { MockPayloadGenerator } from 'relay-test-utils' |
| 8 | +import { MockResolvers } from 'relay-test-utils/lib/RelayMockPayloadGenerator' |
| 9 | + |
| 10 | +export type DynamicMockResolvers = (operation: OperationDescriptor) => MockResolvers |
| 11 | + |
| 12 | +const withMutationResolver = (Story: StoryFn, context: StoryContext) => { |
| 13 | + const { environment, queueOperationResolver } = context.parameters |
| 14 | + .relayMockEnvironment as ReturnType<typeof createTestEnvironment> |
| 15 | + |
| 16 | + const mockResolvers = context.parameters.mockResolvers || undefined |
| 17 | + const dynamicMockResolvers: DynamicMockResolvers = |
| 18 | + context.parameters.dynamicMockResolvers || undefined |
| 19 | + const mutationError: string = context.parameters.mutationError || undefined |
| 20 | + |
| 21 | + useEffect(() => { |
| 22 | + const originalExecuteMutation = environment.executeMutation |
| 23 | + |
| 24 | + environment.executeMutation = (request) => { |
| 25 | + if (!mutationError) { |
| 26 | + if (dynamicMockResolvers) { |
| 27 | + environment.mock.queueOperationResolver(() => { |
| 28 | + return MockPayloadGenerator.generate( |
| 29 | + request.operation, |
| 30 | + dynamicMockResolvers(request.operation), |
| 31 | + ) |
| 32 | + }) |
| 33 | + } else if (mockResolvers) { |
| 34 | + environment.mock.queueOperationResolver(() => { |
| 35 | + return MockPayloadGenerator.generate(request.operation, mockResolvers) |
| 36 | + }) |
| 37 | + } |
| 38 | + } |
| 39 | + |
| 40 | + const observable = originalExecuteMutation.call(environment, request) |
| 41 | + |
| 42 | + return Observable.create((sink) => { |
| 43 | + if (mutationError) { |
| 44 | + setTimeout(() => { |
| 45 | + sink.error(new Error(mutationError)) |
| 46 | + }, 100) |
| 47 | + } else { |
| 48 | + observable.subscribe({ |
| 49 | + complete: () => { |
| 50 | + setTimeout(() => { |
| 51 | + sink.complete() |
| 52 | + }, 100) |
| 53 | + }, |
| 54 | + }) |
| 55 | + } |
| 56 | + }) |
| 57 | + } |
| 58 | + |
| 59 | + return () => { |
| 60 | + environment.executeMutation = originalExecuteMutation |
| 61 | + } |
| 62 | + }, [environment, queueOperationResolver]) |
| 63 | + |
| 64 | + return <Story /> |
| 65 | +} |
| 66 | + |
| 67 | +export default withMutationResolver |
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