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feat(api): introduce ADD_PHOTOGRAPH_TO_DIGITAL_TEXT_PAGE (#541)
* implement DigitalText.addPhotographToPage * add handler for PHOTOGRAPH_ADDED_TO_DIGITAL_TEXT_PAGE * add happy path test ADD_PHOTOGRAPH_TO_DIGITAL_TEXT_PAGE * add invalid test cases * add type validation test ADD_PHOTOGRAPH_TO_DIGITAL_TEXT_PAGE * fix tests for ADD_PHOTOGRAPH_TO_DIGITAL_TEXT_PAGE
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59 changes: 59 additions & 0 deletions
59
...dd-photograph-to-digital-text-page/add-photograph-to-digital-text-page.command-handler.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| import { AggregateType } from '@coscrad/api-interfaces'; | ||
| import { CommandHandler } from '@coscrad/commands'; | ||
| import { Valid } from '../../../../../domain/domainModelValidators/Valid'; | ||
| import { DeluxeInMemoryStore } from '../../../../../domain/types/DeluxeInMemoryStore'; | ||
| import { InMemorySnapshot } from '../../../../../domain/types/ResourceType'; | ||
| import { InternalError, isInternalError } from '../../../../../lib/errors/InternalError'; | ||
| import { isNotFound } from '../../../../../lib/types/not-found'; | ||
| import { ResultOrError } from '../../../../../types/ResultOrError'; | ||
| import { BaseUpdateCommandHandler } from '../../../shared/command-handlers/base-update-command-handler'; | ||
| import { BaseEvent, IEventPayload } from '../../../shared/events/base-event.entity'; | ||
| import { EventRecordMetadata } from '../../../shared/events/types/EventRecordMetadata'; | ||
| import { DigitalText } from '../../entities'; | ||
| import { AddPhotographToDigitalTextPage } from './add-photograph-to-digital-text-page.command'; | ||
| import { PhotographAddedToDigitalTextPage } from './photograph-added-to-digital-text-page.event'; | ||
|
|
||
| @CommandHandler(AddPhotographToDigitalTextPage) | ||
| export class AddPhotographToDigitalTextPageCommandHandler extends BaseUpdateCommandHandler<DigitalText> { | ||
| protected async fetchRequiredExternalState({ | ||
| photographId, | ||
| }: AddPhotographToDigitalTextPage): Promise<InMemorySnapshot> { | ||
| const photographSearchResult = await this.repositoryProvider | ||
| .forResource(AggregateType.photograph) | ||
| .fetchById(photographId); | ||
|
|
||
| if (isInternalError(photographSearchResult)) { | ||
| throw new InternalError( | ||
| `Failed to ADD_PHOTOGRAPH_TO_DIGITAL_TEXT due to invalid existing state`, | ||
| [photographSearchResult] | ||
| ); | ||
| } | ||
|
|
||
| return new DeluxeInMemoryStore({ | ||
| [AggregateType.photograph]: isNotFound(photographSearchResult) | ||
| ? [] | ||
| : [photographSearchResult], | ||
| }).fetchFullSnapshotInLegacyFormat(); | ||
| } | ||
|
|
||
| protected actOnInstance( | ||
| digitalText: DigitalText, | ||
| { pageIdentifier, photographId }: AddPhotographToDigitalTextPage | ||
| ): ResultOrError<DigitalText> { | ||
| return digitalText.addPhotographToPage(pageIdentifier, photographId); | ||
| } | ||
|
|
||
| protected validateExternalState( | ||
| _state: InMemorySnapshot, | ||
| _instance: DigitalText | ||
| ): InternalError | Valid { | ||
| return Valid; | ||
| } | ||
|
|
||
| protected buildEvent( | ||
| payload: AddPhotographToDigitalTextPage, | ||
| eventMeta: EventRecordMetadata | ||
| ): BaseEvent<IEventPayload> { | ||
| return new PhotographAddedToDigitalTextPage(payload, eventMeta); | ||
| } | ||
| } |
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