135 lines
4.1 KiB
TypeScript
135 lines
4.1 KiB
TypeScript
/**
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* Use Case: UploadMediaUseCase
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*
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* Handles the business logic for uploading media files.
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*/
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import type { IMediaRepository } from '../../domain/repositories/IMediaRepository';
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import type { MediaStoragePort } from '../ports/MediaStoragePort';
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import type { Logger, UseCaseOutputPort } from '@core/shared/application';
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import { Result } from '@core/shared/application/Result';
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import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
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import { Media } from '../../domain/entities/Media';
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import { v4 as uuidv4 } from 'uuid';
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// Define Multer file type locally since @types/multer is not available
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export interface MulterFile {
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fieldname: string;
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originalname: string;
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encoding: string;
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mimetype: string;
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size: number;
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buffer: Buffer;
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stream: NodeJS.ReadableStream;
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destination: string;
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filename: string;
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path: string;
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}
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export interface UploadMediaInput {
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file: MulterFile;
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uploadedBy: string;
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metadata?: Record<string, any>;
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}
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export interface UploadMediaResult {
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mediaId: string;
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url: string | undefined;
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}
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export type UploadMediaErrorCode =
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| 'UPLOAD_FAILED'
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| 'REPOSITORY_ERROR';
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export class UploadMediaUseCase {
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constructor(
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private readonly mediaRepo: IMediaRepository,
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private readonly mediaStorage: MediaStoragePort,
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private readonly output: UseCaseOutputPort<UploadMediaResult>,
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private readonly logger: Logger,
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) {}
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async execute(
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input: UploadMediaInput,
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): Promise<Result<void, ApplicationErrorCode<UploadMediaErrorCode, { message: string }>>> {
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this.logger.info('[UploadMediaUseCase] Starting media upload', {
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filename: input.file.originalname,
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size: input.file.size,
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uploadedBy: input.uploadedBy,
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});
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try {
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// Upload file to storage service
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const uploadOptions: { filename: string; mimeType: string; metadata?: Record<string, any> } = {
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filename: input.file.originalname,
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mimeType: input.file.mimetype,
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};
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if (input.metadata !== undefined) {
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uploadOptions.metadata = input.metadata;
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}
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const uploadResult = await this.mediaStorage.uploadMedia(input.file.buffer, uploadOptions);
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if (!uploadResult.success || !uploadResult.url) {
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return Result.err<void, ApplicationErrorCode<UploadMediaErrorCode, { message: string }>>({
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code: 'UPLOAD_FAILED',
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details: {
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message:
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uploadResult.errorMessage ?? 'Failed to upload media',
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},
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});
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}
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// Determine media type
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const mediaType: 'image' | 'video' | 'document' = input.file.mimetype.startsWith('image/')
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? 'image'
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: input.file.mimetype.startsWith('video/')
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? 'video'
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: 'document';
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// Create media entity
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const mediaId = uuidv4();
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const mediaProps: Parameters<typeof Media.create>[0] = {
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id: mediaId,
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filename: uploadResult.filename || input.file.originalname,
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originalName: input.file.originalname,
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mimeType: input.file.mimetype,
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size: input.file.size,
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url: uploadResult.url,
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type: mediaType,
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uploadedBy: input.uploadedBy,
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};
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if (input.metadata !== undefined) {
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mediaProps.metadata = input.metadata;
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}
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const media = Media.create(mediaProps);
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// Save to repository
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await this.mediaRepo.save(media);
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const result: UploadMediaResult = {
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mediaId,
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url: uploadResult.url,
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};
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this.output.present(result);
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this.logger.info('[UploadMediaUseCase] Media uploaded successfully', {
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mediaId,
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url: uploadResult.url,
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});
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return Result.ok(undefined);
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} catch (error) {
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const err = error instanceof Error ? error : new Error(String(error));
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this.logger.error('[UploadMediaUseCase] Error uploading media', err, {
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filename: input.file.originalname,
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});
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return Result.err<void, ApplicationErrorCode<UploadMediaErrorCode, { message: string }>>({
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code: 'REPOSITORY_ERROR',
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details: { message: err.message },
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});
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}
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}
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} |