{"version":3,"file":"s3.mjs","names":[],"sources":["../../src/storage/s3.ts"],"sourcesContent":["/**\n * S3-Compatible Storage Implementation\n *\n * Uses the AWS SDK v3 for S3 operations.\n * Works with AWS S3, Cloudflare R2, Minio, and other S3-compatible services.\n */\n\nimport {\n\tS3Client,\n\ttype S3ClientConfig,\n\tPutObjectCommand,\n\tGetObjectCommand,\n\tDeleteObjectCommand,\n\tHeadObjectCommand,\n\tListObjectsV2Command,\n\ttype ListObjectsV2Response,\n} from \"@aws-sdk/client-s3\";\nimport { getSignedUrl } from \"@aws-sdk/s3-request-presigner\";\nimport { z } from \"zod\";\n\nimport type {\n\tStorage,\n\tS3StorageConfig,\n\tUploadResult,\n\tDownloadResult,\n\tListResult,\n\tListOptions,\n\tSignedUploadUrl,\n\tSignedUploadOptions,\n} from \"./types.js\";\nimport { EmDashStorageError } from \"./types.js\";\n\nconst ENV_KEYS = {\n\tendpoint: \"S3_ENDPOINT\",\n\tbucket: \"S3_BUCKET\",\n\taccessKeyId: \"S3_ACCESS_KEY_ID\",\n\tsecretAccessKey: \"S3_SECRET_ACCESS_KEY\",\n\tregion: \"S3_REGION\",\n\tpublicUrl: \"S3_PUBLIC_URL\",\n} as const satisfies Record<keyof S3StorageConfig, string>;\n\nfunction fail(msg: string): never {\n\tthrow new EmDashStorageError(msg, \"MISSING_S3_CONFIG\");\n}\n\nconst s3ConfigSchema = z.object({\n\tendpoint: z.url({ protocol: /^https?$/, error: \"is not a valid http/https URL\" }).optional(),\n\tbucket: z.string().optional(),\n\taccessKeyId: z.string().optional(),\n\tsecretAccessKey: z.string().optional(),\n\tregion: z.string().optional(),\n\tpublicUrl: z.string().optional(),\n});\n\nfunction isConfigKey(key: unknown): key is keyof S3StorageConfig {\n\treturn typeof key === \"string\" && key in ENV_KEYS;\n}\n\n/**\n * Build the merged config: for each field, use the explicit value if present,\n * otherwise fall back to the corresponding S3_* env var.  Validate once on the\n * final merged result so a malformed env var never breaks the build when the\n * caller provides that field explicitly.\n */\nexport function resolveS3Config(partial: Record<string, unknown>): S3StorageConfig {\n\tconst raw: Record<string, unknown> = {};\n\tfor (const [field, envKey] of Object.entries(ENV_KEYS)) {\n\t\tconst explicit = partial[field];\n\t\tif (explicit !== undefined && explicit !== \"\") {\n\t\t\traw[field] = explicit;\n\t\t\tcontinue;\n\t\t}\n\t\tconst envVal = typeof process !== \"undefined\" && process.env ? process.env[envKey] : undefined;\n\t\tif (envVal !== undefined && envVal !== \"\") {\n\t\t\traw[field] = envVal;\n\t\t}\n\t}\n\n\tconst result = s3ConfigSchema.safeParse(raw);\n\tif (!result.success) {\n\t\tconst issue = result.error.issues[0];\n\t\tconst pathKey = issue?.path[0];\n\t\tif (!issue || !isConfigKey(pathKey)) fail(\"S3 config validation failed\");\n\t\tconst fromExplicit = partial[pathKey] !== undefined && partial[pathKey] !== \"\";\n\t\tconst label = fromExplicit ? `s3({ ${pathKey} })` : ENV_KEYS[pathKey];\n\t\tfail(`${label} ${issue.message}`);\n\t}\n\tconst merged = result.data;\n\n\tconst endpoint = merged.endpoint;\n\tconst bucket = merged.bucket;\n\tif (!endpoint || !bucket) {\n\t\tconst missing: string[] = [];\n\t\tif (!endpoint) missing.push(`endpoint: set ${ENV_KEYS.endpoint} or pass endpoint to s3({...})`);\n\t\tif (!bucket) missing.push(`bucket: set ${ENV_KEYS.bucket} or pass bucket to s3({...})`);\n\t\tfail(`missing required S3 config: ${missing.join(\"; \")}`);\n\t}\n\tconst accessKeyId = merged.accessKeyId;\n\tconst secretAccessKey = merged.secretAccessKey;\n\tif (accessKeyId && !secretAccessKey) {\n\t\tfail(\n\t\t\t`S3 credentials incomplete: accessKeyId is set but secretAccessKey is missing (set ${ENV_KEYS.secretAccessKey} or pass secretAccessKey to s3({...}))`,\n\t\t);\n\t}\n\tif (secretAccessKey && !accessKeyId) {\n\t\tfail(\n\t\t\t`S3 credentials incomplete: secretAccessKey is set but accessKeyId is missing (set ${ENV_KEYS.accessKeyId} or pass accessKeyId to s3({...}))`,\n\t\t);\n\t}\n\n\treturn { ...merged, endpoint, bucket };\n}\n\nconst TRAILING_SLASH_PATTERN = /\\/$/;\n\n/** Type guard for AWS SDK errors (have a `name` property) */\nfunction hasErrorName(error: unknown): error is Error & { name: string } {\n\treturn error instanceof Error && typeof error.name === \"string\";\n}\n\n/**\n * S3-compatible storage implementation\n */\nexport class S3Storage implements Storage {\n\tprivate client: S3Client;\n\tprivate bucket: string;\n\tprivate publicUrl?: string;\n\tprivate endpoint: string;\n\n\tconstructor(config: S3StorageConfig) {\n\t\tthis.bucket = config.bucket;\n\t\tthis.publicUrl = config.publicUrl;\n\t\tthis.endpoint = config.endpoint;\n\n\t\t// S3ClientConfig types `credentials` as required, but the SDK accepts\n\t\t// omitted credentials at runtime (falls back to the provider chain).\n\t\t/* eslint-disable typescript/no-unsafe-type-assertion -- upstream @aws-sdk/client-s3 overstates required fields */\n\t\tconst clientConfig = {\n\t\t\tendpoint: config.endpoint,\n\t\t\tregion: config.region || \"auto\",\n\t\t\t// Required for R2 and some S3-compatible services\n\t\t\tforcePathStyle: true,\n\t\t\t...(config.accessKeyId && config.secretAccessKey\n\t\t\t\t? {\n\t\t\t\t\t\tcredentials: {\n\t\t\t\t\t\t\taccessKeyId: config.accessKeyId,\n\t\t\t\t\t\t\tsecretAccessKey: config.secretAccessKey,\n\t\t\t\t\t\t},\n\t\t\t\t\t}\n\t\t\t\t: {}),\n\t\t} as S3ClientConfig;\n\t\t/* eslint-enable typescript/no-unsafe-type-assertion */\n\t\tthis.client = new S3Client(clientConfig);\n\t}\n\n\tasync upload(options: {\n\t\tkey: string;\n\t\tbody: Buffer | Uint8Array | ReadableStream<Uint8Array>;\n\t\tcontentType: string;\n\t}): Promise<UploadResult> {\n\t\ttry {\n\t\t\t// Convert ReadableStream to Buffer if needed\n\t\t\tlet body: Buffer | Uint8Array;\n\t\t\tif (options.body instanceof ReadableStream) {\n\t\t\t\tconst chunks: Uint8Array[] = [];\n\t\t\t\tconst reader = options.body.getReader();\n\t\t\t\twhile (true) {\n\t\t\t\t\tconst { done, value } = await reader.read();\n\t\t\t\t\tif (done) break;\n\t\t\t\t\tchunks.push(value);\n\t\t\t\t}\n\t\t\t\tbody = Buffer.concat(chunks);\n\t\t\t} else {\n\t\t\t\tbody = options.body;\n\t\t\t}\n\n\t\t\tawait this.client.send(\n\t\t\t\tnew PutObjectCommand({\n\t\t\t\t\tBucket: this.bucket,\n\t\t\t\t\tKey: options.key,\n\t\t\t\t\tBody: body,\n\t\t\t\t\tContentType: options.contentType,\n\t\t\t\t}),\n\t\t\t);\n\n\t\t\treturn {\n\t\t\t\tkey: options.key,\n\t\t\t\turl: this.getPublicUrl(options.key),\n\t\t\t\tsize: body.length,\n\t\t\t};\n\t\t} catch (error) {\n\t\t\tthrow new EmDashStorageError(`Failed to upload file: ${options.key}`, \"UPLOAD_FAILED\", error);\n\t\t}\n\t}\n\n\tasync download(key: string): Promise<DownloadResult> {\n\t\ttry {\n\t\t\tconst response = await this.client.send(\n\t\t\t\tnew GetObjectCommand({\n\t\t\t\t\tBucket: this.bucket,\n\t\t\t\t\tKey: key,\n\t\t\t\t}),\n\t\t\t);\n\n\t\t\tif (!response.Body) {\n\t\t\t\tthrow new EmDashStorageError(`File not found: ${key}`, \"NOT_FOUND\");\n\t\t\t}\n\n\t\t\t// Convert SDK stream to web ReadableStream\n\t\t\tconst body = response.Body.transformToWebStream();\n\n\t\t\treturn {\n\t\t\t\tbody,\n\t\t\t\tcontentType: response.ContentType || \"application/octet-stream\",\n\t\t\t\tsize: response.ContentLength || 0,\n\t\t\t};\n\t\t} catch (error) {\n\t\t\tif (\n\t\t\t\terror instanceof EmDashStorageError ||\n\t\t\t\t(hasErrorName(error) && error.name === \"NoSuchKey\")\n\t\t\t) {\n\t\t\t\tthrow new EmDashStorageError(`File not found: ${key}`, \"NOT_FOUND\", error);\n\t\t\t}\n\t\t\tthrow new EmDashStorageError(`Failed to download file: ${key}`, \"DOWNLOAD_FAILED\", error);\n\t\t}\n\t}\n\n\tasync delete(key: string): Promise<void> {\n\t\ttry {\n\t\t\tawait this.client.send(\n\t\t\t\tnew DeleteObjectCommand({\n\t\t\t\t\tBucket: this.bucket,\n\t\t\t\t\tKey: key,\n\t\t\t\t}),\n\t\t\t);\n\t\t} catch 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this.client.send(\n\t\t\t\tnew ListObjectsV2Command({\n\t\t\t\t\tBucket: this.bucket,\n\t\t\t\t\tPrefix: options.prefix,\n\t\t\t\t\tMaxKeys: options.limit,\n\t\t\t\t\tContinuationToken: options.cursor,\n\t\t\t\t}),\n\t\t\t)) as ListObjectsV2Response;\n\n\t\t\treturn {\n\t\t\t\tfiles: (response.Contents || []).map(\n\t\t\t\t\t(item: { Key?: string; Size?: number; LastModified?: Date; ETag?: string }) => ({\n\t\t\t\t\t\tkey: item.Key!,\n\t\t\t\t\t\tsize: item.Size || 0,\n\t\t\t\t\t\tlastModified: item.LastModified || new Date(),\n\t\t\t\t\t\tetag: item.ETag,\n\t\t\t\t\t}),\n\t\t\t\t),\n\t\t\t\tnextCursor: response.NextContinuationToken,\n\t\t\t};\n\t\t} catch (error) {\n\t\t\tthrow new EmDashStorageError(\"Failed to list files\", \"LIST_FAILED\", error);\n\t\t}\n\t}\n\n\tasync getSignedUploadUrl(options: SignedUploadOptions): Promise<SignedUploadUrl> {\n\t\ttry {\n\t\t\tconst expiresIn = options.expiresIn || 3600; // 1 hour default\n\n\t\t\tconst command = new PutObjectCommand({\n\t\t\t\tBucket: this.bucket,\n\t\t\t\tKey: options.key,\n\t\t\t\tContentType: options.contentType,\n\t\t\t\tContentLength: options.size,\n\t\t\t});\n\n\t\t\tconst url = await getSignedUrl(this.client, command, { expiresIn });\n\n\t\t\tconst expiresAt = new Date(Date.now() + expiresIn * 1000).toISOString();\n\n\t\t\treturn {\n\t\t\t\turl,\n\t\t\t\tmethod: \"PUT\",\n\t\t\t\theaders: {\n\t\t\t\t\t\"Content-Type\": options.contentType,\n\t\t\t\t\t...(options.size !== undefined ? { \"Content-Length\": String(options.size) } : {}),\n\t\t\t\t},\n\t\t\t\texpiresAt,\n\t\t\t};\n\t\t} catch (error) {\n\t\t\tthrow new EmDashStorageError(\n\t\t\t\t`Failed to generate signed URL for: ${options.key}`,\n\t\t\t\t\"SIGNED_URL_FAILED\",\n\t\t\t\terror,\n\t\t\t);\n\t\t}\n\t}\n\n\tgetPublicUrl(key: string): string {\n\t\tif (this.publicUrl) {\n\t\t\treturn `${this.publicUrl.replace(TRAILING_SLASH_PATTERN, \"\")}/${key}`;\n\t\t}\n\t\t// No public URL configured; defer to the 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