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Type-safe operations with error handling\r\n * - Convenient methods for common operations\r\n * - Logging and performance tracking\r\n * - Standardized error handling\r\n */\r\n\r\nimport { logger } from \"../utils/logger.ts\";\r\nimport { environment } from \"../config/environment.ts\";\r\n\r\n// Re-export Val Town's blob API for direct access if needed\r\nexport { blob as valtownBlob } from \"https://esm.town/v/std/blob\";\r\n\r\n/**\r\n * Blob metadata interface\r\n */\r\nexport interface BlobMetadata {\r\n key: string;\r\n size: number;\r\n lastModified: string;\r\n}\r\n\r\n/**\r\n * Blob operation result\r\n */\r\nexport interface BlobOperationResult {\r\n success: boolean;\r\n data?: T;\r\n error?: string;\r\n metadata?: {\r\n operation: string;\r\n key: string;\r\n duration: number;\r\n };\r\n}\r\n\r\n/**\r\n * Blob service error class\r\n */\r\nexport class BlobServiceError extends Error {\r\n constructor(\r\n message: string,\r\n public operation: string,\r\n public key?: string,\r\n public originalError?: Error\r\n ) {\r\n super(message);\r\n this.name = \"BlobServiceError\";\r\n }\r\n}\r\n\r\n/**\r\n * Generic Blob Service Class\r\n */\r\nexport class BlobService {\r\n private readonly keyPrefix: string;\r\n\r\n constructor(keyPrefix: string = \"\") {\r\n this.keyPrefix = keyPrefix;\r\n }\r\n\r\n /**\r\n * Get the full key with prefix\r\n */\r\n private getFullKey(key: string): string {\r\n return this.keyPrefix ? `${this.keyPrefix}/${key}` : key;\r\n }\r\n\r\n /**\r\n * Get blob data as Response object\r\n */\r\n async get(key: string): Promise> {\r\n const startTime = performance.now();\r\n const fullKey = this.getFullKey(key);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n const response = await blob.get(fullKey);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blob retrieved successfully\", {\r\n key: fullKey,\r\n size: response.headers.get(\"content-length\"),\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n data: response,\r\n metadata: {\r\n operation: \"get\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to get blob\", {\r\n key: fullKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to get blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"get\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Set blob data\r\n */\r\n async set(key: string, value: BodyInit): Promise> {\r\n const startTime = performance.now();\r\n const fullKey = this.getFullKey(key);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n await blob.set(fullKey, value);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blob stored successfully\", {\r\n key: fullKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n metadata: {\r\n operation: \"set\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to set blob\", {\r\n key: fullKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to set blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"set\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Get blob data as JSON\r\n */\r\n async getJSON(key: string): Promise> {\r\n const startTime = performance.now();\r\n const fullKey = this.getFullKey(key);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n const data = await blob.getJSON(fullKey);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"JSON blob retrieved successfully\", {\r\n key: fullKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n data,\r\n metadata: {\r\n operation: \"getJSON\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to get JSON blob\", {\r\n key: fullKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to get JSON blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"getJSON\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Set blob data as JSON\r\n */\r\n async setJSON(key: string, value: any): Promise> {\r\n const startTime = performance.now();\r\n const fullKey = this.getFullKey(key);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n await blob.setJSON(fullKey, value);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"JSON blob stored successfully\", {\r\n key: fullKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n metadata: {\r\n operation: \"setJSON\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to set JSON blob\", {\r\n key: fullKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to set JSON blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"setJSON\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Delete blob\r\n */\r\n async delete(key: string): Promise> {\r\n const startTime = performance.now();\r\n const fullKey = this.getFullKey(key);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n await blob.delete(fullKey);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blob deleted successfully\", {\r\n key: fullKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n metadata: {\r\n operation: \"delete\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to delete blob\", {\r\n key: fullKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to delete blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"delete\",\r\n key: fullKey,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * List blobs with optional prefix\r\n */\r\n async list(prefix?: string): Promise> {\r\n const startTime = performance.now();\r\n const searchPrefix = prefix ? this.getFullKey(prefix) : this.keyPrefix;\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n const blobs = await blob.list(searchPrefix);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blobs listed successfully\", {\r\n prefix: searchPrefix,\r\n count: blobs.length,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n data: blobs,\r\n metadata: {\r\n operation: \"list\",\r\n key: searchPrefix || \"all\",\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to list blobs\", {\r\n prefix: searchPrefix,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to list blobs: ${errorMessage}`,\r\n metadata: {\r\n operation: \"list\",\r\n key: searchPrefix || \"all\",\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Copy blob from one key to another\r\n */\r\n async copy(fromKey: string, toKey: string): Promise> {\r\n const startTime = performance.now();\r\n const fullFromKey = this.getFullKey(fromKey);\r\n const fullToKey = this.getFullKey(toKey);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n await blob.copy(fullFromKey, fullToKey);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blob copied successfully\", {\r\n fromKey: fullFromKey,\r\n toKey: fullToKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n metadata: {\r\n operation: \"copy\",\r\n key: `${fullFromKey} -> ${fullToKey}`,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to copy blob\", {\r\n fromKey: fullFromKey,\r\n toKey: fullToKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to copy blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"copy\",\r\n key: `${fullFromKey} -> ${fullToKey}`,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Move blob from one key to another (copy + delete)\r\n */\r\n async move(fromKey: string, toKey: string): Promise> {\r\n const startTime = performance.now();\r\n const fullFromKey = this.getFullKey(fromKey);\r\n const fullToKey = this.getFullKey(toKey);\r\n\r\n try {\r\n const { blob } = await import(\"https://esm.town/v/std/blob\");\r\n await blob.move(fullFromKey, fullToKey);\r\n \r\n const duration = performance.now() - startTime;\r\n \r\n logger.info(\"Blob moved successfully\", {\r\n fromKey: fullFromKey,\r\n toKey: fullToKey,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: true,\r\n metadata: {\r\n operation: \"move\",\r\n key: `${fullFromKey} -> ${fullToKey}`,\r\n duration,\r\n },\r\n };\r\n } catch (error) {\r\n const duration = performance.now() - startTime;\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n \r\n logger.error(\"Failed to move blob\", {\r\n fromKey: fullFromKey,\r\n toKey: fullToKey,\r\n error: errorMessage,\r\n duration: `${duration.toFixed(2)}ms`,\r\n });\r\n\r\n return {\r\n success: false,\r\n error: `Failed to move blob: ${errorMessage}`,\r\n metadata: {\r\n operation: \"move\",\r\n key: `${fullFromKey} -> ${fullToKey}`,\r\n duration,\r\n },\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Check if blob exists\r\n */\r\n async exists(key: string): Promise> {\r\n const result = await this.get(key);\r\n return {\r\n success: true,\r\n data: result.success,\r\n metadata: result.metadata,\r\n };\r\n }\r\n\r\n /**\r\n * Get blob size\r\n */\r\n async getSize(key: string): Promise> {\r\n const result = await this.get(key);\r\n if (!result.success) {\r\n return {\r\n success: false,\r\n error: result.error,\r\n metadata: result.metadata,\r\n };\r\n }\r\n\r\n const contentLength = result.data?.headers.get(\"content-length\");\r\n const size = contentLength ? parseInt(contentLength, 10) : 0;\r\n\r\n return {\r\n success: true,\r\n data: size,\r\n metadata: result.metadata,\r\n };\r\n }\r\n\r\n /**\r\n * Get blob as text\r\n */\r\n async getText(key: string): Promise> {\r\n const result = await this.get(key);\r\n if (!result.success) {\r\n return {\r\n success: false,\r\n error: result.error,\r\n metadata: result.metadata,\r\n };\r\n }\r\n\r\n try {\r\n const text = await result.data!.text();\r\n return {\r\n success: true,\r\n data: text,\r\n metadata: result.metadata,\r\n };\r\n } catch (error) {\r\n const errorMessage = error instanceof Error ? error.message : String(error);\r\n return {\r\n success: false,\r\n error: `Failed to read blob as text: ${errorMessage}`,\r\n metadata: result.metadata,\r\n };\r\n }\r\n }\r\n\r\n /**\r\n * Set blob as text\r\n */\r\n async setText(key: string, text: string): Promise> {\r\n return this.set(key, text);\r\n }\r\n}\r\n\r\n/**\r\n * Default blob service instance\r\n */\r\nexport const blobService = new BlobService();\r\n\r\n/**\r\n * Create a blob service with a specific prefix\r\n */\r\nexport function createBlobService(prefix: string): BlobService {\r\n return new BlobService(prefix);\r\n}\r\n\r\n/**\r\n * Convenience functions for common operations\r\n */\r\nexport const BlobUtils = {\r\n /**\r\n * Create a timestamped key\r\n */\r\n createTimestampedKey(baseKey: string): string {\r\n const timestamp = new Date().toISOString().replace(/[:.]/g, \"-\");\r\n return `${baseKey}-${timestamp}`;\r\n },\r\n\r\n /**\r\n * Create a dated key structure\r\n */\r\n createDatedKey(category: string, key: string): string {\r\n const now = new Date();\r\n const year = now.getFullYear();\r\n const month = String(now.getMonth() + 1).padStart(2, \"0\");\r\n const day = String(now.getDate()).padStart(2, \"0\");\r\n return `${category}/${year}/${month}/${day}/${key}`;\r\n },\r\n\r\n /**\r\n * Parse a blob key to extract components\r\n */\r\n parseKey(key: string): {\r\n prefix?: string;\r\n category?: string;\r\n name: string;\r\n extension?: string;\r\n } {\r\n const parts = key.split(\"/\");\r\n const filename = parts[parts.length - 1];\r\n const pathParts = parts.slice(0, -1);\r\n \r\n const dotIndex = filename.lastIndexOf(\".\");\r\n const name = dotIndex > 0 ? filename.substring(0, dotIndex) : filename;\r\n const extension = dotIndex > 0 ? filename.substring(dotIndex + 1) : undefined;\r\n\r\n return {\r\n prefix: pathParts.length > 0 ? pathParts[0] : undefined,\r\n category: pathParts.length > 1 ? pathParts[1] : undefined,\r\n name,\r\n extension,\r\n };\r\n },\r\n\r\n /**\r\n * Validate key format\r\n */\r\n validateKey(key: string): { valid: boolean; error?: string } {\r\n if (!key || typeof key !== \"string\") {\r\n return { valid: false, error: \"Key must be a non-empty string\" };\r\n }\r\n\r\n if (key.length > 512) {\r\n return { valid: false, error: \"Key must be 512 characters or less\" };\r\n }\r\n\r\n // Check for invalid characters\r\n const invalidChars = /[<>:\"|?*\\x00-\\x1f]/;\r\n if (invalidChars.test(key)) {\r\n return { valid: false, error: \"Key contains invalid characters\" };\r\n }\r\n\r\n return { valid: true };\r\n },\r\n};\r\n\r\nexport default BlobService;","deleted","label",[170,171,153],"src","services","permalink","https://www.val.town/x/ianmenethil/ZenServer/code/src/services/blobService.ts","extension","actionData","errors"]