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@cdkx/web-application

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Static web application hosting related constructs

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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } return new (P || (P = Promise))(function (resolve, reject) { function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } step((generator = generator.apply(thisArg, _arguments || [])).next()); }); }; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; (function (factory) { if (typeof module === "object" && typeof module.exports === "object") { var v = factory(require, exports); if (v !== undefined) module.exports = v; } else if (typeof define === "function" && define.amd) { define("@cdkx/web-application/handlers/assets-downloader", ["require", "exports", "@cdkx/web-application/handlers/base-handler", "sharp"], factory); } })(function (require, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.AssetsDownloader = void 0; const base_handler_1 = require("@cdkx/web-application/handlers/base-handler"); const sharp_1 = __importDefault(require("sharp")); class AssetsDownloader extends base_handler_1.BaseHandler { constructor(s3) { super(); this.s3 = s3; } run(event) { var _a, _b; return __awaiter(this, void 0, void 0, function* () { const bucketName = process.env.BUCKET_NAME; const assetPublicHost = process.env.ASSETS_PUBLIC_HOST; if (!bucketName) { return this.encodedResponse({ statusCode: 500, body: { message: 'Missing required environment variable: BUCKET_NAME' }, }); } if (!assetPublicHost) { return this.encodedResponse({ statusCode: 500, body: { message: 'Missing required environment variable: ASSETS_PUBLIC_HOST', }, }); } const { size = 'cover', position = 'center', resolution, key } = (_a = event.queryStringParameters) !== null && _a !== void 0 ? _a : {}; if (!key) { return this.encodedResponse({ statusCode: 500, body: { message: 'Could not resolve file name.', }, }); } // if original file requested redirect to it if (!resolution) { return this.encodedResponse({ // permanent redirect statusCode: 301, body: '', headers: { location: `${assetPublicHost}/${key}`, }, }); } // when height or width is set to null, sharp auto assumes width/height const [width, height] = resolution .toUpperCase() .split('X') .map((seg) => (seg !== 'AUTO' ? Number.parseInt(seg) : null)); let originalFile; try { originalFile = yield this.s3 .getObject({ Bucket: bucketName, Key: key, }) .promise(); } catch (err) { if (err.code !== 'NoSuchKey') { throw err; } return this.encodedResponse({ statusCode: 404, body: '', }); } try { if (!(originalFile === null || originalFile === void 0 ? void 0 : originalFile.Body)) { throw new Error(`Could not load original file from ${bucketName}, tried key ${key}`); } const resizedImage = yield sharp_1.default(originalFile.Body) .resize(width, height, { position, fit: size, }) .toBuffer(); const uploadedResizedImage = yield this.s3 .upload({ Bucket: bucketName, Key: `${resolution}/${key}`, Body: resizedImage, ContentDisposition: originalFile.ContentDisposition, CacheControl: originalFile.CacheControl, ContentEncoding: originalFile.ContentEncoding, ContentType: originalFile.ContentType, Metadata: originalFile.Metadata, }) .promise(); return this.encodedResponse({ // permanent redirect to new uploaded image statusCode: 301, body: '', headers: { location: `${assetPublicHost}/${uploadedResizedImage.Key}`, }, }); } catch (err) { console.log('Error processing request: ', err); return this.encodedResponse({ statusCode: 500, body: { message: (_b = err.message) !== null && _b !== void 0 ? 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{};\n\n    if (!key) {\n      return this.encodedResponse({\n        statusCode: 500,\n        body: {\n          message: 'Could not resolve file name.',\n        },\n      });\n    }\n\n    // if original file requested redirect to it\n    if (!resolution) {\n      return this.encodedResponse({\n        // permanent redirect\n        statusCode: 301,\n        body: '',\n        headers: {\n          location: `${assetPublicHost}/${key}`,\n        },\n      });\n    }\n\n    // when height or width is set to null, sharp auto assumes width/height\n    const [width, height] = resolution\n      .toUpperCase()\n      .split('X')\n      .map((seg) => (seg !== 'AUTO' ? Number.parseInt(seg) : null));\n\n    let originalFile: S3.GetObjectOutput;\n    try {\n      originalFile = await this.s3\n        .getObject({\n          Bucket: bucketName,\n          Key: key,\n        })\n        .promise();\n    } catch (err) {\n      if (err.code !== 'NoSuchKey') {\n        throw err;\n      }\n      return this.encodedResponse({\n        statusCode: 404,\n        body: '',\n      });\n    }\n\n    try {\n      if (!originalFile?.Body) {\n        throw new Error(\n          `Could not load original file from ${bucketName}, tried key ${key}`\n        );\n      }\n\n      const resizedImage = await sharp(originalFile.Body as Buffer)\n        .resize(width, height, {\n          position,\n          fit: size,\n        })\n        .toBuffer();\n\n      const uploadedResizedImage = await this.s3\n        .upload({\n          Bucket: bucketName,\n          Key: `${resolution}/${key}`,\n          Body: resizedImage,\n          ContentDisposition: originalFile.ContentDisposition,\n          CacheControl: originalFile.CacheControl,\n          ContentEncoding: originalFile.ContentEncoding,\n          ContentType: originalFile.ContentType,\n          Metadata: originalFile.Metadata,\n        })\n        .promise();\n\n      return this.encodedResponse({\n        // permanent redirect to new uploaded image\n        statusCode: 301,\n        body: '',\n        headers: {\n          location: `${assetPublicHost}/${uploadedResizedImage.Key}`,\n        },\n      });\n    } catch (err) {\n      console.log('Error processing request: ', err);\n      return this.encodedResponse({\n        statusCode: 500,\n        body: { message: err.message ?? 'Something went wrong!' },\n      });\n    }\n  }\n}\n"]}