FROM public.ecr.aws/shelf/lambda-libreoffice-base:7.4-node16-x86_64
COPY app.js package.json ${LAMBDA_TASK_ROOT}/
RUN npm install
CMD [ "app.handler" ]

const {convertTo, canBeConvertedToPDF} = require('@shelf/aws-lambda-libreoffice');
const fs = require("fs");
const AWS = require("aws-sdk");
const S3_BUCKET = process.env.S3_BUCKET
const WORD_FILE_KEY = process.env.WORD_FILE_KEY
const TMP_DIR = "/tmp"
const s3 = new AWS.S3();
module.exports.handler = async () => {
 console.log(`# Bucket Name: ${S3_BUCKET}`)
 console.log(`# File Name: ${WORD_FILE_KEY}`)
 console.log(`[Initial]: ${getTmpDirContent()}`)
 // Download .docx file from S3 to /tmp
 console.log("# Downloading the .docx file from S3 ...")
 await downloadFileFromS3(WORD_FILE_KEY)
 console.log(`[After Download]: ${getTmpDirContent()}`)
 if (canBeConvertedToPDF(WORD_FILE_KEY)) {
 // Convert .docx to .pdf
 console.log("# Converting .docx file to .pdf file ...")
 const convertedFilePath = convertTo(WORD_FILE_KEY, "pdf");
 console.log(convertedFilePath)
 console.log(`[After Convert]: ${getTmpDirContent()}`)
 // Upload .pdf file to S3
 console.log("# Uploading the .pdf file to S3 ...")
 await uploadFileToS3(convertedFilePath)
 console.log("# Done")
 } else {
 console.log("# Can't be converted tp pdf!")
 }
}
const downloadFileFromS3 = async (fileKey) => {
 try {
 const filePath = `${TMP_DIR}/${fileKey}`
 const params = {
 Bucket: S3_BUCKET,
 Key: fileKey
 }
 const objData = await s3.getObject(params).promise();
 fs.writeFileSync(filePath, objData.Body.toString());
 console.log(`- File ${fileKey} has been downloaded to ${filePath} successfully`);
 } catch (e) {
 throw new Error(`- Download Error: ${e.message}`)
 }
}
const uploadFileToS3 = async (filePath) => {
 try {
 const fileKey = filePath.split(`${TMP_DIR}/`)[1]
 const fileData = fs.readFileSync(filePath)
 const params = {
 Bucket: S3_BUCKET,
 Key: fileKey,
 Body: fileData
 }
 const data = await s3.upload(params).promise();
 console.log(`- Upload successfully at ${data.Location}`);
 } catch (e) {
 throw new Error(`- Upload Error: ${e.message}`)
 }
};
const getTmpDirContent = () => {
 return fs.readdirSync(TMP_DIR)
}

{
 "name": "libreoffice-lambda-container-image",
 "version": "1.0.0",
 "main": "index.js",
 "license": "MIT",
 "dependencies": {
 "@shelf/aws-lambda-libreoffice": "^5.0.1",
 "aws-sdk": "^2.1293.0"
 }
}