DELETE language/image

[ashayp22]

Goals Need an endpoint (DELETE language/image/:course_id/:unit_id/:lesson_id/:word_id) for deleting an image file from S3.

Getting started

Here are some snippets of code on deleting data from AWS S3. Feel free to use them:

const deleteFile = async (filePath) => {
    const params = {
        Bucket: S3_BUCKET_NAME,
        Key: filePath,
    };

    const s3 = getS3(S3_CREDENTIALS);
    await s3.deleteObject(params).promise();
};

/**
 * Delete's all of the files in a folder
 * @param {String} folderName The id of the patient
 * Source: https://stackoverflow.com/questions/20207063/how-can-i-delete-folder-on-s3-with-node-js
 */
const deleteFolder = async (folderName) => {
    const params = {
        Bucket: S3_BUCKET_NAME,
        Prefix: `${folderName}/`,
    };

    const s3 = getS3(S3_CREDENTIALS);

    // Gets up to 1000 files that need to be deleted
    const listedObjects = await s3.listObjectsV2(params).promise();
    if (listedObjects.Contents.length === 0) return;

    const deleteParams = {
        Bucket: S3_BUCKET_NAME,
        Delete: { Objects: [] },
    };

    // Builds a list of the files to delete
    listedObjects.Contents.forEach(({ Key }) => {
        deleteParams.Delete.Objects.push({ Key });
    });

    // Deletes the files from S3
    await s3.deleteObjects(deleteParams).promise();

    // If there are more than 1000 objects that need to be deleted from the folder
    if (listedObjects.IsTruncated) await deleteFolder(folderName, S3_CREDENTIALS);
};

[ashayp22]

Same as #108