start the feature of replacing an existing image

README.md

@@ -37,6 +37,9 @@ JWT=`node -e "$CODE"`; curl -X POST -H "Authorization: Bearer $JWT" -F "image=@.
 JWT=`node -e "$CODE"`; curl -X DELETE -H "Authorization: Bearer $JWT" http://localhost:3001/image/https%3A%2F%2Fgifts-image-test.s3.amazonaws.com%2F4599145c3a8792a678f458747f2d8512c680e8680bf5563c35b06cd770051ed2.png
 ```
 
+https://github.com/box/Makefile.test
+`make -C test -j`
+
 ## deploy to prod first time
 
 * Do the necessary steps from "setup" above, or `docker build` it.
@@ -51,4 +54,4 @@ JWT=`node -e "$CODE"`; curl -X DELETE -H "Authorization: Bearer $JWT" http://loc
 
 ## deploy to prod subsequent times
 
-* Update version in server.js file. Add CHANGELOG.md entry.
+* Update version in server.js 'ping' endpoint. Add CHANGELOG.md entry.

server.js

@@ -18,7 +18,7 @@ app.use(cors());
 
 const port = process.env.PORT || 3002;
 // file name also referenced in flyway.conf and potentially in .env files or in environment variables
-const dbFile = process.env.SQLITE_FILE || './image.sqlite';
+const dbFile = process.env.SQLITE_FILE || './image-db.sqlite';
 const bucketName = process.env.S3_BUCKET_NAME || 'gifts-image-test';
 const imageServer = process.env.DOWNLOAD_IMAGE_SERVER || 'test-image.timesafari.app';
 
@@ -54,7 +54,7 @@ const uploadDir = 'uploads';
 const uploadMulter = multer({ dest: uploadDir + '/' });
 
 app.get('/ping', async (req, res) => {
-    res.send('pong v1.0.0');
+    res.send('pong - v 1.1.0'); // version
 });
 
 app.get('/image-limits', async (req, res) => {
@@ -70,13 +70,21 @@ app.get('/image-limits', async (req, res) => {
   }));
 });
 
-// POST endpoint to upload an image
+/**
+ * POST endpoint to upload an image
+ *
+ * Send as FormData, with:
+ * - "image" file Blob
+ * - "claimType" (optional, eg. "GiveAction", "PlanAction", "profile")
+ * - "handleId" (optional)
+ * - "fileName" (optional, if you want to replace an previous image)
+ */
 app.post('/image', uploadMulter.single('image'), async (req, res) => {
   const reqFile = req.file;
   if (reqFile == null) {
     return res.status(400).send(JSON.stringify({ success: false, message: 'No file uploaded.' }));
   }
-  if (reqFile.size > 10000000) {
+  if (reqFile.size > 10485760) { // 10MB
     fs.rm(reqFile.path, (err) => {
       if (err) {
         console.error("Error deleting too-large temp file", reqFile.path, "with error (but continuing):", err);
@@ -102,41 +110,115 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
     fs.readFile(reqFile.path, async (err, data) => {
       if (err) throw err; // Handle error
 
-      const hashSum = crypto.createHash('sha256');
+      try {
-      hashSum.update(data);
+        let finalFileName;
-      const hashHex = hashSum.digest('hex');
+        if (req.body.fileName) {
+          finalFileName = req.body.fileName;
+
+          // check if the file to replace was sent by this user earlier
+          const didForOriginal = await new Promise((resolve, reject) => {
+            db.get(
+              'SELECT did FROM image WHERE did = ? and final_file = ?'
+              [ finalFileName, issuerDid ],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for user from database:', dbErr)
+                  reject(dbErr);
+                }
+                resolve(row?.did);
+              }
+            );
+          });
+          if (!didForOriginal) {
+            return res.status(404).send(JSON.stringify({ success: false, message: 'No image entry found for user ' + issuerDid + ' for file ' + finalFileName }));
+          }
 
-      const fileName = hashHex + path.extname(reqFile.originalname);
+          // check if any other user recorded this image
+          const othersWhoSentImage = await new Promise((resolve, reject) => {
+            db.get(
+              'SELECT did FROM image WHERE final_file = ? and did != ?',
+              [ url, issuerDid ],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for other users from database:', dbErr)
+                  reject(dbErr);
+                }
+                resolve(row?.did);
+              }
+            );
+          });
+          if (othersWhoSentImage) {
+            return res.status(400).send(JSON.stringify({ success: false, message: 'Other users have also saved this image so it cannot be modified. You will have to replace your own references.' }));
+          }
 
-      try {
+          // remove from S3
+          const params = {
+            Bucket: bucketName, // S3 Bucket name
+            Key: finalFileName, // File name to use in S3
+          };
+          const command = new DeleteObjectCommand(params);
+          const response = await s3Client.send(command);
+          if (response.$metadata.httpStatusCode !== 200
+            && response.$metadata.httpStatusCode !== 202
+            && response.$metadata.httpStatusCode !== 204) {
+            const errorTime = new Date().toISOString();
+            console.error(errorTime, "Error deleting from S3 with bad HTTP status, with metadata:", response.$metadata);
+            return res.status(500).send(JSON.stringify({
+              success: false,
+              message: "Got bad status of " + response.$metadata.httpStatusCode + " from S3. See server logs at " + errorTime
+            }));
+          }
 
-        // look to see if this image already exists
+          // might as well remove from DB and add it all back again later
-        const imageUrl = await new Promise((resolve, reject) => {
+          await new Promise((resolve, reject) => {
-          db.get(
+            db.run(
-            'SELECT url FROM image WHERE final_file = ? and did = ?',
+              'DELETE FROM image where did = ? and final_file = ?',
-            [ fileName, issuerDid ],
+              [ issuerDid, finalFileName ],
-            (dbErr, row) => {
+              (dbErr) => {
-              if (dbErr) {
+                if (dbErr) {
-                console.error(currentDate, 'Error getting image for user from database:', dbErr)
+                  const currentDate = new Date().toISOString();
-                // continue anyway
+                  console.error(currentDate, "Error deleting record by", issuerDid, "named", finalFileName, "from database:", dbErr);
+                  // don't continue because then we'll have storage we cannot track (and potentially limit)
+                  reject(dbErr);
+                }
+                resolve();
               }
-              resolve(row?.url);
+            );
-            }
+          });
-          );
+        } else {
-        });
+          const hashSum = crypto.createHash('sha256');
-        if (imageUrl) {
+          hashSum.update(data);
-          return res.status(201).send(JSON.stringify({ success: true, url: imageUrl, message: 'This image already existed.' }));
+          const hashHex = hashSum.digest('hex');
+          finalFileName = hashHex + path.extname(reqFile.originalname);
+
+          // look to see if this image already exists for this user
+          const imageUrl = await new Promise((resolve, reject) => {
+            db.get(
+              'SELECT url FROM image WHERE final_file = ? and did = ?',
+              [ finalFileName, issuerDid ],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for user from database:', dbErr)
+                  // continue anyway
+                }
+                resolve(row?.url);
+              }
+            );
+          });
+          if (imageUrl) {
+            return res.status(201).send(JSON.stringify({ success: true, url: imageUrl, message: 'This image already existed.' }));
+          }
         }
 
         // record the upload in the database
         const currentDate = new Date().toISOString();
         const localFile = reqFile.path.startsWith(uploadDir + '/') ? reqFile.path.substring(uploadDir.length + 1) : reqFile.path;
-        const finalUrl = `https://${imageServer}/${fileName}`;
+        const finalUrl = `https://${imageServer}/${finalFileName}`;
         const claimType = req.body.claimType;
         const handleId = req.body.handleId;
         await new Promise((resolve, reject) => {
           db.run(
-            'INSERT INTO image (time, did, claim_type, handle_id, local_file, size, final_file, mime_type, url) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
+            'INSERT INTO image (time, did, claim_type, handle_id, local_file, size, final_file, mime_type, url, is_replacement) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
             [
               currentDate,
               issuerDid,
@@ -144,9 +226,10 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
               handleId,
               localFile,
               reqFile.size,
-              fileName,
+              finalFileName,
               reqFile.mimetype,
-              finalUrl
+              finalUrl,
+              !!req.body.fileName,
             ],
             (dbErr) => {
               if (dbErr) {
@@ -164,7 +247,7 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
           Body: data,
           Bucket: bucketName, // S3 Bucket name
           ContentType: reqFile.mimetype, // File content type
-          Key: fileName, // File name to use in S3
+          Key: finalFileName, // File name to use in S3
         };
         if (process.env.S3_SET_ACL === 'true') {
           params.ACL = 'public-read';
@@ -186,7 +269,7 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
           });
           // AWS URL: https://gifts-image-test.s3.amazonaws.com/gifts-image-test/FILE
           // American Cloud URL: https://a2-west.americancloud.com/TENANT:giftsimagetest/FILE
-          return res.status(200).send(JSON.stringify({success: true, url: finalUrl}));
+          return res.status(201).send(JSON.stringify({success: true, url: finalUrl}));
         }
       } catch (uploadError) {
         const errorTime = new Date().toISOString();
@@ -244,7 +327,7 @@ app.delete('/image/:url', async (req, res) => {
     }
 
     // check if any other user recorded this image
-    const otherUserImage = await new Promise((resolve, reject) => {
+    const othersWhoSentImage = await new Promise((resolve, reject) => {
       db.get(
         'SELECT did FROM image WHERE url = ? and did != ?',
         [ url, issuerDid ],
@@ -258,7 +341,7 @@ app.delete('/image/:url', async (req, res) => {
       );
     });
 
-    if (!otherUserImage) {
+    if (!othersWhoSentImage) {
       // remove from S3 since nobody else recorded it
       const params = {
         Bucket: bucketName, // S3 Bucket name
@@ -286,8 +369,8 @@ app.delete('/image/:url', async (req, res) => {
         (dbErr) => {
           if (dbErr) {
             const currentDate = new Date().toISOString();
-            console.error(currentDate, "Error deleting record from", issuerDid, "into database:", dbErr);
+            console.error(currentDate, "Error deleting record by", issuerDid, "with URL", url, "from database:", dbErr);
-            // don't continue because then we'll have storage we cannot track (and potentially limit)
+            // we'll let them know that it's not all cleaned up so they can try again
             reject(dbErr);
           }
           resolve();

sql/migrations/V2__add_is_replacement.sql

@@ -0,0 +1,2 @@
+
+ALTER TABLE image ADD COLUMN is_replacement BOOLEAN NOT NULL DEFAULT FALSE;

test/test.sh

@@ -0,0 +1,18 @@
+# requires node & curl & jq
+
+HOST=http://localhost:3002
+
+CODE='OWNER_DID="did:ethr:0x0000694B58C2cC69658993A90D3840C560f2F51F"; OWNER_PRIVATE_KEY_HEX="2b6472c026ec2aa2c4235c994a63868fc9212d18b58f6cbfe861b52e71330f5b"; didJwt = require("did-jwt"); didJwt.createJWT({ exp: Math.floor(Date.now() / 1000) + 60, iat: Math.floor(Date.now() / 1000), iss: OWNER_DID }, { issuer: OWNER_DID, signer: didJwt.SimpleSigner(OWNER_PRIVATE_KEY_HEX) }).then(console.log)'
+
+# exit as soon as anything fails
+set -e
+
+JWT=$(node -e "$CODE")
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test1.png" $HOST/image)
+echo $RESULT
+URL=$(echo $RESULT | jq -r '.url')
+
+STATUS_CODE=$(curl -o out-test1.png -w "%{http_code}" $URL);
+if [ $STATUS_CODE -ne 200 ]; then
+  echo "File is not accessible, received status code: $STATUS_CODE";
+fi