Would it be enough to pront out?

lib/constants.js

@@ -34,12 +34,19 @@ const COLUMNS_IN_TABLE = 4;
 const questions = Array(COLUMNS_IN_TABLE).fill('?').join(', ');
 const INSERT_DATA = `INSERT INTO files VALUES (${questions})`;
 
+const VERIFY = {
+  NOT_FOUND: 0,
+  PASS: 1,
+  FAIL: -1
+};
+
 module.exports = {
   EXEC_OPTIONS,
   OPENSSL_VERSION,
   DEFAULT_ALG,
   ITERATION_SIZE,
   DEFAULT_DATABASE,
   CREATE_TABLE,
-  INSERT_DATA
+  INSERT_DATA,
+  VERIFY
 };

lib/find-data.js

@@ -7,35 +7,43 @@
  * Licensed under the MIT license
  */
 
-//const constants = require('./constants');
+const constants = require('./constants');
 
 /**
  * Find matching files and validate hashes
  *
  * @param {array} list List of file meta data objects
  * @param {sqlite3.Database} db Database instance
- * @returns {sqlite3.Database|boolean} Database instance or false
+ * @returns {object} Validation information
  */
 const findData = (list, db) => {
   if (!(list instanceof Array) || list.length === 0) {
     return false;
   }
 
+  // There always should be just one as it is unique
   const statement = db.prepare(`
-    SELECT * FROM files WHERE filepath = ?
+    SELECT * FROM files WHERE filepath = ? LIMIT 1
   `);
 
+  const output = {};
+
   list.forEach((item) => {
-    const rows = statement.all(item.filepath);
-    if (rows.length > 1) {
-      console.log(`File "${item.filepath}" had several (${rows.length}) matches in database`);
-    }
-    else if (rows.length === 0) {
+    const row = statement.get(item.filepath);
+    if (!row) {
       console.log(`File "${item.filepath}" did not exists in database`);
+      output[item.filepath] = constants.VERIFY.NOT_FOUND;
+    }
+    else if (row.hash === item.hash) {
+      output[item.filepath] = constants.VERIFY.PASS;
+    }
+    else {
+      console.log(`File "${item.filepath}" does not match the one in database`);
+      output[item.filepath] = constants.VERIFY.FAIL;
     }
   });
 
-  return db;
+  return output;
 };
 
 module.exports = findData;