feat: find incomplete csv records

src/pages/tools/csv/find-incomplete-csv-records/service.ts

@@ -0,0 +1,80 @@
+import { InitialValuesType } from './types';
+import { splitCsv } from '@utils/csv';
+
+function generateMessage(
+  row: string[],
+  lineIndex: number,
+  maxLength: number,
+  emptyLines: boolean,
+  emptyValues: boolean
+) {
+  const lineNumber = lineIndex + 1;
+  // check if empty lines are allowed
+  if (!emptyLines && row.length === 1 && row[0] === '')
+    return { title: 'Missing Line', message: `Line ${lineNumber} is empty.` };
+
+  // if row legth is less than maxLength it means that there are missing columns
+  if (row.length < maxLength)
+    return {
+      title: `Found missing column(s) on line ${lineNumber}`,
+      message: `Line ${lineNumber} has ${
+        maxLength - row.length
+      } missing column(s).`
+    };
+
+  // if row length is equal to maxLength we should check if there are empty values
+  if (row.length == maxLength && emptyValues) {
+    let missingValues = false;
+    let message = `Empty values on line ${lineNumber}: `;
+    row.forEach((cell, index) => {
+      if (cell.trim() === '') {
+        missingValues = true;
+        message += `column ${index + 1}, `;
+      }
+    });
+    if (missingValues)
+      return {
+        title: `Found missing values on line ${lineNumber}`,
+        message: message.slice(0, -2) + '.'
+      };
+  }
+
+  return null;
+}
+export function findIncompleteCsvRecords(
+  input: string,
+  options: InitialValuesType
+): string {
+  if (!input) return '';
+
+  if (options.messageLimit && options.messageNumber <= 0)
+    throw new Error('Message number must be greater than 0');
+
+  const rows = splitCsv(
+    input,
+    true,
+    options.commentCharacter,
+    options.emptyLines,
+    options.csvSeparator,
+    options.quoteCharacter
+  );
+  const maxLength = Math.max(...rows.map((row) => row.length));
+  const messages = rows
+    .map((row, index) =>
+      generateMessage(
+        row,
+        index,
+        maxLength,
+        options.emptyLines,
+        options.emptyValues
+      )
+    )
+    .filter(Boolean)
+    .map((msg) => `Title: ${msg!.title}\nMessage: ${msg!.message}`);
+
+  return messages.length > 0
+    ? options.messageLimit
+      ? messages.slice(0, options.messageNumber).join('\n\n')
+      : messages.join('\n\n')
+    : 'The Csv input is complete.';
+}