feat: convert-time-to-seconds

src/pages/tools/time/convert-time-to-seconds/service.ts

@@ -0,0 +1,53 @@
+import { containsOnlyDigits } from '@utils/string';
+
+function recursiveTimeToSeconds(
+  timeArray: string[],
+  index: number = 0
+): number {
+  if (index >= timeArray.length) {
+    return 0;
+  }
+
+  const multipliers = [3600, 60, 1];
+  return (
+    Number(timeArray[index]) * multipliers[index] +
+    recursiveTimeToSeconds(timeArray, index + 1)
+  );
+}
+
+function compute(timeArray: string[], lineNumber: number): string {
+  if (timeArray[0] == '') {
+    return '';
+  }
+  if (timeArray.length > 3) {
+    throw new Error(`Time contains more than 3 parts on line ${lineNumber}`);
+  }
+
+  const normalizedArray = [...timeArray, '0', '0'];
+
+  normalizedArray.forEach((time, index) => {
+    if (!containsOnlyDigits(time)) {
+      throw new Error(
+        `Time doesn't contain valid ${
+          ['hours', 'minutes', 'seconds'][index]
+        } on line ${lineNumber}`
+      );
+    }
+  });
+
+  return recursiveTimeToSeconds(timeArray).toString();
+}
+
+export function convertTimetoSeconds(input: string): string {
+  const result: string[] = [];
+
+  const lines = input.split('\n');
+
+  lines.forEach((line, index) => {
+    const timeArray = line.split(':');
+    const seconds = compute(timeArray, index + 1);
+    result.push(seconds);
+  });
+
+  return result.join('\n');
+}