#38: added option to skip firest n reports

useful in case of an error where the program gets stuck due to network issues. we can now skip the reports already downloaded and continue where we the program hanged.

index.js

@@ -44,6 +44,7 @@ program
   .option('-p, --pathToBackup <string>', 'Path where to store the backup of the reports.')
   .option('-d, --dataDictionary', 'Flag to only backup the data dictionary and data availability reports.')
   .option('-w, --webApi', 'Flag to only backup the web api reports.')
+  .option('-s, --skip <number>', 'Option to skip first n number of reports')
   .description('Backs up the reports from a Cert API server to a specified path.')
   .action(backup);
 

lib/backup/index.js

@@ -59,7 +59,7 @@ async function saveReportToDisk(report, backupPath, stats) {
   }
 }
 
-const getAllDDAndDAReports = async (serverUrl, preFetchedDDReportIds, backupPath, stats) => {
+const getAllDDAndDAReports = async (serverUrl, preFetchedDDReportIds, backupPath, stats, skip) => {
   let ddReportIds = [];
   let ddReports = 0;
   let daReports = 0;
@@ -79,6 +79,9 @@ const getAllDDAndDAReports = async (serverUrl, preFetchedDDReportIds, backupPath
   for (const id of ddReportIds) {
     console.clear();
     console.log(chalk.greenBright.bold(`Fetching report ${++count} of ${ddReportIds.length}`));
+    if (count < skip) {
+      continue;
+    }
     const ddReport = await fetchSingleDDReport({ serverUrl, id });
     const daReport = await fetchDataAvailabilityReport({ serverUrl, reportId: id });
     ddReports++;
@@ -96,7 +99,7 @@ const getAllDDAndDAReports = async (serverUrl, preFetchedDDReportIds, backupPath
 };
 
 const backup = async (options = {}, preFetchedDDReportIds = []) => {
-  const { url = '', pathToBackup = '', dataDictionary = false, webApi = false } = options;
+  const { url = '', pathToBackup = '', dataDictionary = false, webApi = false, skip = 0 } = options;
   if (!isValidUrl(url)) return;
   const backupPath = path.join(pathToBackup, BACKUP_DIRECTORY);
   try {
@@ -125,7 +128,8 @@ const backup = async (options = {}, preFetchedDDReportIds = []) => {
         url,
         preFetchedDDReportIds,
         backupPath,
-        stats
+        stats,
+        skip
       );
       stats.ddReportsCount = ddReportsCount;
       stats.daReportsCount = daReportsCount;