From fba5d95aebf13f45cec19967986a4b23e4625c3c Mon Sep 17 00:00:00 2001
From: Dominik Stadler <dominik.stadler@gmx.at>
Date: Sun, 18 Oct 2020 09:55:09 +0200
Subject: [PATCH] Add fileType 'stdout' to print JSON-results on stdout for
 easy unix-style integration of this tool

(cherry picked from commit c97950cc3813acc51923d3b8eb8878d4b0a01f41)
---
 bin/cli.js    | 4 ++--
 lib/Amazon.js | 5 ++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/bin/cli.js b/bin/cli.js
index f99ef62..687f5d9 100755
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -80,8 +80,8 @@ require('yargs')
         },
         filetype: {
             default: 'csv',
-            choices: ['csv', 'json', 'all', ''],
-            describe: "Type of the output file where the data will be saved. 'all' - save data to the 'json' and 'csv' files",
+            choices: ['csv', 'json', 'all', 'stdout', ''],
+            describe: "Type of the output file where the data will be saved. 'stdout' - print json to stdout. 'all' - save data to the 'json' and 'csv' files",
         },
         sort: {
             default: false,
diff --git a/lib/Amazon.js b/lib/Amazon.js
index d272d74..75901de 100644
--- a/lib/Amazon.js
+++ b/lib/Amazon.js
@@ -243,7 +243,7 @@ class AmazonScraper {
         if (this.cli) {
             spinner.stop();
         }
-        if (this.fileType && this.cli) {
+        if (this.fileType && this.cli && this.fileType !== "stdout") {
             console.log(`Result was saved to: ${this.fileName}`);
         }
         return {
@@ -310,6 +310,9 @@ class AmazonScraper {
     async saveResultToFile() {
         if (this.collector.length) {
             switch (this.fileType) {
+                case 'stdout':
+                    console.log(JSON.stringify(this.collector));
+                    break;
                 case 'json':
                     await fromCallback((cb) => writeFile(`${this.fileName}.json`, JSON.stringify(this.collector), cb));
                     break;