Check for Amazon 503

Author: Prince25

README.md

@@ -103,7 +103,7 @@ There are only two steps to use this program: 1) enter information and 2) launch
 3. Consider [donating](https://www.paypal.com/donate?business=3Y9NEYR4TURT8&item_name=Making+software+and+hacking+the+world%21+%E2%99%A5&currency_code=USD) or buying me a [Pizza](https://buymeacoff.ee/PrinceSingh) or [PayPal](https://paypal.me/PrinceSingh25) me :smile:
 
 #### Proxies
-If you plan to use low interval rates OR track several items from one store, it is highly recommended that you use proxies such as ones from [Webshare](https://www.webshare.io/) in the format `IP:Port`.<br>\
+If you plan to use low interval rates OR track several items from one store, it is highly recommended that you use proxies such as ones from [Webshare](https://www.webshare.io/) in the format `ip:port` for IP-based authentication or `username:password@ip:port`.<br>\
 **NOTE:** The following stores do not currently with proxies due to them blocking some connections/headers which results in inconsistent connection: Argos, Best Buy, Costco, and Tesco. Thus we thought it'd be best if we take off proxy support for now until we can do some further research or find an alternative way.
 
 

stores/amazon.js

@@ -30,9 +30,10 @@ export default async function amazon(url, interval, originalIntervalValue, first
 
         // Setup proxies
         if(PROXIES && PROXY_LIST.length > 0) {
-            if (badProxies.size == PROXY_LIST.length)   // If all proxies are used, start over
+            if (badProxies.size == PROXY_LIST.length) {   // If all proxies are used, start over
+                console.info(moment().format('LTS') + ': Tried all proxies in proxies.txt. Will try them again. Consider getting more proxies.')
                 badProxies = new Set()
-
+            }
             do {
                 proxy = 'http://' + PROXY_LIST[Math.floor(Math.random() * PROXY_LIST.length)];
             } while(badProxies.has(proxy))
@@ -51,7 +52,14 @@ export default async function amazon(url, interval, originalIntervalValue, first
         // Get Page
         res = await axios.get(url, options)
             .catch(async function (error) {
-                writeErrorToFile(store, error);
+                if (error.response.status == 503) {
+                    console.error(moment().format('LTS') + ': ' + store + ' 503 (service unavailable) Error for ' + url + '. Consider increasing invterval.')
+                    if(PROXIES) { 
+                        console.error('Proxy', proxy, 'might be banned from ' + store + '. Adding it to the bad list')
+                        badProxies.add(proxy)
+                    }
+                }
+                else writeErrorToFile(store, error);
             });
 
 
@@ -62,10 +70,12 @@ export default async function amazon(url, interval, originalIntervalValue, first
             // If bot Detected
             if (html.includes("we just need to make sure you're not a robot")) {
                 let message = moment().format('LTS') + ': ' + store + ' bot detected. '
-                if(PROXIES) message += 'For proxy: ' + proxy + '. Consider lowering interval.'
+                if(PROXIES) {
+                    message += 'For proxy: ' + proxy + '. Consider lowering interval.'
+                    badProxies.add(proxy)
+                }
                 else message += 'Consider using proxies or lowering interval.'
                 console.error(message)
-                badProxies.add(proxy)
                 resolve({interval: Math.floor(interval.value + Math.random() * originalIntervalValue), urlOpened: urlOpened})
                 return
             }