Created download script

index.js

@@ -0,0 +1,80 @@
+"use strict";
+
+const fs = require("fs");
+const https = require("https");
+
+const iconDestination = `${__dirname}/icons/`;
+const availableFormats = ["128x128", "64x64", "32x32", "16x16"];
+const avaibableNames = ["rank", "slug", "name", "symbol"];
+
+let chosenFormat = availableFormats[0];
+let chosenName = avaibableNames[1];
+
+let cryptocurrencyDownloadUrls = [];
+let CMCresult = "";
+
+if(process.argv.includes(availableFormats[0])){chosenFormat = availableFormats[0]}
+if(process.argv.includes(availableFormats[1])){chosenFormat = availableFormats[1]}
+if(process.argv.includes(availableFormats[2])){chosenFormat = availableFormats[2]}
+if(process.argv.includes(availableFormats[3])){chosenFormat = availableFormats[3]}
+if(process.argv.includes(avaibableNames[0])){chosenName = avaibableNames[0]}
+if(process.argv.includes(avaibableNames[1])){chosenName = avaibableNames[1]}
+if(process.argv.includes(avaibableNames[2])){chosenName = avaibableNames[2]}
+if(process.argv.includes(avaibableNames[3])){chosenName = avaibableNames[3]}
+
+!fs.existsSync(iconDestination) && fs.mkdirSync(iconDestination);
+
+https.get("https://s2.coinmarketcap.com/generated/search/quick_search.json", (response) => {
+  response.on("data", (chunk) => {
+    CMCresult += chunk;
+  });
+  response.on("end", () => {
+    CMCresult = JSON.parse(CMCresult);
+    for (let i = 0; i < 10; i++) {
+      cryptocurrencyDownloadUrls.push(`https://s2.coinmarketcap.com/static/img/coins/${chosenFormat}/${CMCresult[i].id}.png`);
+    }
+    (async function loop() {
+      console.log("Started saving icons...");
+      for (let i = 0; i < cryptocurrencyDownloadUrls.length; i++) {
+        await new Promise((resolve, reject) => {
+          https.get(cryptocurrencyDownloadUrls[i], (response) => {
+            if (response.statusCode !== 200) {
+              let err = new Error(`The file ${CMCresult[i].slug}.png couldn\'t be retrieved :(`);
+              err.status = response.statusCode;
+              return reject(err);
+            }
+            let chunks = [];
+            response.setEncoding("binary");
+            response.on("data", (chunk) => {
+              chunks += chunk;
+            }).on("end", () => {
+              let stream;
+              if (chosenName === avaibableNames[0]) {
+                stream = fs.createWriteStream(`${iconDestination}${i + 1}.png`);
+              } else {
+                stream = fs.createWriteStream(`${iconDestination}${CMCresult[i][chosenName]}.png`);
+              }
+              stream.write(chunks, "binary");
+              stream.on("finish", () => {
+                resolve(`${iconDestination}${CMCresult[i].slug}.png saved succesfully :)`);
+                console.log(`Saved ${CMCresult[i][chosenName]}.png in ${iconDestination}`);
+              });
+              response.pipe(stream);
+            });
+          }).on("error", (err) => {
+            console.log(`Oops, an error occurred: ${err.message}`);
+            reject(err.message);
+          });
+        });
+        if (i === cryptocurrencyDownloadUrls.length - 1) {
+          console.log("Done! If this tool was helpfull to you please consider a donation:");
+          console.log("BTC: ");
+          console.log("ETH: ");
+          console.log("LTC: LYjsYCTn1BgbXkGjizRiurjC4YMh2VZsF2");
+        }
+      }
+    })();
+  });
+}).on("error", (err) => {
+  console.log(`Oops, an error occurred: ${err.message}`);
+});