First Take w/ Github Image

build.js

@@ -1,11 +1,20 @@
 const fs = require('fs');
+const path = require('path');
 const fetch = require('isomorphic-fetch');
 const sortby = require('lodash.sortby');
 const request = require('sync-request');
 const ora = require('ora');
 const chalk = require('chalk');
+const sharp = require('sharp');
 
 const endpoint = 'https://www.cryptocompare.com/api/data/coinlist/';
+const ghBaseUrl = 'https://raw.githubusercontent.com/crypti/cryptocurrencies/master/images';
+
+const forceOptions = ['force', '--force', '-f', '-force'];
+// Iterate through opts and return true if any forceOptions found
+const forceDownload = forceOptions.reduce((acc, currentVal) => (acc) ?
+										true :
+										process.argv.indexOf(currentVal) > 0, false);
 
 const spinner = ora('Building currencies').start();
 spinner.color = 'magenta';
@@ -16,59 +25,99 @@ fetch(endpoint)
 	const sorted = sortby(json.Data, o => o.CoinName);
 
 	const symbols = {};
+	const symbolsWithMeta = {};
 	let imagesSaved = 0;
 
 	/**
 	 * Build the JSON file based on the cryptocompare coinlist.
 	 */
 	sorted.forEach((currency, index) => {
 		const {Name, CoinName, ImageUrl} = currency;
+		symbolsWithMeta[Name] = {
+			name: CoinName
+		};
+
 		symbols[Name] = CoinName;
 
 		// download the image for future use
 		if (ImageUrl) {
 			spinner.text = `${chalk.gray(index)} ${Name}`;
 			spinner.render();
+
+			const extension = ImageUrl.split('.').pop();
+			const ImageFile = `${Name}.${extension}`;
+			const IconFile = `${Name}-128.${extension}`;
+			const ImagePath = path.join('images', ImageFile);
+
+			symbolsWithMeta[Name].imageUrl = `${ghBaseUrl}/${ImageFile}`;
+			symbolsWithMeta[Name].iconUrl = `${ghBaseUrl}/${IconFile}`;
+
+			// skip pre-existing images for optimization purposes
+			if (fs.existsSync(ImagePath) && !forceDownload) {
+				spinner.text = `${Name}'s image and icon detected, skipping`;
+				return;
+			}
+
 			const res = request('get', `https://www.cryptocompare.com${ImageUrl}`);
-			fs.writeFileSync(`images/${Name}.${ImageUrl.split('.').pop()}`, res.getBody());
+			const ImageBuffer = res.getBody();
+
+			// Save full size
+			fs.writeFileSync(ImagePath, ImageBuffer);
+			// Compress to 128 x 128 for icon
+			sharp(ImageBuffer).resize(64).toFile(path.join('images', IconFile));
 			imagesSaved += 1;
 		}
 	});
 
 	spinner.succeed([`${imagesSaved} images saved to /images`]);
 
 	spinner.color = 'yellow';
-	spinner.start(`Saving cryptocurrencies.json file`);
+	spinner.start(`Saving cryptocurrencies.json & cryptocurrencies-meta.json file`);
 
+	fs.writeFileSync('cryptocurrencies-meta.json', JSON.stringify(symbolsWithMeta, null, 2));
 	fs.writeFileSync('cryptocurrencies.json', JSON.stringify(symbols, null, 2));
 	spinner.succeed(`${sorted.length} currencies saved to cryptocurrencies.json`);
 
 	spinner.start('Saving Readme');
 
 	/**
-	 * Build the Markdown Table of currencies in the Readme.
+	 * Build the Markdown Table of currencies in the List.md.
 	 */
-	const template = fs.readFileSync('readme.md').toString();
-	const data = JSON.parse(fs.readFileSync('cryptocurrencies.json').toString());
+	const template = fs.readFileSync('list.md').toString();
+	const data = JSON.parse(fs.readFileSync('cryptocurrencies-meta.json').toString());
 
 	const newSymbols = Object.keys(data);
 
 	let table = `There are currently **${newSymbols.length} cryptocurrencies** represented*:\n`;
 	table += '\n\n';
-	table += '| Symbol | Name |\n';
-	table += '| :------ | :------ |\n';
+	table += '| Symbol | Name | Icon | \n';
+	table += '| :------ | :------ | :------ | \n';
 
 	newSymbols.forEach(symbol => {
-		table += `| \`${symbol}\` | ${data[symbol]} |\n`;
+		const imageHtml = `<img src="${data[symbol].imageUrl}" width="64" height="64" alt="${data[symbol].name}'s Icon">`;
+		table += `| \`${symbol}\` | ${data[symbol].name} | ${imageHtml} | \n`;
 	});
 
-	table += `\n<small><em>* Last updated: ${new Date().toUTCString()}</em></small>`;
+	const updateString = `\n<small><em>* Last updated: ${new Date().toUTCString()}</em></small>`;
+	table += updateString;
 
 	// Look for the HTML comments in the README as a target
 	const targetRegex = /<!-- BEGIN TABLE INJECT -->(\w|\W)*<!-- END TABLE INJECT -->/gim;
 	const updated = template.replace(targetRegex, `<!-- BEGIN TABLE INJECT -->\n${table}\n<!-- END TABLE INJECT -->`);
-	fs.writeFileSync('readme.md', updated);
-	spinner.succeed(['Readme Markdown Table updated']);
+	fs.writeFileSync('list.md', updated);
+	spinner.succeed(['Master List Markdown Table updated']);
+
+	/**
+	  * Update Stats on Readme
+      */
+	const readme = fs.readFileSync('readme.md').toString();
+	const readmeTarget = /<!-- BEGIN INJECT STATS -->(\w|\W)*<!-- END INJECT STATS -->/gim;
+	const stats = `This repository currently contains **${newSymbols.length}** cryptocurrencies.
+
+For more information, view the list of coins: [\`list.md\`](https://github.com/crypti/cryptocurrencies/blob/master/list.md) \n
+${updateString}`;
+	const statUpdate = readme.replace(readmeTarget, `<!-- BEGIN INJECT STATS -->\n${stats}<!-- END INJECT STATS -->`);
+	fs.writeFileSync('readme.md', statUpdate);
 
 	console.log('\n', 'Remember to', chalk.yellow('git commit'), 'and', chalk.yellow('npm publish'));
 })