Split out code for args, parsing, and shared

src/wizard.js

@@ -0,0 +1,48 @@
+const fs = require('fs');
+const minimist = require('minimist');
+
+function getConfig() {
+	let args = process.argv.slice(2);
+	let config = minimist(args, {
+		string: [
+			'input',
+			'output'
+		],
+		boolean: [
+			'yearmonthfolders',
+			'yearfolders',
+			'postfolders',
+			'prefixdate',
+			'saveimages',
+			'addcontentimages'
+		],
+		default: {
+			input: 'export.xml',
+			output: 'output',
+			yearmonthfolders: false,
+			yearfolders: false,
+			postfolders: true,
+			prefixdate: false,
+			saveimages: true,
+			addcontentimages: false
+		}
+	});
+
+	// TODO: when wizard is implemented user will be asked to repeat input instead of bombing
+	if (!checkFileExists(config.input)) {
+		throw new Error('Input file does not exist.');
+	}
+	
+	delete config._;
+	return config;	
+}
+
+function checkFileExists(path) {
+	try {
+		return fs.existsSync(path);
+	} catch(ex) {
+		return false;
+	}
+}
+
+exports.getConfig = getConfig;