Add index.js with init command

src/index.js

@@ -0,0 +1,98 @@
+#!/usr/bin/env node
+
+const { Command } = require('commander');
+const packageJson = require('../package.json');
+const fs          = require('fs');
+const inquirer    = require('inquirer');
+const os          = require('os');
+const path        = require('path');
+
+const program = new Command();
+
+const configFileLocation = path.resolve(os.homedir(), '.bitbucket-multi-repo-management.json');
+
+let config;
+let hasExistingConfig;
+
+try {
+    config = fs.readFileSync(configFileLocation);
+    config = JSON.parse(config);
+    hasExistingConfig = true;
+} catch (e) {
+    config = {};
+    hasExistingConfig = false;
+}
+
+console.log(config);
+
+program
+    .name(packageJson.name)
+    .version(packageJson.version)
+    .description('A node.js console application that manages multiple git repositories in Bitbucket Cloud via the Bitbucket API.')
+
+    .command('init')
+    .action(async() => {
+
+        if (hasExistingConfig) {
+            const existingConfigAnswers = await inquirer.prompt([
+                {
+                    type: 'confirm',
+                    name: 'shouldOverwriteConfig',
+                    message: `Existing configuration file at ${configFileLocation}. Would you like to overwrite it?`,
+                    default: false,
+                },
+            ]);
+
+            if (!existingConfigAnswers.shouldOverwriteConfig) {
+                return;
+            }
+        }
+
+        console.log(`
+Note: Do not use your own bitbucket password. Create an app password with repositories read + write access.
+        
+To setup a bitbucket app password, checkout the following documentation:
+https://support.atlassian.com/bitbucket-cloud/docs/app-passwords/
+        `);
+
+        const answers = await inquirer.prompt([
+            {
+                type: 'input',
+                name: 'username',
+                message: 'Bitbucket Username:',
+                validate: (input) => {
+                    if (!input.trim()) {
+                        return 'Username cannot be empty.';
+                    }
+                    return true;
+                },
+            },
+            {
+                type: 'password',
+                name: 'appPassword',
+                message: 'App Password:',
+                validate: (input) => {
+                    if (!input.trim()) {
+                        return 'App password cannot be empty.';
+                    }
+                    return true;
+                },
+            },
+        ]);
+
+        config.auth = config.auth || {};
+
+        config.auth.username    = answers.username.trim();
+        config.auth.appPassword = answers.appPassword.trim();
+
+        fs.writeFileSync(configFileLocation, JSON.stringify(config));
+
+        if (!hasExistingConfig) {
+            console.log(`Created ${configFileLocation}.`);
+        } else {
+            console.log(`Updated ${configFileLocation}.`);
+        }
+    })
+;
+
+program.parse();