move stuff to common and half figured out the install script

bootstrap.js

@@ -1,6 +1,11 @@
 import fs from 'fs';
+import opsys from 'os';
+import path from 'path';
 import { parseArgs } from 'node:util';
 import subProcess from 'child_process';
+import { log } from 'console';
+
+const home = opsys.homedir() + '/';
 
 const VERSION_MAJOR = 1;
 const VERSION_MINOR = 0;
@@ -58,13 +63,54 @@ subProcess.spawnSync('./' + targetInstallScript, [], {
 
 console.log('Successfully installed OS deps...');
 
-const parentDir = 'common';
-const targetDir = host;
+const parentDir = 'common/';
+const childDir = host + '/';
 
-// we want to create a symlink between home/ & host/ to ~/
+// we want to create a symlink between common/ & {host}/ to ~/
 // for every file stored in this repo, beforeso we need
 // to create a .bak/ of the origionals as this might 
 // well cause some issues...
+const copyRecursiveSync = (src, dest) => {
+    const exists = fs.existsSync(src);
+    const stats = exists && fs.statSync(src);
+    const isDirectory = exists && stats.isDirectory();
+    if (isDirectory) {
+        fs.mkdirSync(dest);
+        fs.readdirSync(src).forEach(function(childItemName) {
+            copyRecursiveSync(path.join(src, childItemName),
+                path.join(dest, childItemName));
+        });
+    } else {
+        // recirsively make dest
+        const newDir = dest.split('/').splice(-1).join();
+        console.log(dir, newDir); 
+        if (!fs.existsSync(newDir))
+            fs.mkdirSync(newDir, { recursive: true, overwrite: true });
+        
+        fs.copyFileSync(src, dest, fs.constants.COPYFILE_FICLONE);
+    }
+};
+
+// since we can recursively copy we only need the top level directories
+const basePaths = fs.readdirSync(parentDir);
+const childPaths = fs.readdirSync(childDir);
+
+// start by making the backup
+const backupDir = home + 'dotfiles.bak/'; // TODO: make this a cmd option
+console.log(`Backing up current dotfiles to ${backupDir}`);
+
+if (!fs.existsSync(backupDir))
+    fs.mkdirSync(backupDir);
+
+const allPaths = Array.from(new Set(basePaths.concat(childPaths)));
+for (const path of allPaths) {
+    const copyTarget = home + path;
+    const backupTarget = backupDir + path;
+    console.log(`Moving ${copyTarget} to ${backupTarget}`);
+    copyRecursiveSync(copyTarget, backupTarget);
+}
+
+// we prioritise targetDir over parentDir