From 62d5f0526f61957eef660710120723686c68493c Mon Sep 17 00:00:00 2001
From: Ritchie Cunningham <ritchie@ritchiecunningham.co.uk>
Date: Sun, 21 Sep 2025 20:42:25 +0100
Subject: [PATCH] [Add] Implemented Lua command execution engine.

Replacing hardcoded c++ 'ls' command with a generic system that finds and
runs Lua scripts from the virual file system.
---
 common/src/command_processor.cpp | 38 ++++++++++++++------------------
 1 file changed, 17 insertions(+), 21 deletions(-)

diff --git a/common/src/command_processor.cpp b/common/src/command_processor.cpp
index f1695d1..0110856 100644
--- a/common/src/command_processor.cpp
+++ b/common/src/command_processor.cpp
@@ -21,6 +21,23 @@ std::string CommandProcessor::process_command(const std::string& command) {
   size_t end = cmd.find_last_not_of(" \t\n\r");
   cmd = (end == std::string::npos) ? "" : cmd.substr(0, end+1);
 
+  /* === Generic script executer. === */
+  std::string command_name = cmd.substr(0, cmd.find(" "));
+
+  /* Search for script in the /bin directory. */
+  std::string script_filename = command_name + ".lua";
+  vfs_node* root = _current_dir;
+  while(root->parent != nullptr) {
+    root = root->parent;
+  }
+  if(root->children.count("bin") && root->children["bin"]->children.count(script_filename)) {
+    vfs_node* script_node = root->children["bin"]->children[script_filename];
+    /* TODO: Pass arguments to the Lua script. */
+    return _lua->execute(script_node->content, _current_dir);
+  }
+
+
+  /* === Tmp fallback for built-in C++ commands. */
   if(command.rfind("cd ", 0) == 0) {
     std::string target_dir_name = command.substr(3);
     if(target_dir_name == "..") {
@@ -38,27 +55,6 @@ std::string CommandProcessor::process_command(const std::string& command) {
       return "cd: no such file or directory\n";
     }
     return get_full_path(_current_dir);
-  } else if(cmd == "ls") {
-    /* Find the root of the VFS to look for the /bin directory. */
-    vfs_node* root = _current_dir;
-    while(root->parent != nullptr) {
-      root = root->parent;
-    }
-
-    fprintf(stderr, "DEBUG: VFS root found, name: '%s'\n", root->name.c_str());
-
-    /* Find and execute the ls.lua script. */
-    if(root->children.count("bin")) {
-      fprintf(stderr, "DEBUG: Found '/bin' directory.\n");
-      vfs_node* bin_dir = root->children["bin"];
-      if(bin_dir->children.count("ls.lua")) {
-        fprintf(stderr, "DEBUG: Found '/bin/ls.lua'. Executing.\n");
-        vfs_node* ls_script_node = bin_dir->children["ls.lua"];
-        return _lua->execute(ls_script_node->content, _current_dir);
-      }
-    }
-    fprintf(stderr, "DEBUG: 'ls' command failed to find '/bin/ls.lua'.\n");
-    return "ls: command not found\n";
   }
 
   return "Unknown command: " + command + "\n";