fix: Correctly handle default configuration when user dirs do not exi…

…st (#222)

We assumed that the user configuration directory hierarchy always
exists, but with a completely fresh installation, it does not.

Consequently, populating the default configuration silently failed
and the environment is broken.

To resolve this issue, we now check to see if the directory the
configuration file lives in exists, and we create it if it does not.

Additionally, we now support populating a full set of default
configuration in case multiple files and folders are required for
initial configuration.

src/config.cpp

@@ -37,7 +37,8 @@ using namespace miracle;
 
 namespace
 {
-const char* MIRACLE_USR_SHARE_DIR = "/usr/share/miracle-wm/config/default.yaml";
+const char* MIRACLE_DEFAULT_CONFIG_FILE = "/usr/share/miracle-wm/config/default.yaml";
+const char* MIRACLE_DEFAULT_CONFIG_DIR = "/usr/share/miracle-wm/default-config";
 
 int program_exists(std::string const& name)
 {
@@ -218,11 +219,23 @@ void FilesystemConfiguration::_init(std::optional<StartupApp> const& startup_app
         mir::log_info("Configuration file path is: %s", config_path.c_str());
         if (!std::filesystem::exists(config_path))
         {
-            if (std::filesystem::exists(MIRACLE_USR_SHARE_DIR))
+
+            if (!std::filesystem::exists(std::filesystem::path(config_path).parent_path()))
+            {
+                mir::log_info("Configuration directory path missing, creating it now");
+                std::filesystem::create_directories(std::filesystem::path(config_path).parent_path());
+            }
+            if (std::filesystem::exists(MIRACLE_DEFAULT_CONFIG_DIR))
+            {
+                mir::log_info("Configuration hierarchy being copied from %s", MIRACLE_DEFAULT_CONFIG_DIR);
+                const auto fs_copyopts = std::filesystem::copy_options::recursive;
+                std::filesystem::copy(MIRACLE_DEFAULT_CONFIG_DIR, std::filesystem::path(config_path).parent_path(), fs_copyopts);
+            }
+            else if (std::filesystem::exists(MIRACLE_DEFAULT_CONFIG_FILE))
             {
-                mir::log_info("Configuration being copied from %s", MIRACLE_USR_SHARE_DIR);
+                mir::log_info("Configuration being copied from %s", MIRACLE_DEFAULT_CONFIG_FILE);
                 std::filesystem::copy_file(
-                    MIRACLE_USR_SHARE_DIR,
+                    MIRACLE_DEFAULT_CONFIG_FILE,
                     config_path);
             }
             else