Xong phần map viewer

src/storage/database.cpp

@@ -193,6 +193,48 @@ bool Database::ensureDataDirs(std::string& err)
   return true;
 }
 
+bool Database::migrateLegacyMapsDir(std::string& err)
+{
+  if (data_dir_.filename() != "data")
+    return true;
+
+  const std::filesystem::path legacy = "maps";
+  const auto target = mapsDir();
+  if (!std::filesystem::is_directory(legacy) || legacy == target)
+    return true;
+
+  std::error_code ec;
+  std::filesystem::create_directories(target, ec);
+  if (ec)
+  {
+    err = "failed to create maps directory: " + target.string();
+    return false;
+  }
+
+  for (const auto& entry : std::filesystem::directory_iterator(legacy, ec))
+  {
+    if (ec || !entry.is_directory())
+      continue;
+    const auto dest = target / entry.path().filename();
+    if (std::filesystem::exists(dest))
+      continue;
+    std::filesystem::rename(entry.path(), dest, ec);
+    if (ec)
+    {
+      ec.clear();
+      std::filesystem::copy(entry.path(), dest, std::filesystem::copy_options::recursive, ec);
+      if (ec)
+      {
+        err = "failed to migrate map directory: " + entry.path().string();
+        return false;
+      }
+      std::filesystem::remove_all(entry.path(), ec);
+      ec.clear();
+    }
+  }
+  return true;
+}
+
 bool Database::applySchema(std::string& err)
 {
   return execSql(db_, kSchemaSql, err);
@@ -494,6 +536,8 @@ bool Database::init(std::string& err)
     return false;
   if (!ensureDataDirs(err))
     return false;
+  if (!migrateLegacyMapsDir(err))
+    return false;
   if (!migrateFromJsonIfNeeded(err))
     return false;
   if (!getMeta("schema_version"))