Add authentication server, dev CLI, Docker multi-service setup, and cross-platform improvements

server/internal/utils/utils.go

@@ -3,19 +3,20 @@ package utils
 import (
 	"encoding/json"
 	"fmt"
-	"os"
-	"path/filepath"
+	"lunar-tear/server/internal/masterdata/memorydb"
 )
 
-func ReadJSON[T any](filename string) ([]T, error) {
-	path := filepath.Join("assets", "master_data", filename)
-	data, err := os.ReadFile(path)
-	if err != nil {
-		return nil, fmt.Errorf("read %s: %w", path, err)
-	}
-	var out []T
-	if err := json.Unmarshal(data, &out); err != nil {
-		return nil, fmt.Errorf("unmarshal %s: %w", path, err)
-	}
-	return out, nil
+// ReadTable deserializes a master data table from the in-memory binary store.
+// The key is the snake_case table name as it appears in the binary header
+// (e.g. "m_weapon", "m_costume").
+func ReadTable[T any](key string) ([]T, error) {
+	return memorydb.ReadTable[T](key)
+}
+
+func EncodeJSONMaps(records ...map[string]any) (string, error) {
+	jsonBytes, err := json.Marshal(records)
+	if err != nil {
+		return "", fmt.Errorf("json marshal maps: %w", err)
+	}
+	return string(jsonBytes), nil
 }