refactoring: working macro and generics

src/error.rs

@@ -0,0 +1,21 @@
+use async_openai::error::OpenAIError;
+use thiserror::Error;
+
+/// Error types for processing `TextContent`.
+#[derive(Error, Debug)]
+pub enum ProcessingError {
+    #[error("SurrealDb error: {0}")]
+    SurrealDbError(#[from] surrealdb::Error),
+
+    #[error("LLM processing error: {0}")]
+    OpenAIerror(#[from] OpenAIError),
+
+    #[error("Embedding processing error: {0}")]
+    EmbeddingError(String),
+
+    #[error("Graph processing error: {0}")]
+    GraphProcessingError(String),
+
+    #[error("LLM parsing error: {0}")]
+    LLMParsingError(String),
+}