From 899c4af9ea4dedd295a909f6ddc968b20157a505 Mon Sep 17 00:00:00 2001
From: sigoden <sigoden@gmail.com>
Date: Fri, 10 Mar 2023 07:13:22 +0800
Subject: fix: forbid .clear role in middle of conversation

---
 src/config/conversation.rs | 7 +++++++
 src/config/mod.rs          | 8 ++++++++
 2 files changed, 15 insertions(+)

(limited to 'src/config')

diff --git a/src/config/conversation.rs b/src/config/conversation.rs
index 7fe843d..93382a3 100644
--- a/src/config/conversation.rs
+++ b/src/config/conversation.rs
@@ -33,6 +33,13 @@ impl Conversation {
         Ok(())
     }
 
+    pub fn can_clear_role(&self) -> Result<()> {
+        if self.messages.is_empty() {
+            return Ok(());
+        }
+        bail!("Error: Cannot perform this action in the middle of conversation")
+    }
+
     pub fn update_tokens(&mut self) {
         self.tokens = num_tokens_from_messages(&self.build_emssages(""));
     }
diff --git a/src/config/mod.rs b/src/config/mod.rs
index ebbd909..ff7acae 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -186,6 +186,14 @@ impl Config {
         }
     }
 
+    pub fn clear_role(&mut self) -> Result<()> {
+        if let Some(conversation) = self.conversation.as_ref() {
+            conversation.can_clear_role()?;
+        }
+        self.role = None;
+        Ok(())
+    }
+
     pub fn create_temp_role(&mut self, prompt: &str) -> Result<()> {
         let role = Role::new(prompt, self.temperature);
         if let Some(conversation) = self.conversation.as_mut() {
-- 
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