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use super::message::{num_tokens_from_messages, Message, MessageRole, MAX_TOKENS};
use super::role::Role;
use anyhow::{bail, Result};
use serde::{Deserialize, Serialize};
#[derive(Debug, Clone, Deserialize, Serialize)]
pub struct Conversation {
pub tokens: usize,
pub role: Option<Role>,
pub messages: Vec<Message>,
}
impl Conversation {
pub fn new(role: Option<Role>) -> Self {
let mut value = Self {
tokens: 0,
role,
messages: vec![],
};
value.update_tokens();
value
}
pub fn update_role(&mut self, role: &Role) -> Result<()> {
if self.messages.is_empty() {
self.role = Some(role.clone());
self.update_tokens();
} else {
bail!("Error: Cannot perform this action in the middle of 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(""));
}
pub fn add_message(&mut self, input: &str, output: &str) -> Result<()> {
let mut need_add_msg = true;
if self.messages.is_empty() {
if let Some(role) = self.role.as_ref() {
self.messages.extend(role.build_emssages(input));
need_add_msg = false;
}
}
if need_add_msg {
self.messages.push(Message {
role: MessageRole::User,
content: input.to_string(),
});
}
self.messages.push(Message {
role: MessageRole::Assistant,
content: output.to_string(),
});
self.tokens = num_tokens_from_messages(&self.messages);
Ok(())
}
pub fn echo_messages(&self, content: &str) -> String {
let messages = self.build_emssages(content);
serde_yaml::to_string(&messages).unwrap_or("Unable to echo message".into())
}
pub fn build_emssages(&self, content: &str) -> Vec<Message> {
let mut messages = self.messages.to_vec();
let mut need_add_msg = true;
if messages.is_empty() {
if let Some(role) = self.role.as_ref() {
messages = role.build_emssages(content);
need_add_msg = false;
}
};
if need_add_msg {
messages.push(Message {
role: MessageRole::User,
content: content.into(),
});
}
messages
}
pub fn reamind_tokens(&self) -> usize {
MAX_TOKENS.saturating_sub(self.tokens)
}
}
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