1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
use super::message::{num_tokens_from_messages, Message, MessageRole};
use super::role::Role;
use anyhow::{bail, Context, Result};
use serde::{Deserialize, Serialize};
use std::fs::{self, read_to_string};
use std::path::Path;
pub const TEMP_SESSION_NAME: &str = "temp";
#[derive(Debug, Clone, Deserialize, Serialize)]
pub struct Session {
pub path: Option<String>,
pub model: String,
pub tokens: usize,
pub temperature: Option<f64>,
pub messages: Vec<Message>,
#[serde(skip)]
pub dirty: bool,
#[serde(skip)]
pub role: Option<Role>,
#[serde(skip)]
pub name: String,
}
impl Session {
pub fn new(name: &str, model: &str, role: Option<Role>) -> Self {
let temperature = role.as_ref().and_then(|v| v.temperature);
let mut value = Self {
path: None,
model: model.to_string(),
temperature,
tokens: 0,
messages: vec![],
dirty: false,
role,
name: name.to_string(),
};
value.update_tokens();
value
}
pub fn load(name: &str, path: &Path) -> Result<Self> {
let content = read_to_string(path)
.with_context(|| format!("Failed to load session {} at {}", name, path.display()))?;
let mut session: Self =
serde_yaml::from_str(&content).with_context(|| format!("Invalid sesion {}", name))?;
session.name = name.to_string();
session.path = Some(path.display().to_string());
Ok(session)
}
pub fn info(&self) -> Result<String> {
self.guard_save()?;
let output = serde_yaml::to_string(&self)
.with_context(|| format!("Unable to show info about session {}", &self.name))?;
Ok(output)
}
pub fn update_role(&mut self, role: Option<Role>) -> Result<()> {
self.guard_empty()?;
self.temperature = role.as_ref().and_then(|v| v.temperature);
self.role = role;
self.update_tokens();
Ok(())
}
pub fn set_model(&mut self, model: &str) -> Result<()> {
self.model = model.to_string();
self.update_tokens();
Ok(())
}
pub fn save(&mut self, session_path: &Path) -> Result<()> {
if !self.should_save() {
return Ok(());
}
self.dirty = false;
let content = serde_yaml::to_string(&self)
.with_context(|| format!("Failed to serde session {}", self.name))?;
fs::write(session_path, content).with_context(|| {
format!(
"Failed to write session {} to {}",
self.name,
session_path.display()
)
})?;
Ok(())
}
pub fn should_save(&self) -> bool {
!self.is_empty() && self.dirty
}
pub fn guard_save(&self) -> Result<()> {
if self.path.is_none() {
bail!("Not found session '{}'", self.name)
}
Ok(())
}
pub fn guard_empty(&self) -> Result<()> {
if !self.is_empty() {
bail!("Cannot perform this action in a session with messages")
}
Ok(())
}
pub fn is_temp(&self) -> bool {
self.name == TEMP_SESSION_NAME
}
pub fn is_empty(&self) -> bool {
self.messages.is_empty()
}
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_messages(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);
self.dirty = true;
Ok(())
}
pub fn echo_messages(&self, content: &str) -> String {
let messages = self.build_emssages(content);
serde_yaml::to_string(&messages).unwrap_or_else(|_| "Unable to echo message".into())
}
pub fn build_emssages(&self, content: &str) -> Vec<Message> {
let mut messages = self.messages.clone();
let mut need_add_msg = true;
if messages.is_empty() {
if let Some(role) = self.role.as_ref() {
messages = role.build_messages(content);
need_add_msg = false;
}
};
if need_add_msg {
messages.push(Message {
role: MessageRole::User,
content: content.into(),
});
}
messages
}
}
|
