print history each time when running

src/api.rs

@@ -155,9 +155,10 @@ pub async fn get_res<'a>(cli: &Client, query: String, vqd: String, config: &Conf
             }
         }
     }
+    println!("\n");
+
     if let Some(err) = error {
         eprintln!("Error while writing to session: {err:#?}");
         eprintln!("Session may be broken.");
     }
-    println!("\n");
 }

src/main.rs

@@ -41,6 +41,13 @@ async fn main() {
 
     let args = Args::parse();
     let query = args.query.join(" ").trim().to_string();
+    
+    {
+        let session = Session::create_or_restore("");
+        if session.is_restored() {
+            session.print_history();
+        }
+    }
 
     if query.len() == 0 {
         exit(0);

src/session.rs

@@ -7,13 +7,17 @@ use chrono::{DateTime, Local};
 use serde::{Deserialize, Serialize};
 
 use crate::api::{ChatChunk, ChatMessagePayload};
+use crate::{BLUE, GRAY, GREEN, RESET};
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Session {
     session_id: String,
     ttl: DateTime<Local>,
     messages: Vec<ChatMessagePayload>,
-    vqd: String
+    vqd: String,
+
+    #[serde(skip)]
+    restored: bool
 }
 
 impl Session {
@@ -68,6 +72,7 @@ impl Session {
 
         match inner(Self::path_for_id(id)) {
             Ok(mut session) => {
+                session.restored = true;
                 if session.is_expired() {
                     session.destroy().expect("Couldn't destroy expired session");
                     None
@@ -94,11 +99,16 @@ impl Session {
             session_id: id.into(),
             ttl: Self::get_ttl(),
             messages: vec![],
-            vqd: vqd.into()
+            vqd: vqd.into(),
+
+            restored: false
         }
     }
 
     fn save(&self) -> Result<(), Box<dyn std::error::Error>> {
+        if self.messages.len() == 0 {
+            return Ok(());
+        }
         fs::write(self.path(), serde_json::to_string_pretty(self)?)?;
         Ok(())
     }
@@ -107,6 +117,40 @@ impl Session {
         self.ttl < Local::now()
     }
 
+    pub fn is_restored(&self) -> bool {
+        self.restored
+    }
+
+    pub fn print_history(&self) {
+        println!("{GRAY}* start restored conversation *{RESET}");
+        println!();
+        
+        for message in self.messages.iter() {
+            let user = &message.role;
+            let msg = &message.content;
+
+            let role_color = {
+                if user == "user" { GREEN }
+                else if user == "assistant" { BLUE }
+                else { GRAY }
+            };
+
+            let short_user = {
+                if user == "user" { "you" }
+                else if user == "assistant" { "ai" }
+                else { user }
+            }.to_string();
+
+            println!("{role_color}{short_user}{RESET}\t: {msg}{RESET}");
+
+            if user == "assistant" {
+                println!();
+            }
+        }
+
+        println!("{GRAY}* end restored conversation *{RESET}");
+    }
+
     pub fn destroy(&self) -> Result<(), Box<dyn std::error::Error>> {
         Ok(fs::remove_file(self.path())?)
     }
@@ -114,7 +158,7 @@ impl Session {
     pub fn create_or_restore<T: Into<String>>(vqd: T) -> Self {
         let session_id: String = Self::terminal_session_id();
         match Self::restore_with_id(&session_id) {
-            Some(session) => session,
+            Some(session) => { session },
             None => {
                 let session = Self::new(&session_id, vqd);
                 session.save().expect("Couldn't save new session");